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PHAN I

TONG QUAN VE CAD/CAM-CNC VAPHAN MEM PRO/E 2002

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CHNG ITONG QUAN VE CONG NGHE CAD/CAM-CNC

I. Tong quan ve cong nghe CAD/CAM.

Trong nhng nam cuoi the ky 20, cong nghe CAD/CAM a tr thanh motlnh vc ot pha trong thiet ke, che tao va san xuat san pham cong nghiep. CAD(Computer Aided Design) la thiet ke vi s tr giup cua may tnh. CAM (ComputerAided Manufacture) la che tao vi s tr giup cua may tnh. Hai lnh vc nay ghepnoi lai vi nhau a tr thanh mot loai hnh cong nghe cao, mot lnh vc khoa hoccong nghe tong hp cua s lien nganh C kh-Tin hoc-ien t-T ong hoa. Cungvi s phat trien cua khoa hoc may tnh, CAD/CAM a c nhan thc va chapnhan nhanh chong trong cong nghiep (cong nghiep det, cong nghiep nha, congnghiep c kh che tao) v no la hat nhan chnh e sang tao va san xuat san pham,e tang nang suat lao ong, giam cng o lao ong va t ong hoa qua trnh sanxuat, nang cao o chnh xac chi tiet va at hieu qua kinh te cao.

Trong qua trnh che tao, san xuat san pham th cong viec chuan b co vai trovo cung quan trong trong viec hnh thanh bat ky mot san pham c kh nao. Congviec nay bao gom cac khau chuan b thiet ke (thiet ke ket cau san pham, cac ban velap chung cua san pham), chuan b cong nghe (am bao tnh nang cong nghe cuaket cau, thiet lap quy trnh cong nghe), thiet ke va che tao cac trang b cong nghe vadung cu phu ke hoach hoa qua trnh san xuat va che tao san pham trong thi gian

an nh.Ngay nay khoa hoc ky thuat phat trien nh vu bao oi hoi ngi ky s phaikhong ngng nang cao lng thong tin tat ca cac khau cua qua trnh san xuat. Theocac nha khoa hoc a phan tch th tnh hnh thiet ke hien nay cho thay 90% khoilng thi gian thiet ke la e tra cu so lieu can thiet cho viec tnh toan, ch co 10%thi gian danh cho lao ong sang tao va quyet nh. Cho nen khoang 90% khoilng cong viec tren co the thc hien bang may tnh ien t hoac may ve t ong.Viec lam nay va chnh xac hn, va chat lng hn.

Trong san xuat hang loat nho, do ac iem la so lng chi tiet trong loat t, so

chung loai lai nhieu cho nen khoi lng thi gian chuan b cho san xuat rat ln, madang san xuat nay hien ang chiem u the trong nen kinh te th trng hien nay. Tatca ieu o phai oi hoi tao ra phng phap thiet ke mi nh may tnh ien t.

CAD/CAM la mot lnh vc nghien cu nham tao ra cac he thong thiet ke tong va che tao. No dung may tnh ien t e thc hien mot chc nang nhat nhthiet ke va che tao san pham. T ong hoa che tao la dung may tnh ien t e kehoach hoa, ieu khien qua trnh san xuat, ieu khien qua trnh cat got kim loai vakiem tra nguyen cong gia cong.

CAD/CAM ket noi vi nhau tao ra moi quan he mat thiet gia hai dang hoat

ong la thiet ke va che tao ma lau nay ngi ta coi la khac nhau va khong phu thuocvao nhau. T ong hoa thiet ke la dung cac he thong va phng tien tnh toan giup

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ngi ky s e thiet ke mo phong, phan tch va toi u hoa giai phap thiet ke.Phng tien bao gom may tnh ien t, cac may ve, may in, thiet b uc lo bangphng tien lap trnh bao gom chng trnh may cho phep am bao giao tiep vimay ve va cac chng trnh ng dung e thc hien chc nang thiet ke.

He CAD/CAM ky thuat a c ng dung cho c kh t mot vai nam trctrong mot so lnh vc trong cong nghiep hang khong. He tch hp CAD/CAM a co Viet Nam la CIMATRON, MASTERCAM, PROENGINEER, DELCAM,ANPHACAM, VISI.

II. Tong quan ve may cong cu ieu khien bang chng trnh so (may CNC) cac may cat thong thng, viec ieu khien cac chuyen ong cung nh thay

oi van toc cua cac bo phan eu c thc hien bang tay. Vi cach ieu khien nay,thi gian phu kha ln, nen khong the nang cao nang suat lao ong.

e giam thi gian phu, can thiet tien hanh t ong hoa qua trnh ieu khien.Trong san xuat hang khoi, hang loat ln, t lau ngi ta dung phng phap gia congt ong vi viec t ong hoa qua trnh ieu khien bang cac vau ty, bang mau chephnh, bang cam tren truc phan phoi ac iem cua cac loai may t ong nay la rutngan c thi gian phu, nhng thi gian chuan b san xuat qua dai. Nhc iemnay la khong ang ke neu nh san xuat vi khoi lng ln. Trai lai, vi lng sanxuat nho, mat hang thay oi thng xuyen, loai may t ong nay tr nen khong kinhte. Do o, can phai tm ra phng phap ieu khien mi. Yeu cau nay c thc hienvi viec ieu khien theo chng trnh so.

ac iem quan trong cua viec t ong hoa qua trnh gia cong tren cac mayCNC la am bao cho may co tnh van nang cao. ieu o cho phep gia cong nhieuloai chi tiet, phu hp vi dang san xuat hang loat nho va hang loat va, ma tren70% san pham cua nganh che tao may c che tao trong ieu kien o.

May cong cu ieu khien chng trnh so-viet tat la may NC (NumericalControl) la may t ong ieu khien (vai hoat ong hoac toan bo hoat ong), trongo cac hanh ong ieu khien c san sinh tren c s cung cap d lieu dang:LENH. Cac LENH hp thanh chng trnh lam viec. Chng trnh lam viec nayc ghi len mot c cau mang chng trnh di dang MA SO. C cau mang chngtrnh co the la BANG OT LO, BANG T, hoac chnh BO NH MAY TNH.

Cac the he au, may NC con s dung cac cap logic trong he thong. Phngphap ieu khien theo iem va oan thang, tc la khong co quan he ham so gia cacchuyen ong theo toa o. Viec ieu khien con mang tnh cng nen chng trnhn gian va cung ch gia cong c nhng chi tiet n gian nh gia cong lo, giacong cac ng thang song song vi cac chuyen ong ma may co.

Cac the he sau, trong he thong ieu khien cua may NC a c cai at caccum vi tnh, cac bo s ly va viec ieu khien luc nay phan ln hoac hoan toan

mem. Phng phap ieu khien theo ng bien, tc la co moi quan he ham sogia cac chuyen ong theo hng cac toa o. Cac may NC nay c goi la CNC.

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Chng trnh c soan thao t m hn va co the gia cong c nhng chi tiet cohnh dang rat phc tap. Hien nay cac may CNC a c dung pho bien.

III. Lch s phat trien cua may CNC

Nam 1947, John Parsons nay ra y tng ap dung ieu khien t ong vao quatrnh che tao canh quat may bay trc thang My. Trc o, viec gia cong va kiemtra bien dang cua canh quat phai dung cac mau chep hnh, s dung dng, do o ratlau va khong kinh te. Y nh dung ba xuyen lo e doa cac lo bang cach cho tn hieue ieu khien hai ban dao, a giup Parsons phat trien he thong Digital cua ong.

Vi ket qua nay, nam 1919, ong ky hp ong vi USAF (US Air Force) nhamche tao mot loai may cat theo bien dang t ong. Parsons yeu cau s tr giup e sdung phong th nghiem ieu khien t ong cua Vien Cong Nghe Massachusetts(M.I.T) ni c chnh phu My tai tr e che tao mot loai may phay 3 toa o ieu

khien bang chng trnh so.Sau 5 nam nghien cu, J.Parsons a hoan chnh he thong ieu khien may phay valan au tien trong nam 1954, M.I.T a s dung ten goi May NC.

Trong nhng nam 60, thi gian a chn mui cho viec phat trien va ng dungcac may NC. Rat nhieu thanh vien cua nganh cong nghiep hang khong My anhanh chong ng dung, phat trien va a san sinh ra the he may mi (CNC) cho phepphay cac bien dang phc tap, tao hnh vi hai, ba hoac bon va nam truc (ba tnh tienva hai quay).

Cac nc chau Au va Nhat Ban phat trien co cham hn mot vai nam, nhng

cung co nhng ac iem rieng, chang nhng ve mat ky thuat, ma ca ve ket cau nhket cau truc chnh, c cau cha dao, he thong cap dao v.v

T o en nay, hang loat may CNC ra i vi u cac chung loai va phat trienkhong ngng. S phat trien o da vao thanh tu cua cac nganh: may tnh ien t,ien t cong nghiep va ieu khien t ong Nhat la trong thap nien 90, may CNCa oi mi nhanh chong cha tng co trong lanh vc t ong.

IV. u iem cua may cong cu CNC.

- Tnh kinh te at cao vi may cong cu CNC bi toc o gia cong cao cung nhthi gian gia cong c ban, thi gian phu, thi gian chuan b va thi gian ket thucgiam. Cac nhan to anh hng sau ay tac ong manh en tnh kinh te cua mayCNC:

+ Lap trnh trc tiep tren may bi kha nang nhap bang tay.+ Viec am trach bo phan chuan b san xuat cho viec lap trnh, san sang

vat lieu cung nh dung cu cat va nhap cac d lieu c thc hien tai cho lam viec.+ Lu tr trong cac trng hp gia cong lap lai cua mot chng trnh gia

cong chi tiet ac biet di dang chng trnh con.

+ Toi u hoa chng trnh NC trong he ieu khien.

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+ Mo ta hnh dang chi tiet gia cong thong qua viec cho dang hnh hoc ngian.

+ Chay dao t ong cho en khi at kch thc.+ T ong van hanh cac chc nang cua may va trc tiep can thiep khi xay

ra loi hoac b nhieu.+ Quan sat t ong qua trnh gia cong thong qua he thong ieu khien CNC.+ He thong o dao cha nhieu dao.+ Co kha nang chuan b dung cu cat ben ngoai may ma khong anh hng

en qua trnh gia cong.- Chat lng chi tiet gia cong on nh, t phe pham.- Lam tang o chnh xac gia cong do cap chnh xac cua may cao (1/1000mm

o chnh xac o).- Thi gian gia cong ngan thong qua viec to chc san xuat va trung lap cong

viec.- Thi gian van hanh may cao.- Tnh linh hoat trong san xuat cao bi he thong gia cong va do vay gia cong

hp ly cho loat nho hoac gia cong n chiec vi o phc tap cao.

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CHNGIIPHAN MEM PRO/E 2002 (WILDFIRE)

I. Gii thieu ve Pro/E 2002:

Phan mem PRO/E 2002 la mot phan mem rat manh c ng dung rat rongrai trong nganh c kh che tao may hien nay, co the goi la mot tch hp CAD/CAM-CNC PRO/E 2002. No la vu kh ac lc phuc vu ban trong viec thiet ke chi tiet, laprap, thiet ke khuon mau va che tao nhng g ma ban co the sang tao ra thong quaviec xuat d lieu ieu khien may CNC.

Trong phan mem nay, nganh c kh che tao may co the khai thac nhngmodul sau:

Part: Xay dng mo hnh hnh hoc that trong khong gian 3D, gom mo hnh

khoi ran (Solid) va mo hnh mat (Surface).Drawing: Dng cac hnh chieu t mo hnh 3D, the hien kch thc, cac yeucau ky thuat va ghi chu cho ho s thiet ke.

Assembly: Lap rap cac chi tiet a c thiet ke trong phan Part dang Solid.Moldesign: Thiet ke khuon nha e tao ra cac san pham a c ve trong

phan Part.Manufacturing: Thiet ke qu ao cat e gia cong cac chi tiet a c thiet

ke trong phan Part hay hnh thanh trong phan Moldesign.Vi phan Manufacturing Pro/E 2002 (Pro/MFG) con ho tr viec mo phong va

xuat chng trnh NC e ieu khien may CNC.

