Spindle RPM Cap

This is a general G96 D, S question. We have remote push buttons for feed hold and spindle stop on our lathes. In G96 mode the machine starts up and operates just fine applying the G96 Code. We have found that if we hit Feed Hold stop the spindle and re-start the spindle it seems to ramp up the the capped spindle speed and not the rpm it was cutting at when feed hold was applied.

Any Ideas?

Looks like we lose the constant surface speed but it reads the value of the S portion of the G96 line in the code.

EX G96 D1000 S600

Hit feedhold, spindle stop, spindle restart and cycle start spindle and program resume but at 600 RPM for the rest of the program

Sounds like stopping the spindle is a queue buster for CSS.

JT

I don't suppose there are any ways to work around this that anybody knows of?

You might back up to the start of the cut and run from line if it is not in a subroutine.

JT

We can do that but in long or large roughing cycles it is a time waster, watching air cuts drives me nuts as a business owner. There are times when the insert may need changed in the middle of a roughing cycle.