two point coiling
Post on 02-Jun-2018
244 Views
Preview:
TRANSCRIPT
-
8/11/2019 Two Point Coiling
1/36
-
8/11/2019 Two Point Coiling
2/36
Nothing in making springs is set
in stone.
Nothing I can think of has an
unbreakable rule that it MUST be
done a certain way.
-
8/11/2019 Two Point Coiling
3/36
BASIC TERMS
-
8/11/2019 Two Point Coiling
4/36
Tool Function
! Cutter movable part of
cutting system
! Arbor fixed part of cutting
system! Upper coiling point
controls OD and initial
tension
! Lower coiling point centers
OD over the arbor
! Wire guide holds the wire
for the coiling process
-
8/11/2019 Two Point Coiling
5/36
All tooling is the right size
Installed correctly on the machine.
-
8/11/2019 Two Point Coiling
6/36
Wire into the machine and up to the coiling points.
-
8/11/2019 Two Point Coiling
7/36
! Set the cutter to straight cut
! Adjust to arbor and cutter to cut the part off.
-
8/11/2019 Two Point Coiling
8/36
Confirm coiling point setup
Spring center
Contact the wire in the
center line of coiling
point.
-
8/11/2019 Two Point Coiling
9/36
Coiling point adjustments
Lower coiling point
should be in line with
wire.
-
8/11/2019 Two Point Coiling
10/36
Loosen both screws of the
coiling point holders, then
feed some wire to let thecoiling points rotate to the
wire.
-
8/11/2019 Two Point Coiling
11/36
Get the spring to coil
Use the cutter and arbor to cut the part off
If you are using the rotating cut cutter and arbor, do not worry
about the burr at this time
-
8/11/2019 Two Point Coiling
12/36
! Get the part to coil and get the correct dia. ( just a little smaller than you really want )
! Correct initial tension for the spring you are making.
! You may have to remove the arbor, and or coiling points and do some modifications
to them in order to get all of this setup properly. ( This is normal! )
! Adjust in/out of the coiling point to get the desired initial tension.
Adjust the two coilingpointsin andout to get the desired initial tension.
Measure the outside diameter of
the spring.
-
8/11/2019 Two Point Coiling
13/36
At this point you should be able to coil the spring without it
catching any place on the machine
The diameter should be correct
You should have the amount of tension that you want. If youdo not have ALL of these things do NOT go any further!
Check the initialtension on the coiled spring. If this amount isnot proper for the spring, please try to adjust the coiling points
by above step.
-
8/11/2019 Two Point Coiling
14/36
Computer part Press the Q button to set the minimum OD.
Measure the part that you have coming off of the machine.
Enter OD reading in millimeters into the minimum OD section.
-
8/11/2019 Two Point Coiling
15/36
Enter the wire diameter in millimeters.
-
8/11/2019 Two Point Coiling
16/36
Go to the OD origin section input the correct ODfor your spring
-
8/11/2019 Two Point Coiling
17/36
Coil approx.3/4 of a coil
Bring the pitch tool up ( very close but not touching )
Record value in pitch tool section of the screen
-
8/11/2019 Two Point Coiling
18/36
A basic compression spring has
five basic parts.
Dead coil ( closed coil ) Transition from dead coil to body
Body
Second transition Last dead coil
-
8/11/2019 Two Point Coiling
19/36
Dead coil ( closed coil )
Transition from dead coil to body
Body
Second transition
Last dead coil
The 5 parts of a compression spring
-
8/11/2019 Two Point Coiling
20/36
Setup program with these five sections
The dead coil should be approx. !coil
Transition should be approx. "coil
Body is approx. the active coil count
Second transition is also approx. "coil
Last dead coil is approx. !also
-
8/11/2019 Two Point Coiling
21/36
a. the dead coil should be approx. !coilb. transition should be approx. "coil
c. body is approx. the active coil count
d. second transition is also approx. "coil
e. last dead coil is approx. !also
-
8/11/2019 Two Point Coiling
22/36
Check to see if the part is square
( both ends )
-
8/11/2019 Two Point Coiling
23/36
Work on the front end first
Adjust feed in the N command firstend
Going up, then add wire
Going down, subtract wire Keep this within + - .25 coils of the .75coils you started with
The ends not being square is not a
product of the machine speed, it hasto do with the amount of wire in thetransition. ( pitch to feed ratio )
-
8/11/2019 Two Point Coiling
24/36
Transition is kicked up
-
8/11/2019 Two Point Coiling
25/36
Transition laid down
-
8/11/2019 Two Point Coiling
26/36
If you can NOT get the end square, do the following.
Pitch tool origin is 8.00 and you have a pitch movement from
the trail of 14.00.
Insert pitch value of 11.00 ( center of 8.00 and 14.00 )
Press INS key to create a new step between step2 and step3. The original step3 will move down tostep4.
-
8/11/2019 Two Point Coiling
27/36
MOVE N .38 PT 11.00
MOVE N .38 PT 14.00
!of the .75 value is .38 PT 10.0 = 14.0 ( body pitch ) + 8.0 ( origin ) / 2
11.0 is in the middle of these two values.
-
8/11/2019 Two Point Coiling
28/36
-
8/11/2019 Two Point Coiling
29/36
Adjust the feed on both steps
Adjust the pitch value on 003.
DO NOT ADJUST THE PITCH ON 004 TO ADJUST THE
SQUARNESS ( PITCH FOR THE BODY )
-
8/11/2019 Two Point Coiling
30/36
Do the same for the squareness of the last end. ( 2nd transition )
Difference is you will send the PT back to the PT origin.
-
8/11/2019 Two Point Coiling
31/36
Both ends square
The machine should be running at rate
All the tooling should be set Arbor should be in the proper location etc.
Correct number of coils ( proper number of
coils + - 1/4 of a coil )
At this point you should have the following
-
8/11/2019 Two Point Coiling
32/36
setup the cutting system
Fig-AFig-BFig-C
-
8/11/2019 Two Point Coiling
33/36
Measure the end coils to the body
Input the OD command in the program
The OD command will go in the TRANSITIONsection, not the body feed!
Add OD command to the step3when it starts to coil the spring with pitch.Add OD command to the step3when it starts to coil the spring with pitch.
-
8/11/2019 Two Point Coiling
34/36
Required OD of 25mm, ( the OD origin is
25.0mm )
Body measures 24.5mm
OD command of approx. 25.5mm
Back end of spring ( the last transition )
OD back to the origin.( back to 25.0mm )
If you have two sections, you will need
two OD commands!
-
8/11/2019 Two Point Coiling
35/36
If you have two sections for the transition like
below, then you will need two OD commands.
The OD command will go on the same line as thepitch.
Add OD command to the step3when it starts to coil the spring with pitch.
-
8/11/2019 Two Point Coiling
36/36
Final Adjustments
Check numbers of coils
Check free length
Check OD of spring Check running speed
Check that all adjustment bolts are tight
Set counter Start production
top related