Micro-amplitude impact wear test device and test method based on controlled impact energy

Abstract

The invention discloses a micro-impact wear test device based on the control of impact energy, which solves the problem of deficiencies in the current research methods of impact wear. The micro-impact wear test device based on controlled impact energy includes a driving motor, a damping punch driven by the driving motor, a pull rod connected to the damping punch at one end, located at the other end of the pull rod and under the action of the pull rod An energy block capable of linear motion, a magnetic scale arranged on one side of the energy block, a magnetic scale reading head used in conjunction with the magnetic scale, a block clamp connected to the energy block, and a magnetic scale located on the side of the energy block The direction of the end of the energy block and the sample clamping base plate on which the tube clamp is fixed. The invention adopts the design of controlling the energy of the energy block by controlling the speed, realizes the study of micro-impact wear from the perspective of energy, and effectively overcomes the defects of the existing study of micro-impact wear from the perspective of force.

Description

technical field [0001] The invention relates to an impact wear test device, in particular to a test device and a test method for studying micro-impact wear by controlling impact energy. Background technique [0002] Impact wear is the surface wear caused by repeated dynamic contact and impact between two solid surfaces. In all kinds of machinery, many parts are subjected to different degrees of impact wear, and the failure of mechanical parts caused by impact fretting wear widely exists in the fields of electric power, petrochemical, mining machinery, marine machinery, aerospace, etc. Bring bigger energy waste, brought huge loss to people's property security and national economy. Shock loads can cause damage to contact surfaces and, in severe cases, lead to failure of machine components. Of the types of wear failure, impact wear is probably the most materially detrimental and least understood type of wear. In order to study this kind of wear, so far, many types of testing...

AI Technical Summary

Problems solved by technology

At present, the current impact and wear testing machine has a low degree of automation, and it is generally based on force control to study impact wear, and impact wear is a process of energy conversion. Therefore, this type of device cannot comprehensively study impact wear behavior.

In addition, the existing impact wear testing machine based on controlled energy has low degree of automation and low frequency (only a few tenths of Hz), resulting in low impact wear test efficiency

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