Manufacturing process of drive motor pot base for electric vehicles

Abstract

The invention discloses a novel driving motor pot type base of an electric automobile and a manufacturing process thereof. The base comprises a cylindrical main body (1) and a back end cap (2), wherein the back end cap (2) is integrally formed with the main body (1), the front end surface of the main body (1) is uniformly provided with connecting thread holes (3) in the circumference direction, the front end of the inner surface of the main body (1) is provided with a front spigot (4), and the back end cap (2) is provided with a bearing chamber (2). The base has the advantages that the motor base and the back end cap are integrally formed, and the integral processing is adopted, so the assembly process of the motor is simplified, the assembly precision of the motor and the coaxiality of the base and the front end cap are improved, and the system noise is reduced; an aluminum base is adopted, so the weight of the base is reduced, the miniature and light-weight requirements of the driving motor of the electric automobile are met, the casting process is matured, the rust is avoided, and the environment-friendly requirement is met.

Description

technical field [0001] The invention relates to the technical field of motor bases, in particular to a manufacturing process of a basin-type drive motor base for an electric vehicle. Background technique [0002] The coaxiality between the spigots at both ends of the motor stator and the bearing chambers of the front and rear end covers, and the verticality between the machine base and the mating surface of the end cover are the main reasons that affect the vibration and noise of the motor. The motor base and end cover of traditional electric vehicles are processed separately and then assembled. During the processing process, due to the inconsistent positioning reference, the coaxiality between the notch of the base and the bearing chamber of the end cover is poor, resulting in a large radial runout of the main shaft of the power system. Large, causing excessive noise in the power system, abnormal noise, and even a serious impact on the vehicle transmission system when loadi...

AI Technical Summary

Problems solved by technology

The motor base and end cover of traditional electric vehicles are processed separately and then assembled. During the processing process, due to the inconsistent positioning reference, the coaxiality between the notch of the base and the bearing chamber of the end cover is poor, resulting in a large radial runout of the main shaft of the power system. Large, causing excessive noise and abnormal noise in the power system, and even seriously affecting the transmission system of the whole vehicle when loading

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