五轴联动机床主运动构件重复碰撞瞬态动力学特性分析  

Transient Dynamic Characteristics Analysis for Repeated Collision of Main Motion Components of a Five Axis Linkage Machine Tool

作　　者：刘洋[1] LIU Yang(College of Mechanical Engineering and Automation,Shenyang Institute of Technology,Fushun Liaoning 113122,China)

机构地区：[1]沈阳工学院机械工程与自动化学院,辽宁抚顺113122

出　　处：《机床与液压》2024年第11期226-230,共5页Machine Tool & Hydraulics

摘　　要：为了提高五轴联动机床的整体性能,提出五轴联动机床主运动构件重复碰撞瞬态动力学特性分析方法,对其主运动构件的动力学特性进行分析。建立五轴联动机床的运动学模型,对其运动学特性展开分析;根据机床的运动学特性,建立柔性杆重复碰撞系统以及碰撞过程的动力学方程;最后在St.VENANT杆波动理论的基础上分析柔性杆在多次碰撞和分离过程中的瞬态动力学特性。实验结果表明:与其他方法对比,所提方法能够准确获得柔性杆的变形、位移和撞击力变化情况,且具有较高的分析精度。In order to improve the overall performance of the five axis linkage machine tool,a transient dynamic analysis method for repeated collision of the main motion components of a five axis linkage machine tool was proposed to analyze the dynamic characteristics of the main motion components.The kinematics model of five axis linkage machine tool was established,and its kinematics characteristics were analyzed.According to the kinematics characteristics of the machine tool,the repeated collision system of the flexible rod and the dynamic equations of the collision process were established.Finally,based on the wave theory of St.VENANT rods,the transient dynamic characteristics of flexible rods during multiple collisions and separation processes were analyzed.The experimental results show that comparing with other methods,the proposed method can accurately obtain the deformation,displacement,and impact force changes of the flexible rod,and has high analytical accuracy.

关 键 词：五轴联动机床 柔性杆 运动学方程 重复碰撞 瞬态动力学特性 

分 类 号：TH13[机械工程—机械制造及自动化] O313[理学—一般力学与力学基础]