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A kind of repair method of motor commutator

A motor commutator and repair method technology, which is applied in the field of aviation equipment, can solve the problems of increasing repair cost and restricting repair cycle, commutator wear diameter becomes smaller, and the finished product of the motor is scrapped, so as to achieve low repair cost and short repair cycle , The effect of simple repair method

Active Publication Date: 2017-05-31
大连长丰实业总公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During use, due to the physical contact between the commutator and the brush, the commutator rotates relative to the brush, causing the wear diameter of the commutator to become smaller, which cannot meet the requirements of the technical standard (the diameter of the commutator is 30±0.1mm ), because there is no repair process method, the finished product of the motor will be scrapped during the repair process, which will increase the repair cost and restrict the repair cycle. For this reason, seek repair process means, increase the repair depth, and improve the inherent reliability of the product

Method used

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  • A kind of repair method of motor commutator

Examples

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Effect test

Embodiment 1

[0036] A method for repairing a motor commutator, the specific steps of the method are as follows:

[0037] (1) car repair

[0038] Grind the worn part of the commutator of the motor commutator to make its surface smooth; then cut the unworn part of the commutator, and the cutting depth is the wear thickness; finally, polish the surface of the motor commutator;

[0039] (2) cleaning

[0040] Cover the surface of the commutator after car repair with a film to expose the commutator piece; then put the commutator into a mixed solution of sodium hydroxide, sodium phosphate and sodium silicate (the concentration of sodium hydroxide is 5g / L , the concentration of sodium phosphate is 20g / L, the concentration of sodium silicate is 3g / L), soak at 80°C for 15min; take the commutator out of the cleaning solution, rinse it with 40°C flowing warm water, and then Rinse in running cold water below 38°C until a layer of water film is formed on the surface of the commutator, the water film n...

Embodiment 2

[0053] A method for repairing a motor commutator, the specific steps of the method are as follows:

[0054] (1) car repair

[0055] Grind the worn part of the commutator of the motor commutator to make its surface smooth; then cut the unworn part of the commutator, and the cutting depth is the wear thickness; finally, polish the surface of the motor commutator;

[0056] (2) cleaning

[0057] Cover the surface of the commutator after car repair with a film to expose the commutator piece; then put the commutator into a mixed solution of sodium hydroxide, sodium phosphate and sodium silicate (the concentration of sodium hydroxide is 15g / L , the concentration of sodium phosphate is 25g / L, the concentration of sodium silicate is 15g / L), soak at 60°C for 20min; take the commutator out of the cleaning solution, rinse it with flowing warm water at 60°C, and then Rinse in running cold water below 38°C until a layer of water film is formed on the surface of the commutator, the water f...

Embodiment 3

[0070] A method for repairing a motor commutator, the specific steps of the method are as follows:

[0071] (1) car repair

[0072] Grind the worn part of the commutator of the motor commutator to make its surface smooth; then cut the unworn part of the commutator, and the cutting depth is the wear thickness; finally, polish the surface of the motor commutator;

[0073] (2) cleaning

[0074] Cover the surface of the commutator after the car repair with a film to expose the commutator piece; then put the commutator into a mixed solution of sodium hydroxide, sodium phosphate and sodium silicate (the concentration of sodium hydroxide is 10g / L , the concentration of sodium phosphate is 23g / L, the concentration of sodium silicate is 4g / L), soak at 70°C for 18min; take the commutator out of the cleaning solution, rinse it with flowing warm water at 50°C, and then Rinse in running cold water below 38°C until a water film is formed on the surface of the commutator, the water film ne...

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Abstract

The invention discloses a repair method for a motor commutator, which belongs to the technical field of aviation equipment. The commutator of the motor is repaired, cleaned, surface activated, electroplated after washing, and a coating layer of 1.5-3 mm is formed on the surface of the commutator; the coating layer is polished to make the thickness of the coating reach 0.5 ~1mm, surface roughness up to 1.6; Finally, slotting is carried out so that the slot width is the same as that of the unworn slot, and the slot depth is not less than 0.5mm; the repair of the commutator is completed. The above-mentioned repair method is simple and easy to implement. The diameter of the repaired commutator is 30±0.1mm, which meets the requirements of the technical standard; compared with that before the wear, the wear resistance of the repaired commutator surface is increased by 5%.

Description

technical field [0001] The invention relates to a repair method for a motor commutator, in particular to a repair method for a BZD-450 motor commutator, and belongs to the technical field of aviation equipment. Background technique [0002] The BZD-450 pump DC motor is a four-pole permanent magnet motor, which is the core component of the power supply of a certain type of aircraft fuel supply system. The armature assembly is installed inside the motor, and the commutator is formed on the armature assembly at one time. The external power supply Power is supplied to the armature assembly through brushes and commutators. During use, due to the physical contact between the commutator and the brush, the commutator rotates relative to the brush, causing the wear diameter of the commutator to become smaller, which cannot meet the requirements of the technical standard (the diameter of the commutator is 30±0.1mm ), because there is no repair process method, the finished product of ...

Claims

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Application Information

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IPC IPC(8): H02K15/00H01R43/14
Inventor 秦素文王涵巨敏赵一庆孙倩闫巍
Owner 大连长丰实业总公司
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