GB1424225A - Rotary hydraulic jack devices - Google Patents

Rotary hydraulic jack devices

Info

Publication number
GB1424225A
GB1424225A GB1707573A GB1707573A GB1424225A GB 1424225 A GB1424225 A GB 1424225A GB 1707573 A GB1707573 A GB 1707573A GB 1707573 A GB1707573 A GB 1707573A GB 1424225 A GB1424225 A GB 1424225A
Authority
GB
United Kingdom
Prior art keywords
piston
chamber
pressure
liquid
valves
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1707573A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LA PRECISION INDUSTRIELLE
Original Assignee
LA PRECISION INDUSTRIELLE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LA PRECISION INDUSTRIELLE filed Critical LA PRECISION INDUSTRIELLE
Publication of GB1424225A publication Critical patent/GB1424225A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
    • B23B31/30—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
    • B23B31/302—Hydraulic equipment, e.g. pistons, valves, rotary joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2231/00—Details of chucks, toolholder shanks or tool shanks
    • B23B2231/24—Cooling or lubrication means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2260/00—Details of constructional elements
    • B23B2260/004—Adjustable elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/12—Chucks or sockets with fluid-pressure actuator
    • Y10T279/1208—Chucks or sockets with fluid-pressure actuator with measuring, indicating or control means

Abstract

1424225 Chuck operating mechanisms LA PRECISION INDUSTRIELLE 10 April 1973 [11 April 1972] 17075/73 Heading B3T [Also in Division F1] A rotary hydraulic jack, particularly for exerting a pull on the control member of a chuck, comprises a piston 3 reciprocable in a cylinder 2 rotatable in bearings 9, 10, a pair of valves 25A, 25B for trapping liquid in the working chambers A, B on opposite sides of the piston 3 so as to lock the latter, and a cylindrical accumulator cavity 21 in communication with each chamber A and B and variable in volume by a spring-loaded piston 32A or 32b. Thus with both chambers A, B isolated by the valves 25A, 25B a limited amount of leakage from the chambers can be tolerated since the relevant piston 32A or 32b is urged by its spring 33 to maintain the chamber pressure. Liquid for operating the piston 3 is supplied to one or other of two annular grooves a, b in a fixed sleeve 11, the other groove being connected to exhaust. Assuming groove a is pressurized, then valve 25A opens to admit liquid to chamber A. Simultaneously a piston 23 is displaced to the left to open a valve 26B and allow liquid to exhaust from the chamber B via a tube 6 and passages 38, 37, 36 to the groove b. Pressurization of the chamber A displaces the piston 32A before reduction of pressure in the groove a causes the valves 26A, 26B to close. In a second embodiment having locking valves (41A, 41B) which are disposed in separate bores, Figs. 2-9 (not shown), each accumulator piston (45A, 45B) has two portions of differing diameter, and when liquid is applied to either chamber A or B it is also applied to the small and annular end surfaces of its accumulator piston. Thus the spring (46A or 46B) loading each accumulator piston is subjected to pressure over an area equivalent to its large end, whereby when the pressure supply to the annular surface is removed the spring causes the small surface to maintain a pressure in the associated chamber A or B which is greater than the supply pressure.
GB1707573A 1972-04-11 1973-04-10 Rotary hydraulic jack devices Expired GB1424225A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7212621A FR2180425B1 (en) 1972-04-11 1972-04-11

Publications (1)

Publication Number Publication Date
GB1424225A true GB1424225A (en) 1976-02-11

Family

ID=9096650

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1707573A Expired GB1424225A (en) 1972-04-11 1973-04-10 Rotary hydraulic jack devices

Country Status (6)

