Investigation on Direction Dependency of Tool-Workpiece Compliance of Machine Tool
Investigation on Direction Dependency of Tool-Workpiece Compliance of Machine Tool
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DOI：
10.1016/j.procir.2016.03.134
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
D. Kono;A. Matsubara
中科院分区：
文献类型：
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作者：
D. Kono;A. Matsubara
从三维角度研究了机床刀具-工件柔度的方向依赖性。刀具-工件柔度定义为刀具和工件之间相对位移对切削力的频率响应。对立式加工中心的刀-工件柔度进行了测量。使用极坐标图讨论了顺应性大小的方向依赖性。Z（垂直）方向上的顺应性小于XY（水平）方向上的顺应性。在X方向上的柔度的最大值几乎是在Y和Z方向上的柔度的最大值的两倍。讨论了频率对方向依赖性的影响。在高于250 Hz的频率范围内，XY平面中的方向依赖性小。这可以通过主轴关于X和Y方向的对称性来解释，因为刀具-工件相对位移在高频范围内由刀具位移主导。
The direction dependency of tool-workpiece compliance of machine tool was investigated in three dimensions. The tool-workpiece compliance is defined as the frequency response of the relative displacement between the tool and the workpiece to the cutting force. The tool-workpiece compliance of a vertical type machining center was measured. The direction dependency of the compliance magnitude was discussed using the polar plot. The compliance in the Z (vertical) direction was smaller than that in the XY (horizontal) directions. The maximum value of the compliance in the X direction was almost twice as large as those in the Y and Z directions. The influence of the frequency on the direction dependency was also discussed. The direction dependency in the XY plane was small in the frequency range higher than 250 Hz. This can be explained by the symmetry of the spindle about the X and Y directions because the tool-workpiece relative displacement was dominated by the tool displacement in the high frequency range.