End face torsion frictional wear testing machine and method

Abstract

The invention discloses an end face torsion frictional wear testing machine and an end face torsion frictional wear testing method. The testing machine comprises a transmission device and a pressure loading device, wherein the transmission device comprises a servo motor, a speed reducer, an eccentric wheel and a connecting rod; and the pressure loading device comprises a force sensor, a thrust ball bearing, a fixing piece, a spindle, a turntable, a turntable connecting rod, a tray, a torque sensor, a lifting shaft, a sliding sleeve and a hydraulic cylinder. A test piece is axially pressurized through the hydraulic cylinder, a connecting rod transmission mechanism drives the test piece to perform frictional torsion, a frictional torque value is measured through the torque sensor, and a positive pressure value is measured through the force sensor so as to obtain a friction coefficient. An end-face contact torsion frictional wear test under different working conditions can be simulated by setting different positive pressures, torsion frequencies and the like, and the frictional torque is accurately measured; and the loading is stable and accurate, the impact is low, and dynamic loading can be realized. Moreover, the machine is simple in structure, convenient to operate and good in testing effect.

Description

technical field [0001] The invention relates to a friction and wear testing machine and method, in particular to an end face torsion friction and wear testing machine and method suitable for performance testing of friction pairs under torsion friction working conditions. Background technique [0002] When two objects in contact with each other undergo relative motion or tend to move relative to each other under the action of external force P, the tangential resistance F generated on the contact surface is called friction force, and this resistance phenomenon is called friction. According to the motion form of the kinematic pair, it can be divided into sliding friction and rolling friction. In the laboratory, there are many testing machines used to study sliding friction, and the main forms are ring-block type, pin-disk type, end-face friction type, fretting wear type, etc. Torsional friction refers to the relative motion of the reciprocating rotation of the contact interfac...

AI Technical Summary

Problems solved by technology

However, most of these testing machines are single wear testing machines. For example, CETR testing machines can realize reciprocating linear motion and rotation with different amplitudes, but cannot realize twisting motion.

At present, there is no torsional friction and wear testing machine that can be used to achieve end-face contact

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