高速电主轴转子系统无试重动平衡方法  

On-line Dynamic Balancing Method of High-speed Motorized Spindle without Test Weight

作　　者：王展 王旭 高士铁 张琦 WANG Zhan;WANG Xu;GAO Shi-Lin;ZHANG Qi(School of Mechanical Engineering,Shenyang Jianzhu University,Shenyang Liaoning110168,China;Shenyang Yunyuan Robot Technology Co.,Ltd.,ShenyangLiaoning110015,China)

机构地区：[1]沈阳建筑大学机械工程学院,辽宁沈阳110168 [2]沈阳云远机器人科技有限公司,辽宁沈阳110015

出　　处：《机电产品开发与创新》2023年第4期162-165,共4页Development & Innovation of Machinery & Electrical Products

基　　金：国家自然科学基金(52175107,52205117);东北大学航空动力装备振动及控制教育部重点实验室研究基金资助项目(VCAME202008)。

摘　　要：高速电主轴实际生产工程中不可避免地产生转子质量偏心引起振动,严重影响加工精度。因此本文针对高速电主轴转子系统的质量不平衡问题采用无试重动平衡方法对振动进行抑制。首先根据转子动力学理论建立电主轴转子系统动力学模型,以动力学方程为基础推导出转子系统无试重不平衡识别公式,通过对动力学方程求解得到转子系统的振动响应,代入到不平衡识别公式中即可求解出转子的校正量实现动平衡。然后对模型进行仿真分析,添加不同不平衡量采用无试重方法进行动平衡,分析平衡前后的时域、频域、轴心轨迹验证平衡效果。结果可知添加三种不平衡量平衡后的时域和一倍频振幅明显降低,轴心轨迹的长短轴明显减小,转子的振动有显著改善。In the actual production engineering of high-speed motorized spindle,the rotor mass eccentricity inevitably causes vibration,which seriously affects the machining accuracy.Therefore,this paper adopts the dynamic balance method without test weight to suppress the vibration of the high-speed motorized spindle rotor system.First,the dynamic model of the electrospindle rotor system is established according to the theory of rotor dynamics.Based on the dynamic equation,the identification formula of the unbalance of the rotor system without test weight is derived.The vibration response of the rotor system is obtained by solving the dynamic equation,and the rotor correction can be solved by substituting it into the unbalance identification formula to achieve dynamic balance.Then carry out simulation analysis on the model,add different unbalance and use the method without test weight for dynamic balancing,and analyze the time domain,frequency domain and axis center track before and after balancing to verify the balancing effect.The results show that the time domain and first harmonic amplitude of the rotor after adding three kinds of unbalance weights are significantly reduced,the major and minor axes of the shaft center track are significantly reduced,and the vibration of the rotor is significantly improved.

关 键 词：电主轴 动力学建模 动平衡 无试重 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]