II. Phan gia cong cua Pro/E 2002:Pro/MFG la mot modul cua Pro/ENGINEER cung cap cac d lieu can thiet

cho qua trnh gia cong.e gia cong c mot chi tiet bat ky nao, mot quy trnh cong nghe trc tien

phai co phoi, may, o ga, dao va cac yeu cau ky thuat khac. TrongPro/ENGINEER trnh t thc hien cung tng t nh vay. Nhng thong so canthiet cho qua trnh gia cong c nh ngha nhanh chong va co the c hieu chnh

nhanh chong va trnh t o co the c tom tat qua s o sau:

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Chi tiet gia cong(Manufacturing Model)

Tao phoi(workpiece)

Thiet ke chi tiet mau(Design model)

Cai at thong so cong nghe(Set up Operation)

Cai at thong so gia cong(Set up Manufacturing Database)

Xac lap qu ao chay daoDefine NC Se uence

Tao file d lieu(Creat CL Data file)

Xuat chng trnh NC(Post-Process)

Thc hien gia cong NCDrive NC Machine

May gia cong(Machine tool)

Dao(Tool)

Cai at o ga(Fixture setup)

Chay mo phongchng trnh

(Produce In-Process Model)

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PHAN II

LAP QUY AO GIA CONG VI PRO/E2002

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CHNG ITRNH T TAO MOT CHU TRNH PHAY

Trc tien, e co the tien hanh thiet lap mot chu trnh phay bang phan mem

PRO/E ta phai tao mot mo hnh chi tiet can gia cong co kch thc trong Part. Sauo ta m chng trnh PRO/E va tien hanh tao chu trnh phay nh sau:I. KHI ONG VI HOP THOAI NEW:

e bat au cong viec gia cong chi tiet, ta phai vao moi trng lam viec. Trnh tlam nh sau:

-Chon NEW t menu FILE va chon MANUFACTURE trong option TYPE-Chon NC ASSEMBLY trong option SUB-TYPE.-Trong o Name ta at ten (v du: GIACONG)OK.

II. AT CHI TIET VAO MOI TRNG LAM VIEC:e a chi tiet can gia cong len man hnh thiet ke ta lam

nh sau:- Trong menu MANUFACTUREMfg Modelxuat hien

menu MFG MDL-Chon Assemblychon Ref Modelxuat hien hop thoai

Open.

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Khi o chon chi tiet can gia cong. Chon Openchi tiet can gia cong se xuathien tren man hnh.

III. TAO PHOI (WORKPIECE):-Trong menu MANUFACTUREMfg Modelxuat hien menu MFG MDL-Chon Createchon Workpiece.

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-Enter Part name [PRT000]: at ten cho phoi (vi duVOLUME)

-T menu FEAT CLASS chon SolidProtructionxuat hienSOLID OPTS

-T menu SOLID OPTS chon phng phap tao the tch Done.

V du ta chon ExtrudeSolidDone.

- Click vao e tien hanh qua trnh tao section.- Chon TOPchon RIGHTclick vao Sketch e nh hng mat phang

ve phac.- Chon RIGHT, FRONT e lam Reference cho qua trnh ve.

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- Click e tao mot section hnh ch nhat trum len chi tiet can gia cong.- Hieu chnh cac kch thc

- Click e ket thuc qua trnh ve.

- Nhap chieu cao vao o

- Click e hoan thanh.

- Chon Default. Ket qua nh hnh sau:

Sau khi c tao ra, phoi tren man hnh co mau xanh la cay. Nh vay, ta a taoxong phoi cho chi tiet cua mnh.

IV. THIET LAP CAC THONG SO CONG NGHESau khi tao xong phoi ta tien hanh thiet lap cac thong so ve

may gia cong, o ga, dao, Cac thong so o goi la cac thong socong nghe. Trnh t thiet lap nh sau:

-T MANUFACTURE menu, click Machining > Operation(or Mfg Setup Operation).

-Xuat hien hop thoai Operation Setup

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1. THIET LAP MAY GIA CONG:

- T MFG SETUP menu, click Workcell hoac click tren Operation

Setup

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- Click vao OK hay Apply e nhan may gia cong.

2. THIET LAP O GA

-Tren Operation Setup, Click .

3. THIET LAP HE TRUC TOA O CHO CHNG TRNH:

Click ben canh Machine Zero trong Operation Setupxuat hienmenu MACH CSYS:

- Create: tao mot he truc toa o mi- Select: chon mot he truc toa o

Click vao phoi, phoi se chuyen sang mau o

xuat hien hop oi thoai

Click vao mot nh e lam goc toa o

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Lan lt click vao o Use trong Orientation tabe chon hai truc cua he truc toa o

4. THIET LAP MAT PHANG LUI DAO:- Click vao ben canh Surface trong Retract, xuat hien hop oi thoai

Operation Setup.

- Ta chon Along Z Axis, khi o hop oi thoai Enter Z Depth bat sang, tanhap khoang cach vao ay.

Sau khi OK mat phang lui dao se xuat hien vi ten ADTM1 nh hnh sau:

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Nh vay la ta a tao xong mat phang lui dao.

V. THIET LAP CAC THONG SO GIA CONG:

- Sau khi thiet lapxong cac thongso cong nghe, tatien hanh thietlap cac thong sove phng phapgia cong, che ocat, ham cat,

Cac thong so naygoi la cac thongso cong nghe.Trnh t tienhanh nh sau:

- T menu MANUFACTURE. Tachon NC Sequence t menuMachining e thiet lap trnh t giacong

- Xuat hien menu MACH AUXchonMachiningxuat hien Submenu vi cacphng phap gia cong tren may phay nh sau:

- Sau khi chon phng phap phay, chon Donexuat hien

menu NC SEQUENCE va menu Seq Setup.

Mat

phang luidao

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Chon Done e chap nhan cac la chon xuat hien hop thoai Tools Setup ekhai bao dung cu cat.

Sau khi khai bao xong chon Preview e xem anh cua dao Apply lu laithong so cua dao cho chng trnh NC Sequence hien hanh, ta chon File e lu dao

va cai at. Dung cu se c lu vi uoi .tpm. New: tao mot dao mi

Open Tool Library: m th vien dao

Open Parameter File: xem cac file vethong so dao co san tren th vien dao.

Save Tool: lu dao va thiet lap.

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- Chon OK e ket thuc qua trnh khai bao dao. Sau khi khai bao dao xong chonMFG PARAMS vi cac la chon sau:

Site: thiet lap cac thong so chuyen biet hay thong dung edung ve sau.

Visibility: thiet lap cac thong so cho phep the hien trenman hnh.

Set: thiet lap cac thong so gia cong cho chu trnh gia cong.

Retrieve: truy tm lai cac thong so gia cong a thiet lap cosan trc.

Save: lu cac thong so gia cong va thiet lap.

T menu MFG PARAMS ta chon Set e khai bao quy trnh cong nghe xuathien hop thoai Param Tree:

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- Sau khi khai bao xong cac thong so cong nghe, ta chon FileSavexuat hienhop thoai Save Parameters:

Ta go ten cho thong so va cai at va chon OK e lu lai cac thong so o.

TAO THE TCH GIA CONG:Sau khi khai bao xong cac thong so ta chon Donexuat hien menu DIFINE

VOLchon Create Vol e bat au tao the tch gia cong.

Xuat hien dong nhacEnter name for the milling volumeta nhap ten cho thetch phay ma ta se tao (the tch phay la the tch ma dao se cat bo i)OKxuathien menu CREATE VOL vi 2 la chon sau:

-Gather: chon cac be mat e xac nh the tch can phay.-Sketch: ve the tch phay trong moi trng Sketch.

GATHER:- Khi chon Gather xuat hien menu GATHER STEPS vi

cac la chon sau:

+ Select: chon cac mat hoac feature.+ Exclude: loai cac mat hoac cac feature sau khiselect.

+ Fill: tram cac lo hong.+ Close: ong kn the tch c chon t cac mat bi

mat tren hoac ng vien mat ay.

- Chon SelectDonexuat hien menu GATHER SEL

vi cac la chon sau:+ Surf & Bnd: chon mot mat phang lam viec va bien

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dang cua be mat chng trnh se chap nhan be mat c chon vacac mat xung quanh no cung c chon.

+ Surfaces: chon tng be mat rieng biet.+ Features: chon cac feature.

+ Mill Surface: chon mat phay.

- Ta chon SurfaceDoneClick len mat cua chi tiettham chieuOKDone Refs.

- e xem the tch can phay a c tao ra ta chon Show Volume. Khi o thetch phay xuat hien tren man hnh vi mau tm (mac nh).

- Luc nay tren menu CREATE VOL cac la chon sau co hieu lc Round,Trim, Offset.

Round: bo tron cac canh the tch can phay.Trim: cat xen khoi the tch can phay.Offset: m rong Volume eu ra vi mot the tch khong

oi.

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SKETCH:Khi ta chon Sketch xuat hien menu SOLID OPTS vi cac la

chon sau:

Extrude: tao mot khoi solid theo mot phng thang tmat phang ve phac

Revolve: tao mot the tch bang cach xoay tron mat vephac quanh mot ng tam (tao khoi tron xoay).

Sweep:tao mot the tch bang cach quet theo mot quy aophac thao

Blend: tao the tch bang cach ket noi cac mat phang lai thanh mot SolidSolid: tao mot khoi acThin: tao mot khoi mong

Khi ta chon Offset: sub-menu OPTIONS xuat hien vi cac la chon sau:

Wall: offset tat ca cac mat ben hong se song songSurface: chon be mat e OffsetTool Radius: Offset khoang cach bang ban knh dung cu cat.Value: Offset khoang cach se c nhap vao. Nhap gia tr

khoang cach

Horizontal: canh mat ay se Offset song song vi mat phangXYTangential: canh cua mat ay se tiep tuyen vi mat phang XY

VI. MO PHONG QUA TRNH GIA CONG:Trong menu MANUFACTUREMACHININGNC SEQUENCE:

Ta chon vao Play Path e xac lap ng chay dao chnh ehoan thanh chng trnh NC Sequence.

Khi chon Play Path xuat hien menu PLAY PATH vi cac lachon sau:

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Screen Play: xem ng chay dao.NC Check: xem viec mo phong dang ac.Gouge Check: kiem tra v tr dao an vao chi tiet.

Khi ta chon Screen Play th xuat hien hop thoai PLAY PATH, ong thi trenman hnh xuat hien dung cu cat va ng di chuyen dao mau o.

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CHNG IIGOI CHI TIET MAU VA TAO PHOI

au tien chung ta chon NEWMANUFACTURING e vao man hnh gia

cong

Cac lenh c s dung trong menu MANUFACTURE:

Mfg Model: Thiet lap hay hieu chnh man hnh thiet ke giacong va tao phoi.

Mfg Setup: Thiet lap cac thong so gia cong c ban nhmay, dao, o ga, dung cu cat, cai at thong so, chon kieu gia cong.

Machining: Tao ra qua trnh gia cong, trnh t gia cong va

cac dung cu cat can thiet cho qua trnh gia cong.CL Data: Hieu chnh hay mo phong cac ng chay dao va

xuat tap tin ra thanh chng trnh gia cong xac nhModify: Hieu chnh man hnh thiet ke, phoi, chng trnh

gia congRegenerate: Tai hien lai oi tng va c hieu chnh

tren man hnh thiet ke hay chng trnh gia cong.Set Up: Cai at cac thuoc tnh cho man hnh thiet ke nh n v o v.v.Relations: Tao quan he trong man hnh thiet ke gia cong.Program: Cho phep ta chap nhan nhng ham Pro/Program.

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I. at chi tiet len man hnh gia cong:- T menu MANUFACTUREMfg ModelAssemblyxuat hien menu

MFG MDL TYP:

Ref Model: Goi chi tiet muon gia cong len man hnh.Workpiece: Tao phoi e gia cong t chi tiet va goi.Mfg Assem: Lap rap nhng phan khac cho viec gia cong.Gen Assem: Ket hp nhng lap rap.

- Chon Assemblychon Ref Modelxuat hien hop thoaiOpen.

Khi o chon chi tiet can gia cong. Chon Openchi tiet can gia cong se xuathien tren man hnh.

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II. Tao phoi (workpiece):e co the tien hanh gia cong c th chung ta phai tao phoi cho qua trnh gia cong.Phoi co the c tao trc tiep trong moi trng gia cong hoac thiet lap trc trongPart va lap rap vao moi trng gia cong (thiet lap gian tiep).

1. Tao phoi trc tiep trong moi trng gia cong:Trnh t tien hanh nh sau:

-Trong menu MANUFACTUREMfg Modelxuat hien menu MFG MDL-Chon Createchon Workpiece.

-Enter Part name [PRT000]: at ten cho phoi (vi duVOLUME)

-T menu FEAT CLASS chon SolidProtructionxuat hienSOLID OPTS

-T menu SOLID OPTS chon phng phap tao the tch Done.

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Extrude: Tao phoi bang cach quet mot tiet dien i motoan theo phng vuong goc vi mat phang cha tiet dien o.

Revolve: Tao phoi bang cach quet tiet dien khep knquanh mot ng tam xoay.

Sweep: Tao phoi bang cach keo tiet dien doc theo motng dan cho trc.

Blend: tao phoi bang cach tao ra mot vat the trum tnhieu tiet dien cho trc.

Advanced: Tao phoi co hnh dang phc tap. Solid: Tao phoi vi tiet dien la kn. Thin: Tao phoi vi tiet dien la h

- Chon cach tao phoi xong ta chon Done va bat au tao phoibao trum len chi tiet can gia cong.

Sau khi c tao ra, phoi tren man hnh co mau xanh la cay.Nh vay, ta a tao xong phoi cho chi tiet cua mnh.2. Thiet lap gian tiep:Trnh t tien hanh nh sau:

-Trong menu MANUFACTUREMfg Modelxuat hien

menu MFG MDL-Chon Assemblychon Workpiece.

