Transactions of Materials and Heat Treatment

Title：Influence of pretension force on rigidity assembly frame

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ClassificationCode：TH11

year,vol(issue):pagenumber：2021,46(3):180-183

Abstract：

In order to study the influences of different preloads on the combined fuselage of press, for the combined fuselage of high-speed press DCP200-190 made in Ningbo Jingda, its 3D model was established by SolidWorks and imported into ANSYS Work-bench, and loads and constraints were added to the fuselage according to the force characteristics in the working process. Then, the static analysis was carried out, taking the preload of 1.0,1.5 and 2.0 times of the nominal force respectively, the deformation amounts of fuselage under different preloads were obtained by changing the preload. The results show that the difference between the maximum and minimum line stiffnesses of fuselage is 8%, and the influence of preload on the linear stiffness is not obvious, but the maximum difference of the deformation amount for fuselage is 0.076 mm, it has a great influence on the deformation of combined fuselage so as to affect the accuracy of lower dead point. Therefore, in order to ensure the stamping accuracy of lower dead point for press, the hydraulic cylinder pressure used for the preload of combined fuselage must be stable.

Funds：

国家科技重大专项（SK201201A28-01）

任忠伟（1981-），男，学士，中级工程师 E-mail：rainoicq@163.com

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