WNT milling cutter light machining benefits

The WNT Master-Mill A2740 and A2790 milling systems feature extremely positive cutting geometries combined with the chipbreaker design of indexable insert. The Master-Mill A2790 series has been developed to machine mainstream materials such as steel and stainless steel. With its extremely soft cutting action, low-spindle power requirement, six useable edges on each indexable insert and the ability to machine at feedrates of up to 0.4 mm/tooth and 4 mm depth of cut, makes it ideal for the typical vertical machining centre found in subcontract machine shops. Similarly the Master-Mill A2740 also features a soft cutting action that results in a reduction in spindle power requirement of 25 per cent, and feedrates increased by up to 20 per cent, when compared to other similar cutters. However, the design brief for A2740 was to provide a solution for the machining of heat resistant alloys, specifically titanium. This it achieves thanks to the innovative cutter body design that produces a 25º top rake on the insert. "The growth in the machining of titanium components, not only in aerospace but across the board including medical and automotive, will impact on just about everyone in the metacutting industry," commented Tony Pennington, managing director WNT (UK)."The biggest impact of this will be the demand it places on machine availability, with machining time increasing by a factor of 10, when compared to machining aluminium, for example." Both the A2790 and A2740 make use of WNT's latest insert grades, including the latest Dragonskin grades, in particular HCN 1235 for general purpose machining of steel, HCN 2235 for stainless steel, and HCF 5240 for titanium and its alloys.