Project Details
Projekt
Ultra-precise high-speed milling
Applicant
Professor Dr.-Ing. Ekkard Brinksmeier
Subject Area
Metal-Cutting and Abrasive Manufacturing Engineering
Term
from 2014 to 2020
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 211652309
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.
DFG Programme
Research Units
