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General Mach Discussion / New build CNC slave axis stops working when jogging

« on: December 30, 2018, 08:51:40 AM »

I have just built a new CNC machine and am using a Chinese BOB 5 axis. windows 7, 32 bit with the LPT port and MACH 3

X, Z, Y(SLAVE A) so two motors on Y axis

All the axis work when tuned, however I find when jogging the Y axis slave axis will stall and in a very strange way.

if I have jogged the x axis, in one direction, the slave side of the Y axis will not jog (or is in step mode) until I have pressed jog in the opposite direction on the X axis.

I'm am not a total newbie to this as I've built CNC a machine before but not one with a slaved axis.

*ANY* ideas welcome as I am having trouble searching the forum to find anything

Regards

Les

2

General Mach Discussion / Toolpath displayed is not what I have programmed

« on: July 01, 2010, 05:07:16 PM »

Hi There, I have a strange thing happening with my mach3 attached to my cnc machine.

All I want to do is mill out six holes in a line fairly easy, but whne I generate my gcode with CAMBAM and load it in to my machine its wrong see toolpathwrong.jpg wheat I should get is toolpathcorrect.jpg, attached is also the file. I have tried diferent version and nothing changes the correct image is from an0ther machine I use to generate the code, any ideas.

PS If I say cycle start, whatever he toolpath is displayed is what is cut. It seems I think it is the CAMBAM files if I load in other files they are fine. but the same files are correct in my generating machine.

Any ideas???

Les