摘要
根据经验和使用比拟的方法,设计了高速立式加工中心四种不同布筋形式的主轴箱模型。因为主轴箱的变形会间接引起刀具位置的偏移,所以在有限元分析时引进一质量点来模拟刀尖的空间位置,这样做更加形象地反应由于主轴箱变形而引起的对加工精度的影响。通过ANSYS有限元分析计算出主轴箱在各个方向上的刚度,通过比较可以得出多网筋主轴箱的刚度较大,也就是此方案较优。此方法为机床主轴箱有限元分析及优化方案选择提供技术依据。
Based on experience and the use of comparable methods, four different forms of fabric reinforcement headstock models of high-speed vertical machining center are designed. Introducing a quality point to simulate the spatial location of tool tip in f＇mite element analysis, because the offset of the tool location is indirectly caused by the deformation of headstock. Doing so, the impact on machining precision casused by the deformation of headstock is more vivid. Calculating the stiffness in all directions of the spindle box by ANSYS finite element analysis. By comparing, the stiffness of multi-network reinforcement spindle box is maximum, and, in the other words, this program is better. This method provide technical basis for finite element analysis and optimization scheme selection of machine tool headstock.
出处
《组合机床与自动化加工技术》
北大核心
2010年第7期26-28,34,共4页
Modular Machine Tool & Automatic Manufacturing Technique
基金
"高档数控机床与基础制造装备"科技重大专项:DVG850高速立式加工中心(2009ZX04001-014)
关键词
主轴箱
有限元分析
质量点
刚度
优化
ANSYS
headstock
finite element analysis
quality point
stiffness
Optimization
ANSYS
