A Part Quality Inspection Method Based on Point Measurement Data

Abstract

The invention discloses a part quality detection method based on point measurement data, which belongs to the field of part quality detection. Including 1) the step of surface feature discrete processing; 2) the step of creating a collection of sampling points; 3) the step of point measurement and data acquisition; 4) the step of constructing point groups; 5) the step of constructing point group statistics; 6) the construction of feature group statistics Quantitative step; 7), the step of constructing batch statistics. The invention performs equidistant dispersion on the curved surface features of the parts, and combines the point-taking method to obtain a sample point set that is closer to the real contour of the parts, and compares the measured data with the theoretical data to reflect the processing quality of each type of feature of the parts. Manufacturing process information and special structure information comprehensively reflect the influence of processing sequence, process parameters and special structure on the quality of parts, and can obtain multi-dimensional evaluation indicators, which intuitively reflect the quality of parts in specific areas, specific processes, and specific processing parameters status, the test results are objective and true.

Description

technical field [0001] The invention relates to a part quality detection method, in particular to a part quality detection method based on point measurement data. Background technique [0002] In modern equipment manufacturing, mold manufacturing, automobile industry, aerospace, petrochemical energy and other manufacturing industries, the parts that make up the machine have more and more complex structures, and their single piece value is huge, which is not only the embodiment of the core technology of the manufacturer, but also the Major risk points in the quality management process. Accurate and reliable measurement technology is the basic prerequisite for obtaining high-quality complex parts, and a large number of advanced detection technologies are used here. With the rapid development of digital inspection technology, more and more companies use it for part processing inspection and quality control. In this type of detection technology, on-machine measurement systems,...

AI Technical Summary

Problems solved by technology

[0003] When the complexity of the part structure rises to a certain stage, the commonly used geometric tolerances (such as surface contour degree, hole position degree, inclined rib top surface) indicators can no longer accurately and comprehensively evaluate the quality of the part when used alone characteristics, leading to many hidden potential problems gradually exposed in the assembly stage or during use, causing huge losses to users

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