What are the common faults of milling machine fixtures in precision parts processing

Observing the phenomenon of faults in the milling machine fixture during precision part processing, there are some obvious fault phenomena, such as the inability to guarantee the machining accuracy of the parts, unreliable clamping of the parts, damage and severe wear of certain components of the fixture, and the inability of the device and mechanism to achieve operational functions. At this point, it is mainly through detection, observation, and experimental operations to preliminarily determine the main cause of the fault.

Fault cause analysis: If various faults of the milling machine fixture are caused by a single cause, the analysis can be carried out according to general rules. For example, if the part undergoes displacement during the processing, the cause may be a fault in the clamping part; There is a regular deviation in the machining dimensional accuracy of the parts, which may be caused by a decrease or looseness in the accuracy of the positioning components of the parts; The machining accuracy deviation of the parts is consistent, which may be caused by faults in the tool setting device, etc.

If it is caused by multiple reasons, it is necessary to analyze the above single cause before further analyzing the relevant reasons. For example, during the processing of precision parts, a decrease in positional accuracy was found in the planar milling fixture, which may be caused by multiple reasons such as wear on the top of the support limit element and misalignment of the linkage clamping mechanism.