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Commutator polishing device

A commutator and equipment technology, used in grinding/polishing equipment, metal processing equipment, grinding machines, etc., can solve problems such as commutator efficiency limitation, and achieve the effect of improving production efficiency and accurate insulation withstand voltage test structure

Active Publication Date: 2018-06-29
苏州工业园区安固电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen from the above documents that the current mainstream technology is to operate and test polishing and withstand voltage testing as two independent processes, which limits the efficiency of commutator production and needs to be improved.

Method used

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  • Commutator polishing device
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A kind of commutator polishing equipment, refer to figure 1 , which includes a body 1 and a disc-shaped workbench 2 rotatably arranged on the body 1 . The workbench 2 is driven by a stepping motor to realize the intermittent rotation of the workbench 2 .

[0055] refer to figure 1 , in order to improve the safety of the withstand voltage test, the body 1 is provided with a protective cover 11 covering the workbench 2 .

[0056] see figure 2 and image 3 A plurality of station seats 21 are uniformly fixed on the periphery of the worktable 2, and the station seats 21 are provided with sockets 24 for vertically inserting a mandrel 23 made of conductive metal. The commutator 7 is sleeved on the mandrel 23 to realize the placement of the commutator 7 during polishing. A polishing station is also provided on the machine body 1 , and the polishing station includes a polishing wheel 3 and a motor 34 for driving the polishing wheel 3 to rotate. When the commutator 7 moves...

Embodiment 2

[0064] The only difference from Example 1 is that see Figure 7 and Figure 8 , body 1 (see figure 2 ) is provided with a master controller, the master controller is used to control the stepper motor 34 (refer to figure 2 ) Working parameter control, power output of high voltage power supply. To avoid grinding wheel 3 during the start-up phase of the polishing job (see Figure 4 ) live with commutator segment 71 (refer to Figure 4 ) contact to generate electric sparks and set up a protective mechanism for intermittent conduction test voltage. The protection mechanism includes a micro switch 64 arranged in the negative conductive frame 61 , and a relay coupled to the micro switch 64 . The micro switch 64 is fixed on the bottom of the negative conductive frame 61 and faces the conductive sheet 62 . During the process of the station seat 21 pressing the conductive sheet 62 to the inner side of the negative conductive frame 61, the conductive sheet 62 touches the micro sw...

Embodiment 3

[0066] The only difference with embodiment 1 is: see Figure 9 , in order to ensure that during the polishing operation, a comprehensive pressure test is carried out on the outer circumference of the commutator 7 . The polishing wheel 3 is slightly inclined relative to the mandrel 23, and the radial axis of the polishing wheel 3 deviates from the vertical direction by 10°-20°. Through the above structure, during the polishing process of the commutator 7 by the polishing wheel 3 , the polishing wheel 3 simultaneously drives the commutator 7 to rotate around the mandrel 23 .

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Abstract

The invention discloses a commutator polishing device and a use method of the commutator polishing device and belongs to the field of commutator polishing. According to the technical scheme, the commutator polishing device is characterized by comprising a workbench used for bearing commutators, a machine body used for holding the workbench and polishing wheels arranged on the side faces of the workbench, the machine body is further provided with drive pieces used for controlling the workbench and the polishing wheels to rotate correspondingly, the polishing wheels are conductors, the commutator polishing device further comprises a voltage withstanding test system, the voltage withstanding test system comprises positive electrodes electrically connected with the polishing wheels, a negativeelectrode electrically connected with the workbench, an indication piece used for judging whether the positive electrodes and the negative electrode are in breakover or not and a power source used for supplying power to the voltage withstanding test system. By the adoption of the commutator polishing device and the use method of the commutator polishing device, the polishing working procedure andthe voltage withstanding test procedure are effectively integrated, the production efficiency of the commutators is significantly improved, and the dielectric voltage withstanding test precision is also improved.

Description

technical field [0001] The invention relates to the field of polishing equipment, more specifically, it relates to a commutator polishing equipment. Background technique [0002] The commutator is one of the core components of the motor, which is mainly composed of a cylindrical insulating carrier and a conductive commutator segment. The surface finish of the commutator segment and the high-voltage breakdown resistance of the insulating carrier are important items of its technical parameters. Therefore, during the processing of the commutator, it is necessary to go through the wire wheel polishing process to remove surface rust and ensure surface smoothness. Before the commutator leaves the factory, it is necessary to carry out a voltage withstand test on the commutator to ensure that its insulation withstand voltage performance is qualified. [0003] For example, the Chinese invention patent application with application number 201710671573.0 discloses a motor rotor commut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B19/00
Inventor 张云峰
Owner 苏州工业园区安固电器有限公司
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