Orthogonal vision detection system for detecting wear condition of end mill

Abstract

The invention relates to an orthogonal vision detection system for detecting the wear condition of an end mill and belongs to the technical field of optical measurement and mechanical engineering. The orthogonal vision detection system comprises top surface and lateral surface CCD (Charge Coupled Device) cameras, top surface and lateral surface lenses, top surface and lateral surface ring-shaped light sources, an X-directional guide rail, a Z-directional guide rail, an X-directional sliding block, a Z-directional sliding block, a bracket, handwheels, a rotating table, a marble base, an image acquisition card and a computer. According to the invention, the double CCD cameras which are arranged in the orthogonal directions are adopted, an image analog signal of a wear region is acquired by the image acquisition card and is converted into a digital signal, computer-vision software is applied, the digital signal is processed by the computer and the width and the area of a wear zone of a rear tool face of the end mill are accurately measured, so that the detection of the wear condition of the end mill is implemented. The orthogonal vision detection system has the characteristics of non contact, high resolution, high automation degree and high speed. The fault-free operating time of machine tool equipment an be effectively prolonged and the product quality is improved. The orthogonal vision detection system has very important significance and practical value in application of an automatic machine tool.

Description

Technical field: [0001] The invention relates to a visual inspection system for detecting the wear state of an end mill. Especially based on computer vision technology, dual CCD cameras installed in orthogonal directions are used to obtain the image of the wear area of ​​the end mill, which is input into the computer and processed by software to accurately measure the width and area of ​​the wear zone on the flank of the end mill An Orthogonal Vision Inspection System for Detecting the Wear Status of End Mills. It belongs to the technical fields of optical measurement and mechanical engineering. Background technique: [0002] In automated production, an extremely critical technology is tool wear status monitoring technology, which is one of the main means to reduce manufacturing costs, reduce manufacturing environmental hazards, and ensure normal and efficient operation of manufacturing systems and product quality. Studies have shown that the use of tool wear status monito...

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Problems solved by technology

However, in fact, due to the different processing conditions and the irregular shape of the tool wear area, the calculation error of this method is relatively large.

Lin Lin proposed a scheme to detect rake wear in the article "Image Detection of Rake Face Wear" (Journal of Harbin University of Science and Technology, 2000, Issue 05, page 43), which can effectively detect crater wear on the rake face, but Has no effect on thin layers of wear on the flank

Chi Hui designed a tool wear detection system based on computer vision technology in the article "Application of Image Processing Technology in Tool Wear Detection" (Tool Technology, Issue 08, 2007, page 100). The detection system is composed of a CCD camera and The one-way visual detection structure composed of magnifying lens, because the wear of the end mill occurs on the main flank and the auxiliary flank, the system can only measure the wear amount of the main flank of the end mill, so for the end mill The detection of the wear state of the knife is not perfect

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