-Xuat hien hop thoai Open nh sau:

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Chon vao phoi mong muon Click vao Openxuat hien phoi tren man hnh:

Click vao tren hop thoai Component Palacement, phoi se t ong laprap lai vi chi tiet gia cong. Chon vao OK e hoan tat viec tao phoi.

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CHNG IIITHIET LAP CAC THONG SO CONG NGHE

Sau khi tao xong phoi ta tien hanh thiet lap cac thong so cong nghe.

-T MANUFACTURE menu, click Machining >Operation (or Mfg Setup Operation).

-Xuat hien hop thoai Operation Setup

Operation Name: ten qui trnh cong nghe (v du : 0P010 ).

Chon : at ten mi cho qui trnh cong nghe.

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Chon : huy bo ten qui trnh cong nghe.Thoat khoi hop thoai Operation Setup: FileExit.NC Machine: thiet lap may e gia cong.

Fixture Setup: thiet lap o ga.Machine zero: thiet lap he truc toa o.Retract: Surface thiet lap mat phang lui dao.

1. THIET LAP MAY GIA CONG:

- T MFG SETUP menu, click Workcell hoac click tren OperationSetup

Machine Name: Ten may s dung trong qua trnh gia cong. Ten mac nh cua mayla MACH01, MACH02, Ban co the anh lai ten bat ky vao ay.Machine Type: kieu may gia cong, co 4 kieu may gia cong:

Mill: Phay.Lathe: Tien.Mill/Turn: Phay va Tien.Wedm: May gia cong tia la ien.

Number of Axes: so truc cua may.Mill: 3, 4 va 5 truc.

Lathe: 1 va 2 turret.Mill/Turn: t 2 en 5 truc.

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Wedm: 2 va 4 truc.CNC Control: ten bo ieu khien.Location: v tr cua may gia cong.

- Chon loai may va so truc thch hp. Click vao OK hay Apply e nhan may

gia cong.Orientation: (ch co gia tr oi vi may Lathe hoac Mill/Turn) xac nh s nhhng tien: Horizontal (mac nh) hoac Vertical.

Horizontal: truc Z cua he truc toa o NC Sequence se nam ngang va truc Xthang ng hng len.

Vertical: truc Z cua he truc toa o NC Sequence hng thang ng len trenva truc X nam ngang hng qua phai.Cac trang tren hop oi thoai Machine Tool Setup e xac nh cac thong so cua motmay gia cong:Trang Output:Post Processor Options:

PP Name: ten cua chng trnh ieu khien mac nh ket noi vi may. anhten vao trong hop thoai.

ID: ID cua chng trnh ieu khien.Nut Reset cho phep ban thay oi ten chng trnh ieu khien va ID e he

thong mac nh.Defaults: cho phep ban ket noi mot v tr vi may.

PPRINT: m menu PPRINT e ban cai at cac tuy chon PPRINT.CL Command Output Options:FROM: xac nh dang FROM se c xuat thanh file CL data nh the nao:

Do Not Output (mac nh): dang khong FROM c xuat.Only At Start: dang FROM c xuat tai phan bat au cua file.At Every Tool Path: dang FROM c xuat phan bat au cua moi ng

chay dao gia cong.LOADTL: ieu khien xuat cua lenh LOADTL trong file CL data:Modal (mac nh): lenh LOADTL ch c xuat tai phan bat au cua CL data chomot ng chay dao neu mot dung cu cat thay oi la can thiet.Not Modal: xuat dang LOADTL tai phan bat au cua moi ng chay dao.COOLNT/OFF: ieu khien xuat cua dang COOLNT/OFF.Output (mac nh): trang thai COOLNT/OFF c xuat tai v tr ket thuc cua moing chay dao.Do Not Output: COOLNT/OFF c xuat ch mot lan, tai v tr ket thuc cua file.SPINDLE/OFF: ieu khien xuat cua trang thai SPINDLE/OFF.Output (mac nh): trang thai SPINDLE/OFF c xuat tai v tr ket thuc cua moi

ng chay dao.Do Not Output: SPINDLE/OFF ch c xuat mot lan, tai v tr ket thuc cua file.

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Multiple Axis Output Options: cac tuy chon ch co the oi vi dang may Mill khiNumber of Axis t 4 truc.Use Rotate Output: neu tuy chon nay khong c chon (mac nh), tat ca CL datac bien oi va xuat trong he truc toa o Zero cua chng trnh. Khi ban la chon

tuy chon nay, he thong co the c xuat bang lenh TRANS va ROTABL e xacnh nhng bien oi thang va xoay. Ch chon tuy chon nay khi lap e muc thanhmot v tr bang mi c yeu cau.Rotation Output Mode: ch co gia tr khi Use Rotate Output c chon. ieu khienxuat cua trang thai ROTABL. Cac gia tr la Incremental va Absolute.Rotation Direction: ch co gia tr khi Use Rotate Output c chon. Cho phep banxac nh s quay c thc hien trong mot hng ac biet. Cac gia tr la:Shortest (mac nh): tao mot di chuyen ngan nhat co the c ti v tr mi.CLW: luon luon quay cung chieu kim ong ho.CCLW: luon luon quay ngc chieu kim ong ho.Rotation Axis: xac nh truc quay: A-Axis hoac B-Axis (mac nh).Milling Capability: cac tuy chon ch tr nen co gia tr oi vi dang may Mill/Turn.Co cac tuy chon: Head 1 va Head 2.Cutter Compensation: khi ban m rong vung nay, tuy chon Output cutter positiontr nen co gia tr:

Tool Center: d lieu v tr dao cat au ra lien quan en tam dao.Tool Edge: d lieu v tr dao cat au ra lien quan en canh cat cua dao. Neu

ban la chon tuy chon nay, phai nhap gia tr vao o Safe Radius. Gia tr nay xac nhban knh goc lom nho nhat co the am bao an toan trong gia cong. Khi he thong tnhtoan ng chay dao cho mot chng trnh NC, no se kiem tra bat ky goc lom naoc gia cong eu khong nho hn (Cutter Diameter/2+Safe Radius). Neu mot gockhong thch hp vi ieu kien nay, he thong se bao loi bang dong nhac. Ban cungco the giam gia tr Safe Radius (neu co the) hoac s dung dao nho hn. Neu ngknh dung cu cat hien hanh cua ban ng knh dung cu cat cua chng trnh th sdung thong soComp.Oversize tren trang Setting cua hop thoai Tool Setup. Bangcach nay, ban knh lom an toan nho nhat c tnh toan la (CutterDiameter+Comp.Oversize)/2+Safe Radius).Bang danh sach Adjust Corner cho ban la chon mot tuy chon ieu kien goc oivi cac goc loi:

Straight: khi dao chay qua mot goc loi, ng chay dao bao gom 2 oanthang keo dai cho en khi chung dao nhau.

Fillet: khi dao chay qua mot goc loi, ng chay dao bao gom 2 oan thangc noi vi nhau bang mot cung tron.

Automatic: he thong them mot goc bo tron tai tat ca cac goc loi pha ben

ngoai bien dang cua Part, va mot goc lom tai tat ca cac goc loi pha ben trong biendang cua Part.

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Trang Spindle:Maximum Speed: toc o truc chnh cho phep toi a cho may gia cong. Hay

nhap gia tr toc o ln nhat vao RPM (vong/phut).Horsepower: ma lc truc chnh.

Trang Feed:Feed Units: chon nhanh n v lng an dao t bang danh sach Rapid

Traverse so xuong. Cac gia tr o la:IPM(mac nh): inch/phut.MMPM: mm/phut.

Feed Limits: nhap gia tr cua lng an dao trong o Rapid Feed Rate.Trang Cutting Tools:

Tool Change Time: thi gian can thiet e thay oi mot dao cat, tnh banggiay. Nhap gia tr vao hoac dung mui ten UP va DOWN ben canh e tang hoacgiam gia tr tng ng.

Nut Cutting Tool Setup m hop thoai Tool Setup e cho ban thiet lap dungcu cat thch hp vi may gia cong.Trang Travel: cho phep ban xac nh gii han di chuyen cho may: X-Axis Travel,Y-Axis Travel va Z-Axis Travel. Cac gia tr gii han di chuyen doc theo cac trucnen

2. THIET LAP O GA

-Tren Operation Setup, Click .

Fixture Setup Name: ten cua o ga

Chon e tao ra bo phan kep chat

Chon e nh ngha lai s la chon cua mot thanh phan o ga.

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Chon lap rap mot bo phan mi cua o ga.

Chon loai bo mot thanh phan cua o ga.

Chon chap nhan o ga a tao.

Chon huy bo o ga va tao.

3. THIET LAP HE TRUC TOA O CHO CHNG TRNH:

Click ben canh Machine Zero trongOperation Setupxuat hien menu MACH CSYS:

- Create:la chon mo hnhma he truc toa o se thuoctren o, sau o tao he tructoa o.

- Select: chon he truc toao bang cach la chon trenbang hoac s dung tuy chon Sel By Menu.

Click vao phoi, phoi se chuyen sang mau oxuat hien hop oi thoai

Click vao mot nh e lam goc toa o

Lan lt click vao o Use trong Orientation tab e chon hai truc cua he tructoa o

Chon canh e xac nh truc X va mot canh khac e xac nh truc vuong gocvi truc X (v du : truc Y).

Flip: e thay oi chieu cua truc toa o theo yeu cau.

Goc toao

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Khi viec thiet lap xong, click vao OK e ket thuc viec tao he truc toa o.

4. THIET LAP MAT PHANG LUI DAO:- Click vao ben canh Surface trong Retract, xuat hien hop oi thoai

Retract Surface Options.

Giai thch hop oi thoai:

SURFACE (mat phang):

Khi la chon Surface bao gom cac tuy chon sau:

Select: chon mot mat chuan, mot mat phang, hoac mot mat phang tren mohnh.

Create: tao mot mat phang chuan. Bao gom cac option e tao mat chuan nhla through, normal, paralle, offset, angle, tangent, bendsection.

Create surface: tao mot be mat. No bao gom cac lenh giong nh trong phanthiet ke part.

Along Z Axis: tao mot mat phang chuan vuong goc vi truc Z cua he truc toao NC Sequence. Nhap gia tr offset vao dong text Enter Z Depth.

SPHERE (mat cau):

Khi chon vao Sphere xuat hien Retract Sphere vi cac tuy chon sau:

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+ Set sphere center: tao tam mat cau:

Default: s dung tam mat nh, o la he truc toa o ma ban a nh nghamat phang Retract.

Select Csys: chon mot he truc toa oCreate Csys: tao mot he truc toa o

Select Datum Point: chon mot iem chuan.

Create Datum Point: tao mot iem chuan.

He thong se bieu th ten cua he truc toa o hoac iem chuan se lam tam hienhanh cua mat cau pha di cua nhom Set Sphere Center.

+ Specify Sphere Radius: xac nh ban knh mat cau. Co hai cach e xac nh banknh mat cau sau:

_Chon Sphere Radius va nhap gia tr vao dong text pha di.

_Chon Offset From Datum Point, nhom Set Offset Reference se csang len. No bao gom cac option sau ay:

Default:s dung tam mat cau lam chuan offset

Select Point: chon mot iem chuan e lam chuan offset.

Create Point: tao mot iem chuan e lam chuan offset.

CYLINDER (mat tru):

Khi chon vao Cylinder xuat hien Retract Cylinder vi cac tuy chon sau:

+ Set Cylinder Axis: tao truc cua mat tru:

Default: s dung tam mat nh, o la he truc toa o ma ban a nh nghamat phang Retract.

Select Axis: chon mot truc chuan.

Create Axis: tao mot truc chuan.

Select Csys: chon mot he truc toa o

Create Csys: tao mot he truc toa o.

+ Specify Sphere Radius: xac nh ban knh mat tru. Co hai cach e xac nh banknh mat tru sau:

_Chon Cylinder Radius va nhap gia tr vao dong text pha di.

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_Chon Offset From Datum Point, nhom Set Offset Reference se csang len. No bao gom cac option sau ay:

Default:s dung tam mat cau lam chuan offset

Select Point: chon mot iem chuan e lam chuan offset.Create Point: tao mot iem chuan e lam chuan offset.

Sau khi OK mat phang lui dao se xuat hien vi ten ADTM1 nh hnh sau:

Nh vay la ta a tao xong mat phang lui dao.

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CHNG IV

THIET LAP CAC THONG SO GIA CONG

Sau khi thiet lap xong cac thong so cong nghe, ta tien hanhthiet lap cac thong so gia cong.

1. Thiet lap phng phap gia cong:

T menu MANUFACTURE. Ta chon NC Sequence t menuMachining e thiet lap trnh t gia cong

Xuat hien menu MACH AUXchon Machiningxuat hienSubmenu vi cac phng phap gia cong tren may phay nh sau:

Volume: phay tng lp vi cach ieu khien 2,5 truc e cat vatlieu t mot the tch.

