| In recent years,the automobile industry has developed rapidly in our country,and the manufacture of car bodies has become the key to automobile development.Welding is the key technology to improve the body welding production line,and the fixture is the key to ensuring the quality of welding.With the rapid development of industrial robot technology,robotics are more and more widely used in automotive welding production lines.The mature development of digital factory technology has also provided convenience for the manufacturing and design of car bodies.Traditional manufacturing and production models have been unable to keep up.With the rapid development of the industry,how to use digital factory technology to quickly and efficiently apply to the actual automotive production is a problem that the automotive industry must face.Digital factory technology is used to realize a series of processes such as planning,design,manufacturing,and management in the product lifecycle management(PLM),as well as collaboration between companies that have collaborative relationships in the field of product development.Digital factory technology can simulate and optimize the entire production process to realize the rapid prodution and meet the market demand for car upgdating.This article takes the welding production line of inner side panel assembly of a certain vehicle model as the research object,uses the digital factory technology software platform to carry out the process planning and welding fixture design,virtual simulation and joint debugging,to discuss the actual value of using digital factory technology in the production of automatic welding line.Firstly,through the process analysis of the welding line of inner side panel of the automobile body,the welding points are reasonably allocated,the selection of the welding gun or the robot is completed,and the welding line process plan of three aspects of cycle planning,process planning and layout planning is proposed.Secondly,analyze the three-dimensional model of the known workpiece,reasonably plan the main and auxiliary positioning holes and positioning surfaces,and use the three-dimensional design software to design the overall plan of the welding fixture according to the welding line fixture design process.Thirdly,the layout design and optimization of the robot welding production line,through the Tecnomatix software,build a virtual simulation environment,through the construction of 3D layout,adding process,combined with path planning and welding trajectory,simulation of workpiece loading,fixture opening and closing,sliding table movement,Multi-robot welding,workpiece blanking,manual sampling and other welding line production processes,realize the simulation of solder joint accessibility,welding path simulation,and multi-robot welding simulation.The rationality of the welding line planning is verified by estimating the production cycle of the station operation.Finally,use TIA Portal software and Tecnomatix for virtual debugging.Build a virtual debugging environment in the Tecnomatix Process Simulate software module,complete configuration and programming in the TIA Portal,use S7-PLCSIM Advanced to create a virtual PLC,realize the connection between TIA Portal and Tecnomatix,perform virtual debugging,and ensure automatic welding The production line works smoothly,effectively shortening the on-site debugging time. |
