Commutator and manufacturing process thereof

Abstract

The invention relates to a commutator and a manufacturing process thereof. The commutator comprises a base and commutating pieces, the back of every commutating piece is provided with a connecting wing, and the commutating piece is fixedly connected inside the base through the connecting wing; one side of every commutating piece is provided with a protrusion, and the inner surface of the other side of the commutating piece is provided with a concave which corresponds to the protrusion in size; bakelite powder is arranged between neighboring commutating pieces, a fixing point is arranged in themiddle of every two neighboring commutating pieces, on the commutating pieces and close to the end portions of the commutating pieces which are in a protruded structure relative to the base, and theinner surface of the protruded structure is provided with an inner fixing point corresponding to the fixing point. According to the manufacturing process of the commutator, the bakelite powder substitutes for sheet mica to achieve insulating effects; meanwhile, both edges of every commutating pieces are grooved, so that a central point can be conveniently found during photoelectric tracked grooving. Besides, the commutator is simple and reasonable in structure, high in production efficiency and low in cost.

Description

technical field [0001] The invention relates to a commutator, in particular to a commutator and a manufacturing process thereof. Background technique [0002] The commutator is an important component of a DC motor. The existing commutator process uses mica sheets and commutator segments to be alternately arranged to prevent short circuits caused by contact between adjacent commutator segments. The arrangement accuracy of mica is high. Once the position of the mica sheet is cheap, the commutator cannot be processed normally, and the production cost is high and the efficiency is low. Contents of the invention [0003] Aiming at the deficiencies of the background technology, the present invention provides a commutator and its manufacturing process, and overcomes the above deficiencies. [0004] The technical solution adopted in the present invention is: a commutator, including a base body and a commutator piece, the back of the commutator piece is provided with connecting w...

AI Technical Summary

Problems solved by technology

The processing of existing commutators is to use mica slices and commutator slices alternately arranged to prevent short circuit caused by contact between adjacent commutator slices, but the operation of mica slices and commutator slices is cumbersome and difficult The arrangement accuracy of mica is high. Once the position of the mica sheet is cheap, the commutator cannot be processed normally, and the production cost is high and the efficiency is low.

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