Electric spindle reliability test device based on synchronous hydraulic cylinder drive loading

Abstract

The invention discloses an electric spindle reliability test device based on synchronous hydraulic cylinder drive loading. The device comprises a main shaft clamping part, a loading unit part, a loading unit supporting part, a main radial loading part, an axial loading part and a torque loading part, the main shaft clamping part comprises a dowel bar; the loading unit part comprises a loading unitmain body and spherical grooves from No.1 to No.5; the loading unit supporting part comprises a first loading head; the main radial loading part comprises a No.2 loading head; the axial loading partcomprises loading heads from No.3 to No.5; and the torque loading part comprises a hydraulic pump and a torque transmission testing device. the electric spindle reliability test device is suitable fortwo common spindles in the reliability test of the numerically-controlled machine tool spindle, the test cost is reduced, and the device has universality; and axial, radial and torque loading can becarried out in a sequential, and separate and synchronous loading manners are performed, which is closer to the actual working condition of the main shaft, so that the steps of disassembling and assembling the test bed due to different loading are reduced, and the time is saved.

Description

technical field [0001] The present invention relates to a loading method applied to the spindle reliability test system of CNC machine tools. The method of synchronous loading specifically relates to a reliability test device for an electric spindle driven by a synchronous hydraulic cylinder. Background technique [0002] "The level of CNC machine tools is an important symbol of a country's mechanization and modernization, and it represents a country's scientific level, innovation ability and comprehensive ability. China will become a major producer of CNC machine tools." It comes from the support of the country and its own CNC machine tools in machinery manufacturing The basic role in the industry, the stability of CNC machine tools is of strategic significance to the development of the national machinery industry. Among them, the spindle seat is an important part of CNC machine tools, and its reliability has an important impact on the machining accuracy and development of...

AI Technical Summary

Problems solved by technology

[0006] At present, most of the loading methods used by existing test devices can only achieve single loading or both loading, and few devices can realize simultaneous loading of the three, and the eccentricity caused by the loading process is not considered when hydraulic loading is used. , Torque records often use a dynamometer with a certain power to control the torque. Due to the limitation of the power of the dynamometer, the application range of the test bench is also limited to a certain extent.

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