Local Mill: cat bo vat lieu con sot lai t nguyen cong trc.

Surface Mill: phay vi cach ieu khien t 3 en 5 truc e giacong mat thang hoac nghieng, mat cong.

Face: phay nhng mat phang i xuong cua phoi

Profile: phay vi cach ieu khien t 3 en 5 truc e gia congnhng mat thang ng hoac mat nghieng (gia cong bang mat trucua dao).

Pocketing: phay cac dang mat dang tui rong.

Trajectory: dung cu cat chuyen ong theo mot quy ao xacnh, t 3 en 5 truc.

Holemaking: khoan, doa, taro.

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Thread: phay vat lieu tren mat cua khoi truc theo ng xoan oc.

Engraving: dung cu cat chuyen ong theo cac ng ve trang tr, t 3 en 5 truc.

Plunge: phay theo kieu uc.

Sau khi chon phng phap phay, chon Donexuat hien menu NCSEQUENCE va menu Seq Setup.

Name: ten cua chng trnh NC Sequence. Comments: chu thch cho chng trnh NC Sequence c liet

ke trong Manufacturing Info. Tool: thay oi hoac thiet lap dung cu cat. Parameters: thiet lap hoac thay oi thong so gia cong. Coord Csys: he truc toa o ac biet cua NC Sequence. Retract: mat phang lui dao. Ch xuat hien trong gia cong phay

va lam lo ren. Volume: thiet lap the tch gia cong. Window: tao hay chon ca so gia cong.Close Loops: tao vong khep kn cho goc dch chuyen dao. Scallopsurf: chon nhng be mat co o nham a c xac nh. Excld Surfs: xac nh mat khong gian e loai bo. Top Surfaces: thiet lap tren be mat ma Mill Volume co the thiet

lap ng chay dao. Ch s dung trng hp nay khi mat tren cuachi tiet khong song song vi mat phang lui dao. Apps Walls: chon mat hong cua Mill Volume, hay mat hong cua

Mill Volume, co the c dung cho luc vao va ra dao. Build Cut: thiet lap ham Build Cut. Start: chon iem bat au cho ng chay dao cua chng trnh

NC. End: chon iem cuoi cho ng chay dao cua chng trnh NC. Done: chap nhan cac la chon trong menu Seq Setup. Quit: khong chap nhan cac la chon.

Chon Done e chap nhan cac la chon xuat hien hop thoai Tools Setup ekhai bao dung cu cat.

2. Thiet lap dao cat:

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Sau khi khai bao xong chon Preview e xem anh cua dao Apply lu lai

thong so cua dao cho chng trnh NC Sequence hien hanh, ta chon File e lu daova cai at. Dung cu se c lu vi uoi .tpm.

-New: tao mot dao mi

-Open Tool Library: m th vien dao-Open Parameter File: xem cac file ve thong so dao co san tren th vien

dao.

-Save Tool: lu dao va thiet lap.

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Giai thch hop oi thoai TOOL SETUP

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: thiet lap mot dao mi

: m mot dao a thiet lap trc

: lu dao va thiet lap.: hien th menu INFORMATION

WINDOW (tool.inf).

: xoa mot dao cat a thiet lap.

Name: ten cua dao cat (v du: T0001).

Type: chon mot trong nhng dang cua dao co the s dung trong Pro/NC. Dang cuadao tng ng vi dang cua NC sequence c thc hien trong may.Material: xac nh vat lieu lam dao.

Units: n v chieu dai cua dao.

Phan di cua hop oi thoai gom co 4 trang: Geometry, Settings, Speeds&Feed, va BOM.

Trang Geometry bao gom cac text box e nh ngha cac thong so hnh hoc, o lacac thong so e xac nh tat ca cac kch thc cua dao. Cac gia tr kch thc nayc s dung e tnh toan ng chay dao va vat lieu c cat bo.

Cutter Diameter: ng knh dao cat.

Length: chieu dai dao cat.

Corner Radius: ban knh goc cua dao cat.

Side Angle: goc gia ng tam dao va ng xien cua dao.

Number of Teeth: so rang cua dao cat

Trang Settings bao gom cac text box e nh ngha cac yeu to cua ban dao.

Tool Number: tng ng vi Number cua Tool Table, no xac nh so cua odao.

Offset Number: tng ng vi Offset cua Tool Table, no cung cap mot giatr cho may o chieu dai dung cu o.

Gauge X Length: chieu dai o dao theo truc X.

Gauge Z Length: chieu dai o dao theo truc Z.

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e hieu chnh thong so, nhap chuot vao cac o trong e nhap cac gia tr. Gia

tr se xuat hien trong o trong pha tren cua hop oi thoai va phu thuoc vao cac loaithong so.

Khi ta nhap gia tr trong Input he thong se chuyen cac gia tr en cac o thchhp. Neu ban a con tro en v tr thch hp e hieu chnh, trong Input se t ongthay oi theo.

Khi nhap cac gia tr ban co the click trc tiep len thong so can thay oi, giatr cua thong so se hien th trong dong Input.Khi hieu chnh cac gia tr thong so o la cac chuoi gia tr, nh SCAN_TYPE,

a mui ten hng xuong pha phai cua Input. Danh muc se xuat hien vi tat ca cacgia tr cho thong so nay.

Nhan Edit trong menu cua hop oi thoai cho phep ban copy cac gia tr thongso sau o chuyen vao o trong khac, hay vi tat ca cac o trong trong mot hang. Str giup ac biet nay khi hieu chnh thong so cho chng trnh NC Sequence ma conhieu ng cat.

Chon Save t menu MFG PARAMS neu ban muon lu tap tin nay va nhapten tap tin o. No t ong lu vao mot tap tin m rong tng ng vi kieu chngtrnh NC Sequence ban ang tao.

e hoan thanh viec hieu chnh thong so chon FileExit.Trong Manufacturing Parameters:

CUT_FEED: lng an dao (toc o di chuyen cua tam dao) tnh bang mm/p.

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STEP_DEPTH +CUTTER_DIAM/2

STEP_DEPTH: bc an dao doc (chieu sau cua moi lp cat).

STEP_OVER: bc an dao ngang cua dao phay (khoang cach gia hai

ng di chuyen dao tren cung mot lp phay).

PROF_STOCK_ALLOW: lngd e lai mat ben dung e gia cong tinh bc tiep theo.

ROUGH_STOCK_ALLOW: lng d e lai mat ben dung e gia congtho bc ke tiep.

Tool path STEP_DEPTH

Mill volume walls(side view)

STEP_OVER

Tool path

PROF_STOCK_ALLOW

ROUGH_STOCK_ALLOW

Pocket

Pocket

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BOTTOM_STOCK_ALLOW: lng d e lai mat ay dung e gia cong bc tiep.

CUT_ANGLE: goc di chuyen cua dao so vi phng X.

SCAN_TYPE: cach quet dao khi gia cong.

TYPE_1: dao lui len mat phang Retract khi gap ao.

CUT_ANGLE 00 CUT_ANGLE 900

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TYPE_2: dao di chuyen vong sang ben hong khi gap ao.

TYPE_3: dao phay tng vung hai ben hong ao.

TYPE_SPIRAL: dao di chuyen theo ng xoan oc.

TYPE_ONE_DIR: Dao cat ch cat theo mot hng. Khi ket thuc mot ngchuyen ong cat, dao se lui len va chay tr lai pha oi dien cua phoi tai v tr batau cua ng cat tiep theo, sau o thc hien chuyen ong cat theo hng tngt.

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TYPE_1_CONNECT: Dao cat ch cat theo mot hng. Khi ket thuc mot ngchuyen ong cat, dao se lui len va chay tr lai pha oi dien cua phoi tai v tr batau cua ng cat va thc hien, uc xuong, sau o di chuyen ti v tr bat au

cua ng cat ke tiep, thc hien chuyen ong cat.

CONSTANT_LOAD: thc hien gia cong tho vi toc o cao (viROUGH_OPTION la ROUGH_ONLY) hoac gia cong tinh (viROUGH_OPTION la PROF_ONLY).

SPIRAL_MAINTAIN_CUT_TYPE: Gia cong theo ng xoan oc vi cungao chieu gia cac ng chuyen ong cat.

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SPIRAL_MAINTAIN_CUT_DIRECTION: Gia cong theo ng xoan oc vicung hnh ch S noi gia cac chuyen ong cat.

FOLLOW_HARDWALLS: Hnh dang cua moi chuyen ong cat la hnh dangcua cac thanh cua the tch gia cong. Neu cac ng cat la kn, th cac ng catnoi vi nhau bang cung ch S.

ROUGH_OPTION: chon kieu gia cong tho (7 cach). Neu ch len mui ten lietke, se thay xuat hien mot danh sach co cac la chon sau:

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ROUGH_ONLY: ch gia cong ben trong the tch gia cong, khong gia cong biendang xung quanh.

ROUGH_&_PROF: Tao mot chu trnh gia cong ma cat tho the tch gia congtrc, sau o gia cong tinh lai cac be mat the tch gia cong.

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PROF_&_ROUGH: Gia cong cac be mat cua the tch gia cong trc, sau ogia cong phan con lai ben trong the tch gia cong.

PROF_ONLY: Ch co bien dang xung quanh c gia cong.

ROUGH_&_CLEAN_UP: Gia cong tinh cac thanh cua the tch gia cong makhong chay dao doc theo bien dang xung quanh. Neu SCAN_TYPE c thiet lapla TYPE_3, lien ket cac chuyen ong cat theo phng ngang ben trong moi lat cattheo cac thanh cua the tch gia cong. Neu SCAN_TYPE c thiet lap la

TYPE_ONE_DIR dao cat se di chuyen theo phng thang ng cua cac thanh cuathe tch gia cong khi ot xuong va lui dao len.

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POCKETING: Gia cong bien dang cac thanh cua the tch gia cong va gia congket thuc tat ca cac be mat nam ben trong the tch gia cong ma no song song vimat phang lui dao.

FACE_ONLY: Ch gia cong be mat cuoi cung nam ben trong the tch gia congma song song vi mat phang lui dao.

ROUGH&CLEAN_UPwith TYPE_3

ROUGH&CLEAN_UPwith TYPE_ONE_DIR

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SPINDLE_SPEED: so vong quay truc chnh. COOLANT_OPTIONS: chon cach ti dung dch trn nguoi.

FLOOD: ti doi dao vao vung gia cong. MIST: ti theo dang phun sng. OFF: tat. ON: bat. TAP: ti dung dch trn nguoi dung cho gia cong ren. THRU: ti xuyen qua dung cu cat.

CLEAR_DIST: khoang cach an toan gia dung cu cat va phoi khichay dao nhanh.

Sau khi khai bao xong cac thong so cong nghe, ta chon FileSavexuat hienhop thoai Save Parameters:

Ta go ten cho thong so va cai at va chon OK e lu lai cac thong so o.

4. TAO THE TCH GIA CONG:

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Sau khi khai bao xong cac thong so ta chon Donexuat hien menu DIFINEVOLchon Create Vol e bat au tao the tch gia cong.

Xuat hien dong nhacEnter name for the milling volumeta nhap ten cho thetch phay ma ta se tao (the tch phay la the tch ma dao se cat bo i)OKxuathien menu CREATE VOL vi 2 la chon sau:

-Gather: chon cac be mat e xac nh the tch can phay.

-Sketch: ve the tch phay trong moi trng Sketch.

GATHER:Khi chon Gather xuat hien menu GATHER STEPS vi cac la chon sau:

-Select: chon cac mat hoac feature.-Exclude: loai cac mat hoac cac feature sau khi select.-Fill: tram cac lo hong.

-Close: ong kn the tch c chon t cac mat bi mattren hoac ng vien mat ay.

Chon SelectDonexuat hien menu GATHER SEL vi cacla chon sau:

-Surf & Bnd: chon mot mat phang lam viec va bien dangcua be mat chng trnh se chap nhan be mat c chon va cacmat xung quanh no cung c chon.

-Surfaces: chon tng be mat rieng biet.-Features: chon cac feature.-Mill Surface: chon mat phay.

Ta chon SurfaceDoneClick len mat cua chi tiet tham chieuOKDoneRefs.

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e xem the tch can phay a c tao ra ta chon Show

Volume. Khi o the tch phay xuat hien tren man hnh vimau tm (mac nh).

Luc nay tren menu CREATE VOL cac la chon sau co hieu lc Round, Trim,Offset.

Round: bo tron the tch can phay.

Trim: cat xen khoi the tch can phay.Offset: m rong Volume eu ra vi mot the tch khong

oi.

SKETCH:Khi ta chon Sketch xuat hien menu SOLID OPTS vi cac la chon sau:

Extrude: tao mot be mat theo mot phng thang t matphang ve phac

Revolve: tao mot the tch bang cach xoay tron mat vephac quanh mot ng tam (tao khoi tron xoay).

