EP0967028A3 - Hydraulische Presse - Google Patents

Hydraulische Presse Download PDF

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Publication number
EP0967028A3
EP0967028A3 EP99890056A EP99890056A EP0967028A3 EP 0967028 A3 EP0967028 A3 EP 0967028A3 EP 99890056 A EP99890056 A EP 99890056A EP 99890056 A EP99890056 A EP 99890056A EP 0967028 A3 EP0967028 A3 EP 0967028A3
Authority
EP
European Patent Office
Prior art keywords
hydraulic
suction line
hydraulic press
effective area
larger effective
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.)
Granted
Application number
EP99890056A
Other languages
English (en)
French (fr)
Other versions
EP0967028A2 (de
EP0967028B1 (de
Inventor
Martin Dipl.Ing. Rauwolf
Thomas Holderried
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.)
Hoerbiger Hydraulik GmbH
Original Assignee
Hoerbiger Hydraulik GmbH
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 Hoerbiger Hydraulik GmbH filed Critical Hoerbiger Hydraulik GmbH
Publication of EP0967028A2 publication Critical patent/EP0967028A2/de
Publication of EP0967028A3 publication Critical patent/EP0967028A3/de
Application granted granted Critical
Publication of EP0967028B1 publication Critical patent/EP0967028B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Presses (AREA)
  • Press Drives And Press Lines (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

Eine hydraulische Presse weist einen zweiseitig wirkenden hydraulischen Arbeitszylinder (3) mit unterschiedlich großen Wirkflächen auf beiden Seiten des Kolbens (11) auf, wobei die Seite der größeren Wirkfläche über eine zusätzliche Nachsaugleitung (12) mit dem Hydrauliktank (13) verbunden und in diese Nachsaugleitung (12) ein Nachsaugventil (14) eingeschaltet ist, welches während des Arbeitshubes geschlossen und während der Eilhübe geöffnet ist. Um die innere hydraulische Steifigkeit des Systems zu erhöhen ist in der Nachsaugleitung (12) zusätzlich eine schaltbare Drossel (15) angeordnet, welche während des Ausschiebens von Hydraulikmedium aus der Zylinderseite mit größerer Wirkfläche zum Hydrauliktank (13) wirksam ist.
EP19990890056 1998-03-03 1999-02-17 Hydraulische Presse Expired - Lifetime EP0967028B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT37198A AT408851B (de) 1998-03-03 1998-03-03 Hydraulische presse
AT37198 1998-03-03

Publications (3)

Publication Number Publication Date
EP0967028A2 EP0967028A2 (de) 1999-12-29
EP0967028A3 true EP0967028A3 (de) 2002-12-04
EP0967028B1 EP0967028B1 (de) 2004-04-28

Family

ID=3488826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990890056 Expired - Lifetime EP0967028B1 (de) 1998-03-03 1999-02-17 Hydraulische Presse

Country Status (3)

Country Link
EP (1) EP0967028B1 (de)
AT (1) AT408851B (de)
DE (1) DE59909291D1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410469B (de) * 2001-06-27 2003-05-26 Hoerbiger Hydraulik Hydraulische arbeitsmaschine
DE10350483B4 (de) * 2003-10-29 2005-09-22 Müller Weingarten AG Vorrichtung zur Abscheidung von Öl in Hydrauliksystemen
AT505724B1 (de) * 2007-09-12 2010-06-15 Trumpf Maschinen Austria Gmbh Antriebsvorrichtung für eine biegepresse
DE102019209440B3 (de) 2019-06-28 2020-07-30 HAWE Altenstadt Holding GmbH Hydromechanischer Linearwandler

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2542665A1 (de) * 1975-09-25 1977-05-05 Hartmann & Laemmle Kg Vorrichtung zur schlagfreien dekompression, insbesondere hydraulischer systeme
US4307654A (en) * 1978-08-29 1981-12-29 Inter-Hydraulik Ag Filling and exhaust valve for the control of the hydraulic flow on presses and shears
JPH06320219A (ja) * 1993-05-12 1994-11-22 Komatsu Ltd プレスブレーキの油圧制御回路

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658625A (en) * 1984-03-30 1987-04-21 Amada Company, Limited Bending machine and a die changing system for such bending machine
JPH072088Y2 (ja) * 1988-11-15 1995-01-25 株式会社小松製作所 曲げ機械の工具位置制御装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2542665A1 (de) * 1975-09-25 1977-05-05 Hartmann & Laemmle Kg Vorrichtung zur schlagfreien dekompression, insbesondere hydraulischer systeme
US4307654A (en) * 1978-08-29 1981-12-29 Inter-Hydraulik Ag Filling and exhaust valve for the control of the hydraulic flow on presses and shears
JPH06320219A (ja) * 1993-05-12 1994-11-22 Komatsu Ltd プレスブレーキの油圧制御回路

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 02 31 March 1995 (1995-03-31) *

Also Published As

Publication number Publication date
EP0967028A2 (de) 1999-12-29
AT408851B (de) 2002-03-25
EP0967028B1 (de) 2004-04-28
ATA37198A (de) 2001-08-15
DE59909291D1 (de) 2004-06-03

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