基于超分辨率快速测量的切边冲孔机误差补偿方法

Error compensation for trim puncher based on rapid super-resolution measurement

在切边冲孔机长时间生产中,为了减小菲林形变引起的柔性电路板(FPC)冲切位置误差,利用目标冲切完成后的图像信息,测量金手指与冲切边缘间的距离,计算出系统误差并进行误差补偿。结果显示,经过误差补偿后,系统的冲切位置均方根误差在X与Y方向分别减小了41.6%与17.0%,系统的制程能力指数(CPK)达到1.611 8。利用菲林加大了FPC产品的外围尺寸,提高了产品的可利用面积,降低了生产成本。提出的超分辨率快速测量方法不需要对图像进行配准,可以将边缘位置定位误差由±0.5个像素降低为±0.25个像素。使用的误差补偿方法能够减小长时间生产所引起的冲切位置误差,设计的系统满足FPC的冲切精度要求。

To eliminate the punching error of the flexible printed circuits(FPC)caused by the deformation of the films during the running time of the trim puncher,we used the images of the target after punching to measure the distance between the dies and the punching edge,and calculated the error of the system in order to do error compensation.The experiment results demonstrate that,after error compensation,the root-mean-square error of the punching position,respectively,reduces by 41.6%and 17.0%in X-direction and in Y-direction,the process capability index of system is 1.6118.We used film to extend the dimensions of the FPC production and increase the useful area of the production,so that the cost of production could decrease.The proposed rapid super-resolution measurement,without using image registration,enable to reduce the position error of image edges from ±0.5pixels to±0.25 pixels.The error compensation used in this study can reduce the error of punching position caused by running aproduction for several hours.The proposed system is capable of satisfying the precision requirements of FPC punching.