The CNC machine feed system, especially the continuous control system, requires automatic control of both the position and speed of the feed motion, and requires high positioning accuracy and transmission response characteristics. Since the CNC machine feed system is often in an automatic reverse direction, if there is a gap in the gear drive pair in the drive chain, the feed motion will lag behind the command system in the reverse direction, which affects the system accuracy of the drive chain and affects the machining accuracy. Therefore, measures must be taken to eliminate the gap in the gear drive pair to improve the CNC machine.
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