I rarely post here but im having a problem that I think is getting worse.
The heavy the cut I take my z axis seems as if its dropping down some. My machine is a g0704 with 570 xy motors z has the 960. Ide say month and a half ago I up graded my motor and went to a TTS style Power draw bar
So lets say I take a doc @ .100 and face off a 4 inch square with a 5/8 / .625 indexable endmill @ 25ipm . By the tim i get to the end of the operation and go back to were I started im .030 deeper into my stock.
Mach still reads 0 . I let my head sit raise all night with a dial indicator on it at zero I returned in the morning it still read 0. Im at the point were im just going to tear it down.
What to hear if any one had any opinions that may help me Thanks