How to observe the fault phenomenon and cause analysis in precision parts processing
In the process of precision parts processing, the fixture of the milling machine breaks down, and there are some obvious faults, such as the machining accuracy of the parts cannot be guaranteed, the clamping of the parts is not firm, some components of the fixture are damaged and seriously worn, and the device and mechanism cannot realize the operation function. At this time, it is mainly through detection, observation and experimental operation to preliminarily determine the main part causing the fault.
Failure cause analysis Various failures of the milling machine fixture, if caused by a single reason, the analysis can be carried out according to the general rules, such as the displacement of parts during processing, and the cause may be the clamping part failure; The dimensional accuracy of precision parts processing has regular deviation, which may be caused by the decline and looseness of the positioning element accuracy of parts; The machining accuracy deviation of the parts is consistent, which may be caused by the failure of the tool setting device. If it is caused by multiple reasons, it is necessary to further analyze the relevant reasons after analyzing the above single reason. For example, the position accuracy of the plane milling fixture decreases, which may be caused by wear on the top of the support limiting element, misalignment of the linkage clamping mechanism and other reasons.