cad cam cnc lesson1

7/30/2019 Cad Cam Cnc Lesson1

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1

S tit tng:60tit (14tun,1tun:4tit). S tit l thuyt:45tit (12tun)

S tit thc hnh:15tit (3 tun).

S tit bi tp ln:15tit

Mn hc trc:khng c

Mn hc songhnh:khng c.

Mc tiu mn hc:cung cp cho sinh vin kin thc,phngphp lun v CAD/CAMm hnh ha hnh hc, ha my tnh,thit knh my tnh v cc ng dng,cng ngh,lp trnh,v

my cng c CNC,h thng sn sut linh hot (FMS),v h thngsn xut tch hp nh my tnh (CIM).

Hnh thc kim tra:50%kim tra,50%thi cui k.

2

1. on Th MinhTrinh:Cng ngh CAD/CAM.NXBKhoa Hc K Thut,1998

2.L Trung Thc:CAD/CAM Thit kv snxut nh my tnh,2000

3. on Th MinhTrinh,Nguyn Ngc Tm:Cng ngh Lp trnh gia cng iu khin s,NXBKhoa Hc K Thut,2002.

4.PNRao:CAD/CAMPrinciplesandApplications.McGrawHill,2002.


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1. Hiu bit v Cng ngh chto my,bit chn dngc ct v xc nh ch gia cng

2. Bit s dng my tnh

3. Hiu bit v v k thut

4. Phi tm hiu t nht mt phn mm CAD/CAM(V d:

Pro/ENGINEER,Cimatron,SolidWorksSolidCAM,

Mastercam,)

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Bi

1 M u v CAD/CAM

2 Phn cng v CAD/CAM

3 ha my tnh

4 M hnh ha hnh hc

5 H thng CAD6 M u v CNC

7 Cng ngh v lp trnh phay CNC

8 Cng ngh v lp trnh tin CNC

9 Vai tr ca cc h thng thng tin

10 FMSv CIM


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CAD/CAM/CNC

By Ton, Thien-Phuong

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nh ngha CAD/CAM/CNC

Lch s CAD/CAM/CNC

Chuk sn phm

Cng c CADh tr trong qu trnh thit k

Cng c CAD/CAMh tr trong qu trnh thit kv chto.


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NHNGHACAD/CAM/CNC

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CAD =ComputerAidedDesign

CAM=ComputerAidedManufacturing

CNC=ComputerNumericalControl

y l k thut cp n vic s dng computer thc hin vic thit kv chto.


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CAD c xc nh nh l vic s dng h thng mytnh thc hin nhng chc nng trong qu trnh thitk.

CAM l s dng h thng my tnh lp k hoch,qun l, iu khin nhng hot ng ca qu trnh snxut thng qua c giao tip trc tip hay gin tip vimy tnh vi nhng ngun khc.

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Computer ProcessProcess data

Control signals

Computer ProcessProcess data


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LCHS CAD/CAM/CNC

12

1

N C

1960950 1970 1980 1990

C N C

F MSS

C A D

C A D / C A M

C I M


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Kho at o chnh xac gia cong chu yeu do sai so cua mau dungcho qua trnh chep hnh c phong ai.

De lam sai do nham lan hay hieu sai.

Nang suat thap do mau c thiet ke theo phng phap thucong va qui trnh c thc hien tuan t (Tao mau san pham Lap ban ve chi tiet tao mau chep hnh Gia cong chep

hnh).


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(CAM)

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Thiet ke cac san pham co hnh dang phc tap trong khong gian3D.

Lien ket vi cac Moun khac e thc hien qua trnh tnh toanphan tch ky thuat, mo phong gia cong th e kp thi sa chatrc khi tien hanh qua trnh san xuat.

Bien dch cac ng chay dao chnh xac dung cho cong nghegia cong tren cac may CNC va truyen chng trnh gia cong

qua cac may gia cong CNC.


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The Manufacturing Process

The Design Process

Synthesis

Analysis The CAD Process

The CAM Process

Designneeds

Design definitions,specifications, and

requirements

Collectingrelevant designinformation andfeasibility study

Designconceptualization

Designmodeling and

simulation

Designanalysis

Designoptimization

Designevaluation

Designdocumentation and

communication

Processplanning

Ordermaterials

Design andprocurement

of new tools

Productionplanning

NC, CNC, DNCprogramming

Production Qualitycontrol Packaging

Marketing

Shipping

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Design phase Required CAD tools

Design conceptualization Geometric modeling techniques;

Graphics aids; manipulations; and

visualization

Design modeling and simulation Same as above; animation; assemblies;

special modeling packages.

Design analysis Analysis packages; customizedprograms and packages.

Design optimization Customized applications; structural

optimization.

Design evaluation Dimensioning; tolerances; BOM; NC.

Design communication and

documentation

Drafting and detailing


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Delineation ofgeometric model

Definitiontranslator

Geometric model

Design andAnalysis algorithms

Drafting anddetailing

Documentation

To CAM Process

Interfacealgorithms

Design changes

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Manufacturing phase Required CAM tools

Process planning CAPP techniques; cost

analysis; material and

tooling specification.

Part programming NC programming

Inspection CAQ; and Inspection

software

Assembly Robotics simulation and

programming


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Geometric model

Interfacealgorithms

Process planning

Inspection

Assembly

Packaging

To shipping and marketing

NC programs

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Computergraphicsconcepts

Design tools

Geometricmodeling

CADtools


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Mfg tools

Networking

Design tools

Geometricmodeling

Computergraphicsconcepts

CAD/CAMtools

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Geometric modelingof conceptual design

Is design evaluationPossible with

availableStandard software?

Design testingAnd evaluation

Is final designApplicable?

Drafting

Documentation

Processplanning

Are theremanufacturingdiscrepancies inCAD databases?

NCprogramming

Machining

Inspection

Assembly

Developcustomized

programs andpackages

No

Yes

Yes

Yes

Geometric modeling and graphics package

Designpackage

Programmingpackage

No

No

CAPP package

NCpackage

InspectionAnd Robotics

package


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CAD

CAM

CNC

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Greater flexibility.

Reduced lead times.

Reduced inventories.

Increased Productivity.

Improved customer service.

Improved quality.

Improved communications withsuppliers.

Better product design.

Greater manufacturingcontrol.

Supported integration.

Reduced costs.

Increased utilization.

Reduction of machine tools.

Less floor space.


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cad cam cnc lesson1

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