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Tips you should know about batch parts machining

December 16, 2022

A batch of parts processing accuracy is poor, generally due to the installation and adjustment, the feed dynamic between the axes according to the error is not adjusted, or due to the use of wear and tear, the machine tool each axis drive chain has changed. Can be re-adjusted and modify the amount of clearance compensation to solve.

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When the dynamic tracking error is too large and alarm, you can check: whether the servo motor speed is too high. Position detection element is good. Whether the position feedback cable connector is in good contact. Whether the corresponding analog output latch and gain potentiometer are good. The corresponding servo drive device is normal.


Second, the machine tool movement overshoot caused by poor processing accuracy, may be acceleration and deceleration time is too short, can be appropriate to extend the speed change time. May also be a loose connection between the servo motor and the screw or rigidity is too poor, can be appropriate to reduce the position of the ring gain.

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Third, the roundness of the two axes linkage exceeds the difference


(1) Axial deformation of the circle


This deformation may be caused by the machinery not being adjusted properly. Poor positioning accuracy of the axis, or improper compensation of the screw gap, can lead to circularity error when over quadrant.


(2) Oblique ellipse error


In this case, the position deviation value of each axis should be checked first. If the deviation is too large, the position ring gain can be adjusted to exclude. Then check whether the interface plate of the resolver or induction synchronizer is well adjusted, and then check whether the mechanical drive vice clearance is too large and whether the clearance compensation is appropriate.