GB750282A - Fluid-pressure actuated apparatus - Google Patents

Fluid-pressure actuated apparatus

Info

Publication number
GB750282A
GB750282A GB5243/54A GB524354A GB750282A GB 750282 A GB750282 A GB 750282A GB 5243/54 A GB5243/54 A GB 5243/54A GB 524354 A GB524354 A GB 524354A GB 750282 A GB750282 A GB 750282A
Authority
GB
United Kingdom
Prior art keywords
valves
rams
arm
correcting
pivot
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
GB5243/54A
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.)
Chambersburg Engineering Co
Original Assignee
Chambersburg Engineering Co
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 Chambersburg Engineering Co filed Critical Chambersburg Engineering Co
Publication of GB750282A publication Critical patent/GB750282A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00Forging presses
    • B21J9/10Drives for forging presses
    • B21J9/12Drives for forging presses operated by hydraulic or liquid pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/20Drives for hammers; Transmission means therefor
    • B21J7/22Drives for hammers; Transmission means therefor for power hammers
    • B21J7/34Drives for hammers; Transmission means therefor for power hammers operating both the hammer and the anvil, so-called counter-tup
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00Forging presses
    • B21J9/10Drives for forging presses
    • B21J9/20Control devices specially adapted to forging presses not restricted to one of the preceding subgroups
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B15/00Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16Control arrangements for fluid-driven presses
    • B30B15/24Control arrangements for fluid-driven presses controlling the movement of a plurality of actuating members to maintain parallel movement of the platen or press beam
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/22Synchronisation of the movement of two or more servomotors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Forging (AREA)

Abstract

750,282. Forging-presses. CHAMBERS-BURG ENGINEERING CO. Feb. 23, 1954 [May 26, 1953], No. 5243/54. Class 83 (4). [Also in Group XXVI] A fluid-pressure operated apparatus particularly an impact forging press, has a pair of coaxial rams 13, 14, movable towards and away from each other by pressure fluid supplied to their respective cylinders 11, 12, and means 56, 57 are provided for detecting lack of synchronism in the movements of the rams and for controlling interconnected correcting valves 35, 38 which vary differentially the flow of pressure fluid to and/or from the cylinders so as to restore synchronism. The press rams carry doubleacting pistons 15, 16 operated by compressed air distributed to either end of the cylinders through passages 23, 24 by distributing valves 27, 28 remotely controlled by a lever 41 through transmitters 39, 40 and receivers 42, 43, which may be hydraulic or electric. A one-way valve 30 communicating with the passage 23 through duct 29 allows the air to enter the outer end of each cylinder to initiate the working stroke and permits air to be trapped in the end of the cylinder to cushion the return stroke. Throttle valves 34, 37 in the supply lines are remotely controlled by a lever 46 through transmitters 44, 45 and receivers 47, 48; these valves regulate the speed of the rams. Forging dies 19, 20 are mounted respectively in heads 17, 18 having cam surfaces 60, 61, co-operating with the detecting levers 56, 57 pivoted on fixed pivots 58, 59. These levers are connected by spring-loaded links 62, 63 to the opposite ends of a rocker arm 54 pivoted at 55 on a swinging arm 50 mounted on a stationary pivot 51 and connected at 52 to a link 49 interconnecting the correcting valves 35, 38. When the rams are in phase the rocker arm 54 moves about its pivot 55 without disturbing the arm 50 but if the rams are out of phase the forces on the rocker arm are unbalanced and cause the arm 50 to swing about its pivot 51 thereby to regulate the correcting valves 35, 38, and restore synchronism. These correcting valves may be in the inlet or exhaust passages 23 or 24 or separate interconnected valves may be provided in both the inlet and exhaust passages, Fig. 8 (not shown).
GB5243/54A 1953-05-26 1954-02-23 Fluid-pressure actuated apparatus Expired GB750282A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US750282XA 1953-05-26 1953-05-26

Publications (1)

Publication Number Publication Date
GB750282A true GB750282A (en) 1956-06-13

Family

ID=22123078

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5243/54A Expired GB750282A (en) 1953-05-26 1954-02-23 Fluid-pressure actuated apparatus

Country Status (1)

Country Link
GB (1) GB750282A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007059723A1 (en) * 2005-11-25 2007-05-31 Beab Brandenburg/H. Engineering & Anlagenbau Gmbh Synchronizing device for a group of hydraulic working cylinders
WO2009021500A1 (en) * 2007-08-16 2009-02-19 Hegenscheidt-Mfd Gmbh & Co. Kg Hydraulic wheel set press
WO2013131394A1 (en) * 2012-03-05 2013-09-12 南通天田机床有限公司 Novel forging and charging/discharging two-purpose machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007059723A1 (en) * 2005-11-25 2007-05-31 Beab Brandenburg/H. Engineering & Anlagenbau Gmbh Synchronizing device for a group of hydraulic working cylinders
WO2009021500A1 (en) * 2007-08-16 2009-02-19 Hegenscheidt-Mfd Gmbh & Co. Kg Hydraulic wheel set press
US9205516B2 (en) 2007-08-16 2015-12-08 Hegenscheidt-Mfd Gmbh & Co. Kg Hydraulic wheel set press
WO2013131394A1 (en) * 2012-03-05 2013-09-12 南通天田机床有限公司 Novel forging and charging/discharging two-purpose machine

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