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Copper roll type method of making commutators

A manufacturing method and commutator technology, applied in commutator manufacturing and other directions, can solve the problems affecting the performance of the motor, large radial runout of semi-finished products, poor roundness of the commutator, etc. Good degree of stability, reducing the effect of dynamic unbalance

Inactive Publication Date: 2004-12-29
ZHEJIANG GREATWALL COMMUTATOR
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the above-mentioned manufacturing method of the commutator, the procedures such as "punching the wire into a single piece of the commutator piece through the cylindrical core piece arrangement device to arrange the piece and then inserting the mica piece" are complicated and cumbersome, and the work efficiency is low. Production high cost
In particular, the sheet arranging process needs to be manually operated by personnel, and there is a gap between the commutator sheet and the sheet arranging device, resulting in a large radial runout of the semi-finished product during the outer circle process (generally 6-8μm), which makes the roundness of the commutator Poor, which affects the performance of the motor

Method used

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  • Copper roll type method of making commutators
  • Copper roll type method of making commutators
  • Copper roll type method of making commutators

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Embodiment Construction

[0016] The copper coil type manufacturing method of the commutator of the present invention comprises successively wire rolling, drawing, annealing, and punching, pressing (adding molding compound), curing, reaming, turning the outer circle, milling grooves, sanding, polishing and other processes, the punching process is punching the annealed wire rod into an annular commutator segment group (punched by a 10-ton punch press). like image 3 shown.

[0017] Because the wire drawing process in the original commutator’s slice-row manufacturing method is to draw the wire into a wire with an “I” shape in cross section, and then punch it into a single commutator piece with a dovetail-shaped longitudinal section, add The molding compound is pressed and solidified, so that the contact area between the commutator piece and the molding compound is small, that is, the adhesion between the commutator piece and the molding compound is small, so that the commutator made is easy to operate d...

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Abstract

The invention discloses a copper coil type manufacturing method of a commutator, comprising in turn the following steps: wire rolling, drawing, annealing, punching out, pressing, solidifying, reaming, lathing an outer periphery, channeling, sanding, and polishing etc, wherein the pressing step makes an annealed wire be pressed into an annular commutator segment assembly. The invention eliminates the original fussy sheet arranging step so that the produced commutator provides an good article roundness, which makes the dynamic unbalance of the commutator be minimized.

Description

1. Technical field [0001] The invention relates to a method for manufacturing a commutator for a motor. 2. Background technology [0002] The manufacturing method of the existing commutator for electric motors is a sheet type, that is, the wire is first rolled, drawn, and annealed, and then the wire is punched into a single piece of the commutator (punched by a 5-ton punch) , and then through arranging, pressing, curing, reaming, outer circle turning, milling, sanding, polishing and other processes, it is made into a finished commutator. Wherein the principle of the film arrangement process has adopted the Chinese invention patent application "commutator film arrangement device and film arrangement process" with the publication number CN 1089762A (application number: 93120155.1, public date: July 20, 1994, authorized announcement date: 1995 On May 31, 2009), that is, using the cylindrical core chip arrangement device as the skeleton, insert the commutator segments of the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R43/06
Inventor 杨积锡林祥清张学敏罗洪
Owner ZHEJIANG GREATWALL COMMUTATOR
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