Simulation of milling tool vibration trajectories along changing engagement conditions
Simulation of milling tool vibration trajectories along changing engagement conditions
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DOI：
10.1016/j.ijmachtools.2006.09.030
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发表时间：
2007-07
影响因子：
14
通讯作者：
T. Surmann;D. Enk
中科院分区：
文献类型：
--
作者：
T. Surmann;D. Enk
本文介绍了一个仿真系统，该系统能够将啮合条件建模为任意NC程序的句法几何模型。这种建模方法允许将刀具变形反馈到切屑形状的模型中，从而能够模拟随着啮合条件的变化而再生的刀具振动。来自计算机图形学领域的方法允许快速分析切屑形态以及快速切削力计算，这是加速该时域仿真系统所必需的。实验表明，即使在径向浸没突变的情况下，刀具轨迹的计算值与实测值也是一致的。此外，应用了工件的几何模型，该模型能够表示振动刀具产生的表面结构。因此，可以逼真地模拟和渲染抖动痕迹以及随着啮合条件的变化而发生的效果。
This paper presents a simulation system, which is able to model engagement conditions as a syntactical geometric model along arbitrary NC-programs. This modeling approach allows the feedback of tool deflections into the model of the chip form, which enables the simulation of regenerative tool vibrations along changing engagement conditions. Methods from the field of computer graphics allow a fast analysis of the chip forms as well as a fast cutting force calculation, which is essential to speed up this time-domain simulation system. Experiments show a good agreement of calculated and measured tool trajectories even along sudden changes of the radial immersion. Furthermore, a geometric model of the workpiece is applied, which is able to represent the surface structure resulting from a vibrating cutting tool. Thereby, chatter marks as well as the effects that occur along changing engagement conditions can be modelled and rendered realistically.