Sumitomo develops SEC Sumi Dual Mill DGC cutter body to accept 16-corner square inserts

The SEC Sumi Dual Mill DGC, available in coarse, medium and fine pitch types, will accommodate seven types of Sumitomo insert grades and five chipbreaker variants. This meets a wide range of face milling production needs in stainless steel, high temperature alloys, cast irons and non-ferrous materials. Sumitomo suggests that the combination of the high precision cutter body, with its latest Super ZX multi-layered PVD nano coating of TiAIN and AICrn, provides an effective balance of cutting edge stability, extended wear, chipping and built-up edge resistance for highly efficient milling with an improved surface finish. Five chipbreaker styles of insert are available: G, general use, L, lighter machining and H, for heavy cutting cycles, while FG and FL are available for maximum burr suppression under cut. The square, two-sided, eight corner inserts incorporate toughened edges to accommodate cutting depths of up to 6 mm. Due to the large rake angle, edge sharpness effectively reduces cutting forces required. When machine to depths up to 3 mm, forces generated should be as low as that normally expected from a positive edge, single-sided four-corner insert. For greater economy and when milling up to 3 mm depth of cut, the octagonal ONMT type 16-corner, two-sided inserts provide an alternative for general machining applications. The SEC-Sumi Dual Mill DGC cutter bodies are available between 40 and 250 mm diameter (shell type) and 40 to 63 mm in end mill style.