B - Operations – Transporting – 23 – C
Patent
B - Operations, Transporting
23
C
B23C 5/10 (2006.01) B23C 5/22 (2006.01)
Patent
CA 2468820
The invention relates to a milling tool with an cutting edge geometry comprising a main cutting edge (3), a cutting comer (4), optionally configured with a bordering planar cutting edge segment (5) and a secondary cutting edge (6) for use in milling to achieve the smoothest level surface possible parallel to the rotational axis of the milling tool(1). In the preferred embodiment of the invention, every main cutting edge (3) is designed in such a way that the generatrix (8) of the envelope curve (9) described by the rotation of the milling tool (1) has a first segment (11) of at least 1 mm equivalent to a projection length (17) based on the rotational axis (7) which borders on the cutting comer (4). This segment (11) is shaped in such a way that its distance from the rotational axis (7) increases from its smallest value at the beginning of the segment (11) to its largest value at the end of the segment (11). The tangents at each point of this segment (11) encompass an angle with a value in the range of 0° - 5° to a parallel to the rotational axis (7). The first segment (11) then borders on a second segment (12) which has a projection length of at least 1.5 mm. The second segment (12) is shaped in such a way that its distance from the rotational axis (7) is largest at the beginning of this segment (12) and increases progressively to its smallest value at the end of this segment (12). The tangents at each point of this segment (12) encompass an angle .alpha.2 of more than 0° and up to 3° with a parallel to the rotational axis (7). The projection length (18) of the second segment (12) is at least 1.5 times as large as the projection length (17) of the first segment (11).
La présente invention concerne un outil de fraisage qui présente une géométrie de coupe formée par une arête de coupe principale (3), une pointe de coupe (4) présentant au choix une section d'arête de planage (5) adjacente et des arêtes de coupe secondaires (6). Cet outil de fraisage est conçu pour réaliser le fraisage de surfaces planes, les plus lisses possibles, parallèlement à l'axe de rotation de l'outil de fraisage (1). Selon cette invention, chaque arête de coupe principale (3) est conçue de façon que la génératrice (8) de la surface enveloppante apparaissant lors de la rotation de l'outil de fraisage (1) présente une première section (11) d'au moins 1 mm d'une longueur de projection (17) relative à l'axe de rotation, qui est adjacente à la zone (10) correspondant à la pointe de coupe (4).
Duwe Juergen
Koch Wolfgang
Le Borgne Didier
Schleinkofer Uwe
Airbus France Societe Par Actions Simplifiee
Ceratizit Austria Gesellschaft M.b.h.
Fetherstonhaugh & Co.
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