Motor iron core manufacturing method

A manufacturing method and iron core technology, applied in the manufacture of stator/rotor body, etc., can solve the problems of deterioration of magnetic performance, decrease of motor precision, low motor qualification rate, etc., to improve electrical precision, reduce eddy current loss, and increase product qualification rate Effect

Active Publication Date: 2015-06-24
GUIZHOU AEROSPACE LINQUAN MOTOR CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

Under this working medium, the core stacking glue X98-11 commonly used in our factory is no longer applicable.
The stacked iron cores of commonly used motors working in cold media are mechanically fixed, while the punching sheets used in resolvers are soft magnetic alloys, which are sensitive to processing stress. Commonly used mechanical fixing methods may cause cold work hardening, making the magnetic can deteriorate, resulting in a decrease in motor accuracy
After many attempts, the qualified rate of the motor is low, which seriously affects the development progress of the product and restricts the research and development of this type of motor in our factory.

Method used

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Embodiment Construction

[0021] The technical solution of the present invention is further described below, but the scope of protection is not limited to the description.

[0022] A method for manufacturing an electric motor core, characterized in that it comprises the following steps:

[0023] (1) The iron core punching sheet is processed and shaped according to the external dimensions;

[0024] (2) Carry out magnetic performance treatment to the iron core punching sheet;

[0025] (3) Electrophoretic coating: After the iron core punching sheet is divided into pieces and hung, the surface of the iron core punching sheet is cleaned first, then phosphating is carried out, and then electrophoretic paint is used for electrophoretic coating.

[0026] (4) Semi-curing treatment: Put the electrophoresis punched iron core into an oven for drying at a temperature of 100°C for 20 minutes;

[0027] (5) Stacking: Take out the iron core punching sheet for stacking, apply silicone grease between the stacking tool ...

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Abstract

The invention provides a motor iron core manufacturing method. The manufacturing method is characterized by comprising the following steps that 1, iron core punching sheets are machined and formed according to outline dimensions; 2, the iron core punching sheets are subjected to magnetic performance treatment; 3, electro-coating is conducted; 4, semi-curing treatment is conducted; 5, stack mounting is conducted; 6, complete curing treatment is conducted. According to the manufacturing method, the iron core punching sheets are subjected to electro-coating; electrophoresis paint is subjected to semi-curing treatment based on the character that the electrophoresis paint can be semi-cured; after the punching sheets are stacked, the electrophoresis paint is completely cured, and punching sheets are bonded firmly after curing is finished. By means of the manufacturing method, the problem existing when motor iron cores are stacked in coolant media is solved, the possible influence of adhesive application and machining stress on the motor performance is avoided, the electric accuracy of a rotary transformer is improved, and the qualified rate of products is increased by 50% or more.

Description

technical field [0001] The invention relates to the technical field of motor production, in particular to a method for manufacturing a motor iron core. Background technique [0002] The working medium of the rotary transformer matched with the motor of the air conditioner compressor is refrigerant R134a. Under this working medium, the core stacking glue X98-11 commonly used in our factory is no longer applicable. The iron core stacks of commonly used motors working in cold media are mechanically fixed, while the punching sheets used in resolvers are soft magnetic alloys, which are sensitive to processing stress. Commonly used mechanical fixing methods may cause cold work hardening, making the magnetic can deteriorate, resulting in a decrease in motor accuracy. After many attempts, the pass rate of the motor was low, which seriously affected the progress of product development and restricted the research and development of this type of motor in our factory. Contents of th...

Claims

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Application Information

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IPC IPC(8): H02K15/02
Inventor 蒙贇王燕
Owner GUIZHOU AEROSPACE LINQUAN MOTOR CO LTD
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