Research On Muti-ram Forging Forming Process Of Crankshaft For 386Q Engine

Crankshaft is used in the internal combustion engine to transmit power and bear the impact of the key components,through the crankshaft and connecting rod connection,the piston reciprocating motion into the crankshaft rotary motion,which output the engine power,the entire mechanical system driving force depends on the crankshaft of the rotary motion to provide,it's the power of the entire mechanical system source.With the development of automobile,ship and other industries,crankshaft demand is increasing,crankshaft manufacturing industry turn to the environment-friendly green manufacturing direction,more and more attention are paid to reduce the energy consumption of the production process,paying attention to improve production efficiency and reduce manufacturing cost.So the rest of the world is committed to the study of new crankshaft manufacturing technology and technology to improve the quality of crankshaft manufacturing.Based on the bending and forging forming process of the whole fiber crankshaft,a new 386 Q internal combustion engine crankshaft multi-direction die forging tooling was designed and fabricated.The three-dimensional model of tooling was established by using UG software.The design of the tooling combination structure and its movement mode are described in detail.The finite element analysis software Transvalor Forge is used to simulate the forming process of the crankshaft under the action of multi-direction die forging.The temperature field,metal flow,equivalent strain field and die stress field of the forging are analyzed.The change of the forming process and the distribution of the situation.Through the research and analysis of the simulation data,the structural design of the tooling is optimized,and the best combination of upsetting process parameters is worked out.Based on the 386 Q crankshaft,the situation of the change of the size of the spindle and the curvature of the crankshaft was studied.The new blank shape was designed to explore the conditions of the billet,which increased the versatility of the designed tooling and produced more models through the same set of tooling of the crankshaft.The design of the whole fiber crankshaft multi-direction die forging tooling and the development of the production process on the actual production and processing of crankshaft has an important reference value.