Hello Guys:
Here is a very weird problem i m facing with my mill: (4 axis - G540 -ballscrews - SmoothStepper)
After tramming the mill to a acceptable degree,
And measuring with the dial and physically verifying the distance on the DRO is the actual distance traveled,
I made a small cube (10x10x6mm) in my CAD prog to find the 0,0,0 of the machine. ( I do roughing and finishing on top/bottom)
After cutting - measuring - adjusting the offset i got a pretty good accuracy. (about 0.05mm tolerance).
Here is the weird part:
when i cut my test part i always get the same result, but when i cut other parts they about 1mm smaller in the Z axis. (ie: my part should be 6.1mm in Z and it comes out 5mm)
The problem occurs no matter:
- If I use SS or not,
- Two different computers,
- I run simulations to exclude any CAM issues.
- While using the LTP driver and press the verify button I don't have lost steps in the report.
In the bottom line:
When i cut some rectangular parts I cannot recreate the error, When i do pocketing or anything else I end with physical geometry which is missing about 1mm in Z.
I would highly appreciate any ideas on this very weird problem.