Grinding of riblets with "beaver tooth" multi-layer tools
Grinding of riblets with "beaver tooth" multi-layer tools
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用“海狸齿”多层工具磨削肋条
DOI：
10.1016/j.procir.2018.05.089
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Denkena
中科院分区：
文献类型：
--
作者：
Hockauf;Denkena
为了减少涡轮机械部件中的摩擦，在压缩机叶片或泵叶轮上引入沟槽。与滚花、激光或铣削操作相比，磨削工艺在加工肋结构时能够实现更高的生产率。通常，轮廓磨削工具用于创建受鲨鱼皮启发的这种结构。不幸的是，传统的磨削工具必须连续地修整以在圆周表面中保持期望的轮廓。为了避免耗时的修整过程并实现自锐效果，开发了一种创新的多层刀具概念。该工具由两种类型的薄聚酰亚胺层组成。第一种类型包含磨料，第二种是不含磨料的支撑层。这些层在一个特殊的制造过程中交替堆叠，并在磨削过程中充当一个整体的tool.本文提出的研究的目的是找到一个最佳的参数设置，以生产性地利用自锐效应的脊结构。通过使用大部分的磨削工具体积，最佳设置允许在没有任何修整过程的情况下进行磨削过程。首先，制造过程的重点是创建明确划分的支持和研磨工具层。此外，研究还揭示了磨削参数与刀具中间支承层缩进量的关系。这种缩进对于在AISI 420工件表面形成沟槽结构非常重要。
To reduce friction in turbo machinery components, riblets are induced on compressor blades or pump impellers. Here, the grinding process enables a higher productivity in machining of riblet structures compared to knurling, laser or milling operations. Usually, profiled grinding tools are used to create such structures inspired by sharkskin. Unfortunately, conventional grinding tools have to be dressed continuously to keep the desired profile in the circumferential surface. To avoid the time-consuming dressing process and to enable a self-sharpening effect, an innovative multi-layer tool concept is developed. The tool consists of two types of thin polyimide layers. The first type contains abrasives and the second is a support layer without abrasives. These layers are piled alternately in a special manufacturing process and act like a monolithic tool in grinding process.The aim of the investigations presented in this paper is to find an optimal parameter setting to produce riblet structures productively by using the self-sharpening effect. The optimal setting allows a grinding process without any dressing process by using a large part of the grinding tool volume. At first, the manufacturing process is focused to create clearly divided support and abrasive layers of the grinding tool. Furthermore, the investigation shows the relationship between grinding parameters and the setback of the supporting layer in the middle of the tool. This setback is important for the creation of riblet structures in the surface of AISI 420 workpieces.
弯曲路径上的肋条磨削
DOI：
10.4028/www.scientific.net/msf.874.28
发表时间：
2016
期刊：
Materials Science Forum
影响因子：
--
作者：
B. Denkena;T. Grove;Jan Harmes
通讯作者：
Jan Harmes