Sweep:tao mot the tch bang cach quet theo mot quy aophac thao

Blend: tao the tch bang cach ket noi cac mat phang laithanh mot Solid

Solid: tao mot khoi acThin: tao mot khoi mong

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Khi ta chon Offset: sub-menu OPTIONS xuat hien vi cac la chon sau:

Wall: tat ca cac mat ben hong se song songSurface: chon be mat e Offset

Tool Radius: Offset khoang cach bang ban knh dung cu cat.Value: Offset khoang cach se c nhap vao. Nhap gia trkhoang cach

Horizontal: canh mat ay se Offset song song vi mat phangXY

Tangential: canh cua mat ay se tiep tuyen vi mat phang XY

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CHNG VMO PHONG CHNG TRNH GIA CONG

e mo phong chng trnh gia cong th trc o ta a co chi tiet can gia cong.

Viec tao phoi, chon may, chon o ga, dung cu cat va cac thong so gia cong phaic thiet lap trc o. Sau khi thiet lap xong ta vao menu NC Sequence e batau cong viec mo phong. Hoac trc o a co file gia cong, th ta ch viec goi fileo vao man hnh gia cong va thc hien cac chu trnh gia cong.I. Mo phong chng trnh gia cong:

Trong menu MANUFACTUREMACHININGNC SEQUENCE:

Ta chon vao Play Path e xac lap ng chay dao chnh e hoan thanh chngtrnh NC Sequence.

Khi chon Play Path xuat hien menu PLAY PATH vi cac la chon sau:

Screen Play: xem ng chay dao.NC Check: xem viec mo phong dang ac.Gouge Check: kiem tra v tr dao an vao chi tiet.

Khi ta chon Screen Play th xuat hien hop thoai PLAY PATH, ong thi trenman hnh xuat hien dung cu cat va ng di chuyen dao mau o.

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Display Speed: hien th toc o cua dao di chuyen trong qua trnh cat- Slow: cham- Fast: nhanh

(Play): dao bat au cong viec cat vat lieu.

(Stop): dng cong viec cat mot cach khan cap

Position Cutting Tool: ch ra v tr e dao cat di chuyen en.Tool Clearance: lam sach dung cu cat.FileSave: lu lai chng trnh a c mo phong.Close: ong hop thoai PLAY PATH e ket thuc viec mo phong ng chay

dao.

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Khi chon NC Check se xuat hien hnh anh cua trung tam gia cong vi a chwww.cgtech.com.

Va man hnh gia cong mau xanh

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Trong man hnh gia cong th phoi dang ac vi mau hien th la mau vang.Di goc trai man hnh xuat hien dong thong bao nhng cong viec thc hien

trong suot qua trnh gia cong.Di goc phai man hnh la cac Button:

(Play to End): dao bat au cong viec cat vat lieu theo cac ng chaydao a c nh ngha trc o.

(Single Step): dao thc hien cong viec cat vat lieu tng dong lenh hay

c hieu la gia cong theo bc.

(Stop): dng cong viec cat vat lieu ngay sau bc di chuyen dao haymot lenh GOTO.

(Rewind Toolpath): thc hien viec lui dao lai hay giau dao sau quatrnh gia cong.

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(Reset Model): sau khi gia cong xong an nut Reset phoi se tr ve hientrang nh luc cha gia cong.

Pha tren man hnh la menu chnh va hai thanh toolbar vi cac button e thchien toan bo cong viec hieu chnh phoi, may, dung cu cat va cac bien man hnhcung nh viec mo phong qua trnh gia cong.

1. (open user file): m file vi uoi *usr can mo phong

2. (save user file): lu file a c mo phong

3. (Color): thay oi mau cho nen, phoi, dung cu cat, v.v

4. (Setup Toolpath):

Khi ta chon nut xuat hien hop thoai Toolpath:

Add: thc hien viec goi chu trnh cho qua trnh cat.Replace: thay oi chu trnh a c goi ra.Delete: xoa chu trnh c goi ra.

OK: chap nhan viec goi chu trnh.

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Cancel: khong chap nhan.

5. (Setup Motion): Hieu chnh toc o di chuyen cua dao.

Khi chon nut xuat hien hop thoai Motion:

- Animation Speed: hien th toc o di chuyen cua dao trong viec cat vat lieu dang at cua man hnh gia cong.

Smooth: chamFast: nhanh.

- Tool Display: hien th daoOff: khong hien th dao trong qua trnh catSolid: hien th dao dang ac.Translucent: hien th dao dang trong suot.

- Chap nhan cac hieu chnh: chon Apply

OK.- Khong chap nhan: Cancel

1. (View Toolpath): hien th chng trnh gia cong c he thong t ongtao ra, vi cac lenh GOTO dao se di chuyen en cac toa o a c tao ra.

Khi ta chon xuat hien hop thoai Toolpath File:

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Khi an nut bat au gia cong tren man hnh th mui ten xanh trong hop thoai

Toolpath File di chuyen en tng dong lenh. ong thi dung cu cat bat au ckch hoat, dao thc hien cong viec cat vat lieu cho en dong lenh cuoi cung.

Sau khi thc hien cac bc gia cong xong th tren man hnh gia cong ta thuc ket qua mo phong nh sau:

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Khi ta chon Gouge Check e kiem tra v tr dao am vao chi tiet gia cong.Khi o he thong xuat hien thong bao Select surfaces or quilts for gouge checks.

Ch len mat phang cua chi tiet, chon Done/Return 2 lan xuat hien menuGOUGE CHECK vi cac la chon sau:

Surface: chon mat phang e kiem traTolerante: ch nh dung sai cho lap ghepStep: ch nh bc nhay khi kiem tra.Run: chay

Khi chon Runxuat hien menu SHOW GOUGE:Show All: the hien tat ca cac iem kiem tra.

Next: i en iem ke tiepPrevious: tr ve iem trc oInfo: xuat hien bang thong bao cac toa o iem ma dao di

chuyen en.

Khi ta chon Seq Info xuat hien menu INFO LIST nhsau:

chon Done Sel xuat hien bang thong bao INFORMATIONWINDOW the hien tat ca cac thong tin c ban ma ta a khai baotrong suot qua trnh gia cong.

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II. Mo phong toan bo qua trnh gia cong:Sau khi a mo phong qua trnh gia cong, chon Done Seqe

ket thuc che o khai bao cong nghe va mo phong.Chap nhan ket qua at c, tr ve menuMANUFACTURE MACHINING CL

DATAOutput.- Select One: mo phong tng bc cong

nghe. Trong menu SELECT FEAT chonOperation or NC Sequence e chon chngtrnh gia cong.Trong menu NC SEQLIST chon Volume

MillingDonequa trnh mo phong xay ra.Neu chon Select One th ta co the chon tng bc cong nghe nhng nh vay th takhong the xuat toan bo chng trnh cho cac bc cong nghe.

_Select Set: mo phong toan bo qua trnh gia cong.Chon Select Setxuat hien dong nhac Select Operation or NCSequencechon CreateSet 01.T menu CREATE SET chon 0P010tat ca cac bc congnghe eu c chon Done Seq chon Set 01 t menuSELECT SETDone t menu DISP CL ta se trong thay quatrnh di chuyen dung cu cat cua cac bc cong nghe tren man

hnh gia cong.

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CHNG VITRNH T TAO TAP TIN NC

Tren menu CL Data chon Output xuat hien:

Chon vao NC SequenceDone.

Chon vao Volume Milling, Operation:0P010 tren NC SEQ LIST

Tren menu PATH chon File. Xuat hien menu OUTPUTTYPE.CL File: xuat file chng trnh vi uoi (*.ncl).MCD File: xuat ra mot file chng trnh nh tren va sau

o tien hanh qua trnh gia cong.Interactive: theo cach tng tac.Chon Donexuat hien hop thoai Save a Copy nhap ten

vao sau o chon OK e chap nhan ten o.

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Sau khi chon OKxuat hien hop thoai PP OTIONS chap nhan cac tuy chonchon Done.

Sau khi chon Donexuat hien mneu PP List:

Chon UNCX01.P11xuat hien bang thong bao

Sau khi nhap so chng trnh vao dong ENTER PROGRAM NUMBER, he

thong se t ong tao ra tap tin vi uoi (*.tap).

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Vi tap tin NC a c tao ra, chung ta co the xuat sang may CNC e gia cong.

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CHNG VIICAC CHU TRNH GIA CONG

e gia cong c mot chi tiet, th ieu kien au tien la ta phai co mot chi tiet

co kch thc trong PART ma ta a tao trc o. Sau o ta phai thiet lap cac thongso can thiet nh: goi chi tiet vao moi trng gia cong, thiet lap phoi, thiet lap may,he truc toa o, mat phang lui dao, o ga, dao, cac thong so gia cong. Mot chu trnhphay ch cho phep thc hien khi cac thong so tren a c thiet lap. Vi phanManufacturing Pro/E (Pro/MFG) ho tr cho viec lap trnh gia cong nhng chi tiett n gian en phc tap mot cach tng oi de dang.

I. GIA CONG THE TCH (VOLUME):Mill volume la mot chu trnh gia cong lam chuyen dch vat lieu ben trong

mot the tch phay theo tng lat. Tat ca cac lat cat la nhng mat song song vi matphang XY cua he truc toa o cua NC Sequence. Chieu sau cua tng lat cat theochieu truc Z va chung c nh ngha bi tham so STEP_DEPTH. Lat au tienc sinh ra di be mat TOP cua the tch phay. Tat ca cac mat phang ben trong thetch phay phai vuong goc vi truc Z cua he truc toa o NC Sequence.

Mot Mill Volume (the tch gia cong) co the c nh ngha (hay tao ra)trong suot thi gian tao ra chng trnh gia cong, hoac c nh ngha trc motMill Volume t menu MANUFACTURE hay t menu MACHING chon MfgSetup sau o chon MFG GEOMETRY, tiep tuc chon Mill Volume.

Khi tao chi tiet ta can chu y cho chi tiet hng len tren bang cach chon matphang ve phac hay mat phang chuan sao cho song song vi mat phang XY cua hetruc toa o cua chng trnh NC. Chng trnh gia cong the tch chu yeu dung chogia cong tho, trong mot so trng hp cung co the gia cong tinh. Trong trng hpgia cong tho chu yeu la gia cong boc lp trc khi s dung cac phng phap giacong khac tiep theo.

e thiet lap mot chu trnh gia cong the tch ta tien hanh nh sau:1. Trc tien ta phai goi chi tiet vao man hnh gia cong, tao phoi, thiet lap cac

thong so cong nghe nh: may, dao, o ga,.v.v. Sau khi thiet lap xong cac thong socong nghe ta tr ve menu MANUFACTURE. Khi o ta chon NC Sequence tmenu Machining e thiet lap trnh t gia cong xuat hien menu MACH AUXchon Machiningxuat hien Submenu cac phng phap gia cong tren may phay.

Volume: phay tng lp vi cach ieu khien 2,5 truc e cat vat lieu t mot thetch.

Local Mill: cat bo vat lieu con sot lai t nguyen cong trc.

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Surface Mill: phay vi cach ieu khien t 3en 5 truc e gia cong mat thang hoac nghieng,mat cong.

Face: phay nhng mat phang i xuong cuaphoi

Profile: phay vi cach ieu khien t 3 en 5truc e gia cong nhng mat thang ng hoacmat nghieng (gia cong bang mat tru cua dao).

Pocketing: phay cac dang mat dang tui rong.

Trajectory: dung cu cat chuyen ong theomot quy ao xac nh, t 3 en 5 truc.

Holemaking: khoan, doa, taro.

Thread: phay vat lieu tren mat cua khoi tructheo ng xoan oc.

Engraving: dung cu cat chuyen ong theocac ng ve trang tr, t 3 en 5 truc.

Plunge: phay theo kieu uc.

Roughing: gia cong thoReroughing: gia cong tinh lai

e gia cong the tch ta chon phng phap phay VOLUME. Saukhi chon phng phap phay xong, ta chon Donexuat hien menuNC Sequence va menu SEQ SETUP.

Khi chon Seq Setup t menu NC Sequence, menu SEQ SETUP se xuat hienvi cac la chon sau, tuy thuoc vao loai NC Sequence ma co the them hoac bt cac

la chon o. Name: ten cua chng trnh NC Sequence. Comments: chu thch cho chng trnh NC Sequence c liet ke trong

Manufacturing Info. Tool: thay oi hoac thiet lap dung cu cat. Parameters: thiet lap hoac thay oi thong so gia cong. Coord Csys: he truc toa o ac biet cua NC Sequence. Retract: mat phang lui dao. Ch xuat hien trong gia cong phay va lam lo ren.

Volume: thiet lap the tch gia cong. Window: tao hay chon ca so gia cong.

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Close Loops: tao vong khep kn cho goc dch chuyen dao. Scallopsurf: chon nhng be mat co o nham a c xac nh. Excld Surfs: xac nh mat khong gian e loai bo. Top Surfaces: thiet lap tren be mat ma Mill Volume co the thiet lap ng chay

dao. Ch s dung trng hp nay khi mat tren cua chi tiet khong song song vi matphang lui dao. Apps Walls: chon mat hong cua Mill Volume, hay mat hong cua Mill Volume,

co the c dung cho luc vao va ra dao. Build Cut: thiet lap ham Build Cut. Start: chon iem bat au cho ng chay dao cua chng trnh NC. End: chon iem cuoi cho ng chay dao cua chng trnh NC. Done: chap nhan cac la chon trong menu Seq Setup.

