EP1055466B1 - Système d'entraínement hydraulique pour une machine d'assemblage - Google Patents

Système d'entraínement hydraulique pour une machine d'assemblage Download PDF

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Publication number
EP1055466B1
EP1055466B1 EP00110295A EP00110295A EP1055466B1 EP 1055466 B1 EP1055466 B1 EP 1055466B1 EP 00110295 A EP00110295 A EP 00110295A EP 00110295 A EP00110295 A EP 00110295A EP 1055466 B1 EP1055466 B1 EP 1055466B1
Authority
EP
European Patent Office
Prior art keywords
drive
punch
clamp
pressure
piston
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 - Lifetime
Application number
EP00110295A
Other languages
German (de)
English (en)
Other versions
EP1055466A2 (fr
EP1055466A3 (fr
Inventor
Hans Jörg Lang
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.)
Boellhoff GmbH
Original Assignee
Boellhoff 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 Boellhoff GmbH filed Critical Boellhoff GmbH
Publication of EP1055466A2 publication Critical patent/EP1055466A2/fr
Publication of EP1055466A3 publication Critical patent/EP1055466A3/fr
Application granted granted Critical
Publication of EP1055466B1 publication Critical patent/EP1055466B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
    • B21D39/031—Joining superposed plates by locally deforming without slitting or piercing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49833—Punching, piercing or reaming part by surface of second part
    • Y10T29/49835—Punching, piercing or reaming part by surface of second part with shaping
    • Y10T29/49837—Punching, piercing or reaming part by surface of second part with shaping of first part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53039—Means to assemble or disassemble with control means energized in response to activator stimulated by condition sensor
    • Y10T29/53061—Responsive to work or work-related machine element
    • Y10T29/53065—Responsive to work or work-related machine element with means to fasten by deformation
    • Y10T29/5307—Self-piercing work part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • Y10T29/5377—Riveter

