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General Mach Discussion / Re: thread problem
« on: January 15, 2009, 11:25:37 AM »
Tubular,
Looks like you may have 2 problems, maybe they are related. Are you using a wizard for the Gcode?
The X moving looks like a taper or chamfer command in the threading Gcode command, don't know how else the x would move during the cut passes.
The z pitch change is very puzzling. I think I would maybe write a short gcode series to move the z 6 " at a slow feed rate towards the chuck then rapid back to the start and repeat 20 times. Put a dial indicator on the chuck end
and watch to see if it comes to the right place each time.
Good luck!!
Arnie
Looks like you may have 2 problems, maybe they are related. Are you using a wizard for the Gcode?
The X moving looks like a taper or chamfer command in the threading Gcode command, don't know how else the x would move during the cut passes.
The z pitch change is very puzzling. I think I would maybe write a short gcode series to move the z 6 " at a slow feed rate towards the chuck then rapid back to the start and repeat 20 times. Put a dial indicator on the chuck end
and watch to see if it comes to the right place each time.
Good luck!!
Arnie