GB937714A - Improvements in and relating to speed control of hydraulic presses - Google Patents

Improvements in and relating to speed control of hydraulic presses

Info

Publication number
GB937714A
GB937714A GB1887061A GB1887061A GB937714A GB 937714 A GB937714 A GB 937714A GB 1887061 A GB1887061 A GB 1887061A GB 1887061 A GB1887061 A GB 1887061A GB 937714 A GB937714 A GB 937714A
Authority
GB
United Kingdom
Prior art keywords
speed
pressure fluid
bottle
piston
control means
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
GB1887061A
Inventor
Robert Max Ludwig Elkan
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.)
Loewy Engineering Co Ltd
Original Assignee
Loewy Engineering Co 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 Loewy Engineering Co Ltd filed Critical Loewy Engineering Co Ltd
Priority to GB1887061A priority Critical patent/GB937714A/en
Publication of GB937714A publication Critical patent/GB937714A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B30B15/18Control arrangements for fluid-driven presses controlling the reciprocating motion of the ram
    • B30B15/20Control arrangements for fluid-driven presses controlling the reciprocating motion of the ram controlling the speed of the ram, e.g. the speed of the approach, pressing or return strokes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

937,714. Electric correspondence control systems. LOEWRY ENGINEERING CO. Ltd. May 25, 1962 [May 25, 1961], No. 18870/61. Class 40 (1). [Also in Group XXIX] A system for measuring or controlling the speed of a ram of an hydraulic press, comprises a device which measures the rate of change of the level of pressure fluid in an accumulator which supplies pressure fluid to advance the ram. An extrusion press comprises a main cylinder a and main ram b, the main cylinder being supplied with pressure fluid from an accumulator comprising a water bottle g and a compressed air bottle h. A piston i separates air and water in bottles g and movement of the piston i is transmitted by a rod and roller k, which may incorporate a rack-and-pinion gear, to a tacho-generator l, which supplies a voltage, proportional to the speed of piston i, to a speed-control means m. Speed-control means m may incorporate a valve whose opening varies with the input voltage. The pumps n may be used for refilling the bottle g, or pressure fluid may be supplied to the cylinder a by pumps and accumulator together. In the latter case a flow-meter p is provided whose output in the form of a voltage is also fed into speed-control means m. The bottle g may be fitted with a magnetic float and an electric induction coil to measure the rate of change of level in place of the arrangement described above.
GB1887061A 1961-05-25 1961-05-25 Improvements in and relating to speed control of hydraulic presses Expired GB937714A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1887061A GB937714A (en) 1961-05-25 1961-05-25 Improvements in and relating to speed control of hydraulic presses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1887061A GB937714A (en) 1961-05-25 1961-05-25 Improvements in and relating to speed control of hydraulic presses

Publications (1)

Publication Number Publication Date
GB937714A true GB937714A (en) 1963-09-25

Family

ID=10119836

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1887061A Expired GB937714A (en) 1961-05-25 1961-05-25 Improvements in and relating to speed control of hydraulic presses

Country Status (1)

Country Link
GB (1) GB937714A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT398942B (en) * 1987-04-02 1995-02-27 Laeis & Bucher Gmbh DOSING DEVICE FOR DETERMINING THE DISCHARGE AND LOAD VOLUME OF THE HYDRAULIC LIQUID OF A DOSABLE ENERGY STORAGE OF A HYDRAULIC SYSTEM, IN PARTICULAR A HYDRAULIC IMPACT PRESS
CN106723674A (en) * 2016-12-23 2017-05-31 戴得夫 A kind of mechanical decompressor of small-sized efficient rate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT398942B (en) * 1987-04-02 1995-02-27 Laeis & Bucher Gmbh DOSING DEVICE FOR DETERMINING THE DISCHARGE AND LOAD VOLUME OF THE HYDRAULIC LIQUID OF A DOSABLE ENERGY STORAGE OF A HYDRAULIC SYSTEM, IN PARTICULAR A HYDRAULIC IMPACT PRESS
CN106723674A (en) * 2016-12-23 2017-05-31 戴得夫 A kind of mechanical decompressor of small-sized efficient rate
CN106723674B (en) * 2016-12-23 2019-03-19 戴得夫 A kind of mechanical stamping device of small-sized efficient rate

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