Go with the flow

According to Mitsubishi Materials, the innovative triangular shaped coolant holes designed into its MMS drill have greatly improved coolant flow where it matters most – at the cutting point of the drill.

Extensive flow dynamic research revealed not just the benefits of extra volume, but also the way in which the coolant flowed more efficiently from the hole. The combination of extra flow and improved delivery to the cutting point is critical for continuous high performance when cutting notoriously ‘sticky' stainless steels.

At the cutting edge itself, curved edge geometry is used similar to that of its successful counterpart the MPS drill. In combination with this, optimised flute geometry for effective chip curling and chip disposal has been incorporated into the design. Together with suitable flank grinding to eliminate friction, significantly enhanced, reliable high feed machining of stainless steels is now made possible.

A brand new PVD coating, DP7020, based on Mitsubishi's proprietary Miracle Technology adds the final feature towards higher drilling productivity. The AlTiN base coating layer is supplemented with a TiN top layer for added wear resistance and when considering stainless steel drilling, the all important extra lubrication properties provided by the extra TiN layer combats chip welding and material pick up on the flank and cutting edges.

The drill is available as a stock standard in short and long flute types from 3mm to 14.05mm diameter in 0.1mm diameter increments, and also from stock from 14.5mm to 20mm diameter in 0.5mm size increments. All other diameters can be made to order.

Mitsubishi Materials
www.mitsubishicarbide.com