MMC Hardmetal expands VOX range of cutters for cast iron

The MMC Hardmetal VOX400 face mill edge-style insert cutter, also for cast iron, has been designed primarily with overall stability in mind. It is suitable for a wide range of cast iron milling applications. The design of the side-on or vertical insert allows the cutting forces to be absorbed through the whole length of the insert, instead of through the far thinner, face to face, dimension. The benefit of this is a greatly increased maximum depth of cut without the instability caused by vibration and lack of rigidity that compromises both component quality and tool life using standard methods. MMC Hardmetal cites a case of machining a cast iron (GG40) press mould base, where the usual 5 mm depth of cut was able to be doubled to 10 mm at a cutting speed of 230 m/min with a table feedrate of 2,050 mm. The SONX type inserts also boast eight cutting edges rather than the four usually found on vertical type inserts. The convex geometry of the actual cutting edge and the shaped face relief, also give an efficient cutting action that can reduce cycle times. Single screw clamping makes the insert easy to use. Black super smooth coating technology combined with the CVD coated carbide grade MC5020 helps to prevent the welding problems associated with machining cast iron. VOX series cutters are available in fine, extra fine or coarse pitch types from 63 to 250 mm diameter.