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首页> 外文期刊>Production Engineering >Influence of the cutting edge rounding on the chip formation process: Part 1. Investigation of material flow, process forces, and cutting temperature
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Influence of the cutting edge rounding on the chip formation process: Part 1. Investigation of material flow, process forces, and cutting temperature

机译：切削刃倒圆对切屑形成过程的影响：第1部分。研究材料流动，过程力和切削温度

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摘要

In order to meet the ever-increasing demand for high quality and low cost products, machining processes with geometrically defined cutting edges such as high speed cutting, or hard turning are being used. Due to the fact that cutting is accomplished through a physical interaction between the cutting edge and the workpiece, the characteristics of the cutting edge itself play a key role in influencing the machining process, which determines the product quality and the tool life. As a result, cutting edge design has attracted the focus of many researchers, and crucial improvements have been achieved. Rounded cutting edges have been found to improve the tool life, and the product quality. However, to better understand the impact of prepared cutting edges on the aspects of the machining processes, and to produce tailored cutting edges for specific load profiles, further investigation on the influence of the cutting edge design on the machining processes needs to be carried out. In this study, the effect of symmetrically and asymmetrically rounded cutting edge on the material in the vicinity of the cutting edge has been investigated using finite element simulation techniques. The results obtained from this investigation show that process forces and material flow under the flank face are mainly influenced by the micro-geometry Sα. However, the magnitude and the location of maximum nodal temperature are influenced by Sα as well as Sγ.
机译：为了满足对高质量和低成本产品不断增长的需求，正在使用具有几何形状定义的切削刃的加工工艺，例如高速切削或硬车削。由于切削是通过切削刃和工件之间的物理相互作用完成的，切削刃本身的特性在影响加工过程中起着关键作用，切削过程决定了产品质量和刀具寿命。结果，前沿的设计吸引了许多研究人员的关注，并且已经取得了重要的进步。已经发现圆形的切削刃可以改善刀具寿命和产品质量。但是，为了更好地了解准备好的切削刃对加工过程的影响，并针对特定的负载曲线生成量身定制的切削刃，需要对切削刃设计对加工过程的影响进行进一步的研究。在这项研究中，使用有限元模拟技术研究了对称和不对称倒圆的切削刃对切削刃附近材料的影响。从这项调查中获得的结果表明，在侧面的加工力和材料流动主要受微观几何形状Sα的影响。但是，最大节点温度的大小和位置受Sα和Sγ的影响。

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  • 来源
    《Production Engineering》 |2012年第5期|p.329-338|共10页
  • 作者

    B. Denkena; J. Köhler; Mesfin Sisay Mengesha;

  • 作者单位

    Institute of Production Engineering and Machine Tools, Leibniz Universität Hannover, Hannover, Germany;

    Institute of Production Engineering and Machine Tools, Leibniz Universität Hannover, Hannover, Germany;

    Institute of Production Engineering and Machine Tools, Leibniz Universität Hannover, Hannover, Germany;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Cutting edge; FEM; Chip formation;

    机译：尖端;有限元;芯片形成;

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