1389
« on: March 28, 2009, 05:06:25 AM »
1. If the error is a constant amount no matter what distance you have moved, you have backlash or a loose component.
2. If the error changes as the distance moved changes you have step count error, the amount is proportional to the distance moved.
Backlash or a loose component is a constant error (within reason) it jerks one way and stops then the axis moves, reverse the direction and the component moves the other way then stops and the machine continues on its way.
If your error is constant then you have the first problem.
Look for loose blocks, belts, screws, anchor plates etc.
Graham