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首页> 外文会议>PVP-vol.493; American Society of Mechanical Engineers(ASME) International Mechanical Engineering Congress and Exposition; 20051105-11; Orlando,FL(US) >EFFECT OF MACHINE TOOL STRUCTURE DYNAMIC ON MACHINE CUTTING PERFORMANCES
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EFFECT OF MACHINE TOOL STRUCTURE DYNAMIC ON MACHINE CUTTING PERFORMANCES

机译：机床结构动力学对切削性能的影响

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摘要

Quality of machine tool structure is defined by it static and dynamic compliance. The effect of static stiffness at part shape and machine productivity is one of the reasons that structure static stiffness is used as a main criterion in machine design. The machine dynamic stiffness or compliance directly effect roundness (for example, profile of cross section in turning), surface finish, and indirectly tool life and life of machine components. These effects are defined by structure resistance to transmit vibration in cutting zone or other points of interest in machine tool structure. Dynamic compliance defines accuracy of machining, because it stipulates how machine response to any exciting force, occurring inside and outside machine structure. Dynamic compliance limits the productivity of cutting because it defines maximum depth of cut that may be achieved at a machine in particular set up. The goal of dynamic analysis is to find parameters of the structure that have dominant effect at it dynamic compliance and improve structure based at this information. Usually dynamic analyses required more complicated methodological approach because of coupling between different modes of vibration. The methodology of dynamic analysis of machine tool is illustrated by analysis of mobile spindle module and turning center. The obtained theoretical results are compared with actual testing data.
机译：机床结构的质量由其静态和动态合规性来定义。静态刚度对零件形状和机器生产率的影响是将结构静态刚度用作机器设计的主要标准的原因之一。机器的动态刚度或柔度会直接影响圆度（例如，车削时的横截面轮廓），表面光洁度，并间接影响工具的寿命和机器零件的寿命。这些影响由在切割区域或机床结构中其他关注点传递振动的结构阻力定义。动态顺应性定义了加工的精度，因为它规定了机械如何响应机械结构内部和外部发生的任何激振力。动态顺应性限制了切割的生产率，因为它定义了在特定设备上可以实现的最大切割深度。动态分析的目标是找到对结构的动态依从性起主要作用的参数，并根据此信息改进结构。由于不同振动模式之间的耦合，通常动态分析需要更复杂的方法论方法。通过对移动主轴模块和车削中心的分析，说明了机床动态分析的方法。将获得的理论结果与实际测试数据进行比较。

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