Situation 2：In Batch Production, Workpiece Out-Of-Tolerance Occasionally Occurs.

Cause of failure: must carefully check the fixture, and take into account the operator’s operation method, and the reliability of clamping, due to the size change caused by clamping, must improve the fixture so that workers as far as possible to avoid human negligence to make misjudgment phenomenon; Numerical control system may be affected by the fluctuation of external power supply or interference after automatic interference pulse, to drive the drive to accept excess pulse drive motor to take away or less phenomenon.

Solution:

Grasp the rule, try to use some anti-jamming measures, such as strong electric field disturbance of high voltage cables and weak current signal of the signal isolation, join the absorption capacity of anti-interference and a shielding wire isolation, in addition, check whether the ground wire connection is firm, grounding contact recently, all anti-interference measures should be taken to prevent the system disturbance.