High-Feed Milling Cutter Contains Six Cutting Edge Inserts for Productive Ramp Down Operations

Tungaloy America unveils its DoFeedTri high-feed milling cutters, which use double-sided inserts with six total cutting edges—three cutting edges on each side—enabling what Tungaloy says is further machine cost reduction, more economic milling and 1.5 times better cost per edge than conventional inserts with four cutting edges.

DoFeedTri inserts come in a trigonal shape with a greater contact face that achieves secure insert retention when screw-clamped on the cutter, eliminating insert movement during machining.

The insert is also suited for productivity boosts during ramp down operations. When ramping down, the cutter first bottom-cuts the surface with the leading insert, then further cuts the same surface with its trailing insert. DoFeedTri inserts are designed with a long “inner” cutting edge that can bottom-cut more material than conventional milling inserts when trailing the leading insert during ramp down operations. 

Furthermore, a reduced entry angle of the cutter eliminates chatter, improving stability during machining with long overhang tool setup. Strong cutting edges provide the insert with long tool life and security at increased machining rates.

Two insert grades are available: AH3225, which is said to promise exceptionally long tool life and AH8015, which demonstrates high performance in hardened steel and heat-resistant superalloys. Cutters are offered from 16-50-mm in diameter in metric sizes and from 5/8″ to 2″ in imperial sizes. With a maximum d.o.c. of 1.0 mm (0.039″), the DoFeedTri contributes to customers seeking further machining cost reductions. A total of 26 new cutters and inserts have been introduced.