Definitions

  • the present invention relates to a hydraulic drive device for a tool for joining at least two workpieces made of ductile material according to the preamble of claim 1, especially for punch riveting or clinching.
  • Such drive devices settle usually from a stamp drive for actuating a stamp for the joining process and a hold-down drive for actuating the workpieces during of the holding-down clamp.
  • Both drives are designed as a piston-cylinder unit, the cylinders of the two drives are firmly connected and the piston of the hold-down drive between the piston rod of the punch drive and the cylinder of the hold-down drive is arranged concentrically so that it has a pressure chamber with a own pressure medium connection to generate the hold-down force telescopically is movable.
  • a spring is used, but there are a total of three pressure medium connections (two for the punch drive and one for the hold-down drive) required what the drive device and in particular its hydraulic supply comparatively expensive.
  • the present invention has for its object a hydraulic Drive device for a tool for joining at least two workpieces to create from ductile material that has the simplest possible structure and nevertheless the generation of a uniform hydraulic hold-down force for The workpieces can be clamped.
  • the hold-down drive from the piston rod of the punch drive, and the pressure chamber of the hold-down drive is connected to a working chamber of the stamp drive, so that Generate the hold-down force from this working chamber to the pressure chamber of the hold-down drive is transmitted.
  • connection of the relevant working chamber is expedient Stamp drive via a pressure relief valve with a low pressure range connectable to the pressure in the pressure chamber of the hold-down drive and thus limit the hold-down force to an adjustable value.
  • the drive device designed according to the invention is also distinguished by comparatively low manufacturing costs, which by the simplified Structure, the smaller number of stroke-dependent individual parts and a simpler one Hydraulic supply are conditional.
  • Figures 1 to 4 each represent a longitudinal section through a hydraulic Drive device in different operating states.
  • the drive device shown in the figures is used for punch riveting two plate-shaped workpieces A, B, which are supported on a die M.
  • the drive device can also be used for other joining processes, e.g. to the Clinching or in general for machining workpieces by means of a stamp such as used in punching.
  • the drive device has a stamp drive 2 in the form of a piston-cylinder unit with a cylinder 4, for example on a C-frame (not shown) is firmly attached.
  • a piston 6 In the cylinder 4 is a piston 6 with a piston rod 8 slidably mounted.
  • the piston 6 divides the interior the cylinder 4 into a first working chamber 12 and a second working chamber 14, each with its own connection 16 or 18 with a hydraulic Pressure medium source (not shown) can be connected.
  • the piston rod 8 is fixed at its lower end with a stamp 10 connected, in the illustrated embodiment for performing the riveting process serves.
  • the piston rod 8 of the stamp drive 2 carries a hold-down drive in a self-supporting manner 20, which is also designed as a piston-cylinder unit. More accurate said hold-down drive 20 has a piston 22 which is connected to piston rod 8 molded in one piece, that is firmly connected to the piston rod 8.
  • the hold-down drive 20 also has a cylinder 24 on the piston rod 8 of the stamp drive 2 is mounted telescopically so that the piston 22 and the Cylinder 24 are slidable relative to each other.
  • the cylinder 24 is at its lower end with a hold-down 30 in Form of a mouthpiece firmly connected, in which the stamp 10 is slidably guided and that for holding down (prestressing) the workpieces A, B on the die M serves.
  • the cylinder 24 consists of an outer sleeve 26 which is on an upper portion the piston rod 8 is slidably guided, and an inner sleeve 28 which a lower portion of the piston rod 8 is slidably such that between the piston 22, the inner wall of the sleeve 24 and the front end of the Sleeve 28 a pressure chamber 32 is formed.
  • the pressure chamber 32 of the hold-down drive 20 is via a flow connection 34 connected to the working chamber 14 of the stamp drive 2.
  • the - Always open - flow connection 34 consists of a in the piston rod 8 centrally arranged, longitudinal flow channel 36, the branch channels 38 with the working chamber 8 and via branch channels 40 with the pressure chamber 32 connected is.
  • connection 18 is via a pressure relief valve 40 connectable to a low pressure area (tank, not shown), in order to limit the pressure in the working chamber 8 and thus in the pressure chamber 32, as will be explained in more detail.
  • the pressure relief valve 40 acts it is preferably a controllable pressure relief valve, the Limit value can be set manually, for example.
  • a check valve 44 through a bypass line 42 to the Pressure relief valve 40 connected in parallel to supply the port 18 with pressure to be able, as will also be explained in more detail.
  • the hold-down device presses 30 the workpieces A, B against the die M with a uniform hold-down force, the size of which through the flow connection 34 to the Pressure chamber 32 transmitted, limited by the pressure relief valve 40 Pressure is determined.
  • the piston 6 moves with its piston rod 8 and the stamp 10 attached to it further down to finally complete the joining process perform (Fig. 3).
  • this further downward movement there is a Relative displacement between the piston provided on the piston rod 8 22 and the cylinder 24 supported on the workpieces A, B of the hold-down drive 20.
  • This causes pressure medium from the pressure chamber 32 via the flow connection 34, the working chamber 8 and the port 18 through the pressure relief valve 40 displaced through to the low pressure area.
  • the pressure relief valve 40 ensures that the hold-down 30 on the workpieces A, B maintain hold-down force unchanged remains.
  • the working chamber 12 is connected 16 relieved of pressure and the working chamber 8 via the connection 18 with pressure supplied so that the piston 6 with the piston rod 8 and the stamp 10 is reset are (Fig. 4).
  • the working chamber 8 and the flow connection 34 also the pressure chamber 32 again with hydraulic fluid filled until the drive device again its basic position shown in Fig. 1 occupies.
  • the piston rod 8 has in the area of the working chamber 14 an outer diameter that is only slightly smaller than the inner diameter of the cylinder 4 is.
  • the displacement volume and the cross-sectional area the working chamber 4 are therefore very small. This ensures that the reaction force caused by the pressure in the working chamber, that of the piston 6 must overcome the punch drive 2 in its feed movement, comparatively is low.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Press Drives And Press Lines (AREA)
  • Jigs For Machine Tools (AREA)
  • Punching Or Piercing (AREA)
  • Automatic Assembly (AREA)

Claims (7)

