Mechanical micro-cutting is one of the advanced processes for manufacturing of micro-parts. During the micro-cutting process, the thickness of the uncut chip is very close to the tip radius of the tool. The cutting edge is used to cut and extrude the workpiece. In this paper, the experiments and simulations of macro-machining nickel alloy are compared, and the process of micro-cutting nickel alloy is simulated and analyzed. In this study, four cutting edge radii, three cutting speeds, six hot cutting temperatures, and a constant depth of cut are used. The radius of the cutting edge of different sizes is theoretically analyzed and verified by simulation of material flow state, temperature, stress, strain, and cutting force. The results show that the material separation points are very close together at different cutting edge radii. The change in the radius of the cutting edge changed the contact state of the material in the cutting area, which has a large influence on the temperature and cutting force. The effects of different cutting speeds and hot working temperature on the machining process are also discussed.

中文翻译：

---

Inconel 718热微切削不同切削刃半径的数值分析

机械微切割是制造微型零件的先进工艺之一。在微切削过程中，未切削切屑的厚度非常接近刀具的刀尖半径。切削刃用于切割和挤压工件。本文通过对宏观加工镍合金的实验和模拟进行对比，并对微观切削镍合金的过程进行了模拟和分析。在这项研究中，使用了四个切削刃半径、三个切削速度、六个热切削温度和一个恒定的切削深度。通过对材料流动状态、温度、应力、应变和切削力的模拟，对不同尺寸的切削刃半径进行了理论分析和验证。结果表明，材料分离点在不同的切削刃半径处非常靠近。切削刃半径的变化改变了切削区材料的接触状态，对温度和切削力有较大影响。还讨论了不同切削速度和热加工温度对加工过程的影响。