I am attempting to run a 4-Axis hemi-spherical dome wind and have encountered an issue with the retraction of the delivery head (Y-axis linear displacement) at the end of each pass.
The first initial pass appears successful, however, once progressing to the second pass the delivery head retracts too far to produce a greater offset distance from mandrel. This retracted offset increases sequentially each pass, for example on the first pass I have a delivery head off set of 'n' (desired), the second pass has an offset of '2n' (undesired), third pass '3n' etc. The G-code used shows a consistent delivery head retraction request (E and J commands).
There's a lot of frictional resistance when moving the delivery head linearly in and out, which I'm concerned is contrbuting to this issue. Has anyone else encountered this issue?
Any feedback or suggestions are much appreciated.