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Patent Searching and Data


Title:
ONE-WEDGE CENTERING HYDRAULIC CHUCK
Document Type and Number:
WIPO Patent Application WO/2017/131304
Kind Code:
A1
Abstract:
The present invention relates to a one-wedge centering hydraulic chuck, and the objective of the present invention is to minimize the force for clamping and lifting workpieces by jaws while minimizing the stroke of a wedge bar when four jaws are linked by the operation of one wedge plunger so as to accurately center a circular rod, a circular pipe and the different shapes of workpieces having cross sections, which have the shapes of a square, a rectangle, an oval and the like. To this end, the present invention comprises: a chuck housing (10) having a workpiece insertion hole (11) bored through the center of the front surface of a body, an operating space (18) formed at the rear thereof, and four jaw guide grooves (12) formed to intersect with each other; four master jaws (20) slidably assembled in each jaw guide groove (12) of the chuck housing (10); a wedge plunger (30) horizontally moving in the operating space (18) formed at the rear of the chuck housing (10), and having four lever mounting holes (31) and wedge insertion holes (32) provided along the outer periphery thereof; a wedge lever (40) provided in each lever mounting hole (31) of the wedge plunger (30) such that pressing parts (42) at both ends thereof rotate around a lever fixing bolt (50) in the lever mounting hole; the wedge bar (60) slidably mounted in each wedge insertion hole (32) of the wedge plunger (30), and having a lever fitting groove (62) formed at the rear thereof; and a master jaw pressing means for simultaneously moving the master jaws (20) toward the workpiece insertion hole (11) by the backward movement of the wedge plunger (30).

Inventors:
SEO HONG SUK (KR)
Application Number:
PCT/KR2016/008338
Publication Date:
August 03, 2017
Filing Date:
July 29, 2016
Export Citation:
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Assignee:
SAMCHULLY MACHINERY CO LTD (KR)
International Classes:
B23B31/02; B23B31/10; B23B31/103; B23B31/30; B23Q3/06
Foreign References:
KR20100012261A2010-02-08
JP2001191202A2001-07-17
US4725065A1988-02-16
JP2008044092A2008-02-28
KR20110050140A2011-05-13
Attorney, Agent or Firm:
KIM, Byung Jin et al. (KR)
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