Need Help!- EZ TRAK OFF IN Z AXIS

[dmac88]

Hello,

Our Ez-Track mill is out in the z axis as much as .030" when the quill is fully extended ( approx. 4.5"). Basically, what we measure with an indicator does not correspond to the displayed value. We have just replaced the encoder on the z axis motor but this has not solved the problem. Could it be the backlash or leadcomp settings? Perhaps it is the slide which measures the z axis travel? All suggestions will be greatly appreciated.

Thanks

[TonyAllen]

Our Z-axis got out about .030 also it turned out to be the Screws holding the pickup was just loose enough to give when the cable got taught ...
Tony

[machintek]

So the error is progressive as the Z moves and returns to 0?
Have you checked the lead error/pitch error comp?
At the main screen press *, a window will pop up asking for a code. The code is 11235 followed by ENTER twice.

George

[dmac88]

Thanks for the advice. We have tried to change the leadcomp but it does not seem to have any effect on the z axis. Could it be perhaps a defective z axis scale.