Rolling contact fatigue testing machine of roller component

Abstract

The invention relates to a rolling contact fatigue testing machine of a roller component, which comprises an air spindle, a base, left and right idle pulleys, swing arms, a double-purpose cylinder, an automatic pneumatic control system and the like; the two swing arms are vertically arranged in the vertical plane of the base through a bearing; a large-diameter idle pulley is installed on the upper end of each swing arm; the lower end of each swing arm is connected with the cylinder and a force sensor through a spherical coupler at a rod end; the pressure of the cylinder can be changed according to a given program through a pressure adjusting system under the control of a computer and then is applied on the roller component through the level actions of the swing arms; and the roller component rotates at high speed along the air spindle through a high-precision spring fixture. The rolling contact fatigue testing machine disclosed by the invention is simple in structure, convenient for operation and strong in practicability and is capable of completing a fatigue effect experiment in a determined area on the surface of a test piece with variable load under a given cycle period rapidly and effectively in a low-cost manner.

Description

technical field [0001] The invention is a roller element rolling contact fatigue testing machine, which belongs to the technical field of composition and structure of mechanical products. This fatigue testing machine is used for rolling contact fatigue testing of high-strength material roller elements. technical background [0002] Rolling contact fatigue performance is an important technical index for evaluating the performance of materials used in key components such as bearings and transmission gears. According to the structure and motion form of bearings and gears, the rolling contact fatigue test mainly includes thrust plate rolling contact fatigue test, ball rolling contact fatigue test and roller element rolling contact fatigue test. At present, there are low-speed, low-load ball rolling contact fatigue testing machines and thrust plate rolling contact fatigue testing machines in China, but high-speed, variable high-load rolling contact fatigue testing machines for r...

AI Technical Summary

Problems solved by technology

At present, there are low-speed, low-load ball rolling contact fatigue testing machines and thrust plate rolling contact fatigue testing machines in China, but rolling contact fatigue testing machines for high-speed, variable high-load roller elements have not yet been developed.

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