Working condition variable reciprocating friction and wear tester based on double-degree-of-freedom flexible hinge

Abstract

The invention discloses a working condition variable reciprocating friction and wear tester based on a double-degree-of-freedom flexible hinge. The tester comprises a worktable, a holder, a supportingframe, an upper test piece, a lower test piece, the double-degree-of-freedom flexible hinge, a loading cylinder, strain gauges I, strain gauges II, a force sensor, a hydraulic loading and control system, a controller and a reciprocating motion assembly. The upper test piece is driven by the reciprocating motion assembly. Positive pressure is applied through utilization of the loading cylinder. Friction is generated between the test pieces. The double-degree-of-freedom flexible hinge is forced to deform through utilization of the friction. Deformation is transformed into electric signals through utilization of the strain gauges I and the strain gauges II. Further the controller computes magnitude of friction force. Magnitude of the positive pressure and liquid pressure difference between two ends of a friction pair between the test pieces are sensed and controlled in real time through utilization of the hydraulic loading and control system, the controller and the force sensor. According to the tester, friction load, friction pair end face liquid pressure difference and friction speed can be dynamically adjusted, friction force under variable working condition can be measured dynamically in real time, and stability is relatively high.

Description

technical field [0001] The invention relates to a friction testing machine, in particular to a reciprocating friction and wear testing machine based on a double-degree-of-freedom flexible hinge. Background technique [0002] The reciprocating friction and wear testing machine is a kind of testing equipment that can be used to test the tribological performance of metal or non-metallic material moving pairs. In the field of tribology, the development of friction testing machine and the theoretical research of tribology are regarded as equally important. Therefore, the development of high Performance friction and wear testing machine is of great significance. [0003] At present, most common friction and wear testing machines are rotating friction and wear testing machines, and there are few reciprocating friction and wear testing machines, and the existing reciprocating friction and wear testing machines mainly have the following problems: [0004] First of all, the friction ...

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a variable working condition reciprocating friction and wear testing machine based on a two-degree-of-freedom flexible hinge, which solves the problem that the traditional reciprocating friction and wear testing machine is diffic

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