High-speed rolling contact fatigue testing machine

A technology of contact fatigue and high-speed rolling, which is applied in the field of testing machines, can solve the problems that affect the accuracy of the test results of the test progress, affect the test results of the friction torque of the sample, and cannot realize continuous loading. Small, low-noise effect
CN103344553AInactive Publication Date: 2013-10-09YANSHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YANSHAN UNIV
Publication Date
2013-10-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a high-speed rolling contact fatigue testing machine. The high-speed rolling contact fatigue testing machine is characterized in that a driving pulley (6) arranged on the upper end of the output shaft of a servo motor (9) is in transmission connection with a driven pulley (8) arranged on the upper end of a static pressure main shaft (5), and the static pressure main shaft (5) is fixed on an upper beam (30) arranged on a rack (3); a servo electric cylinder (2) is connected with a pressure sensor (36) fixed on the lower surface of a moving beam through a connecting piece (15) of the pressure sensor; the upper end of a hydraulic supporting platform (4) is fixed on a sphere base lower part (18), a lower test specimen base (21) is connected with a sphere base upper part (20), and the lower test specimen base (21) is connected with a test specimen base ring (45) in a clearance fit mode. The high-speed rolling contact fatigue testing machine provided by the invention has the advantages that the rolling contact of a bearing material under a high speed and heavy load working condition is simulated, the key parameter of rolling contact fatigue of a testing material can realize accurate detection, and finally, the data support is provided for evaluating the rolling contact fatigue property of the bearing material.
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Description

technical field

[0001] The invention relates to a testing machine for evaluating rolling contact fatigue performance of bearing materials under high-speed and heavy-load working conditions. Background technique

[0002] As a widely used mechanical basic part, the quality of rolling bearings directly affects the performance of the whole machine. At present, problems such as fatigue pitting, plastic deformation and wear of bearings restrict the development of high-speed and heavy-duty machinery. It is imperative to develop high-performance bearing materials to meet the increasingly high-speed requirements of rotating parts. Contact fatigue is one of the main failure modes of rolling bearings, and it has the characteristics of low stress and no macroscopic deformation. Contact fatigue is more dangerous than static damage. Simulating the actual working conditions of bearings, accurately predicting the bearing capacity and life of bearings under specific conditions, and then gi...

Claims

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