Machsupport Forum
Mach Discussion => Feature Requests => Topic started by: Mihir on August 20, 2015, 11:00:18 PM
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Hi guys,
I am using Mach 3 licensed software for one of my CNC projects. I want to manually jog/inch my z-axis (Tool axis) upwards/downward at a very low speed, while the G-code is being executed.
Haven't found any solution yet..please help. Is there any macro, that I need to type in??
Also, it seems there are a few softwares which offer this functionality.
Please advise. Any inputs will be helpful
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It is not possible with Mach3. Mach3 does not have indepedant axis control while running Gcode.
(;-) TP
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Just a couple of things to think about...
Engineering wise it was a bit complex but I had a similar issue where I needed to adjust the position of a Y axis during a Gcode run. I cant give you full details because it was a commercial venture but the Y axis was driven by two stepper motors acting through a differential gear - one motor did all the work (following the Gcode instructions) whilst the other stepper motor provided the + / - adjustment and was driven (controlled) by a separate PLC which took sensor information as it's input.
For a Z axis it may be possible to make a circular mounting for the stepper motor which is rotationally adjustable (by hand perhaps) for say 45 degrees in each direction and easily locked in position. This would provide 1/4 the leadscrew pitch in vertical adjustment of the axis. Greater rotational adjustment (within the limitation of the wiring) = greater vertical adjustment of the axis.
Tweakie.
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Use emulated THC inputs. Make sure ArcOK (THCON) is active and THC is turned on. Then you can use the keys of your choice to jog Z whilst X and Y move under program control.