FLUID PRESSURE CHUCK DEVICE

PURPOSE: To provide a chuck device which is small-sized and has high reliability without a disc spring, a bearing and a rotary seal by operating a chuck cylinder by switching an oil pressure in and out passage to fasten a chuck piece and release fastening of the same. CONSTITUTION: Oil pressure is a...

Full description

Saved in:
Bibliographic Details
Main Authors MARI TAKESHI, ENDO TETSUYA
Format Patent
LanguageEnglish
Published 28.05.1996
Edition6
Subjects
BLASTING
DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
ENGINEERING ELEMENTS AND UNITS
FIXED CONSTRUCTIONS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
THERMAL INSULATION IN GENERAL
WEAPONS
Online AccessGet full text

Cover

More Information
Summary:PURPOSE: To provide a chuck device which is small-sized and has high reliability without a disc spring, a bearing and a rotary seal by operating a chuck cylinder by switching an oil pressure in and out passage to fasten a chuck piece and release fastening of the same. CONSTITUTION: Oil pressure is applied to a passage L6 of a second oil pressure in and out passage to advance a piston 7 upward, and a port plate 6 is pressed to a chuck cylinder 4 to connect the passage L1 of a first oil pressure in and out passage to L3 and connect L2 to L4 to conduct. Oil pressure is applied to the passage L1 through the passage L3 to operate the chuck cylinder 4, whereby a chuck body 3 is displaced in the axial direction of a spindle 1 so that a chuck piece 2 and the chuck body 3 collide with each other to generate the fastening force. After the completion of fastening, the second oil pressure in and out passages L5, L6 are switched to cut off the first oil pressure in and out passages L1, L2, and the fastening force is kept by a double chuck valve 9 and an accumulator 10. After the end of a drilling work, the second oil pressure in and out passages L5, L6 are switched to again put the first oil pressure in and out passages L1, L2 in the connecting state, and the chuck cylinder 4 is operated to move backward the chuck body 3 to release constraint on the chuck piece 2.
Bibliography:Application Number: JP19940298922