Lathe Canned Cycle (G72), move finish feedrate.

[JVizzi]

Hello,

 

I'm not sure if this is a Post question, or if I am missing something among the operation options within MC.

 

When I setup a canned turning cycle, one rough operation, one finish operation, and I have "force tool change" UNCHECKED, I get the finish feedrate from the finish operation output inside the programmed toolpath, rather than on the G70 line where it ought to be:

 

(ROUGH FACE)
T101(CNMG 431 TURNING TOOL)
G54
G97 S3000 M03
M08
G00 X.55 Z.125
G50 S3000
G96 S500
G72 P100 Q102 U0. W.005 D.0625 F.005
N100 G00 Z0.
G01 X-.06 F.003 <---
N102 Z.125
G00 X.55
(FINISH FACE)
G70 P100 Q102
G00 X.55

 

This is a problem, at least for my HAAS lathe, because during the rough cycle, it overrides the rough feedrate that I set in the G72 line (F.005) and runs at the finish feedrate even while its roughing. It also does this even if I have "Force tool change" selected on all operations.

 

I would line the finish feedrate to post out on the G70 finish cycle line.

 

G70 P100 Q102 F.003

 

And I am hoping this is not a post issue as the coding for canned cycles inside the post looks quite complicated.

 

Thanks!

 

 

[Machineguy]

What ver of MC?

How is your tool page set up?

What Lathe type of Haas?

 

I'll set up a part to see what I get.

[Colin Gilchrist]

There is a whole mechanism for controlling the canned cycle output.

 

Look for 'SLCC'.

 

This is a string of 0 and 1 digits that controls canned cycle formatting.

[Machineguy]

According to the Hass Manual it is correct. I get the same thing.

[JVizzi]

This is MX7. On a HAAS ST-10 Lathe.

 

Colin,

 

I messed around with those settings a bit, but they seem to only affect where the cutter comp is placed in/out of the canned cycle

[JVizzi]

According to the Hass Manual it is correct. I get the same thing.

 

You are right! my mistake. I just went out to the lathe and tested it out, it does work correctly.

[Machineguy]

GLAD I COULD HELP