Machining method of shielding motor rotor

Abstract

Disclosed is a processing method for shielding a motor rotator. Two shielding plates are covered on the shaft when a rotator is processed by rough machining; then the connection part between the shaft and the shielding plate is processed by argon arc welding; then a stainless steel thread is welded by fusion welding on the base to achieve a sealing function; then the rotator is processed by finish machining and a rotator shield cover is installed; and then the rotator is put into an oven and kept at the temperature of 250 DEG C for 4-5 hours to vaporize the moisture out of the rotator inner cavity from the leakage detecting hole by high temperature; after that, the rotator is taken out and the leakage detecting hole is immediately sealed by argon arc welding; and then the rotator can be moved to following processes. Compared with prior art, firstly, the method solves the problem of leaving moisture in the rotator and effectively avoids the bulge phenomena of the rotator shield cover; secondly, the rotator is sealed after being in 250 DEG C for long time, the shield cover can shrink and closely cling to the outer diameter of the rotator iron core after cooling, making the place thereof gapless; moreover, the shield cover will not distort in the future when the pump works because the shield cover performs a certain of thermal expansion and cooling contraction at the situation above the working status.

Description

technical field [0001] The invention relates to the technical field of electromechanical equipment manufacturing, in particular to a processing method for a shielded motor rotor. Background technique [0002] Shielded motors are generally used to be installed on various types of HVAC pumps, but due to existing processing technology problems, the rotor shielding sleeve often expands or bulges after the motor has been used for a period of time, causing various problems. [0003] Referring to Figure 1, the rotor of the shielded motor includes a shaft 5 with an iron core 6 on the shaft, screen plates 2 and 3 at both ends of the iron core 6, and a shielding sleeve 4 on the outer side of the iron core 6. The processing method is generally two rotors The screen plates 2 and 3 are hot-installed on the shaft 5 shown in Fig. 1 in time after being heated at high temperature, and after the natural cooling, the inner diameter of the screen board shrinks to clamp the shaft 5 to seal, and ...

AI Technical Summary

Problems solved by technology

This processing technology has certain defects, that is, it is easy to enter the moisture from the leak detection hole 1 during the processing, and the moisture will be stored in the rotor shielding sleeve 4 after sealing, and the moisture will be heated and expanded during actual operation after leaving the factory to shield it. Set 4 starts to rub against the shielding sleeve of the stator, causing damage to the shielding sleeve and causing certain quality problems

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