Topics

1

General Mach Discussion / peck clearance height

« on: March 15, 2016, 09:48:34 PM »

i've never noticed before but tonight when i wrote a basic g83 program (g83 x 3 y 4 r.05 z-.575 q.05 f3) it rapids to .05, does a peck and retracts to .05 then up to .25
it is leaving about 1/4 inch before it starts redrilling after each peck. it cuts more air than material.  g98, g99, g73, g73 pullback...nothing matters

any help on this?

Steve K

2

General Mach Discussion / Lathe Spindle Speed Control

« on: August 30, 2012, 10:14:03 AM »

Hi,
I'm new to this forum.
I'm in Yahoo and have used MACH for years now.
I'm fixing up a Hardinge lathe fo CNC.
I have changed many machines but on this one I want variable speed with the work diameter.
I how know the PWM  works but it's not as straight forward as that.
The Hardinge has a variable "V" belt spindle drive like a Bridgeport mill.
There is a 575 VAC 3 phase motor driving the screw that changes the position of the variable pulleys.
I can change the 3 PH motor to a DC motor with gears, belt, whatever
Is there a way to compare RPM with the adjusting screw location?
I've been looking and I have found nothing about a variable speed spindle compared to work piece diameter.
Any help would be appreciated.

3

General Mach Discussion / Servo Serial Link Feedback

« on: April 02, 2008, 08:09:00 PM »

If this is enabled does it make mach3 work the motors directly with the encoder inputs?
How do I enable this?