Device for connecting a tool head with a clamping shank

Details Device for connecting a tool head with a clamping shank Device for connecting a tool head with a clamping shank

B - Operations, Transporting

23

B

B23B 29/04 (2006.01)

Patent

CA 2318109

The invention relates to a device for connecting by means of a clamping mechanism a tool head (16) presenting a tool shank (14) with a clamping shank (12) having a seat for receiving the tool shank (14). A functional yet simple construction of the clamping mechanism is made possible by the fact that the face ends of the clamping elements (25) of the clamping mechanism (22) are overlapped by one piston-like centering element (68, 70) each. Said centering elements (68, 70) are connected to each other by axially parallel links (74) forming a centering cage (66) which overlaps the clamping mechanism with axial play. The centering elements (68, 70) each lock into an axially central, cylindrical recess (76, 78) situated in the floor area of the clamping shank and hollow shank (14).

L'invention concerne un dispositif pour raccorder une tête d'outil (16) présentant une tige d'outil (14), à une tête de serrage (12) comportant un logement pour la tige d'outil (14), au moyen d'un mécanisme de serrage. L'invention vise à permettre d'obtenir une structure à la fois fonctionnelle et simple du mécanisme de serrage. A cet effet, un élément de centrage en forme de piston (68, 70) recouvre chaque extrémité, côté face, des éléments de serrage (25) du mécanisme de serrage (22). Ces éléments de centrage (68, 70) sont raccordés l'un à l'autre par des éléments jointifs (74) axialement parallèles, qui forment une cage de centrage (66) recouvrant le mécanisme de serrage (22) avec un jeu axial. Les éléments de centrage (68, 70) s'emboîtent chacun dans un évidement cylindrique (76, 78) centré par rapport à l'axe, au niveau de la partie inférieure de la tige de serrage et de la tige creuse (14).

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