GB749571A - Improvements in or relating to hydraulic apparatus and methods of operation thereof - Google Patents

Improvements in or relating to hydraulic apparatus and methods of operation thereof

Info

Publication number
GB749571A
GB749571A GB1601651A GB1601651A GB749571A GB 749571 A GB749571 A GB 749571A GB 1601651 A GB1601651 A GB 1601651A GB 1601651 A GB1601651 A GB 1601651A GB 749571 A GB749571 A GB 749571A
Authority
GB
United Kingdom
Prior art keywords
ram
rams
main ram
caused
billet
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
GB1601651A
Inventor
Reginald Victor Rowles
Robert Madeley
Bertram Thomas Gowing
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.)
Fielding and Platt Ltd
Original Assignee
Fielding and Platt Ltd
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 Fielding and Platt Ltd filed Critical Fielding and Platt Ltd
Priority to GB1601651A priority Critical patent/GB749571A/en
Publication of GB749571A publication Critical patent/GB749571A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/10—Drives for forging presses
    • B21J9/12—Drives for forging presses operated by hydraulic or liquid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/21—Presses specially adapted for extruding metal
    • B21C23/211—Press driving devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B21J9/06—Swaging presses; Upsetting presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/10—Drives for forging presses
    • B21J9/20—Control devices specially adapted to forging presses not restricted to one of the preceding subgroups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • B30B15/163—Control arrangements for fluid-driven presses for accumulator-driven presses

Abstract

749,571. Extruding. FIELDING & PLATT, Ltd. June 19, 1952 [July 5, 1951; July 5, 1951; July 5, 1951; Nov. 29, 1951; June 4, 1952], Nos. 16016/51, 16017/51, 16018/51, 28068/51 and 14142/52. Drawings to Specification. Class 83 (4). [Also in Group XXIX] Metal is extruded by means of hydraulic apparatus (see Group XXIX) which includes a main ram opposed by a holding ram or rams subjected to hydraulic pressure from an accumulator. The main ram is caused to perform the extrusion operation by releasing the pressure from the holding ram cylinder or cylinders. Speed may be controlled by a throttle valve between the accumulator and the main ram cylinder or in the exhaust from the holding ram cylinders. The thrust member associated with the ram may be spaced from the billet of material to be extruded or be caused to rest in contact with the billet by means of a separate ram or rams connected to the main ram, which separate rams are caused to force the main ram down against the action of the holding rams. The Specification also describes an embodiment in which indirect flow of the extruded product is obtained. In this embodiment the billet container is caused to move at a selected rate with respect to the billet over a fixed die element by means of hydraulic rams connected through valves to the hydraulic accumulator.
GB1601651A 1951-07-05 1951-07-05 Improvements in or relating to hydraulic apparatus and methods of operation thereof Expired GB749571A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1601651A GB749571A (en) 1951-07-05 1951-07-05 Improvements in or relating to hydraulic apparatus and methods of operation thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1601651A GB749571A (en) 1951-07-05 1951-07-05 Improvements in or relating to hydraulic apparatus and methods of operation thereof

Publications (1)

Publication Number Publication Date
GB749571A true GB749571A (en) 1956-05-30

Family

ID=10069649

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1601651A Expired GB749571A (en) 1951-07-05 1951-07-05 Improvements in or relating to hydraulic apparatus and methods of operation thereof

Country Status (1)

Country Link
GB (1) GB749571A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2036711A1 (en) * 2007-09-12 2009-03-18 Trumpf Maschinen Austria GmbH & CO. KG. Drive device for a press brake
CN102155445A (en) * 2011-02-22 2011-08-17 山东泰丰液压股份有限公司 Hydraulic control system with double-feedback active proportional servo cartridge valve for CNC (Computer Numerical Control) bending machine
EP4100242A4 (en) * 2020-01-30 2023-10-25 Moviator Oy Hydraulic press and method for pressing objects

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2036711A1 (en) * 2007-09-12 2009-03-18 Trumpf Maschinen Austria GmbH & CO. KG. Drive device for a press brake
WO2009033199A1 (en) * 2007-09-12 2009-03-19 Trumpf Maschinen Austria Gmbh & Co. Kg. Drive device for a bending press
US8342086B2 (en) 2007-09-12 2013-01-01 Trumpf Maschinen Austria Gmbh & Co. Kg. Drive device for a bending press
CN101835601B (en) * 2007-09-12 2013-06-26 特鲁普机械奥地利有限公司及两合公司 Drive device for a bending press
CN102155445A (en) * 2011-02-22 2011-08-17 山东泰丰液压股份有限公司 Hydraulic control system with double-feedback active proportional servo cartridge valve for CNC (Computer Numerical Control) bending machine
CN102155445B (en) * 2011-02-22 2013-07-03 山东泰丰液压股份有限公司 Hydraulic control system with double-feedback active proportional servo cartridge valve for CNC (Computer Numerical Control) bending machine
EP4100242A4 (en) * 2020-01-30 2023-10-25 Moviator Oy Hydraulic press and method for pressing objects

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