B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
B23B 31/107 (2006.01)
Patent
CA 2271045
A chuck for rotary tools with a cylindrical chucking shank (2) encloses such shank with a basic body (4). A radical through-hole (7) in basic body (4) serves to receive a clamping screw (10) which applies pressure to a clamping member (9) which is seated inside through-hole (7) between clamping screw (10) and chucking shank (2). Clamping member (9) is provided with a radial projection (16) and through-hole (7) with a cross-sectional narrowing (17) along its inner end. In between is an elastically compressible spring element (18) which, due to its return force, lifts clamping element (9) away from chucking shank (2) and pushes it back into through-hole (7) when it is not under tension from the clamping screw.
L'invention concerne un mandrin destiné au serrage d'outils rotatifs pourvus d'une tige à serrer (2) cylindrique. Le mandrin entoure cette tige avec un corps de base (4). Un trou traversant (7) radial ménagé dans le corps de base (4) sert au logement d'une vis de serrage (10) qui agit sur une pièce de pression (9) placé entre elle et la tige à serrer (2), dans le trou traversant (7). La pièce de pression (9) présente une saillie radiale (16) et le trou transversal (7) présente, au niveau de son extrémité intérieure, un rétrécissement de section (17). Entre la saillie radiale (16) et les parois au niveau du rétrécissement de section agit un élément (18) élastiquement compressible qui, grâce à sa force de rappel sépare la pièce de pression (9) de la tige (2), lorsqu'elle n'est pas sollicitée par la vis de serrage, et la repousse dans le trou traversant (7).
Muller Gebhard
Prey Martin
Schuffenhauer Michael
Kennametal Inc.
Marks & Clerk
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