Harmonic dampener for rotary tool holder

B - Operations – Transporting – 23 – C

Patent

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Details

B23C 9/00 (2006.01) B23B 31/02 (2006.01) B23Q 11/00 (2006.01)

Patent

CA 2295602

A tool holder (10) for use in a rotating spindle (12) of a milling machine. The tool holder (10) comprises a conically tapered shank portion (14) for insertion into the spindle (12) and a cutting tool mounting portion (18). Disposed between the shank (14) and mounting portions (18) is a flange portion (34). Additionally, extending about the shank portion (14) is a dampening member (38). The dampening member (38) is compressible between the flange portion (34) and the spindle (12) when the tool holder (10) is inserted into the spindle (12), and is adapted to eliminate harmonic resonance attributable to the use of the tool holder (10) with an extended shank cutting tool (30).

La présente invention concerne un porte-outils (10) destiné à être utilisé dans le tourillon (12) en rotation d'une machine à fraiser. Le porte-outils (10) comprend une partie tige conique effilée (14) destinée à être insérée dans le tourillon (12) et une partie (18) destinée au montage d'un outil de coupe. Entre la partie tige (14) et la partie de montage (18) se trouve une partie bride (34). En outre, un élément amortisseur (38) s'étend autour de la partie tige (14). Cet élément amortisseur (38) peut être comprimé entre la partie bride (34) et le tourillon (12) lorsque le porte-outils (10) est inséré dans le tourillon (12), et il est apte à éliminer la résonance harmonique causée par l'utilisation du porte-outils (10) équipé d'un outil de coupe (30) à tige allongée.

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