Country Link
US (1) US3892165A (en)
JP (1) JPS4916074A (en)
DE (1) DE2318240A1 (en)
FR (1) FR2180425B1 (en)
GB (1) GB1424225A (en)
IT (1) IT981790B (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2227450B1 (en) * 1973-04-24 1976-04-23 Precision Industrielle
FR2274853A1 (en) * 1974-06-14 1976-01-09 Messier Hispano Sa AUTONOMOUS DEVICE TO REMOTE OPENING AND CLOSING OF ROTARY MOVEMENT VALVES
US3972537A (en) * 1975-01-09 1976-08-03 The Warner & Swasey Company Chuck actuator assembly
FR2396883A1 (en) * 1977-07-04 1979-02-02 Precision Industrielle ANNULAR HYDRAULIC CYLINDER DEVICE, ESPECIALLY FOR THE CONTROL OF A PART CLAMPING CHUCK ON A MACHINE-TOOL
CA1070216A (en) * 1979-02-22 1980-01-22 John C. Carlson Pump jack assembly for wells
US4349207A (en) * 1980-11-14 1982-09-14 Metrology Systems Corp. Fluid actuated chuck
JPS6099507A (en) * 1983-11-04 1985-06-03 Kitagawa Tekkosho:Kk Rotary fluid pressure cylinder unit for chucking in machine tool
US4630441A (en) * 1984-09-04 1986-12-23 The Boeing Company Electrohydraulic actuator for aircraft control surfaces
US4747337A (en) * 1985-02-18 1988-05-31 Kitagawa Iron Works Co., Ltd. Rotary fluid cylinders for operating chucks
DE3674712D1 (en) * 1985-10-23 1990-11-08 Aced Sa ROTATING HYDRAULIC CYLINDER.
US4753071A (en) * 1985-12-23 1988-06-28 Sundstrand Corporation Self-powered rotating-cylinder type linear actuator utilizing rotation-generated centrifugal head for piston positioning
DE3786513D1 (en) * 1986-10-01 1993-08-19 Mazda Motor FOUR-WHEEL STEERING SYSTEM FOR MOTOR VEHICLES.
DE3642262A1 (en) * 1986-12-11 1988-06-23 Stromag Maschf Disengageable coupling
DE3823141A1 (en) * 1988-01-19 1989-07-27 Gedib Ingenieurbuero U Innovat CLAMPING DEVICE FOR MACHINE TOOLS
JP2006283785A (en) * 2005-03-31 2006-10-19 Nabtesco Corp Hydraulic circuit and its valve device
CN104196815B (en) * 2014-08-26 2015-06-17 大连光洋科技集团有限公司 Unpowered hollow push-pull device and clamping device comprising same

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2283961A (en) * 1938-06-09 1942-05-26 Bliss E W Co Pressure booster unit
US2359949A (en) * 1942-06-23 1944-10-10 Adel Prec Products Corp Hydraulic remote control system
US2599664A (en) * 1950-03-01 1952-06-10 Cushman Chuck Co Swivel connection for airoperated chucks
US2780065A (en) * 1955-07-20 1957-02-05 Letourneau Westinghouse Compan Closed hydraulic system
US2809612A (en) * 1956-11-28 1957-10-15 Whiton Machine Company Valve and cylinder construction for an air operated chuck
FR1215943A (en) * 1957-11-29 1960-04-21 Adamovske Strojirny Np Safety device for pressurized installations
US3145662A (en) * 1960-09-06 1964-08-25 Eickmann Karl Device for damping vibrations, fluctuations of pressure and fluctuation of deliveryvolume or suction volume of rotary piston machines
US3213874A (en) * 1961-06-02 1965-10-26 Parker Hannifin Corp Pressure responsive flow control valve for directional control valve
US3369464A (en) * 1964-01-24 1968-02-20 Forkardt Paul Kg Method of and apparatus for actuating double-acting rotatable clamping means, especially for working spindles
CH471328A (en) * 1968-04-30 1969-04-15 Forkardt Paul Kg Device for supplying pressure fluid to a rotating, double-acting hydraulic cylinder
FR2033691A5 (en) * 1969-03-07 1970-12-04 Roehm Gmbh

Also Published As

Publication number Publication date
JPS4916074A (en) 1974-02-13
US3892165A (en) 1975-07-01
FR2180425B1 (en) 1974-08-30
FR2180425A1 (en) 1973-11-30
DE2318240A1 (en) 1973-10-25
IT981790B (en) 1974-10-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee