EP1292406A1 - Procede servant a faire fonctionner un dispositif de transport de pieces a usiner destine a une presse - Google Patents

Procede servant a faire fonctionner un dispositif de transport de pieces a usiner destine a une presse

Info

Publication number
EP1292406A1
EP1292406A1 EP01957820A EP01957820A EP1292406A1 EP 1292406 A1 EP1292406 A1 EP 1292406A1 EP 01957820 A EP01957820 A EP 01957820A EP 01957820 A EP01957820 A EP 01957820A EP 1292406 A1 EP1292406 A1 EP 1292406A1
Authority
EP
European Patent Office
Prior art keywords
workpiece transport
drive device
braking
press system
torque
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.)
Withdrawn
Application number
EP01957820A
Other languages
German (de)
English (en)
Inventor
Burkhard Schumann
Kurt Metzger
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.)
L Schuler GmbH
Original Assignee
L Schuler 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 L Schuler GmbH filed Critical L Schuler GmbH
Publication of EP1292406A1 publication Critical patent/EP1292406A1/fr
Withdrawn legal-status Critical Current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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices

Definitions

  • the invention relates to a method for operating a workpiece transport device for a press system according to the type defined in more detail in the preamble of claim 1. Furthermore, the invention relates to a device for carrying out the method.
  • mechanical holding devices are also used in a likewise general prior art, which have a positive connection to the respective device part.
  • these are relatively expensive to manufacture, have to be adapted separately for each device and therefore cause relatively high costs.
  • the braking devices normally used, described above, on the other hand, are standard parts, which results in relatively low costs and very low installation costs.
  • a further advantage of the known braking devices is the lower braking torque required, since the drive is usually reduced and the torque is increased after the braking device.
  • the predetermined torque applied by the drive device lies in a range which is slightly lower than the torque to be applied by the brake device, the torque applied by the mass of the workpiece and the workpiece transport device naturally having to be taken into account.
  • Another advantage of the method according to the invention is that no additional hardware is required is required because standard parts can be used. This advantageously does not result in an increase in the moment of inertia.
  • the predetermined torque can alternatively be applied manually by an operator when the press system is switched on or at any time when the press system is at a standstill.
  • the braking torque of the braking device is too low, appropriate measures for personal safety can be taken, i.e. the workpiece transport device and / or the press system can then be switched off.
  • a device for performing the method according to the invention is specified in claim 9.
  • the single figure shows a schematic representation of a workpiece transport device for a press system with which the method according to the invention can be carried out.
  • a weight compensation device 6 which is pneumatically operated and known per se, engages the belt drive 3 on.
  • a braking device 8 also acts on an output shaft 7 of the electric motor 5.
  • the braking device 8 engage at any other point within the workpiece transport device 1 at which it is able to prevent unwanted movement of the workpiece 2.
  • the braking device 8 has at least one, in the present case, however, two friction linings 9, but in the present case is designed as a pure holding brake or static brake, ie the friction linings 9 are designed so that they only brake the workpiece 2 in an emergency, that is, braking from the movement of the workpiece 2, can be used and are subject to relatively high wear in such service braking.
  • the holding torque is applied to the braking device 8 by spring force and the braking device 8 can be ventilated electrically or hydraulically.
  • a service brake as a braking device 8 would also be conceivable.
  • An encoder or displacement sensor 10 is connected to the output shaft 7 of the electric motor 5 and transmits the respective position of the output shaft 7 and thus of the workpiece 2 as an electrical pulse to a control device 11.
  • the control device 11 is in turn connected to a current generator or converter 12, which supplies the electric motor 5 with a specific current intensity and thus controls its drive power and thus the distance traveled by the workpiece 2 and its speed.
  • the displacement sensor 10, the control device 11 and the current transmitter 12 are of known construction and mode of operation, which are known to a person skilled in the relevant field, and are therefore not to be explained in more detail below.
  • the braking device 8 Whenever the workpiece transport device 1 comes to a standstill, ie the friction linings 9 engage on the output shaft 7 and prevent movement of the same, and thus movement of the workpiece 2. Since the necessary holding torque from the braking device 8 may not occur if the friction linings 9 wear more can be applied, the function of the braking device 8 is checked by applying a predetermined torque by the electric motor 5. This can be carried out cyclically, for example each time the workpiece transport device 1 or the press system is switched off or on, but of course also manually at any other times at a standstill, for example as part of a service interval, by an operator.
  • the torque applied by the electric motor 5 thus counteracts the weight of the workpiece transport device 1 or the workpiece 2 and lies in a range which is slightly lower than the holding torque which can be applied by the braking device 8.
  • This test procedure ensures at all times during operation of the workpiece transport device 1 that the braking device 8 can apply the necessary holding torque.
  • the torque applied by the drive device 5 exceeds the possible holding torque of the braking device 8
  • the workpiece transport device 1 or the press system is switched off immediately, as described above, and potential accidents by repairing the braking device 8 can be avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Braking Arrangements (AREA)
  • Press Drives And Press Lines (AREA)
  • Control Of Conveyors (AREA)

