Ultra-precise high-speed milling

超精密高速铣削

• 批准号: 233419797
• 负责人: Professor Dr.-Ing. Ekkard Brinksmeier
• 金额: --
• 依托单位: Fachgebiet Fertigungsverfahren
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/233419797?language=en
• 关键词: Ultra; precise; speed; milling

The exceedingly long processing times involved in raster milling of non-rotationally symmetric optical surfaces with single crystal diamond tools can be cut down by a factor of 10 by applying ultra-precision high-speed milling. While in the first funding period high-speed milling of metal substrates has been investigated, the second funding period is devoted to the ductile machining of brittle materials, in particular the high-speed diamond milling of IR-materials like singe crystal germanium, silicon, zinc selenide and zinc sulfide. The aim of the project is the verification of an increase of the critical depth of cut and a transition to adiabatic shearing with increasing cutting speed in the ductile material removal mode leading to a reduction of tool diamond wear as in the case of metal substrates. Finally, the technological basis established in both funding periods shall be applied for realizing high-speed raster milling and spiral milling including the components and methods developed within the other research projects of the research group using the common experimental platform with ultraprecise electromagnetic bearings.

采用超精密高速铣削技术，可以将单晶金刚石刀具光栅铣削非旋转对称光学表面所需的极长加工时间缩短10倍。在第一个资助期内，研究了金属基底的高速铣削，第二个资助期致力于脆性材料的韧性加工，特别是单晶锗、硅、硒化锌和硫化锌等红外材料的高速金刚石铣削。该项目的目的是验证临界切削深度的增加以及在韧性材料去除模式下随着切削速度的增加而向绝热剪切的过渡，从而减少工具金刚石磨损，如在金属基底的情况下。最后，在两个资助期内建立的技术基础将应用于实现高速光栅铣削和螺旋铣削，包括在研究小组的其他研究项目中使用超精密电磁轴承的通用实验平台开发的组件和方法。