Hi
Can anyone tell me if they have had problems with they c axis positioning incorrectly.
I am drilling 20 equally spaced holes in a ring of dia 800mm, indexing the C using G90 and fully clamping before drilling.The head spindle is indexed at 90.

We have produced 15 components to date and have differeing results in terms of true position errors. When looking at the result i can't find any common trends from the results.
I have spoken to someone who has 3 of these machine and they have seen simluar trends. They suggested turning the thermal compansation off, which i now done, but still waiting to run next part of.

Has anyone had this problem???

Thanks in advance.

Richie