Messages

1

General Mach Discussion / Re: Lathe speed control

« on: January 14, 2008, 11:02:06 AM »

I have the speed sensor, (needed it for threading to work).
I hadn't though of using a hardware comparitor with the PWM, that might work out simpler to deal with than trying to program Mach to do it
Simpler to debug since I know a lot more about electronics than programing Mach!.

Thanks Chris

2

General Mach Discussion / Lathe speed control

« on: January 13, 2008, 05:05:26 PM »

I have a viceroy lathe that I have converted for Mach and it works very well but spindle speed is still manual.

The speed control is by a variable speed pully that is driven by a motor with an up and down button that changes the ivariable pully drive.

The question is if I put 2 relays driven by 2 output port bits across the up/down button is there a way to get mach to adjust the speed
to the speed given in the S command and monitor the spindle feed back to make it match the required speed ?

Thanks