Bar puller programming

[FUN4ME]

Hi guys,
I have a SL10 lathe and we just got a bar puller for it.
I do not want to clamp the 5c collet with nothing in it so,
How do you program for a certain number of pulls on a bar?
For example if I know I can get 10 pieces out of a 12” inch bar how would I program that?
I understand all the moves involved in pulling a bar, it is just the number of pulls that concern me.
Could someone please give an example of how you program it to only make 10 pulls?
Thanks Erich

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[Geof]

Make the program a subroutine then call it with and L count.

[FUN4ME]

Geof thanks for the reply that is what I was thinking.

OK after asking the question I started searching on line here is what I came up with.
I now realize how much typing is involved so this an accurate program example?
The program is for a bar puller that engages in the z axis the one we got engages from the x axis
So I would be changing the program to accommodate that.
http://www.cncci.com/resources/tips/bar%20puller.htm
Thanks for your help
Erich

[Geof]

That program seems to be teaching you how to write a macro which is a bit more complicated than the way we do it; we just have a dedicated little section at the top of the program, kinda like this in words, not G-code.


Program Name
Safety Line
Move bar puller into position
Grip bar
Open Chuck
Pul bar
Close Chuck
Release bar
Move away for tool change
Call subroutine for with L count (M97 Pnnnn Lsomething)
G28
M30
------
Nnnnn
Part program
;
;
M99

[locash]

I just use the tool usage alarm to stop the machine after a certain number of tool uses, works ok for me..

That being said, here is a snippet of code that I use with my royal bar puller in my SL10..

(BAR PULLER)
T1212
G54
G98
M05
G00 Z-7.2868
X-9.
G01 X-10.5 F20.
G04 P0.75
M11
G04 P0.75
Z-5.9268 F50.
G04 P0.75
M10
G04 P0.75
G01 X-9. F20.
G00
Z0.1
G28
/ M99
M30

If I only want to run one part, I use the block delete key to ingore the m99..

[FUN4ME]

I just use the tool usage alarm to stop the machine after a certain number of tool uses, works ok for me..

Thinking outside the box.
Nice

[RBrandes]

Program an M55 at the start of your SUB program.
Go to Settings, Part Count-Cycle times.
Set the total number of parts to the yield of your bar stock.
Set the number of parts to zero.
The machine will stop displaying an error something like "Programmed number of parts has been reached."
Regards, Ray