Cartridge System Eliminates Face Milling after Parting Off

Horn has added a type-842 cartridge system featuring smaller dimensions for machining smaller workpieces to its 940 modular grooving system comprising a basic holder, a grooving toolholder and a cartridge. The system offers high rigidity and an efficient cooling concept for parting off free-cutting, high-strength and stainless steel bar. According to the company, the system’s key advantages lie in the flexible component combinations; the grooving toolholders—which are available in different lengths according to the type of machine and application—are connected to the basic holder.

The type-842 cartridges were developed for maximum rigidity, which can improve workpiece flatness and surface quality compared to blades. The company says that these cartridges eliminate the need for additional face turning on the parting-off surface. Horn offers the grooving tool with maximum radial depths of cut measuring 22 and 34 mm (0.8661" and 1.3386").Designed for use on lathes with smaller work areas, the cartridge can be screwed from both sides. The type S100 cutting inserts are available with various widths, geometries and coatings to suit different machining tasks. The screw clamping device of the cutting edge eases tool changes with a high level of repeat accuracy.

The grooving tool features an internal coolant supply with support cooling provided from below and clamping-finger cooling provided from above. As a result, the coolant jet acts directly on the cutting edge, thereby ensuring optimum work results. Compared with conventional external cooling concepts, this type of cooling improves the cutting parameters and leads to longer tool life, says the company.