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Powder forming type carbon surface commutator and manufacturing process thereof

A manufacturing process, commutator technology, applied in the commutator field

Active Publication Date: 2014-04-30
NINGBO SHENGKE COMMUTATOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a powder forming carbon surface commutator and its manufacturing process. The process is simple, the welding step is removed, the cost is reduced, and the assembly of the copper sheet and the commutator piece solves the problem of the corresponding motor rotor The problem of high temperature during spot welding

Method used

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  • Powder forming type carbon surface commutator and manufacturing process thereof
  • Powder forming type carbon surface commutator and manufacturing process thereof
  • Powder forming type carbon surface commutator and manufacturing process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A: Take the formed 8 pieces of copper sheets 2 and 8 hook-shaped reversing strips 3, and perform ultrasonic cleaning and galvanizing on the surfaces of the copper sheets 2 and hook-shaped reversing strips 3;

[0051] B: The main support body 1 and the middle filling body 4 are formed by pressing bakelite powder;

[0052] C: arrange 8 pieces of copper sheets 2 and 8 pieces of hook-shaped reversing strips 3 in the main support body 1;

[0053] D: Transfer the arranged main support body 1 into a special mold, pour the graphite powder into the lower end of the main support body 1 and press it into a cake shape. The pressing is carried out at room temperature, the pressing pressure is 18Mpa, and the pressure is maintained for 10 seconds , pressing the carbon matrix 6 and the hook-shaped reversing bar 3 together;

[0054] E: After the carbon matrix 6 is pressed, the middle filler 4 is loaded, and the gap between the middle filler 4 and the main support 1 is filled with bakelit...

Embodiment 2

[0068] A: Take the formed 12 pieces of copper sheets 2 and 12 hook-shaped reversing strips 3, and perform ultrasonic cleaning and galvanizing on the surfaces of the copper sheets 2 and the hook-shaped reversing strips 3;

[0069] B: The main support body 1 and the middle filling body 4 are formed by pressing bakelite powder;

[0070] C: arrange 12 pieces of copper sheets 2 and 12 pieces of hook-shaped reversing strips 3 in the main support body 1;

[0071] D: Transfer the arranged main support body 1 into a special mold, pour the graphite powder into the lower end of the main support body 1 and press it into a cake shape. The pressing is carried out at room temperature, the pressing pressure is 24Mpa, and the pressure is maintained for 10 seconds , pressing the carbon matrix 6 and the hook-shaped reversing bar 3 together;

[0072] E: After the carbon matrix 6 is pressed, the middle filler 4 is loaded, and the gap between the middle filler 4 and the main support 1 is filled wi...

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Abstract

The invention relates to a powder forming type carbon surface commutator and a manufacturing process thereof. The commutator comprises a carbon substrate, a main supporting body, middle filling bodies and hook-shaped commutation bars, wherein the carbon substrate is fixed to the inner side of the lower end of the main supporting body in an embedded mode, the middle filling bodies are arranged in the middle of the main supporting body, a plurality of copper sheets are evenly embedded into the upper end of the main supporting body in the circumferential direction, the hook-shaped commutation bars are erected on the copper sheets respectively, the lower end of each hook-shaped commutation bar is embedded into the carbon substrate, the gaps between the middle filling bodies and the copper sheets are filled with bakelite powder layers, the gaps between the middle filling bodies and the main supporting body are filled with bakelite powder layers, and the carbon substrate is formed in a compressing mode after graphite powder is added to the main supporting body and the hook-shaped commutation bars are wrapped in the carbon substrate at the same time. According to the powder forming type carbon surface commutator, the structure is exquisite, the welding step is omitted in the manufacturing process, cost is reduced, and the problem that the temperature is too high during motor rotor spot welding is solved by means of the assembly of the copper sheets and commutation sheets.

Description

technical field [0001] The invention relates to the field of commutators, in particular to a powder-molded carbon surface commutator and a manufacturing process thereof. Background technique [0002] Due to its excellent corrosion resistance and wear resistance, carbon commutators are widely used in motors that ordinary commutators cannot adapt to. Its structure mainly consists of insulating support, conductor parts and carbon sheets. At present, the fixed connection between the carbon sheet and the conductive parts of the carbon commutator is generally bonded by conductive adhesive, welding process or inlay process, among which conductive adhesive is used more often. [0003] However, the price of conductive glue is very expensive, which leads to high production cost of carbon commutator. In addition, conductive glue has relatively poor binding force, and is easy to be degummed by heat, low heat resistance temperature, short service life, and difficult to operate. There ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R39/04H01R43/06
Inventor 刘锦孙瑞良许刚位赵吉峰史灵虎罗刚李国法
Owner NINGBO SHENGKE COMMUTATOR