Sumitomo extends application range of its GND grooving tools

External turning and copying using Sumitomo's SEC-GNDM straight and GNDMS-L-style holders will accommodate inserts having groove widths between 3 and 8 mm and to meet groove depths of up to 18 mm, while the GDL straight and GNDLS-L-style holders for grooving and part-off will take insert widths between 2 and 8 mm and are able to accommodate groove depths up to 25 mm. Meanwhile, for internal feature machining the GNDI holders will accommodate groove widths between 2 and 6 mm having depths up to 11 mm and, on component face type applications, the GNDF holder provides grooving, turning and profiling using insert widths from 3 to 6 mm to groove depths up to 23 mm. There are six types of chipbreaker inserts now available for the SEC-GND/GNDM/GNDL and GNDLS external tool range. For general purpose turning, the MG type is used. However, to optimise chip management at very low feedrates which can prove difficult for swarf control, the ML type is suggested. A general purpose insert GG is available for grooving and part-off but again, to cater for low feedrate conditions, GL is available while CG is ideal for part-off operations, says Sumitomo Hardmetal. The company suggests that RG type inserts are the best choice for general purpose copying and profiling. For internal turning grooving and copying applications, the SEC-GNDI/GNDF tooling range offers the MG insert for general turning and ML for low feed work, with the GG for grooving, GL for low feed cutting and RG for copying.