B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
B23B 31/30 (2006.01)
Patent
CA 2561922
The invention relates to a hydraulic expanding chuck (1), which has a particularly advantageous long, narrow design. The tool end (3) of the expanding chuck (1) is equipped with an expanding bushing (10) that is surrounded by a pressure chamber (12), which can be radially deformed in order to clamp a tool by means of a hydraulic fluid (F) that is contained in said pressure chamber (12). A pressure generation unit (14) is situated at an axial distance from the expanding bushing (10) and a pressure conduction system (13) is provided to transfer pressure from the pressure generation unit (14) to the pressure chamber (12), said pressure conduction system being formed by an annular gap (11) that is concentric with the chuck axis (2).
La présente invention concerne un mandrin de serrage hydraulique expansible (1) qui est particulièrement avantageux notamment sous une forme allongée et étroite. Le mandrin de serrage expansible (1) comprend à son extrémité côté outil (3), un manchon d'expansion (10) qui est entouré par une chambre de compression (12) et qui peut être déformé radialement sous l'effet d'une substance sous pression (F) contenue dans la chambre de compression (12), pour permettre le serrage d'un outil. A une distance axiale du manchon de serrage (10), se trouve une unité de production de pression (14), un système de transfert de pression (13) servant au transfert de la pression de l'unité de production de pression (14) à la chambre de compression (12),ledit système étant formé par un espace annulaire (11) concentrique avec un axe (2) du mandrin de serrage.
Kennametal Inc.
Smart & Biggar
LandOfFree
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