Looks like your Steps per Degree is resolved and you have now run into a feedrate issue.
Here again the problem is the different units. As an example say you have a feedrate of F10. A feedrate of 10 in/min would be quite reasonable for the linear axis but 10 deg/min for the A axis would barely go tick, tick, In fact it would take over half an hour to go only one rev. To obtain say 10 RPM on the A axis would require an F3600.
If your project will allow keeping the linear and rotary moves on separate lines, then enter the desired feed on the line for each axis. Make sure your A axis velocity is set high enough.
If not, it gets a little trickier. Mach has a feature called ‘Rotation Radius’ on the Settings page. This will allow Mach to calculate internally a deg/min that will result in the requested linear feed at a given radius.
You may find this calculator helpful:
http://www.machsupport.com/forum/index.php/topic,16315.0.htmlHope this helps.
Al
Hi, Thanks for the reply.
I have used the 4.444 step per setting but the movement of the a-axis was virtually imperceptible, although I was able to hear a tick-tick-tick-... which was likely each degree. The velocity line was not visible on the motor tuning graph, probably below the range. Nonetheless, maybe I can jack up the Acceleration to compensate.
Thanks again for your help.