Quit: khong chap nhan cac la chon.Ta chon n e chap nhan cac la chon mac nh: Tool, Parameters, Volume.2. Sau khi chon Donexuat hien hop thoai Tools Setup e khai bao dung cu

cat:

Aplly: dung cu cat bat au co hieu lc.Preview: xem s thay oi cua dao khi ta thay oi cac thong so.Tool Window: xem dung cu cat vi mot man hnh Window.Name: ten cua dung cu cat (mac nh T0001).

Type: kieu dao ng vi loai gia cong (mac nh MILLING).

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Material: vat lieu cua dung cu cat.Units: n v (mac nh Millimeter).Cutter Diameter: ng knh dao.Lengh: chieu dai dao.

Corner Radius: ban knh bo cua dao.Side Angle: goc nghieng cua dao.Number of Teeth: so rang cua dao.OK: chap nhan cac thong so cua dung cu cat.Cancel: khong chap nhan.

Sau khi khai bao xong chon Preview e xem anh cua dao Apply lu laithong so cua dao cho chng trnh NC Sequence hien hanh, ta chon File e lu daova cai at. Dung cu se c lu vi uoi .tpm.

New: tao mot dao mi Open Tool Library: m th vien dao

Open Parameter File: xem cac file vethong so dao co san tren th vien dao.

Save Tool: lu dao va thiet lap.

Chon OK e ket thuc qua trnh khai bao dao.

3. Sau khi khai bao dao xong chon MFG PARAMS vi cac la chon sau:

Site: thiet lap cac thong so chuyen biet hay thongdung e dung ve sau.

Visibility: thiet lap cac thong so cho phep the hien trenman hnh.

Set: thiet lap hoac chnh sa quy trnh cong nghe.

Retrieve: truy tm quy trnh cong nghe co san.

Save: lu quy trnh cong nghe.

T menu MFG PARAMS ta chon Set e khai bao quy trnh cong nghe xuathien hop thoai Param Tree:

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Trong hop thoai, y ngha cac thong so trong Advanced nh sau:

a. NAME:NCL_FILE: Ten mac nh cua tap tin CL cho chu trnh NC. Mac nh la motdau gach au dong, he thong se t at mot ten mac nh trong trng hp nay.PRE_MACHINING_FILE: Nhap ten cua tap tin ma ban muon c baogom ngay tai phan bat au cua tap tin CL. Tap tin phai c at trong th muchien hanh cua ban va co phan m rong la .ncl.

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POST_MACHINING_FILE: Nhap ten cua tap tin ma ban muon c baogom ngay tai phan cuoi cua tap tin CL. Tap tin phai c at trong th muchien hanh cua ban va co phan m rong la .ncl.b. CUT OPTION:POCKET_EXTEND: nh ngha v tr cua dao khi gia cong canh cua math ben trong the tch gia cong. Thong so nay chi c s dung khiROUGH_OPTION la POCKETING hoac FACE_ONLY.

TOOL_ON (mac nh): Dao dng khi tam dao cham vao mat gii hanTOOL_TO: Dao dng khi canh au cua no cham vao mat gii han.TOOL_PAST: Dao dng khi canh cuoi cua no cham vao mat gii han.

TRIM_TO-WORKPIECE:Trong gia cong VOLUME, neu thiet lap la YES, th gii han cua the

tch gia cong ben trong bien dang phoi, th t tranh vung gia cong. Neu thietlap la NO (mac nh), th ch cat theo phng Z. CUT_DIRECTION:

oi vi gia cong VOLUME, cho phep ban ao chieu chuyen ong cattrong 1 lat cat. Cac gia tr cua no la STANDARD va REVERSE. CUT_TYPE:

Bao gom cac tuy chon: CLIMB, UPCUT va ZIG_ZAG. Co the ket hp vicac tuy chon cua SPINDLE SENSE va cho ra ket qua ng chay dao la:

CLIMB va CW: Dao cat en t ben trai (mac nh).UPCUT va CW: Dao cat en t ben phai.UPCUT va CW: Dao cat en t ben trai.CLIMB va CW: Dao cat en t ben phai.ZIG_ZAG: Hng chuyen ong cat thay oi tren tng lat cat.

PLUNGE_PREVIOUS:oi vi gia cong VOLUME, khi SCAN_TYPE la TYPE_3, xac nh v

tr ma dao cat se cat xuong khi bat au gia cong mot the tch mi.YES: Dao cat ot xuong pha ben trong the tch gia cong trc o, sau o mi

di chuyen sang the tch gia cong mi.NO: Dao cat ot xuong pha ben trong the tch mi.

RETRACT_OPTION: Bao gom cac gia tr la:OPTIMIZE (mac nh): Lng lui dao nho nhat khi thieu chieu cao

nho nhat. Dao cat se lui en mat phang lui en mat phang chuyen ong neuc xac nh cho chu trnh NC, hoac neu khong th lui en mat phang luidao.

NOT_OPTIMIZE: Dao cat lui en gia hai lat cat neu lat cat th 2 khong

bat au ngay sau v tr dao cat hien hanh. No cung lui en gia chuyen ong giacong tho va gia cong tinh ngay trong mot lat cat neu ROUGH_OPTION la

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ROUGH_&_PROF hoac PROF_&_ROUGH. Xac nh NOT_OPTIMIZE neuOPTIMIZE gay ra va cham. Dao cat lui en mat phang chuyen ong hoac matphang lui dao.

SMART: So lan lui dao va chieu cao lui dao nho nhat. oi vi moi lan lui

dao trung gian trong chu trnh NC, he thong tnh toan mot mc an toan cho dung cucat e chuyen ong ti mot v tr mi. Mc an toan nay c xac nh la mc cua latcat di cung ma khong gay can tr tren ng i cua dao, cong vi gia trPULLOUT-DIST neu c xac nh.

ALWAYS: Dung cu cat lui en mat phang lui dao sau moi lat cat.c. CUT_PARAM: STEP_DEPTH: Chieu sau cua moi lat cat trong qua trnh gia cong NC,STEP_DEPTH phai ln hn zero. Mac nh cua thong so nay khong c thiet lap. MIN_STEP_DEPTH: e xac nh khoang cach gia cac lat cat co the chap nhanc. Mot lat cat se c bo qua neu khoang cach gia no va lat cat trc no nhohn gia tr MIN_STEP_DEPTH. WALL_SCALLOP_HGT: ieu chnh chieu sau cat oi vi gia cong Volume.WALL_SCALLOP_HGT phai nho hn hoac bang ban knh dao cat. Mac nh cuano la 0. BOTTOM_SCALLOP_HGT: Dung e ieu chnh lng chay dao ngang oi vigia cong Volume. ROUGH_STOCK_ALLOW va PROR_STOCK_ALLOW: Lng d con lai sau

cat tho e gia cong tinh. Ca hai thong so nay eu c s dung trong gia congVolume Milling, va xac nh lng d cho phep khac nhau oi vi cat tho va cattinh. Gia tr cua thong so PROF_STOCK_ALLOW phai nho hn hoac bangROUGH_STOCK_ALLOW. BOTTOM_STOCK_ALLOW: Lng d con lai sau khi gia cong tho tren be matphang song song mat phang lui dao. Mac nh la mot dau gach au dong. Trongtrng hp ma thong so BOTTOM_STOCK_ALLOW c bo qua, th thong soPROF_STOCK_ALLOW se c dung e thay the cho no. STEP_OVER: Lng dch chuyen dao ngang. Gia tr thong so STEP_OVER phai

la mot gia tr dng va nho hn hoac bang ng knh dao cat. Mac nh thong sonay khong c thiet lap. TOOL_OVERLAP: Thay the cho STEP_OVER. No xac nh lng ma dung cucat co the goi chong len phan a gia cong trc o. Neu TOOL_OVERLAP cxac nh va STEP_OVER khong c xac nh th STEP_OVER se c tnh bang:CUTTER_DIAM TOOL_OVERLAP CORNER_ROUND_RADIUS: Xac nh goc nho nhat cho phep oi vi cac goclom toc o cao. Mac nh la 0. CUT_ANGLE: Goc gia phng cua chuyen ong cat va truc X cua he truc toao chng trnh NC. Mac nh la 0. CUT_ANGLE se c bo i oi vi gia cong

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Volume, Plunge, Pocketing va Projected Cuts Surface neu SCAN_TYPE laTYPE_SPIRAL. AXIS_SHIFT: Cho phep ban thay oi v tr dao cat doc theo truc dao. Neu thietlap la 1 gia tr dng, v tr cua dao cat se tien xuong khoi Model mot lng bang

gia tr o; neu mot gia tr am th dao se lui len.d. FEED: ARC_FEED: Cho phep ban ieu chnh toc o chay dao vong qua cac cung. Macnh la mot dau gach au dong(-), CUT_FEED se c s dung trong trng hpnay. Neu thiet lap la 0, th trang thai RAPID se c xuat ra trc trang thaiCIRCLE. ARC_FEED_CONTROL: Xac nh e tnh toan gia tr toc o chay dao vong quacac cung nh the nao. Gom cac tuy chon sau:

TOOL_CENTER (mac nh): Toc o chay dao ma au ra oi vi trang thaiCIRCLE la luon luon bang vi gia tr xac nh cho ARC_FEED.

TOOL_PERIMETER: Toc o chay dao ma au ra oi vi trang thaiCIRCLE la ieu chnh e am bao iem tiep xuc gia dao va vat lieu di chuyen vimot van toc bang gia tr xac nh cho ARC_FEED. ieu nay co ngha la gia trARC_FEED se phai c tnh toan oi vi moi trang thai CIRCLE tng ng viquy luat sau:

oi vi pha ben trong:feed=ARC_FEED.{ban knh cung tron/(ban knh cung tron +CUTTER_DIAM/2)}

oi vi pha ben ngoai:feed=ARC_FEED.{ban knh cung tron/(ban knh cung tron -CUTTER_DIAM/2)}TRAVERSE_FEED: Cho phep ban thiet lap mot toc o chay dao cho tat cadung cu cat trong chuyen ong ngang. Mac nh la mot dau gach au dong,lenh RAPID se c a ra trong d lieu v tr dao (CL) trong trng hp nay. WALL_PROFILE_CUT_FEED:

oi vi mot vai dang cua gia cong the tch toc o cao (khiSCAN_TYPE la SPIRAL_MAINTIAN_CUT_TYPE hoacSPIRAL_MAINTIAN_CUT_DIRECTION) cho phep ban thiet lap mot toc ochay dao nho hn cho chuyen ong au tien, khi dao cat ang cat vat lieu ca2 pha. Mac nh la mot gach au dong, gia tr CUT_FEED se c s dungtrong trng hp nay.e. MACHINE: SPINDLE_SENSE: Chieu quay cua truc chnh:

CW: Cung chieu kim ong ho (mac nh).CCW: Ngc chieu kim ong ho.

SPINDLE_RANGE: Gom cac gia tr: NO_RANGE (mac nh), LOW,

MEDIUM, HIGH, NUMBER.

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Neu thiet lap mot gia tr khac vi NO_RANGE, th khoang bien thien se baogom ca trong dong lenh SPINDL trong tap tin CL. Neu thiet lap la NUMBER, thgia tr thong so RANGE_NUMBER se c s dung trong dong lenh SPINDL.RANGE_NUMBER: c xuat ra trong dong lenh SPINDL neu

SPINDLE_RANGE c thiet lap la NUMBER. MAX_SPINDLE_RPM: Neu thiet lap mot gia tr khac vi dau gach au dong,thuoc tnh MAXRPM se c cong them vao dong lenh SPINDL. SPINDLE_RANGE: Gom cac gia tr: NO_RANGE (mac nh), LOW, MEDIUM,HIGH, NUMBER.

Neu thiet lap 1 gia tr khac vi NO_RANGE, th khoang bien thien se baogom ca trong dong lenh SPINDL trong tap tin CL. Neu thiet lap NUMBER, th giatr thong so RANGG_NUMBER se c s dung trong dong lenh nay. RANGE_NUMBER: c xuat ra trong dong lenh SPINDL neuSPINDLE_RANGE c thiet lap la NUMBER.f. ENTRY/EXIT: CLEAR_DIST: Khoang h tren be mat c gia cong khi chay dao nhanh va batau PLUNGE_FEED va sau o thay oi RETRACT_FEED. Mac nh thong so naykhong c thiet lap. PLULLOUT_DIST: Xac nh chieu cao pha tren v tr cua chuyen ong cat (vdu: lat cat va gia cong), ni ma au dao se lui len tai CUT_FEED va sau o thayoi RETRACT-FEED.

