A test device for rolling bearing rotation accuracy

Abstract

A testing device for rotation precision of a rolling bearing comprises a reference spindle arranged on a supporting table top. The reference spindle is provided with a core shaft. The upper part of the core shaft is located on the inner side of a bearing cover. The outer circumference face of the upper part of the core shaft and the inner circumferential face of the bearing cover are connected through a to-be-tested bearing. A displacement sensor support is arranged on the upper end face of the reference spindle. The core shaft is located in the inner side of the displacement sensor support. A two-freedom-degree flexible hinge mechanism is arranged above the displacement sensor support through a flexible hinge fixing plate. The bearing cover is fixed to the center of the bottom end face of the two-freedom-degree flexible hinge mechanism. A capacitance displacement sensor used for measuring the horizontal displacement of the bearing cover is arranged on the outer circumferential face, corresponding to the bearing cover, of the displacement sensor support. A vertical force applying and measuring device used for applying pre-tightening force to the to-be-tested bearing and meanwhile measuring the pre-tightening force is arranged on the upper end face of the two-freedom-degree flexible hinge mechanism. By means of the testing device, under the conditions of different degrees of bearing pre-tightening force, different rotation speeds and different loads, the rotation precision of the bearing is tested, and the test data are analyzed.

Description

technical field [0001] The invention relates to a bearing testing device. In particular, it relates to a test device for the rotational accuracy of rolling bearings. Background technique [0002] Rolling bearing is one of the important parts of rotary mechanical equipment, and its performance directly affects the performance of the equipment. Studying the changing rules of factors such as the rotation accuracy of the spindle and the operating environment, and determining the optimal preload of the spindle under different working conditions will help improve the machining accuracy of the spindle. In order to meet the requirements of high speed and high precision, the requirements for bearing precision are gradually increasing. However, in order to study bearing accuracy, its accuracy must first be tested. If the bearing is tested in the spindle, the test result will be affected by other error factors from the spindle, such as the roundness error of the test ball, the eccen...

AI Technical Summary

Problems solved by technology

At present, most of the bearing testing devices have complex structures, low testing accuracy, and little practical application value.

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