Bearing testing machine with adjustable pre-tightening force

Abstract

The invention discloses a bearing testing machine with adjustable pre-tightening force. The bearing testing machine comprises a driving assembly, an axial force applying assembly, a radial force applying assembly, a pre-tightening force adjusting assembly, a data acquisition set and a main shaft. The driving assembly is used for providing driving force for the main shaft and is arranged on one end of the main shaft. A to-be-tested bearing is installed on the main shaft. The axial force applying assembly is used for simulating axial force of axial working conditions of the bearing and is arranged on the other end of the main shaft. The radial force applying assembly is used for simulating radial force of radial working conditions of the bearing, and is arranged on the upper part of the to-be-tested bearing. The pre-tightening force adjusting assembly is used for adjusting the pre-tightening force of the to-be-tested bearing and is installed on the main shaft and on one side of the to-be-tested bearing. The data acquisition assembly is connected with the to-be-tested bearing and used for testing and acquiring temperature and vibration change of the to-be-tested bearing. According to the invention, measurement of performance of temperature rise and vibration under different pre-tightening force can be achieved and the testing machine is advantaged by simple structure, convenient test and highly adaptability.

Description

technical field [0001] The invention belongs to the field of bearing testing equipment, and more specifically relates to a bearing testing machine with adjustable pretightening force. Background technique [0002] Bearings are indispensable key components in various fields of aviation, heavy industry and advanced manufacturing equipment. In order to clearly know the various dynamic characteristics of bearings, it is necessary to carry out simulation tests on bearings. During the test, the bearing preload has an important impact on the dynamic characteristics of the shafting. If the preload is too small, the system’s ability to resist forced vibration and its own vibration will be weak, and the shafting vibration will be large. If the preload If the force is too large, the temperature rise of the bearing will be too high, which will shorten the service life of the bearing and reduce the rotation accuracy of the shaft system. Therefore, it is very important to select the appr...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a bearing testing machine with adjustable preload, which adjusts its key components such as axial force application assembly, radial force application assembly, preload adjustment The structure of the components and their specific setting methods are studied and designed, which can effectively sol

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