Grinding of Riblets on Curved Paths
Grinding of Riblets on Curved Paths
复制标题
弯曲路径上的肋条磨削
DOI：
10.4028/www.scientific.net/msf.874.28
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Jan Harmes
中科院分区：
文献类型：
--
作者：
B. Denkena;T. Grove;Jan Harmes
用多个异形砂轮磨削筋条是一种减少表面流体摩擦的有效方法。在涡轮机械部件中，如泵叶轮或压气机叶片，由于在此类表面上的流动很少是线性的，所以肋片必须用弯曲的刀具轨迹进行研磨。这会导致生成的Riblet轮廓出现角度误差，因此需要使用直径较小的砂轮。由于砂轮尖端的横向应变，刀具磨损增加。因此，磨损的增加和对较小刀具直径的需要降低了工艺的效率。为了提高该工艺的经济可行性，本文研究了一种带切块刀片的结构化工艺。这种工具的修整操作是不必要的，因此减少了制造过程的非生产时间。此外，轮廓尖端磨损对生成的筋的纵横比没有负面影响，因为筋的几何形状由切屑叶片的厚度决定。
The grinding of riblets with multiple profiled grinding wheels is an efficient method to minimize the fluid friction on surfaces. In turbo machinery components, like pump impellers or compressor blades, the riblets must be ground with a curved tool path since the flow is rarely linear on such surfaces. This leads to angular errors in the generated riblet profiles and therefore requires the use of grinding wheels with smaller diameters. The tool wear increases due to lateral strain on the peaks of the grinding wheel. Consequently, the increased wear and the need of smaller tool diameters decrease the efficiency of the process. In this paper a structuring process with dicing blades was investigated in order to increase the economic viability of this process. A dressing operation for such tools is not necessary and thus reduces the non-productive time of the manufacturing process. Furthermore, profile tip wear has no negative effects on the aspect ratio of the generated riblets since the riblet geometry is determined by the thickness of the dicing blades.