A compound motion module to realize unidirectional linear wear of carbon brushes

Abstract

The invention relates to a compound motion module capable of achieving carbon brush one-way line abrasion. A reciprocal rectilinear motion module and a feed movement implementation module are driven by one cam wheel, the reciprocal rectilinear motion implementation module comprises a first connecting rod and a sliding block device, one end of a first connecting rod connecting block is hinged with the first connecting rod, the other end of the first connecting rod connecting block is fixed on a linear guide rail, the linear guide rail can be installed on fixed guide rail seats vertically in a sliding mode, and the linear guide rail seats are arranged at two ends of the linear guide rail and fixed on a machine frame. A cam roller is hinged with one end of a second connecting rod and pressed on the edge of the cam roller, the other end of the second connecting rod is hinged on the machine frame, one end of a third connecting rod is hinged with the middle of the second connecting rod, the other end of the third connecting rod is hinged with a carbon brush clamping device fixing plate, and two ends of the carbon brush clamping device fixing plate are fixed on the machine frame through fixing plate springs. The compound motion module is reasonable in structure, reliable in operation, capable of changing positive pressure of carbon brush abrasion, and meanwhile a plurality of samples can be taken, and influences of accidental errors in a test are avoided.

Description

technical field [0001] The invention relates to the field of friction and wear testing machines, in particular to a testing machine for wear analysis of carbon brushes, in particular to a composite motion module for realizing unidirectional linear wear of carbon brushes. Background technique [0002] With the continuous development of automated production, in addition to being widely used in motors, carbon brushes are also used more and more in other occasions. Frequent power on and off, positive pressure and various inevitable lubrication in the working environment will cause wear to the carbon brush. In some special occasions, the wear speed of the carbon brush is far beyond imagination, which affects the production efficiency. [0003] The existing motion realization forms of the testing machine for carbon brush wear mainly include rotary type and reciprocating type. The reciprocating type cannot realize the one-way wear of the carbon brush. Simulate the wear condition o...

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Problems solved by technology

[0004] In order to overcome the deficiency that the existing carbon brush wear testing machine cannot accurately simulate the wear condition of the one-way linear motion carbon brush, the present invention proposes a compound motion module for realizing the one-way linear wear of the carbon brush, which has a reasonable structure and reliable operation. The positive pressure of carbon brush wear can be flexibly changed, and multiple samples can be taken at the same time, which can avoid the influence of accidental errors in the test

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