Method for rapidly grinding carbon brush of direct current motor

Abstract

The invention discloses a method for rapidly grinding a carbon brush of a direct current motor, and the method the following steps: a, winding abrasive cloth on a reverser, adjusting the pressure of a compression spring of the carbon brush from the original 1.2-1.6 kg to 1.8-2.2 kg, and initially grinding and forming the carbon brush by using a manual turning gear; b, winding the abrasive cloth on one half of the reverser and causing the other half of the reverser and the carbon brush to be contacted and electrified; adjusting the pressure of the compression spring of the carbon brush from the original 1.2-1.6 kg to 1.8-2.2 kg; using a direct current speed adjustor with the motor to grind the carbon brush at a lower speed; after grinding one half of the carbon brush, winding the abrasive cloth on the other half of the reverser; grinding the other half of the carbon brush; and c, removing the abrasive cloth; using the direct current speed adjustor with the motor to finely grind the carbon brush at a high speed; and after grinding the carbon brush, adjusting the pressure of the compression spring of the carbon brush to the original 1.2-1.6 kg. The method can be used for reducing thetime for grinding the carbon brush by the motor and greatly improving the working efficiency.

Description

Technical field: [0001] The invention relates to the technical field of electromechanical professional motor assembly, in particular to a method for quickly grinding carbon brushes of DC motors. Background technique: [0002] At present, to grind the carbon brushes of the existing DC motors, it is necessary to spread emery cloth on an arc-shaped mold, and grind the carbon brushes one by one. Wrap the abrasive cloth on it, turn it, and grind the carbon brush into shape, remove the gauze, and then use a DC welding machine to drive the motor to run without load to grind the carbon brush; there are the following disadvantages: 1. Because the carbon brush is ground with normal pressure, the compression spring The pressure is relatively low, and the friction between the carbon brush and the commutator is relatively small, resulting in slow grinding speed and low efficiency; 2. Since the DC motor is driven by a DC welding machine, the motor speed is low, which also causes the carbo...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a method for fast grinding of carbon brushes of DC motors, which mainly solves the problems of slow grinding speed of carbon brushes of DC motors, long grinding time of carbon brushes and low efficiency.