摘要
为深入研究提高机床静、动态特性,提出采用钢-聚丙烯纤维增强人造花岗岩材料制作机床立柱。以某数控机床铸铁立柱为原型设计SPFG机床立柱结构,通过平行轴理论计算原型铸铁立柱与SPFG立柱的惯性矩,应用ANSYS Workbench软件分析原型铸铁立柱与SPFG立柱的静、动态特性,结果表明:相对于传统铸铁材料,SPFG材料机床静动态特性有显著提高。采用拓扑优化与尺寸优化方法对SPFG立柱进行两级综合优化,结果表明:相对于原型立柱,SPFG立柱质量减轻4.5%,最大应力减小72%,变形位移减小25%,一阶固有频率提升27%,抗弯刚度系数提升了40%,在保证轻量化的前提下,SPFG立柱能显著提升机床立柱静动态特性。
For further research to improve machine static,dynamic characteristics,puts forward steel and polypropylene fiber reinforced artificial granite machine tool post new structure.In a CNC machine cast iron pillars for the prototype design SPFG machine tool column structure,through prototype cast iron pillar and theoretical calculation of parallel axis SPFG pillar of moment of inertia,finite element analysis software ANSYS Workbench analysis prototype cast iron pillar and SPFG pillar of static,dynamic characteristics,the results show that compared with traditional cast iron materials,SPFG material static and dynamic characteristics of machine tool has improved significantly.The topological optimization and size optimization methods were used to carry out the two-stage comprehensive optimization of SPFG column.The results show that compared with the prototype column,the mass of SPFG column is reduced by 4.5%,the maximum stress is reduced by 72%,the deformation displacement is reduced by 25%,and the first-order natural frequency is increased by 27%,and the bending stiffness coefficient is increased by 40%.Under the premise of ensuring the lightweight,the SPFG column can significantly improve the static and dynamic characteristics of the machine tool column.
作者
乔雪涛
杨泽
王朋
李放
周世涛
QIAO Xuetao;YANG Ze;WANG Peng;LI Fang;ZHOU Shitao(School of Mechanical&Electronic Engineering,Zhongyuan University of Technology,Zhengzhou 450007,CHN)
出处
《制造技术与机床》
北大核心
2021年第11期9-15,共7页
Manufacturing Technology & Machine Tool
基金
河南省科技计划项目(202102210276、212102210318)
中原工学院基本科研业务费专项资金项目(K2018YY004)。
关键词
钢-聚丙烯纤维增强人造花岗岩
机床立柱
静动态特性
拓扑优化
性能仿真
steel-polypropylene fiber reinforced synthetic granite
mechanical tool column
static and dynamic characteristics
topology optimization
performance simulation
