• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

›› 2002, Vol. 38 ›› Issue (1): 31-34，6.

• 论文 • 上一篇    下一篇

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机床沿曲线高速加工时的运动学与动力学特性分析

陈金成;徐志明;钟廷修;蒋厚宗   

  1. 上海交通大学机械工程学院;上海交通大学
  • 发布日期:2002-01-15

ANALYSING KINEMATIC AND DYNAMIC PROPERTIES OF A MACHINE TOOL ALONG CURVED TOOL PATH IN HIGH MACHINING

Chen Jincheng;Xu Zhiming;Zhong Tingxiu;Jiang Houzong   

  1. Shanghai Jiaotong University
  • Published:2002-01-15

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摘要： 详细分析了刀具沿曲线加工时，刀具路径几何特性（位置、切向矢量、曲率）与机床的运动学特性（进给速度、加速度）以及动力学特性（伺服电动机驱动力、切削负载、磨擦力）之间的关系。并采用解析的方法，计算了在各轴加速度和伺服电动机驱动力约束条件下，机床沿曲线加工时的最大安全进给速度。分析结果表明刀具路径几何特性对机床的运动学和动力学特性有很在的影响。

关键词: 动力学, 高速加工, 进给速度, 数控机床, 运动学

Abstract: The relationships between geometrical properties of cutter path, including position, tangent and curvature, and kinematics and dynamics of a machine tool including feedrate, acceleration and driving force, are analyzed in detail. The analytical method of obtaining maximum safe feedrate along a curved cutter path with driving force and acceleration constraints is also introduced. The result shows there are great influences of geometrical properties of cutter path on the kinematics and dynamics of a machine tool.

Key words: CNC machine, Dynamics, Feedrate, High speed machining, Kinematics

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