Part quality detection method based on point measurement data

Abstract

The invention discloses a part quality detection method based on point measurement data and belongs to the field of part quality detection. The method comprises the following steps of 1) surface feature discrete processing; 2) establishing a sampling point set; 3) a step of point location measurement and data acquisition; 4) constructing a point group; 5) constructing point group statistics; 6) constructing characteristic group statistics; and 7) constructing batch statistics. According to the method, equidistant scattering is carried out on the curved surface characteristics of the part, a sampling point set closer to the real contour of the part is obtained by combining a point taking method, actually measured data is compared with theoretical data, the machining quality of each type ofcharacteristics of the part is reflected, and meanwhile the machining and manufacturing process information and the special structure information are added; influences of the machining sequence, the technological parameters and the special structure on the part quality are comprehensively reflected, evaluation indexes of multiple dimensions can be obtained, the quality state of the part under thespecific area, the specific procedure and the specific machining parameters is visually reflected, and the detection result is objective and real.

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

Images