基于ANSYS的无心车床空心主轴单元的动态特性分析  

Dynamic Characteristic Analysis on Hollow Spindle of a Centerless Lathe Based on ANSYS

作　　者：豆卫涛[1] 彭常户[1] 贾庆功[1] 王飞伟[1] 周杰[1] 史丽晨[2] 

机构地区：[1]西部超导材料科技股份有限公司,西安710018 [2]西安建筑科技大学机电工程学院,西安710055

出　　处：《机械工程师》2017年第11期162-165,共4页Mechanical Engineer

摘　　要：利用Pro/E建立了无心车床的空心主轴单元三维模型,采用ANSYS对无心车床的空心主轴单元进行模态分析,得到无心车床的空心主轴单元前6阶固有频率和振型云图;在模态分析基础上,对无心车床的空心主轴单元进行谐响应分析。通过分析得到如下结论:所研究的无心车床的空心主轴工作频率远离其1阶固有频率,运转具有较好的稳定性;刀具以及调刀套处的振动幅值为整根无心车床的空心主轴上振动幅值最大处,该两处的振动幅值对棒料的加工精度影响最大,也是最容易发生疲劳破坏的区域。无心车床的空心主轴单元的动态特性分析为后续的结构优化提供了理论依据。This paper establishes the three-dimensional Pro/E model of hollow spindle in a centerless lathe. Based on modal analysis with ANSYS , the first six order natural frequencies and vibration mode cloud of the hollow spindle are obtained. And then the harmonic response analysis of the hollow spindle is carried out. It is concluded that the hollow spindle work frequency is far away from the first order natural frequency, and so the system＇s stability is good. The maximum vibration amplitude of the hollow spindle lies on the nodes of the cutter and adjustable cutter bush, which influence machining precision of the bar mostly. The nodes of the cutter and adjustable cutter bush is the most prone to fatigue damage. Hollow spindle＇s dynamic characteristic analysis provides the theoretical basis for the structure optimization.

关 键 词：无心车床 空心主轴单元 ANSYS 模态分析 谐响应分析 

分 类 号：TH122[机械工程—机械设计及理论]