High precision tangentially-mounted carbide inserts that have excellent levels of edge sharpness and sidewall accuracy are a key attribute. 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 able to support, for instance, roughing, heavy interrupted and hard steel milling.
The TSX-Series comprises shell-type bodies between 40 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 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.
In a recent customer machining trial involving 42CrMo4 material, a TSX shell cutter body combined with ACP200 grade inserts and G-Type chipbreaker saw the process run at 270 m/min with 0.05 mm/rev feed and 8 mm depth-of-cut; coolant was used. Not only did the Sumitomo set-up improve wall quality, it also increased the number of parts produced from 135 to 220.
