Radial axis structure of motor and welding process

Abstract

The invention relates to the manufacture field of motors, and discloses a structure realizing a radial axis of a high power motor and a welding process. The radial axis structure of the motor comprises a rotor shaft (1) and a support rod (2), wherein the support rod (2) is installed between the rotor shaft (1) and a rotor sheet (4) of the motor, and the rotor shaft (1) and the support rod (2) are welded into a radial structure. The rotor shaft (1) of the motor adopts No.45 steel or 40Cr, and the support rod (2) adopts Q235-A carbon steel. The invention has the beneficial effects of saving materials, being favorable for heat radiation of the rotor surface and rotor cage bars, increasing the welded structure of the Q235-A radial rod by adopting the 40Cr axis, ensuring that the rotor axis does not have cracks after conditioning by applying the new process and measures, having very good welding effect, ensuring the performance of the motor, and adapting to the market requirements.

Description

technical field [0001] The invention relates to the field of motor manufacturing, in particular to a structure and a welding process for realizing a radial shaft of a high-power motor. Background technique [0002] Recently, high-power motors have developed rapidly. For large-scale explosion-proof and civil three-phase asynchronous motors, the rotor shaft generally adopts integral forging technology, and the axial ventilation holes are processed on the rotor core punch. In this way, the material DW540-50 used for the punching of the motor rotor is mostly used; the ventilation holes added on the rotor core should not be too large, which will affect the ventilation effect of the rotor; as the power of the motor increases, the shaft diameter becomes thicker, making the motor The increase in the overall weight also increases the load on the motor bearings; the overall forged shaft has a large volume, and it is easy to break after the shaft quenching and tempering treatment, resu...

AI Technical Summary

Problems solved by technology

In this way, the material DW540-50 used for the punching of the motor rotor is mostly used; the ventilation holes added on the rotor core should not be too large, which will affect the ventilation effect of the rotor; as the power of the motor increases, the shaft diameter becomes thicker, making the motor The overall weight increases, which also increases the load of the motor bearing; the overall forged shaft is bulky, and it is easy to break after the shaft quenching and tempering treatment, resulting in waste of materials

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