On-line direct-current motor grinder

Abstract

The invention discloses an on-line direct-current motor grinder which comprises a grinder body and a fixing device, wherein the fixing device is arranged at one side of the grinder body; the grinder body comprises a bracket, a regulation screw, a regulation lead screw and a sharpening stone, wherein the bracket comprises an upper bracket and a lower bracket; the sharpening stone is arranged in the lower bracket; the bottom of the sharpening stone extends out of the lower bracket; one end of the regulation screw is fixedly connected with the sharpening stone; the other end of the regulation screw penetrates out of the lower bracket and the upper bracket respectively and is fixed by the regulation screw; the fixing device comprises a fastening square block and a fixing screw, wherein the fastening square block is arranged at one side of the lower bracket; one end of the fixing screw is connected with the fastening square block; and the other end of the fastening square block is connected with the brush rod of an electric brush through a nut. According to the on-line direct-current motor grinder, the deficiency that the polishing of the male and female of a commutator can be subjected to offline processing is overcome. The on-line direct-current motor grinder has the advantages of good grinding effect, short trouble shooting time, convenience in disassembling and the like, can be used and installed for multiple times and is suitable for polishing the male and female of majority of direct-current motor commutators.

Description

technical field [0001] The invention relates to a grinder, in particular to an online DC motor grinder. Background technique [0002] The uneven surface of the commutator of the DC motor is a common fault of the DC motor. This fault is due to the long-term online operation of the DC motor, and the friction on the surface of the commutator is uneven, which will cause the surface of the commutator to be uneven, black spots or ablation. If this situation is not dealt with in time, once the situation worsens, it will cause the brush to vibrate, and the spark will not commutate well. Directly affect the normal use of the DC motor. [0003] When the arc surface of the DC motor commutator is worn or scorched, the traditional method is to repair the DC motor off-line, and use fine sandpaper or other grinding equipment to smooth the surface of the commutator. The traditional grinding method takes a long time to troubleshoot, and the maintenance cost is relatively high, and the DC ...

AI Technical Summary

Problems solved by technology

This fault is due to the long-term online operation of the DC motor, and the friction on the surface of the commutator is uneven, which will cause the surface of the commutator to be uneven, black spots or ablation.

If this situation is not dealt with in time, once the situation worsens, it will cause the brush to vibrate, and the spark will not commutate well. Directly affect the normal use of DC motor

[0003] When the arc surface of the DC motor commutator is worn or scorched, the traditional method is to repair the DC motor off-line, and use fine sandpaper or other grinding equipment to smooth the surface of the commutator. The traditional grinding method takes a long time to troubleshoot, and the maintenance cost is relatively high, and the DC motor cannot be used online during the grinding process

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