高速电主轴在切削过程中的振动分析与研究  

Vibration analysis and research of high speed motorized spindle under the influence of cutting force

作　　者：白向娟 李积元 苟卫东[2] BAI Xiangjuan;LI Jiyuan;GOU Weidong(College of mechanical engineering Qinghai University,Xining 810016,China;Qinghai No.1 CNC Machine Tools Co.,Ltd.,Xining 810016,China)

机构地区：[1]青海大学机械工程学院,青海西宁810016 [2]青海一机数控机床有限责任公司,青海西宁810016

出　　处：《青海大学学报（自然科学版）》2018年第1期61-69,74,共10页Journal of Qinghai University(Natural Science)

基　　金：青海省科学技术厅计划项目(2015-GX-Q18A;2015-GX-Q09)

摘　　要：针对高速电主轴在高速切削过程中主轴轴端的振动问题,文中通过建立主轴轴端在受高速切削力的条件下的拉刀—主轴—轴承双转子系统振动动力学模型,并对电主轴的固有频率与振型进行有限元分析,模拟主轴在切削力的作用下的响应,最后通过测试电主轴的振动量完成对振动分析结果的验证。结果表明:总切削力在垂直于假定工作平面方向上的分力对主轴振动的影响最大,实现了对主轴振动的更有效的分析方法。该方法对提高主轴加工精度有一定的指导作用。Aiming at the vibration problem of high speed motorized spindle in high speed cutting process,a dual-rotor vibration dynamic model of broach-spindle-bearing is established.The finite element analysis of the spindle natural frequencies and vibration modes are carried out and the response of the motorized spindle under the influence of cutting force is simulated.The results of vibration analysis are verified by testing the vibration of the motorized spindle.It is shown that the total cutting force has the greatest influence on the vibration of the spindle in the direction perpendicular to the assumed plane of work.The proposed method has a certain guiding role for improving the machining accuracy of the spindle.

关 键 词：高速切削 电主轴轴端振动 有限元分析 振动测试 

分 类 号：TH133.3[机械工程—机械制造及自动化]