摘要
围绕某龙门加工中心进给系统的动态特性及工作台尺寸优化开展研究。首先,对进给系统进行了振动信号的采集与分析;其次,对进给系统进行了模态分析并利用Ansys workbench建立了进给系统的有限元模型;最后,以工作台质量为约束,并取工作台7个结构尺寸作为优化变量,以提高工作台的固有频率为优化目标进行了工作台的尺寸优化。研究结果表明,优化工作实现了在保证工作台质量不增加的情况下提高工作台总体刚度的目标。
In order to solve the vibration problem of the feeding system of a gantry machining center, firstly, the acquisition and analysis of the feed system vibration signal is carried out. Secondly, the modal analysis of the feed system is carried out and the finite element model of the feeding system is established with Ansys workbench. At last, the mass of worktable is constrained, and seven structural dimensions of worktable are taken as optimization variables to optimize the natural frequency of the worktable. The result shows that the optimization work achieves the objective of improving the overall rigidity of the worktable without increasing the mass of the worktable.
出处
《制造技术与机床》
北大核心
2017年第4期56-62,共7页
Manufacturing Technology & Machine Tool
基金
“立式数控铣车复合加工机床”山东省重大专项(2014ZZCX04101)
关键词
进给系统
模态分析
工作台
尺寸优化
ofeeding system
modal analysis
worktable
size optimization
