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首页> 外文期刊>Key Engineering Materials >Evaluation of Machinability under Various Cutting Conditions in High-Speed Machining Using Ball Nose-End Mills - Effects of Cutter Orientation and Cutting Environments -
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Evaluation of Machinability under Various Cutting Conditions in High-Speed Machining Using Ball Nose-End Mills - Effects of Cutter Orientation and Cutting Environments -

机译：球鼻立铣刀在高速切削中各种切削条件下的切削性能评估-切削刀具方向和切削环境的影响-

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摘要

High-speed machining generates concentrated thermal/frictional damage at the cutting edge and rapidly decreases the tool life. This paper is aimed at determining the effect of cutter orientation and the cutting environment on tool life, tool wear mechanisms when down milling. In this paper, the experiments were carried out in various tool paths and cutting environments, such as dry, wet and compressed chilled air, tool life were measured to evaluate machinability in high-speed milling of difficult-to-cut material and die steel. Tool life was measured in horizontal upwards, horizontal downwards, vertical upwards and vertical downwards. In addition, tool life was measured in dry, wet and compressed chilled air. For this study, a compressed chilled-air system was manufactured. The results show that a horizontal cutter orientation provided a longer tool life than a vertical cutter orientation. With respect to the cutting environment, compressed chilled air increased tool life. However, the wet conditon decreased tool life due to the thermal shock caused by excessive cooling in high-speed milling and the compressed chilled air had little effect.
机译：高速加工会在切削刃上产生集中的热/摩擦损伤，并迅速缩短刀具寿命。本文旨在确定刀具方向和切削环境对下铣削时刀具寿命，刀具磨损机理的影响。本文在各种刀具路径和切削环境（例如干燥，湿润和压缩冷空气）中进行了实验，测量了刀具寿命，以评估难切削材料和模具钢在高速铣削中的切削性能。刀具寿命以水平向上，水平向下，垂直向上和垂直向下测量。另外，在干燥，湿润和压缩的冷空气中测量工具寿命。为了进行这项研究，制造了压缩冷空气系统。结果表明，水平刀具定向比垂直刀具定向提供了更长的刀具寿命。关于切削环境，压缩冷空气可延长刀具寿命。但是，由于高速铣削中过度冷却导致的热冲击，湿态降低了刀具寿命，而压缩冷空气的影响很小。

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