Backlash compensation in a CNC machine control system improves machining accuracy by correcting for the play or clearance in the mechanical transmission components, primarily the ballscrews that drive the machine's axes. Backlash refers to the amount of movement lost when the direction of an axis changes. This lost motion is due to the necessary gap between the screw and the nut of the ballscrew mechanism. When the CNC control system commands an axis....
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