Study On The Simulation Of The Forming Process And The Optimization Of The Technology Of Auto-bending-axis

Die design and manufacture is the key of plasticity process technics, which directly decide the quality of part. Conventional die design and manufacture is a trial and error course, so it results in prolonged developing period and increased the cost because it needs through and through several times of design, manufacture, trial-manufacture and modification.Automobile bending-axis is the most important motion part, it's working environment is very complexity, it's performance directly influences the reliability and life of the engine. With the improvement of the structural complication and strength index of the engine structure, during the work process, the bending-shaft produce bent and torsion because of the action of periodicity variational air pressure, inertia pressure evocabled by the to-and-fro and whirligig motion and torque, therefore, engine bending-shaft must be provided with the preferable fatigue intensity and the structure rigidity through making use of the material of high intensity and the reasonable forging technique.The feasibility, stability,quality of forming (including brimming forming, replicate and organize disfigurement), material utilize efficiency and how to reduce load, how to improve mould life-span of the automobile bending-axis is all emphasized when we working out forming techniques of bent-shaft because of complicated shape and forging technics of bending-axis. In this paper, several key techniques of MP5 bending-shaft is simulated by DEF0RM3D (a FEM software), the effect of bill diameter, burr groove structure and friction gene on forming quality and the flowing and strain stress distributing disciplinarian of metal material are particular analyzed. The disfigurement occurred in the forming course is forecasted, eliminated forming disciplinarian and optimized technics parameter and mould structure through numerical simulation. In the practice production, the correctness and the validity of technics scheme and the rationality of mould design is attained practice proved. The theory of precision forging, technology of FEM simulation and mould CAD/CAM are integrated through this research, which helps to shorten developing period, prolong life-span of die, and cut down the cost, etc. The progeny of the research can provide accordance for other bevel gears' producing.