End face torsion frictional wear testing machine and method
A technology of torsional friction and wear test, applied in the direction of using mechanical devices, measuring devices, instruments, etc., can solve the problems such as the inability to realize the form of torsional motion, and achieve the effects of simple structure, small impact and convenient operation.
Inactive Publication Date: 2012-09-05
CHINA UNIV OF MINING & TECH
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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
Method used
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Embodiment Construction
[0020] An embodiment of the present invention will be further described below in conjunction with accompanying drawing:
[0021] The end face torsion friction and wear testing machine of the present invention is mainly composed of a transmission device and a pressure loading device. The transmission device includes a servo motor 2 vertically installed on the base 1, and the output shaft of the servo motor 2 is connected with a motor frame 3. The reducer 4, the output shaft of the reducer 4 is connected with the eccentric wheel 5, and the connecting rod 6 is arranged on the eccentric wheel 5; 8 is a fixed frame, the top beam 8 of the fixed frame is connected with a force sensor 9, a thrust ball bearing 10, a fixed piece 11 set in the column 7, a main shaft 12 and a turntable 13, and the turntable 13 is connected with the main shaft 12 with screws, and the turntable 13 is provided with the turntable connection plate 21 that is connected with connecting rod 6, and the turntable c...
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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 pressurizedthrough 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...
Claims
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IPC IPC(8): G01N19/02
Inventor 王世博张德坤毛勇葛世荣
Owner CHINA UNIV OF MINING & TECH