Title:
HYDRAULIC EXPANDING CHUCK
Document Type and Number:
WIPO Patent Application WO/2012/013629
Kind Code:
A1
Abstract:
The invention relates to a hydraulic expanding chuck (1) having a main body (2) and an expanding bush (3), which is inserted into the main body (2) to form at least one pressure chamber (5a, 5b) and is intended for chucking a tool. The expanding bush (3) has a radial opening (20), which is arranged in alignment with a driver (21) which is held adjustably in the main body (2) and can be moved via the opening (20) into positive engagement with a driving surface (22) on the tool shank of a tool to be received in the expanding bush (3). According to the invention, the driver (21) has a driver screw (23), which can be driven from radially outside the hydraulic expanding chuck (1) and is screwed into a threaded bore (24) formed in the main body (2) in alignment with the radial opening (20).
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Inventors:
PFISTER, Rainer (Josef-Mayer-Straße 58, Burladingen, 72393, DE)
Application Number:
EP2011/062731
Publication Date:
February 02, 2012
Filing Date:
July 25, 2011
Export Citation:
Assignee:
PFISTER, Rainer (Josef-Mayer-Straße 58, Burladingen, 72393, DE)
International Classes:
B23B31/30; B23B31/00; B23B31/107; B23B31/117
Attorney, Agent or Firm:
MASER, Jochen (Patentanwälte Mammel und Maser, Tilsiter Straße 3, Sindelfingen, 71065, DE)
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Claims: