A test device for rolling ball bearings suitable for small-angle swing conditions

Abstract

The invention discloses a rolling ball bearing test device applicable to a small angle swinging condition. The rolling ball bearing test device comprises a support seat, a motor, a torque sensor, a transmission shaft, an axial loading device, a return device and a tested bearing. In the test process, the motor moves back and forth in a certain angle range with a set frequency and drives the inner ring of the tested bearing to rotate through the transmission shaft, and in the rotation process, friction torque signals of the bearing of the bearing are captured by the torque sensor. A universal pairing mode is adopted by the axial loading device, and the swinging frequency is set, so that the axial loading device can be applied to long-period or short-period tests of a rolling ball bearing under small swinging conditions with different test conditions (swinging frequencies and axial loads). The return device is arranged on the tail end of the transmission shaft, so that the problem that the rolling ball bearing fails to return to the initial position due to the stop of the test in the debugging or the test process is solved. The rolling ball bearing test device has the advantages that the structure is simple, the size is small, the machining and assembling are convenient, and the rolling ball bearing test device can be used for researching the influences of different rotation speeds, axial loads, swinging angles and swinging frequencies on the operation performance on the rolling ball bearing.

Description

technical field [0001] The invention relates to a test device, in particular to a test device for rolling ball bearings, and belongs to the technical field of rolling bearing testing. Background technique [0002] Space vehicle scanning mechanism, camera and other mechanisms usually reciprocate (swing) within a certain angle range to obtain the position or shape information of a specific observation object. Such mechanisms usually use rolling ball bearings. It is an effective means to study the failure mechanism and performance degradation process of small-angle oscillating bearings by designing bench tests to study its operation process. [0003] The existing small-angle oscillating condition rolling bearing test device adopts a crank transmission mechanism to realize the oscillating motion of the test test bearing, that is, the continuous rotation of the motor is converted into a reciprocating motion at a certain frequency and a certain angle through the crank transmission...

AI Technical Summary

Problems solved by technology

Obviously, the existing small-angle swing rolling bearing test device using the crank transmission mechanism cannot truly simulate the working process of the rolling bearing used in the space scanning mechanism, which in turn affects the validity of the test results

[0004] At the same time, the existing small-angle swing condition rolling bearing test device uses a relatively complicated loading mechanism to load the test bearing, such as a hydraulic loading mechanism, a lever loading mechanism, etc., which makes the structure of the entire test device more complicated, and the difficulty of processing and assembly increases.

[0005] In addition, the test time of the existing small-angle swing condition rolling bearing test device is often in the range of several minutes to several hours, and rarely involves the problem of interruption and restart of the test process, so there is no test bearing position return device

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