Messages

1

General Mach Discussion / Re: Motor Tuning entries for a Sunwin Rotary 4th Axis

« on: December 23, 2019, 09:48:04 AM »

Rich,
Thank you, thank you, thank you.
DJ

2

General Mach Discussion / Motor Tuning entries for a Sunwin Rotary 4th Axis

« on: December 23, 2019, 01:40:12 AM »

I have an Industrial CNC machine successfully running Mach3.  I love it.  I have added a 3rd party 4th Axis which is sold by Sunwin from China.  I use the IndCNC profile for rotary but that company cannot tell me how to set the Motor Tuning for this maverick addition.  The Sunwin 4th Axis gives the following setting information but I can't figure out what numbers to enter in each of the Mach3 Motor Tuning calibration boxes.

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Sunwin Gearbox Router Rotary: 
Fourth axis pulse equivalent setting:
Basic parameter setting:
Pulse for 1 rotating degree (Pulse for 1 circle of motor shaft*driver subdivision)/circumference.
For example:  two phase motor, 8 subdivision, reduction ratio 20, (200*8*20 = 32000)
     1. Mach3 set by the angle: 360 degrees a circle 32000 / 360 (degrees) = 88.88888888 (pulse).
     2. Mach3 set by graph length or perimeter 3200 / (perimeter 12.6 mm) = 254.777 (pulse).
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How does this information translate to the Step entry and other options at the bottom of the Motor Tuning Page?
I've tried many options and sometimes get proper movement in X and in Y but, after a few minutes, it starts rotating "out of control". 
The above information seems to be in mm, not inches.  But Mach3 wants Steps per Inch.  And when Sunwin says pulse, how does that translate to Steps per inch?
Help!!