面向多品种大型筒类薄壁件的机外预调系统及方法

To solve the problems of low positioning efficiency and high machine occupancy for large thin-walled parts? an off-machine presetting system and application for multi-variety large cylindrical thin-walled parts was proposed that included the off-machine presetting station with its control software. The off-machine presetting station was composed of four-axis measuring equipment? measuring ending (dial indicator or laser scanner) and zero-point positioning fixture? while the control software had the applications of metering data analysis? point cloud analysis and assisted posturing. For cylindrical and conical thin-walled parts? the dial indicator was used with the four-axis measuring equipment to complete the measurement of the pose meter data? and then the attitude adjustment was calculated through the control software? so as to assist the workers to complete the workpicce adjustment. For special-shaped cylinder thin-walled parts? the laser scanner was used to complete the measurement of point cloud data? and then the correction amount of the processing coordinate system was calculated with the point cloud registration method through control software. After completing the position and pose measurement and pre-adjustment of multi-model thin-walled parts on the off-machine presetting workstation? they were quickly transferred to the machine tool by using the zero-point positioning System and processed to complete. Based on this presetting System that had been installed on site, the experimental results showed that the off-machine presetting System could improve the align-ment efficiency of cylindrical and conical parts by about 4 times, and improve the alignment efficiency of special-shaped parts by about 0. 7 times. At the same time> the equipment had certain versatility, which could provide ref-erence and technical support for the alignment and positioning process of other types of large-scale thin-walled parts in the aerospace manufacturing industry.