Abstract

La présente invention concerne un procédé servant à faire fonctionner un dispositif de transport de pièces à usiner (1) destiné à une presse, dans lequel le dispositif est entraîné par au moins un dispositif d'entraînement (5) qui peut être maintenu en position de repos par un dispositif de freinage (8). L'application d'un couple de rotation prédéterminé par l'intermédiaire du dispositif d'entraînement permet de vérifier le fonctionnement du dispositif de freinage.
EP01957820A 2000-06-07 2001-06-01 Procede servant a faire fonctionner un dispositif de transport de pieces a usiner destine a une presse Withdrawn EP1292406A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10028147 2000-06-07
DE10028147A DE10028147B4 (de) 2000-06-07 2000-06-07 Verfahren und Vorrichtung zum Betreiben einer Werkstücktransportvorrichtung für eine Pressenanlage
PCT/EP2001/006253 WO2001094047A1 (fr) 2000-06-07 2001-06-01 Procede servant a faire fonctionner un dispositif de transport de pieces a usiner destine a une presse

Publications (1)

Publication Number Publication Date
EP1292406A1 true EP1292406A1 (fr) 2003-03-19

Family

ID=7644967

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01957820A Withdrawn EP1292406A1 (fr) 2000-06-07 2001-06-01 Procede servant a faire fonctionner un dispositif de transport de pieces a usiner destine a une presse

Country Status (7)

Country Link
US (1) US6557463B2 (fr)
EP (1) EP1292406A1 (fr)
KR (1) KR20030007891A (fr)
BR (1) BR0111417A (fr)
CA (1) CA2407289A1 (fr)
DE (1) DE10028147B4 (fr)
WO (1) WO2001094047A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10234072B4 (de) * 2002-07-26 2005-03-31 Müller Weingarten AG Stufenlose Verriegelungsvorrichtung für Werkstücktransportsysteme in Pressen
DE10310925B3 (de) * 2003-03-13 2004-11-04 Müller Weingarten AG Sicherheitsvorrichtung für das Werkstücktransportsystem in einer Presse
DE102004024770B4 (de) * 2003-05-15 2015-02-26 Tox Pressotechnik Gmbh & Co. Kg Sicherheitsprüfung von Maschinenbremsen
DE10349758B3 (de) * 2003-10-24 2005-06-09 Schuler Pressen Gmbh & Co. Kg Antriebseinrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE504479A (fr) * 1951-04-28
DE2606646A1 (de) * 1976-02-19 1977-09-01 Komatsu Maypres Gmbh Presse mit umlaufender antriebswelle
DE2619716A1 (de) * 1976-05-04 1977-11-17 Schuler Gmbh L Vorschubvorrichtung
US5329415A (en) * 1991-04-26 1994-07-12 Aida Engineering Ltd. Clutch-brake drive control for press machine
EP0616882B1 (fr) * 1993-03-23 1998-01-14 Leinhaas Umformtechnik GmbH Méthode de commande hydraulique d'une presse à levier articulée ou à genoullière et presse à levier articulée ou à genoullière avec un système de commande adapté à la mise en oeuvre de la méthode
DE9417269U1 (de) * 1994-10-31 1995-02-09 Höhn, Carsten, Dipl.-Ing, 28832 Achim Gerät zur Prüfung und Überwachung mechanischer Bremsen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0194047A1 *

Also Published As

Publication number Publication date
BR0111417A (pt) 2003-06-10
DE10028147B4 (de) 2004-12-02
KR20030007891A (ko) 2003-01-23
WO2001094047A1 (fr) 2001-12-13
US6557463B2 (en) 2003-05-06
DE10028147A1 (de) 2001-12-20
US20020020306A1 (en) 2002-02-21
CA2407289A1 (fr) 2002-10-22

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