Drill tool assembly

B - Operations – Transporting – 23 – B

Patent

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Details

B23B 51/00 (2006.01)

Patent

CA 2341299

The invention is directed at a drill tool assembly (10) including a holder (12) having a shank (14) and a head portion (16) and having an axial centerline or rotational axis (18) on which said holder (12) is rotated in use. The head portion (16) includes a holder slot (30) at least over a central portion of the head, with the slot (30) being oriented perpendicularly to the axial centerline of the holder (12). The holder slot (30) also includes a locating boss (24). A drill insert (35) having first and second cutting surfaces is selectively positioned within the holder slot (30). Both the position of the boss (24) and corresponding position of the drill insert (35) and locating slot (30) with respect to the holder (12) to mimimize offset errors in these relative positions.

La présente invention concerne un ensemble trépan (10) comportant un porte-outil (12) avec un corps (14) et une partie tête (16) avec un axe central ou de rotation (18) autour duquel s'effectue la rotation du porte-outil (12) pendant la marche. La partie tête (16) présente une gorge (30) qui s'étend sur au moins une partie centrale de la tête et qui est orientée perpendiculairement par rapport à l'axe (18). La gorge (30) comporte également un bossage de positionnement (24). Une plaquette présentant une première et une seconde surface de coupe est disposée sélectivement dans la gorge (30). La position du bossage (24) et la position correspondante de la plaquette (35) et de la gorge (30) sont étudiées de manière à réduire au minimum les erreurs dues à un décalage par rapport à ces positions.

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