  1. Dispositif hydraulique d'entraínement d'un outil pour assembler au moins deux pièces à assembler en matériau ductile, comportant
    un entraínement de poinçon (2) pour actionner un poinçon (10) pour l'opération d'assemblage, lequel entraínement de poinçon (2) est réalisé sous la forme d'une unité piston-cylindre comportant une première et une deuxième chambre dé travail (12, 14), la première chambre de travail (12) pouvant être alimentée en pression par l'intermédiaire d'un premier raccordement (16) pour produire la force d'assemblage du poinçon (10), et la deuxième chambre de travail (14) pouvant être alimentée en pression au moyen d'un deuxième raccordement (18) pour rappeler en arrière le poinçon (10),
    un entraínement de maintien en position basse (20) pour actionner un dispositif de maintien en position basse (30) mettant en tension les pièces à assembler (A, B) pendant l'opération d'assemblage, lequel entraínement de maintien en position basse (20) est réalisé sous la forme d'une unité piston-cylindre comportant une chambre de pression (32) qui peut être mise en pression pour produire la force de maintien en position basse du dispositif de maintien en position basse (30),
       caractérisé en ce que
    l'unité piston-cylindre de l'entraínement de maintien en position basse (20) est portée par la tige de piston (8) de l'entraínement de poinçon (2), et
    en ce que la chambre de pression (32) de l'entraínement de maintien en position basse (20) est reliée, par l'intermédiaire d'une liaison d'écoulement (34), à la deuxième chambre de travail (14) de l'entraínement de poinçon (2), de telle façon que, pour produire la force de maintien en position basse, la pression provenant de la deuxième chambre de travail (14) de l'entraínement de poinçon (2) est transmise à la chambre de pression (32) de l'entraínement de maintien en position basse (20).
  2. Dispositif hydraulique d'entraínement suivant la revendication 1, caractérisé en ce que le raccordement (18) de la deuxième chambre de travail (14) de l'entraínement de poinçon (2) peut être relié, par l'intermédiaire d'une soupape de limitation de pression (40), à une zone de basse pression, pour limiter, au moyen de la liaison d'écoulement (34), la pression dans la chambre de pression (32) de l'entraínement de maintien en position basse (20) et, de ce fait, la force de maintien en position basse.
  3. Dispositif hydraulique d'entraínement suivant la revendication 1 ou 2, caractérisé en ce que le piston (22) de l'entraínement de maintien en position basse (20) est relié solidairement à la tige de piston (8) de l'entraínement de poinçon (2) et en ce que le cylindre (24) de l'entraínement de maintien en position basse (20) est monté sur la tige de piston (8) de l'entraínement de poinçon (2), en pouvant coulisser de façon télescopique.
  4. Dispositif hydraulique d'entraínement suivant la revendication 3, caractérisé en ce que le dispositif de maintien en position basse (30) est relié solidairement au cylindre (24) de l'entraínement de maintien en position basse (20).
  5. Dispositif hydraulique d'entraínement suivant l'une des revendications précédentes, caractérisé en ce que la liaison d'écoulement (34) est constituée par un canal d'écoulement (36) disposé longitudinalement dans la tige de piston (8) de l'entraínement de poinçon (2) et par des canaux de dérivation (38, 40) partant de ce canal d'écoulement (36) et débouchant dans la deuxième chambre de travail (14) et dans la chambre de pression (32).
  6. Dispositif hydraulique d'entraínement suivant l'une des revendications précédentes, caractérisé en ce que le piston (22) de l'entraínement de maintien en position basse (20) est formé sur la tige de piston (8) de l'entraínement de poinçon (2), en formant une seule pièce.
  7. Dispositif hydraulique d'entraínement suivant l'une des revendications précédentes, caractérisé en ce que le diamètre extérieur de la tige de piston (8) de l'entraínement de poinçon (2), dans la zone de la deuxième chambre de travail, est seulement légèrement plus petit que le diamètre intérieur du cylindre (4) de l'entraínement de poinçon (2).
EP00110295A 1999-05-27 2000-05-23 Système d'entraínement hydraulique pour une machine d'assemblage Expired - Lifetime EP1055466B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19924310 1999-05-27
DE19924310A DE19924310B4 (de) 1999-05-27 1999-05-27 Hydraulische Antriebseinrichtung für ein Fügewerkzeug

Publications (3)

Publication Number Publication Date
EP1055466A2 EP1055466A2 (fr) 2000-11-29
EP1055466A3 EP1055466A3 (fr) 2002-07-24
EP1055466B1 true EP1055466B1 (fr) 2004-07-21

Family

ID=7909359

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00110295A Expired - Lifetime EP1055466B1 (fr) 1999-05-27 2000-05-23 Système d'entraínement hydraulique pour une machine d'assemblage

Country Status (4)

