Key to the capability of Sumitomo Electric Hardmetal’s launch of its Sumi Dual Mill TSX-Series of higher efficiency, 90 deg precision shoulder milling cutter range is its latest developments in combining fine carbide insert press/sintering technology with high accuracy profile grinding techniques.  This enables the periphery ground inserts used with the new tangential cutter body design, which is available in standard, medium and fine pitch versions, to generate very accurate and excellent levels of surface finish.
The TSX-Series is based on the use of high precision tangentially mounted carbide inserts which have excellent levels of edge sharpness and sidewall accuracy.  There is also a choice of optimised chipbreakers, L for low rigidity machine setups, G for general purpose and H where a stronger insert edge is able to support, for instance, roughing, heavy interrupted and hard steel milling.
The TSX-Series comprises shell-type bodies between 40 mm and 160 mm diameter and shank-type bodies between 16 and 160 mm diameter to support operations such as face and shoulder milling, slot milling and side and face milling tasks.  Two sizes of insert, each with four corners are precision ground to accommodate depths-of-cut of 8 mm or 12 mm.
There is also a wide range of grades available enabling optimised performance with Sumitomo’s P-Class ACP100 used for carbon and alloy steels having a tough carbide substrate with a thin layer Super FF coating giving crack and wear resistance when high speed milling. ACP200 is for general machining including die steels with multi-layered Super ZX coating ensuring excellent fracture and wear resistance and ACP300 with the same coating but a tougher substrate making it ideal for interrupted cutting.
For stainless and exotic materials Sumitomo’s M-Class grade ACM200 has ultra-hard FF coating for hard machining applications and ACM300 with Super ZX coating ensures a good balance between wear and fracture resistance.
Meanwhile, for cast and ductile irons, Sumitomo’s K-Class ACK200 with Super FF coating on a tough carbide substrate has superior thermal and wear resistance and ACK300 with Super ZX coating will accommodate interrupted cutting applications.
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