摘要
为避免大型数控滚齿机滚削力引起立柱振动而影响加工精度,对大型滚齿机立柱刚度特性及谐响应进行了仿真分析。在滚齿机立柱结构特征、滚刀主轴传动原理及动力学理论基础上,建立了滚齿机立柱与滚刀箱有限元仿真模型,仿真求解得到了立柱模态及谐响应参数。通过立柱动态响应的振动频率与变形量分析,得到了滚齿机加工时立柱设计结构应避开的共振频率范围,揭示了立柱振动变形量的变化规律,提出了立柱结构设计与安装方法的改进建议,为大型数控滚齿机部件的设计优化提供了理论依据与参考。
In order to avoid influence of cutting vibration on gear machining precision, it is neces- sary to simulate analysis the stiffness characteristic and harmonic responses of columns for large- scale NC gear hobbing machines. Based on the structural characteristics of the column of gear hobbing machines, transmission principle of hob spindle and dynamics theory, the FE simulation models of column and hob-box were set up to simulate and calculate the paramter of mode and harmonic re- sponse of the column. After the analysis of the vibration frequency of dynamic response and deforma- tion,the variety law of vibration deformation was revealed for each order dynamics response simula- tion of the column. The results show that the range of resonance frequency can avoid the resonance of gear hobbing machines, the change law of column vibration deformation is revealed, the advice is pro- posed to improve the structure and assembly method of column, and the above researches offer theory gist and instructive reference value for the optimization design of component structure of large-scale NC gear hobbing machines.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2013年第11期1473-1479,共7页
China Mechanical Engineering
基金
国家杰出青年科学基金资助项目(50925518)
国家科技支撑计划资助项目(2012BAF13B09)
重庆市科委科技计划攻关重点项目(CSTC 2011AB3055)
关键词
大型滚齿机
立柱
模态
谐响应
有限元仿真
large- scale gear hobbing machine
column
modal
harmonic response
finite elementsimulation
