Permanent magnet motor double-key-groove rotor punching sheet capable of being used at multiple angles

Abstract

The invention relates to a permanent magnet motor double-key-groove rotor punching sheet capable of being used at multiple angles. The permanent magnet motor double-key-groove rotor punching sheet comprises a punching sheet body, wherein a plurality of magnetic steel grooves are formed in the position closed to the periphery of the punching sheet body, a shaft hole is formed in the center of the punching sheet, a plurality of key groove openings are formed in the inner circle of the shaft hole, a corresponding key groove opening is formed in the other side symmetric to the center of each key groove opening, a connecting line is formed between two centrally-symmetric key groove openings and divides the punching sheet body into sectors incompletely-identical in angle. The permanent magnet motor double-key-groove rotor punching sheet is provided with multiple key groove openings, the key groove openings are formed in the positions for the key groove openings to be formed at different angles, the multiple possibly-existing key groove openings are unified on the same punching sheet body, high cost of multiple dies is saved, and manufacturing process is simplified. Due to the fact that the varieties of punching sheets are decreased, categorization is not needed during package, turnover, transportation and inventory, too much time for punching sheet categorization is not needed in the installing process, installation can be performed only by adjusting the angles of the punching sheet, inventory and installation are simplified, inventory cost and manufacturing time are saved, and production efficiency is improved.

Description

technical field [0001] The invention relates to a permanent magnet motor rotor stamping piece which reduces the number of molds and is easy to install, in particular to a permanent magnet motor double keyway rotor stamping piece which can be used at multiple angles. Background technique [0002] In the prior art, installing the rotor punch on the rotor needs to be divided into multiple sections, each segment of the punch needs to be stamped with a set of molds, which actually greatly increases the production cost of the punch, each set of punch Many sets of corresponding molds are required, which increases the processing process and labor costs; at the same time, when installing the punches, because there are many types of punches, the installation process is relatively complicated. It is necessary to distinguish the type of punches and the installation angle of the punches. Difficulty and working hours have also increased accordingly. [0003] The key points in the process...

AI Technical Summary

Problems solved by technology

[0003] The key points in the process of making and installing punching sheets are the position setting of the key slots and the angle setting between the key slots. Most of the punching sheets in the prior art are two key slots, which cannot simplify the production of punching sheets and the installation of punching sheets. The process of filming

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