Method for testing cutting and bonding friction characteristics with point-contact opened-closed type pin-disc friction system

A technology of system testing and friction characteristics, applied in the direction of measuring devices, mechanical devices, instruments, etc., can solve the problems of large contact area and difficulty in reaching the tool stress range, and achieve the effect of ensuring stability and accuracy

Active Publication Date: 2012-06-27
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

However, the pins are generally flat pins with a large contact area, and it is difficult to reach the stress range that the tool bears under actual cutting conditions within the load range that the equipment can bear.

Method used

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  • Method for testing cutting and bonding friction characteristics with point-contact opened-closed type pin-disc friction system
  • Method for testing cutting and bonding friction characteristics with point-contact opened-closed type pin-disc friction system
  • Method for testing cutting and bonding friction characteristics with point-contact opened-closed type pin-disc friction system

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Embodiment Construction

[0014] To achieve the above object, the solution of the present invention mainly includes:

[0015] (1) Since the contact stress of the pin-workpiece friction pair mainly depends on the diameter of the ball stud pin and the applied load, according to the contact stress required for the test and the expected applied load range, the formula R = 6 F ( 1 - μ 1 2 E 1 + 1 - μ 2 2 ...

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Abstract

The invention relates to a method for testing cutting and bonding friction characteristics with a point-contact opened-closed type pin-disc friction system which is structured by a friction test platform transformed by a lathe. Aiming at the research requirements on the cutting friction problem and through the design of a pin-disc structure and the combination of lathe space motion trail, an opened-closed type system can be structured, and the cutting friction under an extreme working condition can be simulated; and an acting force of a contact interface can be measured by utilizing a Kistler piezoelectric force meter, a tangential force component caused by material elasticplastic deformation can be removed by combining a finite element simulation method, and thus a bonding friction factor can be obtained. The method disclosed by the invention is mainly used for testing and analyzing the friction characteristic of cutters in the cutting process. A main body of equipment is common equipment in a manufacturing laboratory, and has the advantages of good rigidity, simple structure, easy implementation and the like.

Description

1. Technical field [0001] The invention relates to a method for testing cutting adhesive friction characteristics by using a friction test platform transformed from a lathe to construct a point contact open / close pin-disk friction system. According to the research needs of cutting friction, through the design of pin-disc structure and the synthesis of lathe space motion trajectory, an open / closed friction system is constructed to simulate cutting friction under extreme working conditions; the Kistler piezoelectric dynamometer is used to measure The force of the contact interface is combined with the finite element simulation method to remove the tangential force component caused by the elastic-plastic deformation of the material to obtain the adhesive friction coefficient. [0002] The invention is mainly used for the test and analysis of the tribological characteristics of the cutter in the cutting process. The main body of the equipment is a common equipment in the manufact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/02
Inventor 王西彬方泽平刘志兵解丽静焦黎李忠新梁志强杨洪建
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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