Stress and Deformation Analysis of Cylinder-crown Integrated Hydro-forming Machine with Large Capacity

摘要

Cylinder-crown integrated hydraulic press (CCIHP) is a new press structure.The hemispherical hydraulic cylinder also functions as a main portion of crown, which has lower weight and higher section modulus compared with the conventional hydraulic cylinder and press crown.In this paper, theoretical design of hemispherical hydraulic cylinder with large capacity was first proposed, and the structural parameters of 150 MN CCIHP were listed.Then simulation was carried out to analyze the stress and deformation of CCIHP, and weight comparison was conducted between CCIHP and conventional press.It is shown that the weight reduction is about 20％ compared with conventional press, and the stress and deformation are both within the range of constraints including strength and stiffness conditions.It is possible to manufacture cylinder-crown integrated hydro-forming machine with large capacity.