A Reciprocating Tribological Behavior Research Test Bench Isolating Vibration Transmission

Abstract

The invention discloses a reciprocating tribological behavior research test bench for isolating vibration transmission. A lower friction sample is arranged on the base of the test bench, an upper friction sample is arranged above the lower friction sample, and the lower friction sample is connected with the test bench. A driving system is set between the table bases, and the upper friction sample is connected with a loading system. The driving system includes a voice coil motor and a lower fixture installation platform. The bottom of the lower fixture installation platform is fixed with a first air bearing, a voice coil motor and a second An air bearing combination enables frictionless reciprocating motion. Utilizing the non-contact characteristics of compressed air, the interference signal caused by non-interface frictional vibration is isolated or filtered in advance in the test, so as to ensure that the self-excited vibration of the friction pair interface friction is not affected by the vibration interference signal, thereby affecting the interface tribological behavior. To study and analyze the evolution law, and explore the influencing factors of the tribological behavior of the reciprocating interface.

Description

technical field [0001] The invention belongs to the technical field of friction and vibration, and in particular relates to a reciprocating tribological behavior research test bench for isolating vibration transmission. Background technique [0002] When two objects in contact with each other slide relative to each other, under certain conditions, the system will generate strong frictional self-excited vibration and thus produce complex interfacial tribological behavior. This is a very common phenomenon in daily life and engineering. The phenomenon. For example, the moving parts of a precision machine tool may cause cutting chatter of the workpiece or tool during the feed movement, which will aggravate the wear of the workpiece or tool, thereby reducing the accuracy of the machine tool; the braking system of the rail vehicle is unreasonable in the design of the brake disc and the aging of the friction material. In some cases, it may lead to strong friction self-excited vibr...

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Problems solved by technology

[0007] Aiming at the problem that the vibration interference signal and the interface friction self-excited vibration characteristics in the existing tribological behavior research test device cannot be completely separated, the present invention provides a reciprocating tribological behavior research test bench that isolates vibration transmission, and its purpose The purpose is to use non-contact compressed air as an isolation means to isolate the vibration interference signal caused by the non-friction interface in the tribological behavior research test, so as to more accurately reveal the influencing factors of the interface tribological behavior, combined with various problems faced during the service of mechanical equipment Complex environmental conditions for the precise study of the evolution of the tribological behavior of mechanical systems

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