Temperature-rise test device and method for sealed double-row angular contact ball bearings

Abstract

The invention belongs to the technical field of bearing test equipment, and relates to a temperature-rise test device and method for sealed double-row angular contact ball bearings. A main body of the temperature-rise test device structurally comprises a driving motor, a driving belt wheel, a small belt wheel, a rotation speed sensor, a driving shaft, a control system, a main shaft, a sleeve, an iron sheet, a test bearing, a stress and measurement device, a locking nut, a withdrawal nut, an adapter sleeve, a body, a driving belt, a shell and a stud. The temperature-rise test method comprises the following four steps of: setting test parameters, and starting the test device; determining bearing temperature and environment temperature at initial rotation speed; measuring the bearing temperature and the environment temperature at rated rotation speed; and disassembling the bearing, and performing statistical computation on the measured temperature. The device and the method are applicable to a temperature-rise test on double-row angular contact ball bearings. A test result can be reproduced, and the consistency of test data is high; and the device is simple in structure, principle is reliable, test cost is low, the test result is accurate, test condition is easily controllable, and environmental friendliness can be achieved.

Description

Technical field: [0001] The invention belongs to the technical field of bearing test equipment, and relates to a temperature rise test device and method for sealed double-row angular contact ball bearings, which are used for temperature rise tests of sealed double-row angular contact ball bearings, and can realize test data consistency and repeatability and reliability. Background technique: [0002] Double-row angular contact ball bearings can withstand large radial and axial combined loads and moment loads, limit the axial displacement of the shaft in both directions, and are mainly used in components that limit the bidirectional axial displacement of the shaft and the housing; Compared with ball bearings, double row angular contact ball bearings have better rigidity and can withstand overturning moments. The bearings are non-separable and are suitable for applications with high rigidity requirements. They are often used in machine tools, machinery, automobiles and other f...

AI Technical Summary

Problems solved by technology

For the temperature rise test of sealed deep groove ball bearings, there are relatively mature test devices and test methods. The industry standard JB / T8571-2008 "Test Procedures for Dustproof, Grease Leakage, and Temperature Rise Performance of Sealed Deep Groove Ball Bearings for Rolling Bearings" The temperature rise test method for sealed deep groove ball bearings is specified, but the standard only lists the test requirements and acceptance criteria, without specifying the test device, and the temperature rise test device and method for sealed deep groove ball bearings are not suitable for sealing double Research on temperature rise of row angular contact ball bearings

[0003] The bearing temperature rise test device in the prior art has the following disadvantages when performing the temperature rise test of the sealed double-row angular contact ball bearing: first, it cannot make the two rows of steel balls bear the force evenly, and it always appears that the force of the steel balls in one row is large In the case of a row of steel balls with small force, inconsistent bearing force will cause uneven temperature rise, resulting in inaccurate test results, and inconsistent force of two rows of steel balls at high speed will also cause inconsistency in the movement of steel balls. Additional phenomena such as slipping and deflection will have an impact on the temperature rise of the bearing; second, in terms of the installation of the test bearing, the current test plan is to use clearance fit between the bearing outer ring and the fixed shell, and the bearing inner ring and the installation core The gap fit is also used between the shafts. Although this scheme makes the installation and disassembly of the test device more convenient, the disadvantage is that there will be creeping phenomenon between the rotating inner ring and the installation mandrel, which will cause the test bearing to slip and generate a lot of heat, affecting the bearing. Therefore, it is of good practical significance and economic value to seek to design a temperature rise test device and method for sealed double row angular contact ball bearings that can overcome the shortcomings of inconsistent test data and poor reliability.

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