commutator manufacturing method

Abstract

The invention relates to a method for manufacturing a commutator. The geometric shape and size of the insulating groove of the commutator are guaranteed by mica sheets, and a notch is punched out during the mica sheet punching process, and then centrifugal force is used in the secondary molding process of rotary heating Separating the outside and inside of the mica sheet from the notch, without milling or manually breaking off the outside of the mica sheet, the insulation groove can be formed naturally without burrs in the groove, which prolongs the life of the commutator The service life of the motor ensures the performance of the motor; after secondary molding by rotary heating, the internal stress of the plastic matrix of the commutator can be kept in balance, preventing the plastic matrix from being torn and deformed during the use of the commutator, which can greatly improve the commutation performance. life of the guide.

Description

technical field [0001] The invention relates to a commutator manufacturing method. Background technique [0002] The molding process of the plastic matrix commutator in the prior art is generally as follows: 1. The blanking and pulling of the commutator segment; 2. Punching the commutator segment and cutting the mica sheet into strips; Carry out mica slice punching; 4. Arrange the commutator slices, and use mica slices for interval insulation between the commutator slices; 5. Put the arranged commutator slice rings into the injection mold for injection molding; 6. Curing; 7. Boring; 8. Turning; 9. Milling wiring slots, milling insulation slots; 10. Passing the inspection. [0003] The commutator produced by the above process has the following defects: 1) After long-term use, the plastic matrix of the commutator will be deformed and cracked, resulting in jumping pieces and flying pieces; 2) The insulating groove is processed by milling cutters , There will inevitably be bur...

AI Technical Summary

Problems solved by technology

[0003] The commutator produced by the above process has the following defects: 1) After long-term use, the plastic matrix of the commutator will be deformed and cracked, resulting in jumping pieces and flying pieces; 2) The insulating groove is processed by milling cutters , there will inevitably be burrs in the insulation groove, which will cause large noise, excessive wear of carbon brushes, etc., and affect the operation performance of the motor

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