Real-time detection method of soft abrasive flow abrasive group

Abstract

A real-time detection method of a soft abrasive flow abrasive group comprises the following steps: 1) establishing a phase-field model two-phase interface mixed energy equation according to the distribution condition of the soft abrasive flow abrasive group, also establishing a control equation of the phase-field function evolution, finally approximating a viscous phase and a surface pressure phase by a traditional second order center difference scheme, performing spatial discretization reconstruction of the control equation by a fifth order WENO scheme, performing discretization in the time direction by a Runge-Kutta method with a TVD property, and thus solving the two-phase interface to obtain a theoretical model of the abrasive group distribution; 2) performing real-time image processing of the distribution area of the abrasive group in a constraint channel obtained by a soft abrasive flow image acquisition device according to the obtained theoretical model of the abrasive group distribution, and thus extracting a contour feature of the abrasive group distribution area to obtain the change condition of the abrasive group dynamic boundary. The invention effectively detects the distribution condition of the soft abrasive flow abrasive group.

Description

technical field [0001] The invention relates to the field of soft abrasive flow precision machining, in particular to a method for real-time detection of soft abrasive flow turbulence images. Background technique [0002] In recent years, with the rapid development of my country's mold industry, its application scope has involved many industries such as machinery, light industry, electronics, and building materials. Most traditional mechanical processing methods of molds use CNC milling or EDM for roughing or semi-finishing, but there are still processing traces after processing, so finishing has become an essential and important process. The liquid-solid two-phase soft abrasive particle flow can form turbulent flow on the structured surface of the processed workpiece. It does not forcefully impact the processed surface in the form of a jet, but uses the frequent action of the micro-force and micro-cutting of the abrasive particles to achieve the surface. Step by step smoot...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of poor rapidity and poor accuracy of the existing soft abrasive flow abrasive particle group detection method, the present invention provides a real-time analysis method for soft abrasive particle flow abrasive particle group, which can effectively detect Detect the distribution of abrasive particle groups in soft abrasive flow, and quickly and accurately extract the motion change images of abrasive particle groups in turbulent flow fields

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