Tool abrasion visual examination device and method for numerical control turning machining

Abstract

The invention discloses a tool abrasion visual examination device and method for numerical control turning machining. The device comprises an image acquisition device, a driving device and a computer.The device is simple in structure and convenient to install, and can achieve on-machine detection of the tool abrasion state in a machining gap, the main rear tool surface of a turning tool can be measured without disassembling the tool, the detecting precision is high, the detecting time and the tool setting time are greatly shortened, the work efficiency is improved, and the tool abrasion visual examination device and method for numerical control turning machining are very suitable for application of an automation site. According to the method, three tool abrasion parameters of VBmax, VB and the main rear tool surface abrasion region area are adopted as characteristic indexes to describe the tool abrasion state, and errors may be generated by a single parameter are overcome; and a support vector machine is used for building a sample database and the support vector machine is trained, the three tool abrasion parameters of the abrasion region are used as input of the support vector machine, and the abrasion grade to which a tool belongs is monitored in a self-adaptive manner.

Description

technical field [0001] The invention relates to a tool wear state detection system, in particular to a tool wear inspection device and inspection method for numerically controlled turning. Background technique [0002] Tool wear will affect the processing quality, accelerate tool consumption, reduce production efficiency and increase production costs. Therefore, an effective and reliable tool wear inspection method and inspection device have important application value. At present, there are mainly direct method and indirect method for tool wear state detection. The indirect method is to evaluate the wear condition of the tool by measuring the intermediate parameters related to tool wear. Commonly used indirect methods include cutting force detection method, acoustic emission detection method, power / current detection method, vibration detection method, etc. Although the indirect method can realize online detection of tool status, there are many factors that affect the dete...

AI Technical Summary

Problems solved by technology

This method has the characteristics of high resolution and high detection accuracy, but it needs to move the tool to a special measuring device for detection, which belongs to offline measurement and reduces efficiency

[0005] The literature "Numerical Control Tool Wear State Detection Method Based on Region Growth Method" proposes a non-stop tool wear state detection method and detection device, but this method requires manual adjustment and mobile acquisition devices, and only uses VBmax to judge the tool wear state, and the judgment conditions are single. prone to misjudgment

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