小型快速锻造液压机机架的模态分析  

Modal analysis of small fast forging hydraulic press frame

作　　者：牟顺顺 成小乐[1] 牛勇 赵冠淇 MOU Shunshun;CHENG Xiaole;NIU Yong;ZHAO Guanqi(School of Mechanical and Electrical Engineering,Xi’an Polytechnic University,Xi’an 710048,China;School of Mechnical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024, China;Liaoning Zhongwang Group Co Ltd, Liaoyang 111000, Liaoning,China)

机构地区：[1]西安工程大学机电工程学院,陕西西安710048 [2]太原科技大学机械工程学院,山西太原030024 [3]辽宁忠旺集团有限公司,辽宁辽阳111000

出　　处：《西安工程大学学报》2020年第5期49-55,共7页Journal of Xi’an Polytechnic University

基　　金：陕西省重点研发计划资助项目(2018GY-130,2019GY-119);西安市科技计划项目(2017074CG/RC037(XAGC007))。

摘　　要：为解决小型锻造液压机在承受快速锻造力时,因应力应变集中,导致机架开裂、使用寿命缩短等问题,选择适用于50 t锻造力下的最优机架模型。通过Pro/E软件构建小型液压机的2种机身结构模型,利用ANSYS Workbench软件对比分析框架式结构及缸动式结构的应力应变及模态振型。结果表明:缸动式结构锻造所需的总应力是框架式结构总应力的17.6%,缸动式锻造液压机的固有频率最大增长率为框架式锻造液压机的30%。综合考虑,在小型快速锻造液压机结构的选择上,缸动式结构更优,为今后液压机型式选择和优化提供参考。In order to solve the problems of the cracked frame and shortened service life caused by stress and strain concentration when small hydraulic forging press is subjected to rapid forging force,the optimal frame model suitable for 50 t forging force was selected.At the same time,two fuselage structure models of small hydraulic press were constructed by Pro/E software,and the stress-strain and modal shape of frame structure and cylinder dynamic structure were compared and analyzed by ANSYS Workbench software.The results show that the total stress required by dynamic forging of cylinder is only 17.6%of that of frame structure,and the maximum growth rate of natural frequency of dynamic forging hydraulic press of cylinder is 30%of that of frame forging hydraulic press.Thus,in the selection of small rapid forging hydraulic press structure,cylinder dynamic structure is better,which provides a reference for future hydraulic model selection and optimization.

关 键 词：小型锻造液压机结构 静应力振型 模态分析 Pro/E ANSYS Workbench 

分 类 号：TG312[金属学及工艺—金属压力加工]