Efficient abrasive water jet milling for near-net-shape fabrication of difficult-to-cut materials
Efficient abrasive water jet milling for near-net-shape fabrication of difficult-to-cut materials
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DOI：
10.1007/s00170-020-06074-3
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发表时间：
2020-10
期刊：
影响因子：
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通讯作者：
E. Uhlmann;C. Männel;T. Braun
中科院分区：
文献类型：
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作者：
E. Uhlmann;C. Männel;T. Braun
高强度密度比材料的使用可以提高效率，因此许多应用都需要这种材料，特别是在航空航天和其他机动部门。然而，由于刀具磨损很高，这些典型的难加工材料的加工对传统制造技术构成了挑战。磨料水射流加工具有刀具磨损小、与材料无关等优点，是加工难加工材料的一种很有前途的替代加工技术。然而，在对材料进行切割时，AWJ加工仅限于可产生的几何形状。这一限制可以通过AWJ铣削操作解决，另一方面，AWJ铣削操作是耗时的。为了应对这一挑战，本文提出并研究了一种改进的AWJ铣削操作，目的是扩大可生产的几何形状。此操作包括从工件的不同侧面插入的两个切口面，它们在切口面相交。因此，一块材料被分离，而切割的材料不会完全被切碎。因此，该操作具有较高的聚集物去除率。本文研究并评价了不同深度开槽对钛铝化物TnM-B1的影响。此外，还介绍了一种补偿这些影响的方法，从而可以提高有效的AWJ铣削的可产生几何形状。
The utilization of materials with high strength to density ratio enables efficiency improvements and is therefore demanded for many applications, particularly in the aerospace and other mobility sectors. However, the machining of these typically difficult-to-cut materials poses a challenge for conventional manufacturing technologies due to the high tool wear. Abrasive water jet (AWJ) machining is a promising alternative manufacturing technology for machining difficult-to-cut materials, since the tool wear is low and material independent. However, AWJ machining is limited regarding the producible geometries when conducting cuts through a material. This limitation can be resolved with AWJ milling operations which on the other hand are time-consuming. To approach this challenge, an enhanced AWJ milling operation is presented and investigated in this paper with the aim to expand the producible geometries. This operation consists of two kerfs, inserted from different sides of the workpiece, which intersect at their kerf ground. Consequently, a piece of material is separated without the cut material being entirely chipped. Thus, the operation possesses a high aggregated material removal rate. The investigations presented in this paper show and evaluate the effects that occur during the milling of kerfs with variable depths on titanium aluminide TNM-B1. Furthermore, a method to compensate these effects is introduced and thus the producible geometries for effective AWJ milling could be enhanced.