Rotary cutting tool comprising an exchangeable cutting insert

Details Rotary cutting tool comprising an exchangeable cutting insert Rotary cutting tool comprising an exchangeable cutting insert

B - Operations, Transporting

23

B

B23B 51/02 (2006.01) B23C 5/10 (2006.01) B23D 77/02 (2006.01)

Patent

CA 2484602

The invention relates to a rotary cutting tool (3) that is composed of a tool shank (2) with at least one chucking groove (5) and one exchangeable cutting insert (1). At the tip (4) of the shank as well as in the wall of the chucking groove (5) a recess (6) for accommodating the cutting insert (1) is provided and is delimited on the shank-end by a rim (7) against which the shank-end narrow side (12) of the cutting insert (1) rests. The cutting insert (1) comprises a fastening pin (15) which is accommodated in a location opening (16) of the tool shank (2) that is concentric to the tool axis (A). The tool shank (2), on its circumference, has a limb (9) with a bearing surface (8) that is inclined relative to the tool axis (A) and that corresponds to a likewise inclined bearing surface (10) on a wing (11) of the cutting insert (1). The orientation of inclination of the bearing surfaces (8, 10) corresponds to the direction of rotation (D) of the tool. The inclination of the bearing surfaces (8, 10) produces an axial force that retains the cutting insert (1) on the tool shank (2).

L'invention concerne un outil de coupe rotatif (3) comprenant une tige (2) ayant au moins une rainure ~ copeaux (5) et une pi­ce de coupe rapport~e interchangeable (1). A l'extr~mit~ (4) de la tige, ainsi que dans la paroi de la rainure ~ copeaux (5) est pr~vue une cavit~ (6) destin~e ~ recevoir la pi­ce rapport~e (1), d~limit~e, cÙt~ tige, par un bord (7) ~ l'encontre duquel vient s'appliquer le cÙt~ ~troit, cÙt~ tige (12) de la pi­ce rapport~e (1). La pi­ce rapport~e (1) pr~sente un tenon de fixation (15) qui vient se loger dans une ouverture de positionnement (16) de la tige (2) de l'outil concentrique ~ l'axe (A) de l'outil. La tige de l'outil (2) pr~sente, ~ sa p~riph~rie, une branche (9) ayant une surface d'appui (8) qui est inclin~e par rapport ~ l'axe de l'outil (A) et qui correspond ~ une surface d'appui (10) inclin~e de la mÚme fa×on, sur une aile (11) de la pi­ce rapport~e (1). L'orientation de l'inclinaison des surfaces d'appui (8, 10) correspond au sens de rotation (D) de l'outil. L'inclinaison des surfaces d'appui (8, 10) engendre une force axiale qui retient la pi­ce de coupe rapport~e (1) sur la tige de l'outil (2).

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