Motor rotor expansion positioning device

By providing a synchronous positioning first and second positioning mechanisms in the motor rotor expansion positioning device, concentric pressing between the upper and lower dynamic balance plate, cast aluminum rotor, and rotor shaft is realized, and the problem of the rotor shaft chewing the lower dynamic balance plate in the prior art is solved, and the pressing efficiency and processing accuracy are improved.

CN112838725BActive Publication Date: 2025-03-18KUNSHAN JIEYUN INTELLIGENT EQUIP CO LTD
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Patent Information

Application Number
CN202110219475.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-02-26
Publication Date
2025-03-18
Estimated Expiration
2041-02-26

AI Technical Summary

Technical Problem

The prior art is difficult to realize concentric pressing between the upper and lower dynamic balance plates, cast aluminum rotors, and rotor shafts in the motor rotor, resulting in the rotor shaft that may damage the lower dynamic balance plate during the pressing process.

Method used

The motor rotor expansion positioning device is adopted, which includes a positioning shaft, an inner support conical shaft, an expansion sleeve, a fixed seat and a driving cylinder. The lower dynamic balance plate is positioned through the second positioning mechanism, and the rotor shaft is positioned through the first positioning mechanism, so that the four are arranged coaxially to realize synchronous pressure installation.

Benefits of technology

It greatly improves the pressure assembly efficiency, ensures the concentricity of the four to the greatest extent, improves processing accuracy, and effectively avoids the edge gnawing of the upper and lower balance plates, and reduces the scrap rate.

✦ Generated by Eureka AI based on patent content.
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Abstract

The present invention discloses a motor rotor expansion positioning device, including a positioning shaft, an inner support cone shaft, an expansion sleeve, a fixed seat and a driving cylinder coaxially arranged from top to bottom, the positioning shaft has a positioning pin inside, and the positioning shaft and the positioning pin form a first positioning mechanism; the expansion sleeve is arranged between the inner support cone shaft and the fixed seat and sleeved on the inner support cone shaft, the driving cylinder drives the inner support cone shaft to move downward and squeeze the expansion sleeve, so that the outer diameter of the expansion sleeve is expanded outward for positioning, and the inner support cone shaft, the expansion sleeve and the driving cylinder form a second positioning mechanism; and the inner support cone shaft is fixedly connected to the positioning shaft, and the first positioning mechanism and the second positioning mechanism are synchronously positioned. The present invention sets a first positioning mechanism and a second positioning mechanism for synchronous positioning, so that the rotor shaft, the lower dynamic balancing plate, the cast aluminum rotor and the upper dynamic balancing plate are coaxially arranged for press-fitting, which guarantees the concentricity of the four to the greatest extent and improves the processing accuracy.
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