Rotary cutting tool

B - Operations – Transporting – 23 – B

Patent

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Details

B23B 31/11 (2006.01) B23B 31/00 (2006.01) B23C 5/10 (2006.01) B23D 77/00 (2006.01)

Patent

CA 2485651

A rotary cutting tool (10, 110) comprising a cutting head (16, 116), a screw member (18, 118) and a tool shank (20). The cutting head (16, 116) has an axially directed through bore (27, 127) with locking wings (30, 130) protruding from the bore surface (28, 128). Each locking wing having a sloping locking surface (34, 134) and stopper (36, 136) with a stop surface (40, 140). The screw member (18, 118) has outwardly radially protruding clamping wings (66, 166) each having a sloping clamping surface (70, 170), and an associated side abutment surface (71'', 175''). The screw member is in threaded engagement with the tool shank, with the clamping wings and locking wings aligned in pairs with the locking and clamping surfaces (34, 70; 134, 170) of each pair in abutment, and with each stop surface (40, 140) in abutment with a given side abutment surface (71'', 175'').

L'invention concerne un outil de coupe rotatif (10, 110) comprenant une tête de coupe (16, 116), un élément de vis (18, 118) et une queue (20). La tête de coupe (16, 116) présente un alésage traversant (27, 127) dirigé dans le sens axial qui comprend des ailes de verrouillage (30, 130) faisant saillie depuis la surface (28, 128) de l'alésage. Chaque aile de verrouillage présente une surface de verrouillage (34, 134) inclinée et un élément d'arrêt (36, 136) comprenant une surface d'arrêt (40, 140). Ledit élément de vis (18, 118) présente des ailes de serrage (66, 166) faisant saillie dans le sens radial vers l'extérieur, présentant chacune une surface de serrage (70, 170) inclinée, et une surface de butée latérale (71'', 175'') associée. Ledit élément de vis est en contact fileté avec la queue de l'outil, les ailes de serrage et les ailes de verrouillage alignées par paires avec les surfaces de verrouillage et de serrage (34, 70; 134, 170) de chaque paire de butée, et avec chaque surface d'arrêt (40, 140) venant buter contre une surface de butée latérale (71'', 175'') donnée.

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