The latest Garant micro-milling cutters have a particularly tight tolerance band of only 0 to -0.005 mm, enabling milling operations to a precision of only a few microns. Due to the expansion of the range, high-performance tools can now be ordered for an even broader spectrum of materials in the tool-making and mould-making arenas. The first micro-milling cutters of the new generation were produced in autumn 2017, for machining aluminium and copper alloys, as well as graphite and fibre-reinforced composites.
Hoffman’s latest Garant micro-mills are available in three versions: sharp-edged milling cutters, torus cutters and copy slot drills. Special micro-geometries make the cutting edges extremely stable, while optimised face and tip angles coupled with enlarged flutes regulate chip formation and ensure efficient chip evacuation.
According to Hoffman, the latest generation of Diabolo coating imparts extremely high wear resistance. This multi-layer coating of titanium silicon nitride is 1 to 2 micron thick and is said to ensure outstanding results, even on electrolytic copper.
