Friction and wear tester

Abstract

A friction and wear testing machine, the invention relates to a simulation and detection device of a friction and wear process. It overcomes the defect that the traditional friction and wear test device has certain errors. It includes a turntable, a rotating drive device, a steel ball and a pressure device. It also includes a sample resistance detection circuit. Composed of a computer, the rotary drive device is connected to the lower end of the turntable, the upper end of the steel ball is fixed on the lower end of the pressure device, one output end of the power supply is fixed on the steel ball through a resistor, and the other output end of the power supply is connected to the turntable. The two input ends of the acquisition amplifier circuit are respectively fixed on the steel ball and the turntable, and the output end of the acquisition amplifier circuit is connected to the input end of the computer through a photoelectric isolation circuit and an analog-to-digital conversion circuit. The friction force transmission lever arm can be adjusted by changing the position of the friction force sensor.

Description

technical field [0001] The invention relates to an experimental device, in particular to a simulation and detection device of a friction and wear process. Background technique [0002] In the traditional friction and wear test device, the steel ball is fixed as a friction pair, and its positive pressure on the test piece is determined by the loading weight. The specimen rotates at a constant speed with the turntable and makes sliding friction with the steel ball. The friction force is transmitted to the force sensor through the lever, and the computer collects the data of the friction force and draws the friction coefficient-time curve. This evaluation method is the measurement of mechanical parameters such as friction coefficient, wear amount, etc. under uniform sliding friction, but the actual friction and wear are mostly non-uniform speed processes, and uniform speed measurement cannot better represent the actual friction process. The measurement is not comprehensive, a...

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to provide a kind of friction and wear testing machine, to overcome the defect that there is a certain error in the traditional friction and wear testing device

The present invention proposes a new idea and device for testing and evaluating friction characteristics, which solves the errors of incomplete measurement of friction and wear in traditional technology

Images