基于面阵CCD的刀具磨损精密检测系统设计

Design of Precision Tool Wear Detection System Based on Area Array CCD

为了实现对加工中心刀具磨损的精密检测,设计了一种基于面阵CCD的刀具磨损精密检测系统。首先,使用激光作为光源,根据坐标转换原理设计了系统结构,利用FPGA产生面阵CCD所需的驱动时序信号;然后,将CCD输出的模拟信号经过信号处理电路转换为二值化数字信号,最后,由FPGA采集发送到上位机中使用LOF算法进行异常点剔除处理。实验测试表明,该系统磨损检测精度可达1μm。该系统具有体积小、精度高,测量速度快,输出信号稳定,抗干扰能力好等特点,可广泛用于刀具磨损检测。

A precision tool wear detection system based on area array CCD was designed to realize the precision detection of tool wear in matching center.Firstly,the laser was used as the light source,and the system structure was designed according to the principle of coordinate transformation.FPGA was used to generate the driver timing signal required by the planar array CCD.Secondly,the analog signal output from the CCD was converted into binary digital signal through the signal processing circuit.Finally,collected and sent by FPGA to the upper computer,the LOF algorithm was used to eliminate abnormal points.Experimental results show that the wear detection accuracy of this system can reach 1μm.The system is characterized by small volume,high precision,fast measuring speed,stable output signal and good anti-interference ability,and can be widely used in tool wear detection.