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Method for examining data file of curve surface reverse product

A technology of data files and curved surfaces, applied in the direction of measuring devices, instruments, etc., can solve the problems of difficult inspection efficiency, time-consuming, high CAD technical requirements, etc., and achieve the effect of broad application prospects and high measurement repeatability

Inactive Publication Date: 2011-08-10
HONGTA TOBACCO GRP
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Problems solved by technology

For example, in the process of manufacturing a cam, if its curved surface is inspected, its measurement data file must be reversed to the CAD / CAM model for inspection and analysis. Therefore, CAD technology requires high technology, takes a lot of time, is low in efficiency, and is correspondingly complicated.
[0005] In addition, in the metrology inspection, it is often encountered that the processing error comparison between two or more cam curves, for example, if a manufacturing company provides two cam curve products at the same time, one is the original part, and the other is its For the imitation parts, it is necessary to test the manufacturing error status of the imitation parts to the original parts. At this time, the research and application of the data file inspection method has an inspection efficiency that is difficult to achieve by other methods

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  • Method for examining data file of curve surface reverse product
  • Method for examining data file of curve surface reverse product
  • Method for examining data file of curve surface reverse product

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Embodiment Construction

[0046] The data file inspection method of the curve surface reverse product of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0047] First, for the flat disc cam series:

[0048] Such as figure 1 with figure 2 Shown is a partial diagram of the cam curve. The polar coordinate system is used in the measuring coordinate system of the plane disc cam surface, and the origin is set at the center of the base circle of the plane disc cam. S1 and S2 represent the actual contour curve of the cam, M1 and m2 represent the curve trajectory of the actual contour line measured by the stylus center, M2 and m1 represent the starting point trajectory curve of the stylus center measurement and positioning, where M1 and m2 are curves S1 and S2 respectively The equidistant curves have a difference of one stylus radius between them. The S curves are the centerlines of S1 and S2, and also the centerlines of curves M1 and m2. Actually, the...

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Abstract

The invention discloses a method for examining a data file of a curve surface reverse product, and is characterized by comprising the following steps of: (1) measuring a profile curve of a curve surface product by an identical-graduation measurement method, and generating a first data file corresponding to each point on the product profile curve; (2) manufacturing the curve surface reverse product by using the first data file; (3) measuring the profile curve of the curve surface reverse product by the identical-graduation measurement method; and (4) comparing characteristic variables of the first data file and a second data file, wherein a difference value of the characteristic variables of the first data file and the second data file is an error corresponding to each point on the curve surface reverse product.

Description

technical field [0001] The invention relates to a method for inspecting curved surface products by a three-coordinate measuring machine, and is especially suitable for using a trigger type measuring head to complete the reverse engineering of a curved surface by using an equal division measurement method or an equidistance measurement method, and using data files to quantitatively analyze the product profile and inspection, as well as testing and quality control of curved surface products such as cam series in machinery manufacturing. At the same time, the invention is also applicable to the precision testing technology research of curved surface products on the measuring machine in the field of mechanical manufacturing, such as relative deviation evaluation among multiple cam curves. Background technique [0002] In the early 1990s, the so-called "advanced manufacturing technology and equipment" research and development boom was put forward all over the world, and the conce...

Claims

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Application Information

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IPC IPC(8): G01B21/20
Inventor 李存华祁跃东吕小波
Owner HONGTA TOBACCO GRP
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