Vacuum pump motor output shaft installation device

Abstract

The invention relates to the technical field of motor machining, in particular to a mounting device of an output shaft of a vacuum pump motor. The mounting device comprises a rack; and a lamination alignment type press-fitting mechanism and a mounting seat coaxial mounting mechanism are mounted on the rack. according to the scheme, in order to solve the problems that the quality of the output shaft is affected, the percent of pass of press-fitting is reduced, relatively large friction can be produced between the mounting seat and the output shaft and scratches can be produced on the surface ofthe output shaft after lamination press-fitting in the prior art, the lamination alignment type press-fitting mechanism is arranged, so that the press-fitting difficulty is greatly reduced, the probability of shaft deformation and shaft jumping of the output shaft is further reduced, and the yield of press-fitting is increased; a polished shaft is used as the output shaft and is not required to be machined into a stepped shaft, and then the product cost is reduced; and the mounting seat coaxial mounting mechanism is arranged, so that scratches can be prevented from being produced on the output shaft, and damage to the output shaft is prevented.

Description

technical field [0001] The invention relates to the technical field of motor processing, and specifically discloses a vacuum pump motor output shaft installation device. Background technique [0002] The middle section of the output shaft of the vacuum pump motor is connected with laminations 17, and the two ends of the output shaft are connected with other parts through bearings. The output shaft in the prior art is a stepped shaft 18 (as figure 1 shown), the lamination 17 needs to be press-fitted into the stepped shaft 18 by a press-fitting device; the press-fitting device of the lamination 17 includes an upper mold base, a lower mold base, a guide post and a guide sleeve, and the guide post connects the upper die base and the The lower die base, the upper die base can move up and down along the guide post, the guide sleeve fits on the guide post, the guide sleeve is located between the upper die base and the lower die base, and the lower die base is provided with a moldi...

AI Technical Summary

Problems solved by technology

[0005] 1. Because the lamination 17 must ensure an interference fit with the output shaft after press-fitting, during the press-fitting process, as the length of the lamination 17 is pressed into the output shaft increases, coupled with the interference fit, the output shaft of the lamination 17 contacts The frictional force generated during the process is constantly increasing, which hinders the movement of the lamination 17 relative to the output shaft. At this time, the pressing block of the pressing device is still continuously applying pressure to the lamination 17, and the lamination 17 cannot move relative to the output shaft. As a result, the shaft deformation and shaft runout of the output shaft become larger, which affects the quality of the output shaft, causes the lamination 17 to fail in press-fitting, and reduces the qualified rate of press-fitting

[0006] 2. If the lamination 17 is divided into two parts, the press-fitting is carried out twice to reduce the friction between the lamination 17 and the output shaft during each press-fitting, thereby reducing the axial friction of the output shaft after the lamination 17 is pressed. The probability of deformation and shaft runout becomes larger. However, when the existing device presses the second lamination 17, it cannot guarantee the alignment of the two laminations 17, which leads to the failure of pressing the lamination 17.

[0007] In addition, after the lamination 17 is installed on the output shaft, the output shaft needs to be installed on the vacuum pump motor. During the installation process, the output shaft needs to be fixed on the vacuum pump motor through the mounting seat. In the prior art, generally The mounting base is installed on the motor by hand. The above operation has the following problems: When installing the mounting base on the motor, the operator cannot accurately align the mounting hole on the mounting base with the output shaft. There will be a large friction between the wall of the installation hole of the seat and the output shaft, and scratches will be generated on the surface of the output shaft, which will cause damage to the output shaft and need to be replaced

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