Small indexable 90° cutters
- October 23, 2019
Iscar is expanding its milling line by introducing a new family of very small indexable 90° cutters in a diameter range of 8-10 mm (0.31-0.39 in.), carrying triangular inserts.
The new NAN3MILL family has been designed for applications that usually utilize solid carbide endmills. Iscar says that compared with solid carbide endmills, the new family provides a significant cost-benefit option due to the advantages of indexable tools.
The NAN3MILL indexable endmill carries more than one insert and is well suited for manufacturers of small-size and miniature parts and compact components, in a variety of industries. The new HM390 ETP endmills carry HM390 TPKR 0401-PCTR inserts.
With a 90º cutting edge angle, the cutter’s design reduces cutting forces, enables smooth cutting and improves ramping down ability. The cutter body has a special protective single-layer hard touch coating for uninterrupted chip flow and protection from corrosion and wear. The cutter has a 3 mm (0.19 in.) maximum depth of cut.
Single-sided triangular inserts feature positive radial and axial cutting geometry on the tool with a flat wiper for high surface finish. The inserts are produced from Iscar’s latest SUMO TEC carbide grades.
The key element of the cutter design is a method of clamping inserts with no falling parts. The new tools feature a unique rigid screw head wedge clamping method that does not require screw removal for insert indexing, which is very important for such small elements. As the insert is very small, a special key is used to place it in the pocket.
The NAN3MILL family provides a viable alternative to the commonly used 8-10 mm (0.31-0.39 in.) diameter solid carbide endmills used for milling small-size surfaces. Most competitive indexable solutions in this diameter range feature fewer teeth, which impacts productivity and operational stability.
Iscar says the 8 mm (0.31 in.) diameter NAN3MILL HM390 ETP milling cutter may be the smallest indexable tool with multiple inserts currently on the market.