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Tangential rigidity measuring device for two crossed parabolic cylinders

A measuring device and technology of tangential stiffness, applied in the field of contact mechanics analysis and dynamics research, to achieve the effect of simple structure, easy measurement and convenient operation

Active Publication Date: 2022-02-18
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the research on the tangential stiffness of the random joint surface is based on the fractal theory, but the repeatability and verification of the experiment is a problem.
There is still a lack of research on the tangential stiffness of regular junctions

Method used

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  • Tangential rigidity measuring device for two crossed parabolic cylinders
  • Tangential rigidity measuring device for two crossed parabolic cylinders
  • Tangential rigidity measuring device for two crossed parabolic cylinders

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Embodiment Construction

[0013] Referring to the accompanying drawings in the examples of the invention, the technical solutions in the present invention will be described completely and clearly.

[0014] Referring to the accompanying drawings, the present invention provides a device for measuring the tangential stiffness of two crossed parabolic cylinders: the device includes a rotating platform, an excitation device, a clamping device and a measuring device.

[0015] The entire measuring device is placed on the vibration-damping pad 1, and its purpose is to play a role of vibration-damping during the measurement process. The rotating platform 5 is driven by the geared motor 16 to move up and down and rotate, and adjust the axis crossing angle between the test pieces by rotating the lower test piece, so as to achieve the purpose of measuring the tangential stiffness of the test piece at different axis crossing angles. At the same time, the clamping device and the vibration device are placed on it, wh...

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Abstract

The invention discloses a tangential rigidity measuring device for two crossed parabolic cylinders. The device is composed of a measuring device, a clamping device, an excitation device and a rotating platform. The measuring device plays a role in measuring the force and displacement of a test piece in real time; the clamping device plays a role in fixing the test piece; the excitation device applies an excitation force to the test piece, so that the test piece generates force and displacement; and the rotating platform rotates to change the angle between the two crossed parabolas. The measuring device can detect the real-time tangential rigidity of the two parabolic cylinders, so that the contact characteristics of the parabolic cylinders can be researched conveniently. The device is simple in structure and is easy to operate.

Description

technical field [0001] The invention belongs to the field of contact mechanics analysis and dynamics research, and in particular relates to the mechanical characteristics of a joint surface with a regular shape of a parabolic cylinder under the action of normal and tangential loads, in particular to the measurement of the tangential stiffness of two intersecting parabolic cylinders device. Background technique [0002] The excellent machining performance of a machine tool is closely related to its stiffness characteristics. Insufficient rigidity of the machine tool will cause deformation and vibration during the machining process of the machine tool, which will not only affect the accuracy of the machine tool processing and the surface quality of the workpiece, but also reduce production efficiency and tool durability, and even reduce the service life of the machine tool. Therefore, it is particularly important to study the tangential stiffness of the mechanical interface. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/58
CPCG01N3/58Y02T90/00
Inventor 郭铁能季如国马云飞彭立伟周成
Owner BEIJING UNIV OF TECH
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