LEAD_IN:Neu thiet lap la YES, th dao cat se i vao phoi tiep tuyen vi mot qu aotron khi gia cong bien dang. Ban knh cung tron c thiet lap bangLEAD_RADIUS, goc cua cung tron bang gia tr ENTRY_ANGLE.

oi vi bien dang kn, neu iem bat au khong c thiet lap, th dungcu cat se cat vao tai 1 v tr c xac nh bi he thong. Neu chung ta khongmuon iem nay, co the xac nh mot truc cha iem bat au khac. Dung cucat se i vao tai mot iem doc theo bien dang ma kn vi truc cha iem batau. LEAD_OUT:

Dung cu cat i ra khoi phoi tiep tuyen vi mot qu ao tron khi gia cong biendang. Lam tng t vi LEAD_IN. neu iem ket thuc c xac nh, no se c sdung cho LEAD_OUT, neu khong th mac nh la goc 900 va iem ket thuc la ongkn bien dang. LEAD_RADIUS: Ban knh cung tron tiep tuyen vi chuyen ong cua dao khi vaohoac ra. Mac nh thong so nay la gia tr 0. TANGENT_LEAD_STEP: Chieu cao cua oan chuyen ong ma tiep tuyen vi

vong tron chuyen ong vao ra.

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NORMAL_LEAD-STEP: Chieu cao cua oan chuyen ong ma vuong goc vivong tron chuyen ong vao ra

Sau khi khai bao xong cac thong so cong nghe ta chon FileSavexuat hien

hop thoai Save Parameters:

Ta go ten cho thong so va cai at va chon OK e lu lai cac thong so o.

4. Tao the tch gia cong:Sau khi khai bao xong cac thong so ta chon Donexuat hien menu DIFINE

VOLchon Create Vol e bat au tao the tch gia cong.

Xuat hien dong nhacEnter name for the milling volumeta nhap ten cho thetch phay ma ta se tao (the tch phay la the tch ma dao se cat bo i)OKxuat

hien menu CREATE VOL vi 2 la chon sau:

-Gather: chon cac be mat e xac nh the tch can phay.

-Sketch: ve the tch phay trong moi trng Sketch.

Gather:

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Chon Gatherxuat hien menu GATHER STEPS vi cac la chon sau:

La chon be mat e gia cong tren may. Tuy chon Select cung cap cho tanhieu cach la chon be mat khac nhau. No bao gom tat ca nhng be mat trong chitiet va chng trnh se t ong lam kn chi tiet bang cach Extrude bien dang cuamat nay theo hng thang ng len mat phang lui dao (hoac mat phang la chon

trc).Neu ban la chon be mat cha phan lom (nh lo, ranh then) ma ban muon

di i, ta dung tuy chon Fill. Ban co the ien ay phan lom bang cach chon chungmot cach oc lap, hay chon bang cach la chon mot mat phang e lam ay tat canhng phan lom ben trong no.

Neu ban muon di mot vai phan lom ra ben ngoai hoac tr i mot vai be mata la chon t the tch gia cong, ta dung tuy chon Exclude.

Neu ban muon cach tot nhat e ong kn chi tiet e mat nh cach mo ta tren,chon tuy chon Close.

Chon Done e chap nhan s la chon.

Xuat hien menu GATHER SEL

Khi ban chon Select trc tien va bat au chon be mat cua chi tiet th xuathien cac la chon sau:

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_ Surf & Bnd: chon mot trong nhng be mat cua chi tiet lam viec va biendang cua be mat, chng trnh se chap nhan be mat c chon va tat ca nhng bemat lan can cung c chon cho ti khi cac ng bien c chon. Ban se chon bemat chuan theo yeu cau sau o ban chon Surf & Bnd lan au tien. Sau o dung cac

la chon sau:

Seed Surface: thay oi mat chuan neu can.

Bndry Srfs: chon bien dang be mat.

Bndry Loops: them ben ngoai canh cua mat lom mot ng bao.

_ Surfaces: chon be mat lam viec tiep theo. Tat ca cac be mat chon se cchap nhan trong chi tiet.

_ Features: chon cac be mat lam viec. Tat ca cac be mat chon se chap nhantrong chi tiet.

_ Mill Surf: chon nhng be mat a c thiet lap Mill Surface.

Sketch:

Mill Volume co the thiet lap bang cach ve phac thao nh ban tao nhng bemat bnh thng (Protruction hay Cut) trong Pro/E. Neu Sketch c chon lan autien t menu CREATE VOL, sketch volume se t ong them vao. Neu mot chi tiethien co trong definition hien hanh, ban se phai lu y neu ban muon Add hayRemove chi tiet ve mat phang phac thao.

+ Chon Sketch t menu CREATE VOL.

+ Neu mot chi tiet hien co trong definition hien hanh, chon Add hay Remove.Add se them mot protruction cho chi tiet hien hanh, Remove se tr i chi tietphac thao t chi tiet hien hanh (nh mot cut). Neu khong co chi tiet thc, mot chitiet protruction se t ong tao.

+ Xuat hien menu SOLID OPTS vi cac la chon sau:Extrude: tao mot be mat theo mot phng thang t mat

phang ve phacRevolve: tao mot the tch bang cach xoay tron mat ve

phac quanh mot ng tam (tao khoi tron xoay).Sweep:tao mot the tch bang cach quet theo mot quy ao

phac thao

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Blend: tao the tch bang cach ket noi cac mat phang lai thanh mot SolidAdvanced: tao cac hnh phc tap.Solid: tao mot khoi acThin: tao mot khoi mong

OFFSET:Khi ta chon Offset sub-menu OPTIONS xuat hien vi cac la chon sau:

Wall: tat ca cac mat ben hong se song songSurface: chon be mat e OffsetTool Radius: Offset khoang cach bang ban knh dung cu cat.Value: Offset khoang cach se c nhap vao. Nhap gia tr

khoang cach

Horizontal: canh mat ay se Offset song song vi mat phangXYTangential: canh cua mat ay se tiep tuyen vi mat phang XY

ROUND:Khi tiep xuc ban co the tao xung quanh tren mot vai canh cua chi tiet. Vi la

chon Round ban co the bo tron the tch can phay. TRIM:

Khi chon Trim, chng trnh se t ong tr reference model t volumedefinition hien hanh, khi bieu dien trong cac hnh sau, khi o ch chi tiet chnh se

c lam viec. ac tnh nay co the dung c hau het sau khi offset tat ca cac bemat e khi gia cong khong b pham vao chi tiet.

5. Mo phong qua trnh gia cong:Trong menu MANUFACTUREMACHININGNC SEQUENCE:

Ta chon vao Play Path e xac lap ng chay dao chnh e hoan thanh chngtrnh NC Sequence.

Khi chon Play Path xuat hien menu PLAY PATH vi cac la chon sau:

Screen Play: xem ng chay dao.NC Check: xem viec mo phong dang ac.Gouge Check: kiem tra v tr dao an vao chi tiet.Khi ta chon Screen Play th xuat hien hop thoai

PLAY PATH, ong thi tren man hnh xuat hien dung cu cat va ng di chuyendao mau o.

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Thiet lap ham BUILD CUT:

Tuy chon Build Cut cho phep ban them vao hoac bt i cac lat cat va xac nhchuyen ong vao va ra cho tng lat cat trong chuyen ong cat.Khi ban chon Build Cut, menu BUILD CUT se xuat hien vi cac tuy chon sau:

By Slice: cac lat cat se c gia cong theo tng o sau Z.By Region: the tch gia cong se t ong tach vun ra thanh

tng vung. Moi vung se c gia cong hoan thanh en o sautrc khi qua vung tiep theo.

Show Slices: hien th cac lat cat bang cacvet mau xam.

_Show All: hien th tat ca cac lat cat._Next: hien th lat tiep theo._Previous: hien th lat cat trc.

Add Slice: cong them lat cat. Xac nh o sau cho mot latcat mi s dung tuy chon Specify Plane va Z Depth. Dung tuychon Update Slices sau khi cong them cac lat cat.

_Specify Plane: xac nh mat phang e nhngha o sau._Z Depth: xac nh o sau theo truc Z cua he truc.

Remove Slice: loai bo cac lat cat. Chon mot lat cat e loai bo bang cachchon vao ng bien dang cua no. S dung Update Slices sau khi loai bo lat cat.

Update Slices: tnh toan lai cac lat cat sau khi cong them vao hoac bo i motlat cat.

Show Regions: hien th vung the tch bang cach bieu dien lat cat ti han cuano.

Order Regions: xac nh th t cua cac vung gia cong dung tuy chon NextRegion va Done Order.

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_Next Regione: chon th t vung gia cong._Done Oder: t choi lenh nay.

Skip Region: chon vung se khong gia cong.Approach: xac nh cac chuyen ong vao cho tng lat

cat.Exit: xac nh cac chuyen ong ra dao cho tng lat cat.Delect: xoa mot Build Cut.Redifine: nh ngha lai mot Build Cut.Play Cut: hien th chuyen ong cat c nh ngha hien hanh.BldCut Info: hien th menu INFORMATION WINDOW (buildcut.inf).

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II. GIA CONG V TR (LOCAL MILL)

Gia cong v tr la phng phap gia cong tai tng v tr cu the. Co bon cach giacong v tr khac nhau:

Prev NC Seq: dang gia cong nay dung e cat bo vat lieu con lai sau cacphng phap gia cong khac nh Volume, Profile hoac gia cong v tr khac vathng gia cong vi dung cu cat nho hn.

Corner Edges: xac nh mot hoac nhieu goc e lam sach vat lieu bangcach chon cac canh.

By Prev Tool: tnh toan lng vat lieu con d lai tren be mat xac nh saukhi a gia cong phng phap trc bang dung cu cat ln hn, sau o cat bo lngvat lieu d nay bang dung cu cat nho hn.

Pencil Tracing: lam sach canh cua be mat bang cach tao mot ngchuyen ong dao doc theo cac goc.

Gia cong v tr luon thch hp s dung kieu xoan oc, v the cac thong soROUGH_OPTION va SCAN_TYPE th khong thch hp vi dung nay.Neu CUT_TYPE c chon dang UPCUT hoac CLIMB th gia cong se c

thc hien theo mot hng (one-direction). Neu CUT_TYPE la NONE (gia tr naych thch hp cho gia cong v tr), dung cat se cat bo vat lieu bang cach di chuyen iti i lui, c minh hoa nh hnh sau ay:

1_UPCUT 2_CLIMB 3_NONE

1. Gia cong v tr bang Referencing a Previous NC Sequence:Dang gia cong v tr nay dung e cat bo vat lieu con sot lai sau gia cong the

tch, gia cong tinh hay gia cong v tr khac, va gia cong vi dung cu cat nho hndung cu cat cua phng phap trc. Khi ban tao mot gia cong v tr, he thong se

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nhac ban chon mot Reference NC Sequence. He thong se tnh toan lng vat lieucon lai va gia cong lng vat lieu nay.

1_gia cong the tch vi 1 dao ln.

2_gia cong v tr cat bo vat lieu con lai. e tao mot gia cong v tr bang Referencing a Previous

NC Sequence:

Tren menu Machining, chon NCSequenceNew Sequence. Ban

phai chon mayla Mill hoacMill/Turn.

Chon Local Mill va chonDone. Tren menu LOCAL

OPT, ta chon Prev NCSeqva chon Done sauo.

Xuat hien menu

SELECT FEAT, chonNC Sequence click vao phng phapgia cong trc o (v du:volume milling) xuathien menu SEL MENUclick vao CUT MTN#1 xuat hienmenu SEQ SETUP.

Ngoai cac tuy chon chung, ta co the cong them vao cac tuychon co the s dung cho cac dang khac nhau. Tren menu

SEQ SETUP gom co cac tuy chon ac biet sau: Name: ten cua chng trnh NC Sequence.

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Comments: chu thch cho chng trnh NC Sequence cliet ke trong Manufacturing Info. Tool: thay oi hoac thiet lap dung cu cat. Parameters: thiet lap hoac thay oi thong so gia cong. Coord Csys: he truc toa o ac biet cua NC Sequence. Retract: mat phang lui dao. Ch xuat hien trong gia cong

phay va lam lo ren. Ref Sequence: la chon mot Reference NC Sequence la

phng phap gia cong sau o. Ban co the chon gia cong the tch,gia cong tinh hay mot gia cong v tr khac. Build Cut: thiet lap ham Build Cut. Start: chon iem bat au cho ng chay dao cua chng

trnh NC. End: chon iem cuoi cho ng chay dao cua chng trnh NC. Done: chap nhan cac la chon trong menu Seq Setup. Quit: khong chap nhan cac la chon.Chon vao Tool, Parameters -->chon Done.

Tien hanh thiet lap dao cat va cac thong so gia cong tng t nh gia cong thetch. Tren menu NC SEQUENCE, chon Play Path e mo phong ng chay dao

cat cua he thong. Neu khong hoan thanh, ban co the hieu chnh lai cac thong

so hoac s dung chc nang Customize e ieu chnh ng chay dao. Chon Done Seqhoac Next Seqe hoan thanh.

