High-speed milling cutter and insert

Details High-speed milling cutter and insert High-speed milling cutter and insert

B - Operations, Transporting

26

D

B26D 1/12 (2006.01)

Patent

CA 2551810

A high-speed milling cutter (10) includes a shank (12), a front portion (14), and a transition surface (16) between the shank (12) and the front portion (14). The cutter (10) also includes an insert pocket (20) having a bottom surface (22) and side surfaces (24, 26). The bottom surface (22) includes a raised boss (28) for supporting a cutting insert (30). The cutting insert (30) has a top surface (32), a bottom surface (34) and side surfaces (36, 38, 40, 42). The cutting insert (30) includes a primary cutting edge (44, 46) formed at an intersection between the top surface (32) and two of the side surfaces (36, 38, 40, 42). The top surface (32) of the cutting insert (30) includes a concave or dish-shaped topography that is designed for high-speed milling operations of a metallic work piece. The cutting insert (30) also includes a bore (76) in the bottom surface (34) capable of receiving the raised boss (28) for securely retaining the cutting insert (30) within the insert pocket (20), and reducing bending moment on retaining screw 64 during high-speed milling operations.

La présente invention concerne une fraise haute vitesse (10) comprenant un mandrin (12), une partie avant (14) et une de surface de transition (16) située entre le mandrin (12) et la partie avant (14). Cette fraise (10) comprend aussi une poche de mise rapportée (20) possédant une surface de fond (22) et des surfaces latérales (24,26). La surface de fond (1 2) comprend des bossages élevés (28) destinés à supporter une mise rapportée (30). La mise rapportée (30) possède une surface supérieure (32), une surface de fond (34) et des surfaces latérales (36,38,40,42). La mise rapportée (30) comprend un bord coupant principal (44,46) formé au niveau d'une intersection entre la surface supérieure (32) et deux des surfaces latérales (36,38,40,42). La surface supérieure (32) de la mise rapportée (30) comprend une topographie concave ou en forme de cuvette conçue pour des opérations de fraisage haute vitesse d'une pièce métallique. Cette mise rapportée (300) comprend aussi un alésage (76) dans la surface de fond (34) capable de recevoir les bossages élevés (28) de façon à retenir solidement la mise rapportée (30) à l'intérieur de la poche de mise rapporter (20) et, à réduire le moment de courbure sur la fils de retenue (64) pendant les opérations de fraisage haute vitesse.

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