The R+D-Team of SCHUMACHER Precision Tools, Germany, has completed the development of a new threading tool for machining sophisticated stainless workpiece materials (ISO-Groups M1 and M2). The project comprised a definition of the tool requirements, its design and the simulation of new digital geometries in various production environments.
Based on an analysis of the most frequent challenges when machining stainless steels, SCHUMACHER's R+D Team has developed the requirements for a completely new geometry. Drawing upon a technical university from Germany and Schumacher‘s modules ToolDesign and ToolSimulation, the following characteristics were defined:
Polar – Special Geometry for Stainless Steel.
During the 18 - month development project POLAR, the existing geometry for stainless steels was completely re-designed and fine-tuned to the new target criteria in all tool properties. The previous geometry for stainless steel will keep its place in Schumacher‘s product range - the new develoment is particularly designed for serial production of sophisticated materials.
The POLAR geometry is applied on a PM-Substrate and features a new combination of cutting angle and relief, a particular conicity of the cutting part and a modified flute design to improve chip control. The standard version is equipped with very hard PVD-Coating (TiCN-Variant). The blind hole version moreover has a 45° spiral flute and an extended flute length.
M2: Martensitic - Ferritic.
P1: Ferritic - Martensitic.