PURPOSE: To minimize error and perform highly accurate drilling by calibrating an error factor between servo traveling data and image data after forming multiple holes in a substrate located in the image window of an image pick-up camera and obtaining a hole center.
CONSTITUTION: A camera type reference drilling machine 100 picks up an image of the reference mark of a substrate 11 placed on the upper part of a guide hole in a machining table 10 with an image pick-up camera 46 which is disposed on it, processes the pick-up image, and detects the central position of the reference mark. It drives multiple servo-motors 38, 32, 22 in order so as to move a drilling means 50 to the central position of the reference mark. Multiple holes are formed in the substrate 11 located in an image window of the image pick-up camera. Next, the images of the holes are processed to obtain a hole center. Then, an error function is obtained based on servo traveling data and image data. Error factors between respective data are calibrated by means of least square method.
MITSUI KOJI
JPS61277012A | 1986-12-08 | |||
JPH04270445A | 1992-09-25 |