Method for ensuring coaxiality of bearing and stator core of circulating pump motor

Abstract

The invention discloses a method for ensuring the coaxiality of a bearing and a stator core of a circulating pump motor, which can greatly improve the production efficiency and reduce the manufacturing cost, and comprises the following steps: respectively fine finishing the whole specifications of a lower bearing bush and a lower end cover; assembling the lower bearing bush into the lower end cover; secondary machining a stator by being placed on a vertical lathe; placing the lower end cover well assembled with the lower bearing bush into a machined lower bearing guard, and simultaneously adjusting the inner circle of the lower bearing bush to meet the technical requirements; correspondingly drilling a plurality of pinholes between the lower bearing guard of the stator and the lower end cover and assembling pins, and simultaneously well marking positioning marks; turning over the stator after being removed from the vertical lathe; placing the stator on the vertical lathe again, and lathing the inner circle and the plane of the upper bearing guard of the stator by taking the inner circle of the lower bearing bush as the adjusting standard; firstly assembling a thrust bearing seat of an upper bearing into the machined upper bearing guard, and then correspondingly lathing the seam allowance and the plane of the thrust bearing seat; and correspondingly drilling a plurality of pinholes between the thrust bearing seat and the upper bearing guard of the stator and assembling pins.

Description

technical field [0001] The invention relates to a processing method, in particular to a method for ensuring the coaxiality of a bearing of a circulating pump motor and a stator core. Background technique [0002] The lower bearing of the conventional vertical circulating pump motor is a rolling bearing, and the technical requirements for the coaxiality of the lower bearing and the stator core are very high, that is, the coaxiality between the lower bearing sleeve and the stator core is a very important indicator. In the prior art, the lower bearing sleeve and the stator core are processed separately, which will cause cumulative errors composed of calibration errors, assembly errors and secondary positioning errors. In order to ensure the coaxiality between the inner circle of the stator core and the bearings at both ends, the stator needs to be processed twice, that is, the inner circle and the plane of the upper and lower bearing gears are machined separately based on the i...

AI Technical Summary

Problems solved by technology

If the inner circle of the bearing sleeve of the lower bearing of the car is directly matched, the diameter, dimensional accuracy and roughness of the inner circle of the bearing sleeve will not meet the technical requirements due to the limitation of the speed of the vertical lathe

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