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In situ measurement method in surface quality evaluation

A surface quality, in-situ measurement technology, applied in the direction of testing wear resistance, etc., can solve the problems of deviation of measurement results and unstable measurement results.

Inactive Publication Date: 2012-10-03
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] In addition to the small test area for surface quality evaluation, since the surface contains a large number of random unstable factors in processing, the measurement results will be unstable, and the measurement results at different places on the same surface will have large deviations.

Method used

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  • In situ measurement method in surface quality evaluation
  • In situ measurement method in surface quality evaluation

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Embodiment Construction

[0026] The implementation process of the in-situ measurement method will be described below in conjunction with the examples, and the present invention will be further described in detail. It should be understood that the examples are only for illustration of the present invention and are not intended to limit the scope of the present invention in any way.

[0027] Take a part of the workpiece to be tested as an experimental specimen, such as figure 1 As shown, the size of the specimen is 35mm×35mm×8mm, where the upper plane of the specimen is the original actual working surface of the workpiece, and the processing requirements for the rest of the specimen are: the bottom surface of the specimen is parallel to the upper plane, and the four sides of the specimen Adjacent faces are perpendicular;

[0028] Place the test piece on the workbench of the laser engraving machine, adjust the relevant parameters of the equipment, and carve a groove on the upper plane of the test piece,...

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Abstract

The invention discloses an in situ measurement method in surface quality evaluation. Firstly, a trench is engraved on the surface of a workpiece to be measured by adopting a laser engraving method, wherein the trench is taken as a measuring target region, and the measuring target region does not participate in a working process; and secondly, positioning is carried out by measuring coordinate values of characteristic points of the target region in a scanning area of a non-contact type three-dimensional microstructure instrument, and surface quality evaluation is carried out. In the in situ measurement method, the in situ measurement is carried out on surface microstructure, rules of the actual working surface are disclosed, asymptotic property of a physical evolution process of the surface in a service period can be accurately evaluated, and a new visual angle and a new method are provided for the surface quality evaluation.

Description

technical field [0001] The invention relates to an in-situ measurement method, in particular to an in-situ measurement method in surface quality evaluation. Background technique [0002] The basis of surface quality evaluation is surface roughness theory. Traditional surface roughness parameters are mostly descriptions of the initial surface microscopic topography geometric features, and have not established a close relationship with surface performance. That is to say, the surface quality evaluation of the existing roughness theory uses the initial surface to describe the entire service cycle, which is obviously unreasonable. The relationship between the initial surface and its performance has been the focus of research. [0003] The service performance of the surface is manifested or verified during its service cycle, and its physical evolution process is obviously gradual, from precision maintenance, attenuation to failure, and the surface quality evaluation based on th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/56
Inventor 李伯奎刘远伟陈小岗曹苏群王林高蒋素琴李年莲
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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