GB1162504A - Improvements in the Control of Hydraulic Presses. - Google Patents

Improvements in the Control of Hydraulic Presses.

Info

Publication number
GB1162504A
GB1162504A GB56679/66A GB5667966A GB1162504A GB 1162504 A GB1162504 A GB 1162504A GB 56679/66 A GB56679/66 A GB 56679/66A GB 5667966 A GB5667966 A GB 5667966A GB 1162504 A GB1162504 A GB 1162504A
Authority
GB
United Kingdom
Prior art keywords
press
screen
valve
piston
dec
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
GB56679/66A
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
Allmanna Svenska Elektriska AB
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 ASEA AB, Allmanna Svenska Elektriska AB filed Critical ASEA AB
Publication of GB1162504A publication Critical patent/GB1162504A/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
    • B30B15/22—Control arrangements for fluid-driven presses controlling the degree of pressure applied by the ram during the pressing stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Press Drives And Press Lines (AREA)
  • Control Of Presses (AREA)

Abstract

1,162,504. Hydraulic presses. ALLMANNA SVENSKA ELEKTRISKA A.B. 19 Dec., 1966 [20 Dec., 1965], No. 56679/66. Heading B5F. [Also in Division G3] Means for controlling the pressure in an hydraulic press comprises a ray source 12, a ray-sensitive device 13, and a screen 11 movable between the ray source 12 and device 13 under the influence of one of the main movable parts of the press. As shown, the screen 11 is secured to a lower piston 4 of the press, this piston 4 moving in a cylinder 2, the outflow from which is governed by a valve 18. Valve 18 is controlled by an auxiliary hydraulic system 17 including a valve 16 having a solenoid 15 connected through an amplifier 14 to the device 13. As seen in Fig. 2, the device 13 may comprise a large number of separate photo-cell units (21) and the screen 11 may be made of paper, the edge (22) of which is shaped to produce the desired changes in pressure. The press also includes an upper piston 3, a liquid-filled pressure chamber 5 and a rubber diaphragm 6 for shaping a workpiece 7 over a stationary shaping member 8.
GB56679/66A 1965-12-20 1966-12-19 Improvements in the Control of Hydraulic Presses. Expired GB1162504A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE16452/65A SE322193B (en) 1965-12-20 1965-12-20

Publications (1)

Publication Number Publication Date
GB1162504A true GB1162504A (en) 1969-08-27

Family

ID=20302263

Family Applications (1)

Application Number Title Priority Date Filing Date
GB56679/66A Expired GB1162504A (en) 1965-12-20 1966-12-19 Improvements in the Control of Hydraulic Presses.

Country Status (5)

Country Link
US (1) US3430471A (en)
DE (1) DE1577158C3 (en)
FR (1) FR1504330A (en)
GB (1) GB1162504A (en)
SE (1) SE322193B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980002239A1 (en) * 1979-04-17 1980-10-30 Saab Scania Ab An arrangement for presses

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6631630B1 (en) * 2000-09-22 2003-10-14 Board Of Trustees Of Michigan State University Hydroforming of composite materials
FR3031055B1 (en) * 2014-12-29 2017-01-27 Adm28 S Ar L ELECTRO-HYDROFORMING DEVICE

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1818103A (en) * 1926-04-03 1931-08-11 Sperry Gyroscope Co Inc Automatic pilot
US2126887A (en) * 1935-07-05 1938-08-16 Sperry Gyroscope Co Inc Positional control system
US2783728A (en) * 1951-09-12 1957-03-05 Lake Erie Engineering Corp Apparatus for pressing sheet metal shapes
US3357218A (en) * 1965-02-24 1967-12-12 Cincinnati Milling Machine Co Hydraulic press

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980002239A1 (en) * 1979-04-17 1980-10-30 Saab Scania Ab An arrangement for presses

Also Published As

Publication number Publication date
US3430471A (en) 1969-03-04
SE322193B (en) 1970-04-06
DE1577158A1 (en) 1970-03-19
DE1577158B2 (en) 1973-03-15
FR1504330A (en) 1967-12-01
DE1577158C3 (en) 1973-10-04

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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