卧式数控机床对刀间隙自动检测系统设计

Design of tool aligning gap automatic detection system for horizontal NC machine tool

为了克服人工操作检测系统对刀间隙检测精度低的弊端,设计新的卧式数控机床对刀间隙自动检测系统。系统核心由光源、CMOS图像采集模块与自动检测模块构成,使用红色环形光源照射工件与刀具的间隙部位,CMOS图像采集模块通过CMOS摄像机采集间隙图像,并通过USB接口传输至自动检测模块,自动检测模块通过基于Hough变换的对刀间隙自动检测算法,对得到的间隙图像进行计算,获取刀具和工件的间隙值。经验证,所设计系统能够有效检测对刀间隙,且检测精度与检测鲁棒性优于同类检测系统,应用价值可观。

A new tool aligning gap automatic detection system for horizontal NC machine tool is designed,which can overcome the low precision of tool aligning gap detection in the manual operation detection system.The system core is composed of the light source,the CMOS image acquisition module and the automatic detection module.In the system,the red ring light source is adopted to illuminate the gap area between the workpiece and tool,the CMOS image acquisition module is used to collect the gap images with the CMOS camera and transmit them to the automatic detection module through the USB interface.The automatic detection module is applied to calculate the collected gap images by means of the tool aligning gap automatic detection system based on the Hough transformation,with which the gap value between the workpiece and tool is obtained.It is verified that the designed system can effectively detect the tool aligning gap,and the detection accuracy and robustness are better than that of the similar detection systems,which has the considerable application value.