摘要
以YK7350B数控成形摆线轮磨齿机为研究对象,研究在高速转动状态下,动态磨削转矩和自身不平衡量引起的电主轴振动问题。通过传递矩阵法,建立了磨削电主轴系统的动态数学模型,并结合电主轴的具体参数,推算出主轴的固有频率。继而利用有限元分析软件得到了6阶模态振型和频率,最后通过进行了实际磨削实验,收集了正常加工条件下的电主轴振动加速度数据。实验结果表明:电主轴的振动特性在磨削Z方向影响最大,X方向次之,并随着转速的提升呈线性增长。此结论为后续电主轴的振动原理分析以及减小振动、提高摆线轮齿面加工质量提供了较为科学的数据理论支撑。
Taking YK7350B NC forming cycloid gear grinding machine as the research object,the vibration of motorized spindle caused by dynamic grinding torque and self-unbalance under the condition of high-speed rotation was studied.Through the transfer ma⁃trix method,the dynamic mathematical model of grinding motorized spindle system was established,and the natural frequency of the motorized spindle was calculated by combining the specific parameters of the motorized spindle.Then the vibration mode and frequency of the sixth mode were obtained by using the finite element analysis software.Finally,the vibration acceleration data of the electric spindle under normal working conditions were collected through the actual grinding experiment.The experimental results show that the vibration characteristic of spindle has the greatest influence on the Z direction of grinding,followed by the X direction,and the vibra⁃tion characteristic increases linearly with the increase of grinding speed.This conclusion provides theoretical support for the subsequent vibration principle analysis of motorized spindle,vibration reduction,machining quality improvement of cycloidal gear tooth surface.
作者
王小东
王会良
苏建新
WANG Xiaodong;WANG Huiliang;SU Jianxin(School of Mechatronics Engineering,Henan University of Science&Technology,Luoyang Henan 471003,China;China Collaborative Innovation Center of Machinery Equipment Advanced Manufacturing Henan Province,Luoyang Henan 471003,China)
出处
《机床与液压》
北大核心
2022年第4期13-18,共6页
Machine Tool & Hydraulics
基金
国家自然科学基金面上项目(51775171)。
关键词
电主轴
振动
动态数学模型
传递矩阵法
Electric spindle
Vibration
Dynamic mathematical model
Transfer matrix method
