关键词: 白车身；虚拟匹配；关节臂三坐标测量仪；PolyWorks 分析软件

Abstract: Oems need to improve the control ability of parts size and welding process to reduce production costs. In this paper, the articulated coordinate measuring machine and PolyWorks analysis software are used to measure the dimension of parts and analyze the virtual matching. The size deviation of the matched parts is mastered, and the gap and interference of the lap surface are calculated after the point clouds of several parts are matched according to the design. Combined with the actual welding process and positioning situation, the causes of deformation are found, which provides the basis for the next step of parts improvement and fixture adjustment, so as to solve the actual problems on the site.

Key words: Body in white; Virtual matching; Articulated coordinate measuring machine; PolyWorks analysis software