Country Link
US (1) US6398096B1 (fr)
EP (1) EP1055466B1 (fr)
DE (2) DE19924310B4 (fr)
ES (1) ES2224962T3 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10031073B4 (de) * 2000-06-30 2016-11-24 Gustav Klauke Gmbh Verfahren zum Vernieten
US20060251495A1 (en) * 2001-03-09 2006-11-09 Reinhold Opper Self-piercing rivet, process and device for setting a rivet element, and employment thereof
JP4071634B2 (ja) * 2001-03-09 2008-04-02 ニューフレイ リミテッド ライアビリティ カンパニー 自動穿孔リベット、リベット要素を取り付ける方法及び装置、並びにその使用
DE20106207U1 (de) * 2001-04-09 2001-06-21 Boellhoff Gmbh Antriebseinrichtung für ein Einpresswerkzeug
ITTO20010659A1 (it) * 2001-07-06 2003-01-06 Comau Spa Dispositivo integrato di bloccaggio e clinciatura, particolarmente per l'unione di pannelli di lamiera metallica e simili.
JP2004060855A (ja) * 2002-07-31 2004-02-26 Nippon Pop Rivets & Fasteners Ltd セルフピアシングリベット
DE102004005884B4 (de) * 2004-02-05 2012-03-29 Newfrey Llc Fügeeinrichtung mit einem Stempelwerkzeug und einem Gegenwerkzeug und einem Halter
DE102005031917A1 (de) * 2004-09-24 2006-04-13 Böllhoff Verbindungstechnik GmbH Verfahren zum Fügen und Vorrichtung zum Betätigen eines Fügewerkzeuges
DE102005041534A1 (de) 2005-08-31 2007-03-01 Newfrey Llc, Newark Verfahren und Vorrichtung zum Zuführen von Verbindungselementen zu einem Verarbeitungsgerät
SK932007A3 (sk) * 2007-07-09 2009-02-05 Konek, S. R. O. Hydraulické rozrušovacie kladivo
DE102009034542B4 (de) * 2008-07-23 2017-05-24 Richard Bergner Verbindungstechnik Gmbh & Co. Kg Bearbeitungseinheit sowie Verfahren für die Bearbeitung eines Werkstücks mit einem Bearbeitungswerkzeug
DE102011002058A1 (de) * 2011-04-14 2012-10-18 Böllhoff Verbindungstechnik GmbH Hydraulisch betriebenes Setzgerät mit einem Hydraulikaggregat und ein Fügeverfahren zum Verbinden von mindestens zwei Bauteilen
CN109454194A (zh) * 2018-07-27 2019-03-12 宾科精密部件(中国)有限公司 流体压力驱动的压铆装置
DE102021104620B4 (de) 2021-02-26 2023-12-07 Dieter Schmidt Krafteinheit für eine Bearbeitungsstation zum Be- und/oder Verarbeiten von Werkstücken und zugehörige Bearbeitungsstation

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
US4096727A (en) * 1976-04-29 1978-06-27 Daniel Pierre Gargaillo Punching, stamping and rivetting apparatus
US4516448A (en) * 1982-09-07 1985-05-14 Houdaille Industries, Inc. Punch and ram assembly for punch press
GB9211785D0 (en) * 1992-06-04 1992-07-15 Ariel Ind Plc Improved design of fastener application machine
GB9226517D0 (en) * 1992-12-19 1993-02-10 Henrob Ltd Improvements in or relating to sefl-piercing riveting
SE500967C2 (sv) * 1993-11-18 1994-10-10 Pressmaster Tool Ab Förfarande för drivning av ett hydrauliskt arbetsverktyg och anordning för genomförande av förfarandet
US6276050B1 (en) * 1998-07-20 2001-08-21 Emhart Inc. Riveting system and process for forming a riveted joint
ES2193444T3 (es) * 1997-07-26 2003-11-01 Eibes Kerb Konus Gmbh Hokramienta de estampado y corte.
DE19752367A1 (de) * 1997-11-26 1999-05-27 Emhart Inc Verfahren und Vorrichtung zur Herstellung einer Stanznietverbindung

Also Published As

Publication number Publication date
DE50007105D1 (de) 2004-08-26
EP1055466A2 (fr) 2000-11-29
US6398096B1 (en) 2002-06-04
ES2224962T3 (es) 2005-03-16
DE19924310A1 (de) 2000-11-30
EP1055466A3 (fr) 2002-07-24
DE19924310B4 (de) 2007-11-22

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