Hi all I have a problem that I am sure I am just doing something stupid. I have a cnc mill at home running on Mach3. Been using that for a couple years. We recently got a Tormach at work and I have been struggling with setting the Z zero on the first tool in a program. Here is my procedure, please tell me what I am doing wrong.
1 Reference machine
2 Edge find X and Y zero DRO's for these 2
3 Load program
4 Load 1st tool that the program will call for
5 Make sure the right tool number is in the tool# box
6 Move tool to top of part and zero the Z Dro
7 Move z up to safe distance
8 Press Cycle Start
When the program starts, z is never at zero it is always either above or below where I set it to begin with, and the DRO #'s have changed also. If I hit cycle stop and when the movement starts I hit pause. Then set the z zero then it works, but I do not think I should have to do that?
I do not know what I am doing wrong as I use this procedure on the mill at home everyday and never have this problem. Any help would be greatly appreciated!!
Walt