Often this is because the 'compliant' side of a X axis gantry is not being followed faithfully by the 'Non-compliant' side,especially if only one side is driven, is there a change in the parallelogram with a change in direction of X axis, if so there is flex from one side to the other. If the X axis is carrying a fairly high load, weight of the Y etc, as well as the force created by cutting, you may have to couple the drive from one side of the gantry drive to the other side if this is not already in place.
If there is no flex then you should put in place a method of adjustment to square up the y to the x by cutting a series of trial and error rectangles.
Al
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CNC, Mechatronics Integration and Machine Design.
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E. |