B - Operations – Transporting – 23 – G
Patent
B - Operations, Transporting
23
G
B23G 5/20 (2006.01) B23G 5/18 (2006.01)
Patent
CA 2279523
A thread milling cutter with drill blade has a drill blade 6 at the leading end of a land 5 divided by grooves 3 and a tapered tapping blade 7 provided behind the drill blade, with the upper end thereof in the direction of rotation projecting outward beyond the drill blade 6. The drill blade 6 first pre-drills a hole and then the tapered strong tapping blade 7 cuts internal threads on the inner wall of the pre-drilled hole.
La présente invention concerne une dent de fraise (6) disposée sur l'extrémité frontale d'un épaulement (5) formé par une rainure (5). Derrière la dent de fraise se trouve un bord tranchant conique de filetage (7) dont la face en amont dans le sens de rotation déborde sur la dent de fraise (6). La dent de fraise (6) perce un trou d'ébauche, le bord tranchant conique de filetage rigide (7) forme un filetage femelle dans la surface périphérique interne du trou d'ébauche.
Honda Giken Kogyo Kabushiki Kaisha
Riches Mckenzie & Herbert Llp
LandOfFree
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