DHC INOX end mills ensure vibration-free cutting

This development creates the benefit of reducing vibration under heavy cutting by creating the effect of a continuously modified pitch to the cutting edge. The tools have been specifically developed to overcome problems associated with vibration and poor surface finish that is mainly caused from the generation of harmonic oscillation when circumferentially milling materials such as titanium, nickel-based alloys, stainless steels and short-chipping aluminium. Due to their geometry, DHC INOX end mills can be used for both rough and finishing passes at very high rates of feed per tooth. And by creating an uneven pattern of helix angles set at 41 and 44 deg on sequential cutting edges of the tool, cutting forces are also reduced, as any chips produced will have different cross-sectional areas. The DHC INOX range is available between 4 mm and 20 mm diameter, and cutters have internal coolant feed that exits through radial ports. This feature makes the cutters ideal for plunge milling, production of extremely thin, dimensionally stable webs, as well as deep slots in a ratio up to double the diameter of the tool. Each tool is produced from micro grain carbide with a wear resistant and temperature stable PVD coating. The rake angle is large which also helps to reduce cutting forces and by optimising the chip void, evacuation of material from the cutting zone is well catered for. A short version of the cutter range is also available that, due to its increased rigidity, allows up to a 40% increase in the applied feed rate. On a recent machining trial carried out on stainless steel, a 12 mm diameter DHC 1550C slot end mill was run at 90 m/min with 18 mm depth of cut at a feed rate of 290 mm/min using through-the-tool coolant supply to create a deep, very thin walled slot.