Study On Finite Element Modal Analysis And Structure Optimum Design Of CWFP12500KN Cold Forging Press

As a traditional processing manner，forging technics owns mature technology basicand expansive application space，with the characteristics：smaller work load，higherproductivity，less materials consumption，superior quality，better working condition．Therapid development of machinery industry andforging technics put forward higher forcerequirements for forging machine，but the advanced and large cold forgingpress is still ablank in China．The research based on high nominal stroke cold forging press, it’s amajor national science and technology projects subject host by BRIMET.The study hasimportant theoretical and practical significance．By doing modal analysis of the mode of the structure, factors affecting the bodynatural frequency of the structure were optimized to find out.The main research contentsin this thesis are as follows：（1）The three-dimensional model of CWFP12500KNcold forgingpress basing onthe preliminary design is created and the finite element of the body is reasonablysimplified．（2）Through the model analysis of the frame of12500KN cold forging machine，the principle modes and natural frequencies are calculated and the dynamic response offrame in the external excitation is discussed．The research provides theoretical base forimproving the parameters and structure of the weak parts of12500KN cold forging pressand provide improved schemes for future design．1000T cold forging press is alsoanalyzed at the same to assure the performance of12500KN cold forging press.（3）4modified schemes are presented in the article for the structure of12500KNcold forging press. Each of the schemes is carried on the modal analysis. Through theresearch, we found the factor that influence natural frequency of CWFP12500KN coldforging press most. The body is optimized in the research to have a better anti-vibration,safer and reliable structure.