EP 3525969 A1 20190821 - HYDRAULIC EXPANSION CHUCK DEVICE
Title (en)
HYDRAULIC EXPANSION CHUCK DEVICE
Title (de)
HYDRAULISCHE DEHNSPANNEINRICHTUNG
Title (fr)
DISPOSITIF DE SERRAGE EXTENSIBLE HYDRAULIQUE
Publication
Application
Priority
- DE 102016119752 A 20161017
- EP 2017076515 W 20171017
Abstract (en)
[origin: WO2018073265A1] The invention relates to an hydraulic expansion chuck device in the form of an expansion chuck, especially for securing a component or tool to a machine tool or a workbench. The device has a main part (2) which defines a clamping axis (X) and at the front end region of which a central recess (5) is provided, which is open towards the front end face (4) of the main part (2) and into which a component (B) to be clamped can be axially inserted. The recess (5) is surrounded by multiple pressure chambers (6) to which hydraulic pressure can be applied and which are evenly distributed across the circumference of the clamping portion and in particular are concentric to the clamping axis. In the regions between the clamping surface and the pressure chambers (6), the side (7) of the recess (5) in the main part (2) is elastic in such a way that when the hydraulic pressure in the pressure chambers (6) rises said side is elastically deformable towards the inside in order to frictionally secure a component inserted into the recess (5).
IPC 8 full level
B23B 31/30 (2006.01); B23B 31/20 (2006.01); B23P 11/02 (2006.01); F16B 4/00 (2006.01); F16D 1/08 (2006.01)
CPC (source: EP)
B23B 31/204 (2013.01); B23B 31/305 (2013.01); B23P 11/02 (2013.01); F16D 1/0805 (2013.01); B23B 2231/04 (2013.01); B23B 2260/026 (2013.01); F16B 2200/89 (2023.08)
Citation (search report)
See references of WO 2018073265A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102016119752 A1 20180419; EP 3525969 A1 20190821; WO 2018073265 A1 20180426
DOCDB simple family (application)
DE 102016119752 A 20161017; EP 17793598 A 20171017; EP 2017076515 W 20171017