Micro-drilling visual detection method and device based on inner-cone mirror surface scanning panoramic imaging

Abstract

The invention belongs to the technical field of micro-drilling visual quality detection, and discloses a micro-drilling visual detection method based on inner-cone mirror surface scanning panoramic imaging. The method simultaneously adopts a device with an inner cone mirror surface annular local imaging device, an image acquisition and processing unit and a digital motion unit; firstly, an image with a clear end edge is shot and obtained, and if the end edge is judged to be qualified, continuous shooting is performed to obtain a plurality of side edge images, the side edge images are unfoldedto extract image clear bands, and then a final clear and complete side edge image is obtained through splicing. The invention further provides a micro-drilling visual detection system using the method. According to the invention, in a one-time motion process, the clear, complete and all-around side edge images can be obtained without converting a shooting view angle of a camera, so that the problems that the current micro-drilling detection technology is high in cost, has the detection dead angle, is unstable in detection quality and the like are overcome, the detection efficiency and precision of the micro-drill are greatly improved, and the requirements of batch production and detection are met.

Description

technical field [0001] The invention belongs to the technical field of visual quality detection of micro-drills, and more specifically relates to a micro-drill visual detection method and device based on inner cone mirror surface scanning panoramic imaging. Background technique [0002] Micro-drills (referred to as micro-drills) are mainly used in dental treatment and printed circuit board processing, and the diameter of micro-drills is generally less than 2mm. With the improvement of living standards, people pay more and more attention to oral health issues, and the quality of micro drills directly affects the effect of dental treatment. The quality inspection technology of dental micro-drills has become a difficult problem in the micro-drill production industry; at the same time, with the increasing integration of printed circuit boards, the diameter of micro-drills for processing small holes in circuit boards continues to decrease, and the difficulty of quality inspection...

AI Technical Summary

Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a micro-drill visual detection method and device based on inner cone mirror scanning panoramic imaging, which precisely controls the movement of the micro-drill to be inspected through the equipment of the digital motion unit, thereby Realize the acquisition of clear end edge images and multiple consecutive side edge images during the movement process of the micro drill through the hollow cone structure imaging device, and extract the pixels of the side edge image

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