A chip cutting tool

B - Operations – Transporting – 26 – D

Patent

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Details

B26D 1/12 (2006.01) B23C 5/10 (2006.01) B23C 5/12 (2006.01) B23C 5/22 (2006.01) B23P 15/28 (2006.01)

Patent

CA 2156519

A chip cutting tool for rotary machining operations having a longitudinal axis (A) of rotation and comprising an indexable cutting insert (1) having cutting edges (10a), a tool holder (2) having an insert retaining pocket (47) and clamping means (3) for securing the insert in the pocket. Each of the cutting edges comprising leading and trailing cutting edge portions (17, 18). The trailing cutting edge portion is co-directional with the longitudinal axis, as compared with the leading cutting edge portion and located above a reference plane parallel to a plan view and passing through the longitudinal axis. A relief flank surface (13a) associated with the trailing cutting edge portion (18) is directed at an internal acute angle to the reference plane. The chip cutting tool can be used in end milling, drilling, and turning operations for machining plane or irregular shape surfaces.

L'inventon concerne un outil d'ébarbage pour opérations d'usinage circulaire comprenant un axe longitudinal (A) de rotation et une plaquette coupante indexable (1) présentant des bords coupants (10a), un porte-outil (2) doté d'une poche de retenue de plaquette (47), et des moyens de serrage (3) permettant d'immobiliser la plaquette dans la poche. Chaque bord tranchant comprend une partie coupante d'attaque et une partie coupante de fuite (17, 18). La partie coupante de fuite s'étend dans la même direction que l'axe longitudinal, relativement à la partie coupante d'attaque, et est située au-dessus d'un plan de référence parallèle à une vue de dessus et coupant l'axe longitudinal. Une face de flanc en relief (13a) associée à la partie coupante de fuite (18) forme un angle aigu avec le plan de référence. L'outil d'ébarbage peut être utilisé dans les opérations terminales de fraisage, de perçage et de tournage pour usiner des surfaces planes ou irrégulières.

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