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论文类型：期刊论文

发表时间：2022-06-29

发表刊物：纳米技术与精密工程

所属单位：机械工程学院

期号：4

页面范围：310-314

ISSN号：1672-6030

摘要：Precise assembly based on machine vision is an important method to realize automatic assembly for miniature parts. An assembly system based on machine vision was developed in this paper, which solved the key problem in the assembly process, including the great difference in size, shapes and surface features of parts, and strict tolerance required for both position and orientation. The recognition and localization of the parts to be assembled were implemented by Canny edge detection, least square fitting algorithm, contour detection, centroid and principal axis calculation and image stitching. Precise assembly of the miniature parts was guaranteed through the transformation of the device coordinate systems. Experimental result shows that the assembly accuracy is less than 40 μm.

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