A cross rule topography column reciprocating micro-tribological wear test bed device

By designing a reciprocating fretting wear test bench with cross-shaped regular columnar structure, the problem of difficulty in evaluating fretting wear on regularly machined surfaces was solved, enabling high-precision wear performance analysis and machine tool wear mechanism research, and supporting the wear performance evaluation of high-end machine tools.

CN115561105BActive Publication Date: 2026-07-21BEIJING UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING UNIV OF TECH
Filing Date
2022-10-07
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing technologies are insufficient for effectively studying and evaluating the wear performance of regularly machined surfaces in fretting wear, especially on machine tool mating surfaces, leading to energy waste and decreased machine tool accuracy.

Method used

A cross-shaped column reciprocating fretting wear test bench device was designed, including a rotating platform, a specimen clamping device, a force loading device, a reciprocating drive device, a sensor device, and a data acquisition and processing system. High-precision fretting control and observation of various wear performance indicators are achieved through closed-loop feedback adjustment.

Benefits of technology

It achieves high-precision simulation and evaluation of fretting wear, enabling the study of wear characteristics under different conditions, providing accurate wear performance analysis, and supporting the study of wear mechanisms in high-end machine tools.

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Abstract

The application discloses a cross rule morphology column reciprocating type fretting wear test bed device. The device is composed of a rotating base, a test piece clamping device, a force loading device, a reciprocating driving device, a sensor device, a friction interface observation device and a data acquisition and processing system. The rotating platform is convenient for studying the influence of different cross angles on wear. The clamping device for fixing the upper and lower test pieces is simple in structure and reliable in clamping. The upper and lower test pieces are pushed into contact by a servo electric cylinder, and the normal force is uniformly applied to the test pieces. The reciprocating driving device comprises a power source component, a linear guide rail and a sliding block. A laser high-precision displacement sensor is used for tangential fretting displacement detection, and a force sensor is used for detecting friction force and normal pressure. A three-dimensional morphology instrument and a three-dimensional full-field strain test analyzer adopt a camera module to observe the wear interface, so that wear performance evaluation parameters are obtained. The designed test bed device has the characteristics of high fretting precision and variable contact angle.
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