Брошюра Dormer Pramet новинки 2021 - страница 12

S7 TROCHOIDAL 5-FLUTE CUTTERS SOLID MILLING CUTTERS S771HB / S773HB FEATURES & BENEFITS • Suitable for narrow pocketing, trochoidal slotting and stainless steel and super-alloys, reducing the risk of profiling applications. work-hardening. • A five-flute design for increased feed rates up to • AlCrN coating for thermal stability, reduced friction, 25%, compared with four-flute tools. excellent wear resistance and prolonged durability. • Through coolant to improve welding resistance • Neck recess feature to avoid contact with the wall in and enable a wide range of processes, especially for shoulder operations. difficult-to-machine materials. • Unequal helix for chatter free machining and • FS chip divider to break swarf into manageable excellent surface finishing. smaller pieces, helping to reduce spindle load and • Small corner radius and a specific cutting edge design increase metal removal rates. Also, this provides a to provide a stable performance, reduce chipping 50% bigger width of cut compared to tools without a and prolong tool life. chip divider. • Maximum productivity due to optimal metal removal • Positive rake angle for smooth cutting action in rate and reduced machining time. NEW ASSORTMENT – FIVE-FLUTE END MILLS S773HB S770HB S772HB S771HB Feature Cutting Length Short Short Long Long FS Chip Divider - Yes - Yes Through Coolant - Yes - Yes Neck Recess - Yes - Yes Unequal Helix 35° / 36° / 37° S771HB MACHINING EXAMPLE Workpiece material: Inconel 718 (WMG S3.1) Tool: S771HB10.0 Operation: Trochoidal slotting Coolant: Internal coolant (emulsion) Cutting speed Vc m/min 35 Feed Vf mm/min 160 Axial depth of cut ap mm 20 Radial depth of cut ae mm 0,5 Time in cut min 60 11