GB771014A - Hydraulically powered machine - Google Patents

Hydraulically powered machine

Info

Publication number
GB771014A
GB771014A GB35381/54A GB3538154A GB771014A GB 771014 A GB771014 A GB 771014A GB 35381/54 A GB35381/54 A GB 35381/54A GB 3538154 A GB3538154 A GB 3538154A GB 771014 A GB771014 A GB 771014A
Authority
GB
United Kingdom
Prior art keywords
ram
machine
pressure
shearing
accumulator
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
GB35381/54A
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.)
Pacific Industrial Manufacturing Co
Original Assignee
Pacific Industrial Manufacturing 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 Pacific Industrial Manufacturing Co filed Critical Pacific Industrial Manufacturing Co
Publication of GB771014A publication Critical patent/GB771014A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
    • B23D15/12—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor
    • B23D15/14—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D33/00—Accessories for shearing machines or shearing devices
    • B23D33/08—Press-pads; Counter-bases; Hold-down devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shearing Machines (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

771,014. Shearing. PACIFIC INDUSTRIAL MANUFACTURING CO. Dec. 7, 1954 [June 25, 1954], No. 35381/54. Class 83 (4). [Also in Group XXIX] The movable ram of a shearing-machine is held by jacks against guideways with light pressure when the machine is inoperative, the pressure increasing as the ram moves down on its shearing stroke. Each jack 269, comprising a piston 275 and a cylinder 271, holds the ram by springs 277 (Fig. 7) when the ram is inoperative and by liquid pressure from an accumulator 219 when the machine is operative. The accumulator is maintained under pressure by an air cushion 223. Piston and cylinder devices 197, 195 hold the work down on a table and are in the same hydraulic circuit as the jacks and the accumulator. The cylinders 195 are mounted on the ram and as the ram moves down are forced over the pistons increasing the pressure in the circuit so that the jacks 269 hold the ram against its guideways with a corresponding increase in pressure. A reservoir for the liquid is formed by a large diameter pipe extending between the end-plates of the machine. The shearing-machine is as described in Specification 770,638, [Group XXI]
GB35381/54A 1954-06-25 1954-12-07 Hydraulically powered machine Expired GB771014A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US771014XA 1954-06-25 1954-06-25

Publications (1)

Publication Number Publication Date
GB771014A true GB771014A (en) 1957-03-27

Family

ID=22136066

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35381/54A Expired GB771014A (en) 1954-06-25 1954-12-07 Hydraulically powered machine

Country Status (1)

Country Link
GB (1) GB771014A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1238424B (en) * 1959-01-02 1967-04-13 Cincinnati Shaper Company Hydraulic bending press or the like.
DE1299973B (en) * 1957-12-24 1969-07-24 Pacific Press & Shear Corp Guillotine shears

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1299973B (en) * 1957-12-24 1969-07-24 Pacific Press & Shear Corp Guillotine shears
DE1238424B (en) * 1959-01-02 1967-04-13 Cincinnati Shaper Company Hydraulic bending press or the like.

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