Device and method for correcting motor rotor shaft

Abstract

The invention discloses a motor rotor shaft correction apparatus and method. The apparatus comprises a chassis, a front V-shaped block, a rear V-shaped block, a front support, rear support, a front V-shaped bracket, and a rear V-shaped bracket. For the ease of measurements, a front bearing guard of the motor rotor is placed onto the frontV-shaped block, the rear bearing guard is placed onto the rearV-shaped block, the shaft jitter value and position are measured by using a dial indicator; in order to perform correction on the shaft, the frontV-shaped bracket is lifted to support the front correction section, the rear V-shaped bracket is lifted to support the rear correction section, the front correction section and the rear correction section are knocked through a high-hardness blunt tool to realize the purpose of shaft correction, compared with the prior art, the apparatus and method of the invention has advantages of easy and convenient measurement, adjustment and correction, stability and reliability, and the recovery phenomenon does not occur on the corrected shaft.

Description

Technical field [0001] The invention relates to a radial runout correction device of a motor output shaft, belonging to the technical field of tooling and process methods in motor production. Background technique [0002] In the existing motor production process, the motor rotor is an important process in the motor manufacturing process, especially the output shaft of the motor rotor will be cold pressed or hot sleeved during the assembly process because the shaft and the rotor core are assembled during the production process. The slight deformation and bending produced by the method do not meet the design requirements of the radial runout of the output shaft end, so that when the motor product is used, the connected equipment will generate vibration and other unstable factors during operation, which will increase the vibration and noise of the complete set of equipment. It is necessary to measure and correct the radial runout of the motor rotor’s output shaft, but the current me...

AI Technical Summary

Problems solved by technology

[0002] In the existing motor production process, the motor rotor is an important process in the motor manufacturing process, especially in the production process of the output shaft of the motor rotor, because the shaft and the rotor core are assembled by cold pressing or heat sleeve, etc. The slight deformation and bending produced by the method cannot meet the design requirements of the radial runout of the output shaft end, so that when the motor product is used, the equipment connected to it will generate vibration and other unstable factors during operation, resulting in increased vibration and noise of the complete set of equipment. Large size, reduced service life and other disadvantages, so the radial runout of the motor rotor shaft must be measured and corrected, but the current common shaft calibration method is to use the final shaft method, that is, to support both ends of the shaft to be calibrated, and then in Pressurization and bending deformation are carried out between the support ends. If the pressure is too high, reverse bending will occur. If the pressure is too small, the correction effect will not be achieved, making it difficult to control the correction value, and it is time-consuming. Even if the axis is corrected According to the requirements, due to the stress on the shaft during cold bending, after the long-term operation of the motor or the action of external forces such as vibration, the original corrected shaft will recover, which brings hidden dangers to the reliability of the motor operation.

Images