A segmented skewed rotor tooling for a permanent magnet synchronous motor

CN224319203UActive Publication Date: 2026-06-02SHANGHAI MONTORUI TECH CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: SHANGHAI MONTORUI TECH CO LTD
Filing Date: 2025-07-21
Publication Date: 2026-06-02

AI Technical Summary

Technical Problem

Existing rotor tooling makes it difficult to achieve high-precision positioning and angle control of segmented skewed poles in permanent magnet synchronous motors, resulting in poor motor torque pulsation suppression. Furthermore, tooling replacement is cumbersome when switching between production lines for different motor specifications, increasing production cycle and cost.

Method used

A segmented skewed-pole rotor tooling was designed, comprising a base, locating pins, locating blocks, shafts, and rotor core assemblies. By fixing the base, locating pins, and locating blocks, high-precision skewed-pole angle control of the rotor core assembly is achieved, and the shafts are press-fitted to complete the fixation, simplifying the tooling structure and production process.

Benefits of technology

It improves the control accuracy of the skew angle of the rotor core assembly, enhances the consistency of motor performance, reduces production costs and cycle time, and is suitable for mass production.

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Figure CN224319203U_ABST

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Abstract

This utility model relates to the field of rotor tooling technology, specifically to a segmented skewed-pole rotor tooling for a permanent magnet synchronous motor. It includes a base, two locating pins, a locating block, a shaft, and three rotor core assemblies. Each of the three rotor core assemblies and the locating block has two locating holes. The base is fixed to the press base plate platform, then the locating pins are fixed to the base. The three rotor core assemblies are then placed into the locating pins, maintaining a fixed skewed-pole angle. The locating block is then placed on the locating pins and rotor core assemblies. The shaft is then inserted into the locating block, and the press is used to press the shaft into a fixed position. After pressing, the locating block is removed, thus completing the three-segment fixed skewed-pole configuration of the shaft and the three rotor core assemblies. The skewed-pole angle control accuracy is high, the pressing efficiency is high, it is suitable for mass production on a production line, and the tooling structure is simple and low-cost.

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