Transactions of Materials and Heat Treatment

Title：FEM modal analysis on cold forging press CWFP12500 kN

Authors： Ge Min Li Haitao Li Jiangguo

Unit： Beijing Research Institute of Mechanical & Electrical Technology

KeyWords： cold forging press modal analysis dynamic characteristics

ClassificationCode：

year,vol(issue):pagenumber：2015,40(10):88-91

Abstract：

To obtain good dynamic characteristics of the cold forging press CWFP12500 kN, which was designed by Beijing Research Institute of Mechanical & Electrical Technology, a 3D model of the press was established by software Solidworks based on the characteristics of the four-column combined type frame structure. Then, the amount of deformation on the lever was calculated by exerting preload to frame. Further, the statical analysis of the press was made by software ANSYS, the deformation on the lever under preload was obtained，and the first twenty modal frequencies and mode shapes were obtained by modal analysis. The results show that the ANSYS analysis results of the lever deformation amount is 3.43 mm, which is similar to the calculated value 3.77 mm, so the method of applying preload is feasible. The minimum natural frequency of the press is 17.919 Hz, which is much larger than the excitation frequency of the slider 0.42-0.83 Hz and the small gear shaft vibration frequency 3.3-6.7 Hz, so the resonance does not occur. The influence of the vibration mode of every step on the press was analyzed, and the improved measure of appropriately increasing the cross sectional area for the lever with large deformation was proposed.

Funds：

国家科技重大专项“高档数控机床与基础制造装备”（2009ZX04004-071）

葛敏（1987-），男，硕士研究生

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