Prediction of the 3D surface topography after ball end milling and its influence on aerodynamics
Prediction of the 3D surface topography after ball end milling and its influence on aerodynamics
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DOI：
10.1016/j.procir.2015.03.049
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
B. Denkena;V. Böß;D. Nespor;Philipp Gilge;S. Hohenstein;J. Seume
中科院分区：
文献类型：
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作者：
B. Denkena;V. Böß;D. Nespor;Philipp Gilge;S. Hohenstein;J. Seume
铣削工件的表面形貌通常决定了其性能。一个例子是涡轮机发动机中的叶片，其中地形限定了流动损失。这种类型的复杂产品通常由球头米尔斯机加工，用于制造或维修。文献提供了各种模型类型来预测表面形貌，以设计加工工艺，而无需事先实验。最精确的模型使用过程的真实的运动学并将刀具与工件混合。但这种类型的表面预测忽略了现实和模拟之间的差异，由于振动，刀具崩刃等。本文提出了一种组合的方法，使用的运动学地形从加工模拟，并增加了随机地形的经验数据的基础上。可以看出，随机地形的使用极大地影响了流动损失，因此不能忽略。
The surface topography of milled workpieces often defines their performance. One example is blades in turbine engines, where the topography defines the flow losses. This type of complex goods is often machined by ball end mills, either for manufacture or repair. The literature offers various model types to predict the surface topography in order to design a machining process without prior experiment. The most accurate models use the real kinematics of the process and blend the tool with the workpiece. But this type of surface prediction ignores the differences between the reality and the simulation due to vibrations, tool chipping etc. This paper presents a combined approach using the kinematic topography from the machining simulation and adds a stochastic topography based on empirical data. It could be shown, that the usage of the stochastic topography greatly affects the flow losses and thus cannot be ignored.