WNT aims A2520 series milling cutters at difficult to machine materials

The WNT A2520 series cutter bodies are designed to handle a wide range of milling operations, including slotting, turn-milling, face milling and reverse copy milling and are available with cylindrical, screw thread or shell mill style shanks – all with through tool coolant as standard. Cutter diameters range from 32 to 80 mm depending on the style of body selected, with each body accepting the new round (RHNU) inserts. The double-sided inserts feature a series of four precision indentations around their periphery to enable accurate indexing when the edge becomes worn and provide a total of eight cutting edges per insert. Insert geometries have undergone extensive development to optimise performance and to simplify the machining process on challenging materials. For titanium, stainless steel and super alloys there is the M31 geometry. This features a deep chipbreaker that creates ideal chip formation at elevated feed rates. It also has a highly positive geometry for a smooth cutting action and quiet machining. M31 geometry inserts are available in two grades, HCN5235 and HCF5240. Available only in grade HN5235, M32 offers the geometry of choice for machining martensitic heat resistant Cr-Ni steels. M32 inserts have wider chip pockets to assist swarf removal in high feed applications. The combination of robust cutter bodies and insert geometries designed for these materials enable the 2520 series of button insert cutters to deliver volume metal removal thanks to high performance cutting data of up to 0.6 mm per tooth feedrates, and a maximum of 3 mm depth of cut (theoretical 5.5 mm). This makes them suitable for a wide range of applications in the aerospace, automotive and general engineering sectors, concludes WNT.