侧面
GSM演进的增强数据速率
机械加工
有限元法
因科镍合金
切削液
刀具
机械工程
研磨
计算流体力学
材料科学
面子(社会学概念)
结构工程
几何学
工程类
机械
冶金
数学
物理
社会学
电信
社会科学
合金
人类学
作者
Ekrem Oezkaya,Milan Bücker,Dirk Biermann
标识
DOI:10.1016/j.ijmecsci.2020.105650
摘要
In this paper, a combination of Finite Element Method (FEM) and Computational Fluid Dynamics (CFD) simulations is presented. They were performed in order to develop an optimised flank face design for twist drills used for machining Inconel 718. This modification consists of a retraction behind the cutting edge which is ground into the tool flank face. It results in an increased free volume behind the cutting edge which can then be filled with cutting fluid, but in consequence, there also is a decrease in cutting material stabilising the cutting edge. Therefore, sufficient mechanical strength of the remaining cutting edge had to be ensured. At the same time, the increase in cutting fluid flow behind the cutting edge also helps to protect the remaining cutting material from the high temperatures which occur when machining nickel-based alloys such as Inconel 718. After the simulation-based findings had been transferred to real tools modified by grinding, subsequent experimental investigations could show that twist drills with a modified flank face reached tool life up to five times longer compared to standard tools.
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