Design And Implementation Of Virtual Simulation System Of Stamping Line

With the rapid development of China’s automobile industry, the automation level of the vehicle body component stamping is continuously increasing. The quality and efficiency of the stamping production is the premise to ensure the rapid development of the automotive industry as well as the key to self-competitiveness of the car manufacturers. This study combines the author’s participated project including the motion analysis and optimization of a company’s stamping line that is undertaken by the State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, and aims to develop a systematic platform of the stamping line motion simulation. By the use of software engineering, the simulation system of the stamping line in this project has been developed.This thesis investigated the basis, frame structure and core technology for constructing the motion simulation system, and analyzed the system development platform and development flow. Based on the analysis of the development of the relevant domestic and international technology fields, this paper determine the CATIA software that presents comparative advantages in motion mode building, data interface and easing to deal with complex geometric models etc., as the building platform for the geometric model construction, and adopted the Visual Basic visual programming language with user-friendly interface for system development.This study analyses the model and motion relationship of each equipment and component structure in the researched stamping line. According to the needs of motion simulation system, this study constructed the information model and geometry model of the main components and moving parts in the stamping line based on CATIA platform, and established the logical relationship among each relevant component pair. It consists the stamping press body, the upper and lower working platforms, the work piece, the transport unit, the tooling-die etc. This study also presented an interactive parameter setting method, which can communicates the data between CATIA model and in-program smoothly. It simplifies the workload of this system development greatly. Moreover, this study constructed a new method for tooling-die light weighting, which can reduce the system memory usage, and make the system running smoothly. System operation and case analysis demonstrated the feasibility and reliability of the information data model and the developing method constructed in the present study. On this basis, this study implemented interference checking for each motion modules in the production line according to the geometric topology relationship, motion parameters and kinematical models of each moving parts in the production line. This function ensures the kinematic reliability of the relevant components, and provides a good foundation for subsequent processing optimization.Finally, this thesis summarized the entire system development, then pointed out the development shortcomings of the present motion simulation system and future research works.