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Milling of Fir-Tree Slots in Allvac 718 plus

机译：在Allvac 718 plus中铣削杉木树槽

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For the machining of profiled grooves in turbine discs made out of nickel based alloys, broaching is still state of the art. However, the broaching process entails some disadvantages like high costs and long delivery times for the machine tools and the broaches in combination with inflexibility with regard to the groove geometry and machining task. An alternative to the broaching process is the integration of the profile slotting on a 5-axis milling center. This paper deals with an approach for machining a fir-tree slot via different milling process chains. The two roughing strategies, ceramic side milling and carbide end milling, are depicted with regard to tool wear and the economy. The finished fir-tree slot will be evaluated in terms of dimensional stability. In addition, the possibility of finish broaching on a five-axis machine tool is shown.
机译：为了在由镍基合金制成的涡轮盘中加工异型槽，拉削仍然是现有技术。然而，拉削过程具有一些缺点，例如机床和拉刀的高成本和长交货时间，以及在凹槽几何形状和加工任务方面的不灵活性。拉削工艺的替代方法是在5轴铣削中心上集成轮廓槽。本文介绍了一种通过不同的铣削加工链加工枞树槽的方法。关于刀具磨损和经济性，描述了两种粗加工策略，即陶瓷侧铣和硬质合金立铣。成品枞树槽将根据尺寸稳定性进行评估。此外，还显示了在五轴机床上进行精加工的可能性。

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