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Embedded measuring method for contact press of annular friction pair

An embedded measurement and contact pressure technology, applied in the direction of measurement force, measurement device, instrument, etc., can solve the problems that the pressure distribution of the contact surface cannot be obtained realistically, and the boundary conditions of the friction pair pressure cannot be measured. The effect of low test cost and simple measurement method

Inactive Publication Date: 2014-03-12
BEIHANG UNIV
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Problems solved by technology

[0004] The technical problem of the present invention is to solve the problem that the boundary conditions of friction pair pressure cannot be measured in the prior art, and provide a method for dynamic contact pressure of friction pair Measurement method, this method effectively solves the difficulty that the current contact surface pressure distribution of the friction pair cannot be truly obtained, and realizes the static and dynamic test of the contact pressure without changing the contact state of the friction pair surface. At the same time, it provides a theoretical basis for the dynamic design of friction pairs

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  • Embedded measuring method for contact press of annular friction pair
  • Embedded measuring method for contact press of annular friction pair
  • Embedded measuring method for contact press of annular friction pair

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Embodiment Construction

[0030] The implementation of the method of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] Both theoretical research and experimental process have found that the Cu-based powder metallurgy friction pair has the characteristics of uneven contact pressure distribution (especially in the radial direction) during the bonding process and bonding state. This characteristic is due to the characteristics of the pressurized structure and the characteristics of the contact surface jointly decided. The invention adopts the embedded blind hole measurement method to realize the measurement of the static and dynamic contact pressure of the friction pair.

[0032] In order to test the contact pressure of the friction pair, a number of blind holes are processed on the non-contact surface of the dual steel sheet. The size and distribution characteristics of the blind holes need to be determined according to the size of the frictio...

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Abstract

The invention discloses an embedded measuring method for the contact press of an annular friction pair. The method comprises the following steps of firstly analyzing the processing process requirement and features of a bearing structure of the friction pair, then determining the distribution and dimension of blind holes in a pairing piece according to the features of the bearing structure, and finally performing strain measurement on the blind holes to obtain the contact press of the friction pair in the region. According to the method, the static and dynamic measurement of the contact press of the friction pair can be realized, and the static and dynamic measurement of the contact press is realized on the premise of not changing the surface contact state of the friction pair, so that the precise press boundary condition of the friction pair is ensured, and at the same time, a theoretical basis is provided for dynamic design of the friction pair.

Description

technical field [0001] The invention discloses an embedded measuring method for contact pressure of an annular friction pair, which belongs to the technical field of pressure measurement of a clutch friction pair contact surface in the field of crawler vehicle transmission. Background technique [0002] High energy density friction transmission system is the key to high performance transmission. Its distinctive features are high power and high speed. The friction pair is widely used in the transmission field of tracked vehicles due to its excellent wear resistance and high heat capacity. Cu-based powder metallurgy friction pairs, including brakes and clutches, work in a multi-stress composite environment. As the three-parameter boundary-pressure, speed, and temperature are the main factors affecting the friction characteristics of the friction pair, and are also important references in the design process of the friction pair. At this stage, the velocity and temperature bound...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/22
Inventor 王延忠魏彬郭超吴向宇李圆
Owner BEIHANG UNIV
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