On-line automatic tool setting and breakage detection device for minitype milling tool

Abstract

The invention discloses an on-line automatic tool setting and breakage detection device for a minitype milling tool. The device comprises a shell, a device base, an optical tool detection system, a centralized control system and a tool abrasion alarming system, wherein the optical tool detection system is fixedly installed on the device base by a device bracket; the optical tool detection system is a planar-array type image sensor system and is in signal connection with the centralized control system; the centralized control system is in signal connection with the tool abrasion alarming system; the optical tool detection system comprises a radial tool measurement device and a tool end measuring device; the radial tool measurement device collects the local detailed image data of a cutting blade abrasion zone along the radial direction of the tool to realize automatic tool setting and breakage detection; and the tool part measuring device assists the breakage detection of the tool; and the main shaft of the machine tool of the tool is provided with a calibrated target object. The detection device is characterized in that the radius and length offset of the tool can be automatically measured when the tool rotates and the breakage situation of the minitype milling tool can be detected.

Description

technical field [0001] The invention relates to a mechanical processing detection device, in particular to an automatic tool setting and damage detection device for milling cutters. Background technique [0002] Micro-milling is an important method of ultra-precision machining, which can flexibly process structures with three-dimensional micro-sizes. Micro-milling cutters are a key part of micro-milling processing systems. [0003] Before micro-milling, it is necessary to determine the length and radius offset of the tool for tool setting. At present, on the micro-nano milling processing center, the laser tool setting system based on the principle of occlusion is usually used, because the size of the micro-milling cutter is greatly reduced. , the diffraction of light makes the measurement accuracy greatly reduced, so the repeatability of the measurement results is poor and the reliability is low. [0004] In addition, due to the poor rigidity of micro-tools, they are prone ...

AI Technical Summary

Problems solved by technology

[0003] Before micro-milling, it is necessary to determine the length and radius offset of the tool for tool setting. At present, on the micro-nano milling processing center, the laser tool setting system based on the principle of occlusion is usually used, because the size of the micro-milling cutter is greatly reduced. , the diffraction of light makes the measurement accuracy greatly reduced, so the repeatability of the measurement results is poor and the reliability is low

[0004] In addition, due to the poor rigidity of micro-tools, they are prone to breakage. It is necessary to detect the damage state of the tool during processing. At present, scanning electron microscopes or tool microscopes are mainly used for off-line observation, and there is a lack of methods for online observation of micro-milling tools and automatic damage detection. device, so it is impossible to prevent damage to the machined surface and reduction in geometric accuracy due to tool breakage on the machine tool

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