Processing technology of thrust pad base of shield motor

Abstract

The invention relates to a machining process for a thrust pad base of a shielding motor, which comprises the following steps of: positioning and clamping the thrust pad base by adopting a positioning tool, machining a plane on one side, adjusting the position of the thrust pad base after machining the plane on one side, re-positioning the position of the clamping tool, and machining the plane on the other side. Thrust pad base space angle size machining is completed on the same clamping mould. The thrust pad base can be machined on the same positioning fixture, the angle size and tolerance required by a drawing are guaranteed, the subsequent assembly problem caused by the fact that the space size cannot be measured is avoided, and meanwhile the problem that alignment cannot be achieved after clamping is solved.

Description

Technical field: [0001] The invention relates to a process for processing thrust tiles of shielded motors. Background technique: [0002] With the continuous improvement of the safety of nuclear power plants, the primary loop reactor coolant pump requires maintenance-free, no leakage, and long life. Shielded motors with this feature will be widely used. In order to achieve the above goals, the bearing life of domestic shielded motor products is now designed from the original thousands of hours to tens of thousands of hours or even higher running time. The establishment of water film is the basis for reliable bearing operation, which requires higher manufacturing accuracy and higher indexing. Accuracy, and the thrust bearing as a support plays a key role in it, so the manufacture of thrust bearings is the key to the manufacture of shielded motor bearings, so in order to improve the precision of thrust bearings, the processing and indexing of thrust pads are undoubtedly high. ...

AI Technical Summary

Problems solved by technology

In order to achieve the above goals, the bearing life of domestic shielded motor products is now designed from the original thousands of hours to tens of thousands of hours or even higher running time. The establishment of water film is the basis for reliable bearing operation, which requires higher manufacturing accuracy and higher indexing. Accuracy, and the thrust bearing as a support plays a key role in it, so the manufacture of thrust bearings is the key to the manufacture of shielded motor bearings, so in order to improve the precision of thrust bearings, the processing and indexing of thrust pads are undoubtedly high. point, while the traditional processing method adopts the overall processing of the disc, and then the milling machine, wire cutting and other equipment process the joint surface according to the marking benchmark. This kind of processing will cause inaccurate indexing due to the influence of cutting force. The bearing capacity of the tiles is different, which eventually leads to the unstable operation of the rotor on the bearing, which increases the vibration of the main pump motor and reduces the operating life

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