Research Of Flexible And Self Adjust Auto Body Weld Fixture

Today’s manufacturing modes are deficiencies in rapid respond to market demand, moreover, they also have contradiction between flexibility and productivity. So, new manufacturing mode must be studied. Therefore, some scholars bring forward a new manufacturing mode named RMS(Reconfigurable Manufacturing System). Automobile industry is important for every country, in intense competition, it must produce individuation automobile which have individuation bodywork as quickly as possible. Welding is one of four automobile manufacturing processes, and the rapid construct for welding line is one of predetermination condition. So, using RMS in welding line design is of importance for strengthening enterprise competition.(1) The development of manufacturing systems and fixtures has been described. The concept of the "fixture" based on the research of reconfigurability and suitable for RMS has been presented. The relation and the difference between a fixture in RMS and conventional fixture has been analyzed. The category of fixture element and fixture unit for RMS has also been studied.(2) The technique for welding fixture rapid reconfigurable design was studied. Welding clamp configuration design was the key step for the whole welding line reconfiguration and its keystone was orientation and part’s standardization. Because the bodywork pieces are sheet, they are prone to deformation at the direction of perpendicularity. So the orientation points in first datum plane must have more than three, and the effect was decided not only the point’s amount but also its place. With finite element analysis, the best project can be found.(3) Design the mechanical structure and rectification analysis of the fixture by using UG to conduct 3D modeling; Analyze the stiffness of workpieces by using software named ANASYS; Achieve the motion emulator of fixtures by using ADAMS. (4) Now the flexible and self adjust weld fixture has been applied in enterprise. Achieved the rapid reconfigurable for different workpiece. By online examining and adjusting, the variation of the fixture and be controlled smoothly.