Tungaloy UK’s DoFeed milling solutions have proven extremely successful for almost a decade and to build upon that reputation, the company has now launched the new AddDoFeed Series. Developed for high-feed milling on small parts, the new line takes cost efficiencies and productivity benefits to a new level for manufacturers in the mould and die, automotive, oil and gas and general engineering sectors.

Solid carbide end mills have long been applied to milling small parts. However, it is unproductive to use these small-diameter solid-carbide end mills when requiring considerable stock removal on slotting or pocketing applications. This is because the low bending stiffness prevents the tool body from sustaining the heavy radial force generated when feed is increased to improve cycle times.

The new AddDoFeed uses small size 02 inserts with a 4mm inscribed circle and offers close-pitch cutter bodies that boast unrivalled insert-to-diameter density for a small diameter indexable cutter. The series is offered in diameters of 8, 10, 12, 16, 20 and 25mm. This allows the 16mm diameter tool body to carry four inserts with five inserts on the 20mm diameter tool and seven inserts on the 25mm diameter tool body — empowering users to ramp up feed rates and increase productivity.

The tool bodies are available with a rigid short shank tool body, a long neck shank for reaching difficult to reach surfaces and also as a modular head system that is coupled with a tapered carbide shank for increased rigidity.

Smooth chip evacuation
These tiny AddDoFeed02 inserts carry all the key features that the DoFeed inserts have been delivering, including economical double-sided inserts with four effective cutting edges and optimal inclination on the cutting edge that enables smooth chip evacuation. They also have a large positive rake angle that is suitable for light cutting and process security.

When machining narrow grooves and small cavities, chip jamming and re-cutting are particular challenges. The inclination on the cutting edge of the AddDoFeed insert creates optimised chip formation that eliminates chip re-cutting and prolongs insert tool life.

The AddDoFeed is available with three insert grades that cater for ISO materials P, M, K, S and H. The AH3225 incorporates nan multi-layered coating technology with increased resistance to wear, fracture, oxidation and built-up edges when machining steel, stainless and cast iron.

The AH130 grade is a tough grade with high chipping and welding resistance that is suited to cutting stainless steel and titanium alloys. More of a universal grade, the AH8015 has a hard coating on a carbide substrate with a strong resistance to wear, heat and built-up edges.

The new AddDoFeed products dovetail Tungaloy’s existing high-feed milling concepts. The 21 new variants of small-size and close-pitch cutters are now available in addition to the current DoFeed series of medium diameter cutter tools that are represented by size 03 inserts and the larger diameter range size 06 inserts.