Horizontal movement device for reciprocating corrosion fretting abrasion testing machine

Abstract

The invention discloses a horizontal movement device for a reciprocating corrosion fretting abrasion testing machine. The device comprises a driving plate, a driving rod, a linear bearing seat and a slider-crank mechanism and a driving motor; the driving plate is a horizontal L-shaped structure, a bending end is fixedly connected with one end of the driving rod, the driving rod is connected to a support plate through the linear bearing seat, and the other end of the driving rod is connected to a motor shaft of the driving motor through the slider-crank mechanism; the driving motor is fixedly connected to the support plate, the support plate is fixedly connected to a cushion block, and the driving plate is fixedly connected to the sliding block of the horizontal linear guide rail along witha lower clamp. The transverse movement of a specimen is realized by adopting motor driving, the slider-crank mechanism is used for driving the device, the fretting precision is high, the load is stable, the movement back-and-forth frequency is adjustable (the frequency is controlled by controlling a rotating speed of the motor), the equipment volume is small, the specimen directional movement isrealized by adopting the linear guide rail, the guidance precision is high, the driving motor rotates to drive the driving plate to transversely move, the movement is convenient and fast, and the reaction is quick and sensitive.

Description

technical field [0001] The invention relates to a lateral movement device for a reciprocating corrosion fretting wear tester, belonging to the technical field of friction and wear testers. Background technique [0002] Fretting wear refers to the frictional movement that occurs between contact surfaces with extremely small displacement amplitudes. Generally, the displacement amplitude is in the range of microns, and it is caused by fatigue loads, mechanical vibrations, electromagnetic vibrations, or thermal cycles under approximately static working conditions. Friction is fretting friction. Its movement is concealed, but its harm is obvious. Fretting will cause damage to the contact surface of the material, generate cracks, and even lead to the failure of the entire system. Studies by relevant research institutions have shown that about 30%-50% of the world's energy is consumed in various forms every year on friction, resulting in huge economic losses, and about 80% of mecha...

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Problems solved by technology

[0003] "A Small Displacement Reciprocating Rolling Friction and Wear Tester" disclosed in Chinese patent (Notice No. CN201689023U) uses a hydraulic servo system as the driving source for micro-motion. The advantages of this driving method are large driving force, wide range of amplitude and frequency variation , but its low precision, complex technology, easy oil leakage in the hydraulic system, and large equipment volume cannot be applied to the loading of high-precision small samples and small loads

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