2. Gia cong v tr s dung Corner Edges:Trong cach gia cong v tr nay, ban xac nh mot hoac nhieu goc e lam sach bangcach chon canh. Lng vat lieu con lai se c tnh toan bi he thong da tren c s

gia tr cua thong so CORNER_OFFSET, hoac ban knh dung cu cat trc o.

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1_Chon goc2_Ban knh dao trc (CORNER_OFFSET)3_Vat lieu se c cat bo

e tao mot gia cong v tr bangReferencing a Previous NC Sequence:

Tren menu Machining, chon NC Sequence NewSequence. Ban phai chon may la Mill hoac Mill/Turn.

Chon Local Mill va chon Done. Tren menu LOCAL OPT, ta chon Corner Edges va

chon Done sau oxuat hien menu SEQ SETUP. Ngoai cac tuy chon chung, ta co the cong them vao cac

tuy chon co the s dung cho cac dang khac nhau. Trenmenu SEQ SETUP gom co cac tuy chon ac biet sau: Name: ten cua chng trnh NC Sequence.

Comments: chu thch cho chng trnh NC Sequencec liet ke trong Manufacturing Info. Tool: thay oi hoac thiet lap dung cu cat. Parameters: thiet lap hoac thay oi thong so gia cong. Coord Csys: he truc toa o ac biet cua NC Sequence. Retract: mat phang lui dao. Ch xuat hien trong gia

cong phay va lam lo ren. Surfaces: la chon mat phang e gia cong bang phng

phap nay.

Corner Edges: xac nh goc e lam sach. Build Cut: thiet lap ham Build Cut. Start: chon iem bat au cho ng chay dao cua

chng trnh NC. End: chon iem cuoi cho ng chay dao cua chng

trnh NC. Done: chap nhan cac la chon trong menu Seq Setup.

Quit: khong chap nhan cac la chon.

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Chon Donethiet lap dao OK

Xuat hien menu MFGPARAMSchon Set

e thiet lap thong soCORNER_OFFSET.

Lu cac thong so va thiet lap lai: File/Savenhap ten.Chon Done e ket thuc qua trnh thiet lap.

Xuat hien menu SELECT SRFS vi cac la chon sau:

Add: them mat phang e xac nh gocgia cong. Remove: t choi goc a nh ngha.

_Remove single: cho phep ban tng bc xac nh cac goc

s dung tuy chon Next hoac Previous. Bo la chon mot gocbang tuy chon Accept._Remove All: bo tat ca cac goc a la chon trc o.

Show: hien th tat ca cac canh cua goc a nh ngha ang hienhanh.

Chon Done/Returnxuat hien menu CRNR REGIONSvi cac la chon sau:

Suggest: co the xem cac goc tren be mat la chon bctrc. Tuy chon nay ch xac nh thong tin: cac goc c gia cong

phai nh ngha chnh xac bang cach chon tuy chon Define pha

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di. Define: nh ngha goc bang cach chon be mat cha goc vi

tuy chon Surfaces hoac co the nh ngha bang cach chon canhcua chnh goc o vi tuy chon Edges. Tren menu NC SEQUENCE, chon Play Path e mo

phong ng chay dao cat cua he thong. Neu khong hoanthanh, ban co the hieu chnh lai cac thong so hoac s dungchc nang Customize e ieu chnh ng chay dao.

Chon Done Seqhoac Next Seqe hoan thanh.

3. Gia cong v tr bang Referencing a Previous Tool:Dang gia cong v tr nay, he thong se tnh toan vat lieu con d lai tren be mat

xac nh sau khi gia cong vi mot con dao ln hn, sau o tien hanh cat bo lngd con lai o vi mot con dao nho hn. Dung cu trc o phai la dao au tron.Ban co the la chon be mat e xac nh e gia cong hoac s dung mot MillWindow e chon mat gia cong.

e tien hanh mot gia cong v tr bang Referencing a Previous Tool ta thchien theo trnh t sau:

Tren menu Machining, chon NC Sequence NewSequence. Ban phai chon may la Mill hoac Mill/Turn. Chon Local Mill va chon Done. Tren menu LOCAL OPT, ta chon Corner Edges va chon

Done sau oxuat hien menu SEQ SETUP. Ngoai cac tuy chon chung, ta co the cong them vao cac tuy

chon co the s dung cho cac dang khac nhau. Tren menuSEQ SETUP gom co cac tuy chon ac biet sau: Name: ten cua chng trnh NC Sequence. Comments: chu thch cho chng trnh NC Sequence

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c liet ke trong Manufacturing Info. Prev Tool: xac nh dung cu cat trc (ln hn) se c s dung e tnh

toan lng d vat lieu con lai. Giao dien xac nh cho dao trc cung tng t nhgiao dien cua dao hien hanh.

Chu y: neu ban thc hien gia cong v tr bang dung cu cat trcngay sau khi gia cong vi mot dung cu cat ln hn, dung cu cattrc o se c la chon bi he thong; s dung tuy chon Tooltren menu SEQ SETUP e xac nh 1 dung cu cat hien hanh nhohn.

Tool: thay oi hoac thiet lap dung cu cat. Parameters: thiet lap hoac thay oi thong so gia cong. Coord Csys: he truc toa o ac biet cua NC Sequence. Retract: mat phang lui dao. Ch xuat hien trong gia cong

phay va lam lo ren. Surfaces: la chon mat phang e gia cong bang phng

phap nay. Window: tao hoac chon ca so gia cong. Tuy chon nay va

Surfaces loai tr lan nhau. Neu ban chon tuy chon Window, tat cacac be mat nam ben trong ca so gia cong se c chon.

Check Surfs: chon be mat kiem tra Machining Area: xem vung gia cong. Khi ban chon tuy chon nay, menu

MACHINE SRFS m ra. Chon Preview e xem vung gia cong. Build Cut: thiet lap ham Build Cut. Start: chon iem bat au cho ng chay dao cua chng trnh NC. End: chon iem cuoi cho ng chay dao cua chng trnh NC. Done: chap nhan cac la chon trong menu Seq Setup. Quit: khong chap nhan cac la

Chon Done e chap nhan cac tuy chon Ta tien hanh thiet lap dao va cac thong so trong nghe trong hop thoai

Tools Setup va MFG PARAMSchon Done e ket thuc. Xuat hien menu NCSEQ SURFS va SURF PICK vi cac tuy chon sau:

_From Prev Seq: chon cac mat t phng phap gia congtrc.

_Select Srfs: chon mat gia cong._Model: chon cac mat t mo hnh._Mill Volume: chon cac mat t 1 mill

volume.

_Mill Surface: chon cac mat t 1 millsurface.

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Chon Done xuat hien menu SELECT SRFS pick vao be mat can chonChon Done/Return 2 lan lien tiep.

Tren menu NC SEQUENCE, chon Play Path e mo phong ng chay daocat cua he thong. Neu khong hoan thanh, ban co the hieu chnh lai cac thong

so hoac s dung chc nang Customize e ieu chnh ng chay dao. Chon Done Seqhoac Next Seqe hoan thanh.

4. Gia cong v tr bang Pencil Tracing:Trong dang gia cong nay, he thong lam sach canh cua be mat la chon bang cachtao mot ng chay dao doc theo canh cua cac goc. Ch cho phep vi dao au tron.Thong so SLOPE_ANGLE cho phep ban phan chia khu vc theo phng ng vangang (Slope_angle mac nh la 30).

e tien hanh mot gia cong v tr bang Pencil Tracing ta lam nh sau: Tren menu Machining, chon NC Sequence New

Sequence. Ban phai chon may laMill hoac Mill/Turn.

Chon Local Mill va chon Done. Tren menu LOCAL OPT, ta chon

Pencil Tracing va chon Done sauo xuat hien menu SEQ

SETUP. Ngoai cac tuy chon chung, ta cothe cong them vao cac tuy chon cothe s dung cho cac dang khacnhau. Tren menu SEQ SETUPgom co cac tuy chon ac biet sau: Name: ten cua chng trnh NC Sequence. Comments: chu thch cho chng trnh NC Sequence c liet ke trong

Manufacturing Info. Tool: thay oi hoac thiet lap dung cu cat.

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Parameters: thiet lap hoac thay oi thong so gia cong. Coord Csys: he truc toa o ac biet cua NC Sequence. Retract: mat phang lui dao. Ch xuat hien trong gia cong phay va lam lo

ren. Surfaces: la chon mat phang e gia cong bang phng phap nay. Window: tao hoac chon ca so gia cong. Tuy chon nay va Surfaces loai tr

lan nhau. Neu ban chon tuy chon Window, tat ca cac be mat nam ben trong ca sogia cong se c chon.

Check Surfs: chon be mat kiem tra Build Cut: thiet lap ham Build Cut. Start: chon iem bat au cho ng chay dao cua chng trnh NC. End: chon iem cuoi cho ng chay dao cua chng trnh NC.

Done: chap nhan cac la chon trong menu Seq Setup. Quit: khong chap nhan cac laChon Done e chap nhan cac tuy chon tren. Sau o ta tien hanh thiet lap dao (ch cho phep dao au tron) va cac thong

so cong nghe nh tren chon Done e ket thuc. Xuat hien menu NCSEQ SURFS va SURF PICK vi cac tuy chon sau:

_From Prev Seq: chon cac mat t phng phap gia congtrc.

_Select Srfs: chon mat gia cong._Model: chon cac mat t mo hnh._Mill Volume: chon cac mat t 1 mill volume._Mill Surface: chon cac mat t 1 mill surface. Chon Done xuat hien menu

SELECT SRFS pick vao be matcan chon

Chon Done/Return 2 lan lien tiep. Tren menu NC SEQUENCE, chon Play Path e mo

phong ng chay dao cat cua he thong. Neu khong hoan thanh, ban co thehieu chnh lai cac thong so hoac s dung chc nang Customize e ieu chnhng chay dao.

Chon Done Seqhoac Next Seqe hoan thanh.

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III. GIA CONG MAT:S dung gia cong mat e gia cong nhng be mat nam ngang hoac nghieng.

Be mat la chon phai cho phep ng chuyen ong dao lien tuc. Co nhieu cach enh ngha chuyen ong cat va gia cong bao hnh:

Straight Cut: be mat phay c chon bang mot chuoi cac ng cat thang.oi vi may gia cong 3 truc, ban co the cat bo vat lieu vi s gia tang cua o sau. From Surface Isolines: be mat phay c chon la hng u-v cua mattrc o. Cut Line: be mat phay c chon bang cach nh ngha hnh dang au

tien, cuoi cung va cac ng cat trung gian. Khi he thong gia cong theo ngchuyen ong cat, no tng bc thay oi hnh dang ng cat theo nh hnh dang vakch thc be mat.

Projected Cuts: be mat gia cong c chon la nhng ng vien nho racua chung tren mat phang lui dao, tao mot ng chuyen ong cat phang tren bemat nay (s dung SCAN_TYPE phu hp), va sau o thiet ke ng chuyen ongnay tr lai tren mat phang goc. Cach nay ch co the dung vi may gia cong 3 truc.

Tuy thuoc vao cach thc la chon, ban phai nh ngha ngcat bang cachxac nh cac thong so va hnh hoc phu hp.

Khi ban nh ngha lai mot gia cong be mat, ban co the thay oi Cut Type(o la, la chon cach nh ngha ng cat khac va xac nh cac thong so va maumi) va a ra mot ng chuyen ong cat khac.

Cac thong so gia cong chnh co the co gia tr khac nhau oi vi cac Cut Typekhac nhau. Neu ban thay oi Cut type va gia tr thong so ma ban xac nh trc thkhong the s dung cho Cut type mi, he thong se thiet lap thong so nay bang motga tr mac nh cho Cut type mi. Tuy nhien, neu gia tr cua mot thong so co the sdung cho ca Cut type cu va mi th he thong khong thay oi no. V du, neu bannh ngha lai t Cut line thanh Straight Cut va gia tr SCAN_TYPE laTYPE_SPIRAL, he thong se thay oi thanh TYPE_1 bi v TYPE_SPIRALkhong the s dung cho Straight Cut. Tuy nhien, neu gia tr SCAN_TYPE laTYPE_ONE_DIR he thong van s dung gia tr nay.

e tao mot gia cong mat:Khi ban tao mot gia cong mat ban phai chon mot trong so cac cach nh

ngha ng cat. Phu thuoc vao cach la chon, ng chuyen ong dao se khacnhau. Ban co the thay oi Cut type vao luc ban nh ngha lai mat gia cong.

B1: Tren menu MACHINING, click vao NC Sequence. Ban phai chon mayla may Mill hoac Mill/Turn.

B2: Chon Surface Mill. Sau o ta click vao Done.Xuat hien menu SEQ SETUP vi cac tuy chon sau:

_Surface: chon be mat gia cong. Neu ban ang chon cac mat em, xac nhthanh cua cac be mat ban muon gia cong.

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_Window: tao hoac chon mot ca sogia cong. Ch xuat hien vi may gia cong 3truc. Tuy chon nay va Surface loai tr lannhau. Neu ban s dung tuy chon Window,

tat ca cac be mat nam ben trong ca so giacong eu c chon.

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