Disc friction self-excited vibration test bench

Abstract

The invention discloses a disc-type friction self-exciting vibration experiment table, and the experiment table comprises a pedestal part, a support part, a drive part, and an excitation part. The pedestal part comprises a bottom plate and adjustment legs. The support part comprises a support, an aluminum profile truss and a stepped shaft. The adjustment legs, the support and the aluminum profiletruss are installed on the bottom plate, and the bottom plate is enabled to be horizontal through the adjustment of the height of the adjustment legs. The drive part comprises a servo driver, a servomotor, and a speed reducer. An output shaft of the speed reducer is connected with the lower end of the stepped shaft through a shaft coupler. The servo motor and the servo driver are connected through a power line and a coder signal line. The excitation part comprises a disc, a mass block, an elastic plate, and a smooth guide rod. A big end of the stepped shaft is welded at the center of the bottom surface of a disc, and is installed on the support through a bearing. The mass block is placed on the disc, and an elastic plate is fixed on the aluminum profile truss from one side of the mass block, and the lower end of the elastic plate is connected to a side surface of the mass block through a spring. The other side of the mass block enables the smooth guide rod to be fixed on the aluminumprofile truss through an L-shaped part, and the smooth guide rod is enabled to sequentially pass through the L-shaped part, the mass block, the spring and the elastic plate.

Description

technical field [0001] The invention relates to an excitation device for self-excited vibration, in particular to an excitation device for generating frictional self-excited vibration based on the rotation of a disk—a disk-type frictional self-excited vibration test bench. Background technique [0002] Friction-induced vibration phenomena widely exist in engineering fields and daily life, and affect the performance of mechanical systems in various ways. Friction will not only cause surface wear and fatigue damage of mechanical parts, but also generate self-excited vibration and corresponding noise, and the vibration problem caused by friction will usually aggravate the wear of two contacting mechanical parts, thereby reducing the precision and quality of the workpiece , resulting in early scrapping of parts and components, and also reducing the accuracy of the control system, which has a negative impact on production and living environments. The interaction between friction...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a kind of mass block when the servo motor drives the disc to rotate at a constant speed, aiming at the defects of the belt transmission instability and the worktable movement stroke being extremely limited and its moving speed not constant in the prior art. An excitation device based on disk rotation to generate frictional self-excited vibrations that can generate constant frictional self-excited vibrations—disc-type frictional self-excited vibration test bench

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