Ultraprecision Cutting Process of Anisotropic Super-elastic Alloy

各向异性超弹性合金超精密切削加工

• 批准号: 11650131
• 负责人: OHASHI Kazuhito
• 金额: $ 2.18万
• 依托单位: OKAYAMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650131/
• 关键词: Ultraprecision cutting; Anisotropic super-elastic alloy; Diamond tool; Geometrical accuracy; Cutting heat; Coefficient of thermal expansion; Feed rate; 温度上昇

The purpose of this research is to obtain fundamental information for making clear the generation mechanism of ultraprecision machined surface of anisotropic super-elastic alloy with a diamond tool. Especially, in the case of ultraprecision cutting of anisotropic super-elastic alloy, it is difficult to finish the surface with high geometrical accuracy. Then some factors generating geometrical accuracy in ultraprecision cutting of Al-Mg alloy are investigated by analyzing finished surface profile and cutting heat in ultraprecision cutting process. Main conclusions obtained in this research are as follows : (1) Workpiece surface is finished in a concave profile with convex center in ultraprecision cutting. (2) Such profile of finished surface is generated by the thermal expansion of diamond tool and workpiece with cutting heat or spring back of cutting edge. (3) The maximum temperature rise at cutting point runs to 130℃. (4) The profile of finished surface is as same as that simulated with temperature rise and coefficient of thermal expansion of cutting tool.

本研究的目的是为阐明各向异性超弹性合金金刚石刀具超精密加工表面的形成机理提供基础资料。特别是在各向异性超弹性合金的超精密切削加工中，难以获得高几何精度的表面。通过对铝镁合金超精密切削加工表面形貌和切削热的分析，研究了影响铝镁合金超精密切削加工几何精度的因素。主要结论如下：（1）超精密切削加工中，工件表面是以中心凸的凹轮廓加工而成。(2)这种加工表面轮廓是由金刚石刀具和工件在切削热作用下的热膨胀或切削刃的回弹产生的。(3)切割点最高温升达130℃。(4)加工表面轮廓与考虑刀具温升和热膨胀系数时的模拟结果一致。

项目成果

Toshikatsu NAKAJIMA: "Generation Factor of Surface Roughness in Ultraprecision Cutting of Al-Mg Alloy (3rd.Report)"Proceeding of The Spring Conference on the Japan Society for Precision Engineering. 124 (2000)

中岛俊胜：《铝镁合金超精密切削中表面粗糙度的产生因素（第三次报告）》日本精密工程学会春季会议论文集。

中島利勝: "Al-Mg合金の超精密切削面粗さの創成要因に関する研究(第3報)-結晶粒界段差に及ぼす工具逃げ角の影響-"2000年度精密工学会春季大会学術講演会講演論文集. (発表予定). (2000)

中岛俊胜：《Al-Mg合金中产生超精密切削表面粗糙度的因素研究（第3次报告）-刀具后角对晶界台阶的影响-》2000年日本精密工程学会春季学术会议演讲集论文（预定的演示）（2000）。

中島利勝: "Al-Mg合金の超精密切削面粗さの創成要因に関する研究(第3報)-結晶粒界段差に及ぼす工具逃げ角の影響-"2000年度精密工学会春季大会学術講演会講演論文集. 124 (2000)

中岛俊胜：《铝镁合金超精密切削表面粗糙度产生因素的研究（第3次报告）-刀具后角对晶界台阶的影响-》2000年日本精密工程学会春季会议论文集演讲124（2000）