摘要
为提高龙门加工中心的静动态特性,保证加工工件的几何精度,运用有限元软件对横梁组件进行了静动态分析,发现横梁是横梁组件的薄弱结构。采用对角筋板理论,对横梁进行了结构改进,并进行有限元分析。结果表明,改进后横梁组件的变形量减少了7.6%,一阶模态频率提高了17.2%,静动态特性得到了明显提高。最后通过实验结果与理论结果进行对比,验证了改进方案的合理性,为横梁组件结构设计提供了理论依据。
To improve the static and dynamic characteristics of gantry machining center deformation quantity, guarantee the machining work piece geometry accuracy, the statics and the modal were analyzed with the help of finite element software for the crossbeam components, found the crossbeam is weaker part in crossbeam component. Based on the diagonal reinforcement plate theory, structure improvement on the crossbeam and use the finite element analysis. The results show that the modified crossbeam components deformation decreased by 7.6% , first stage modal frequency increased by 17.2% , the structural performances of the crossbeam components is improved evidently. Finally, the test results and theoretical results were compared to verify the rationality of the improved scheme, these provide theoretical base for designing of crossbeam component structure.
出处
《组合机床与自动化加工技术》
北大核心
2013年第8期55-57,共3页
Modular Machine Tool & Automatic Manufacturing Technique
基金
南通市产学研协同创新计划项目(BC2012007)
关键词
龙门加工中心
横梁组件
有限元分析
结构改进
gantry machining center
crossbeam component
finite element analysis
structure improvement
