EP1472025B1 - Procede d'utilisation d'un systeme d'alimentation de tôles destine a des presses de poinconnage et systeme d'alimentation destine a la mise en oeuvre de ce procede - Google Patents

Procede d'utilisation d'un systeme d'alimentation de tôles destine a des presses de poinconnage et systeme d'alimentation destine a la mise en oeuvre de ce procede Download PDF

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Publication number
EP1472025B1
EP1472025B1 EP20020796733 EP02796733A EP1472025B1 EP 1472025 B1 EP1472025 B1 EP 1472025B1 EP 20020796733 EP20020796733 EP 20020796733 EP 02796733 A EP02796733 A EP 02796733A EP 1472025 B1 EP1472025 B1 EP 1472025B1
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EP
European Patent Office
Prior art keywords
panel
connection means
rear edge
edge area
punching
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
EP20020796733
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German (de)
English (en)
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EP1472025A1 (fr
EP1472025B9 (fr
Inventor
Stefan Haar
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.)
Saeta GmbH and Co KG
Original Assignee
Saeta GmbH and Co KG
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 Saeta GmbH and Co KG filed Critical Saeta GmbH and Co KG
Publication of EP1472025A1 publication Critical patent/EP1472025A1/fr
Publication of EP1472025B1 publication Critical patent/EP1472025B1/fr
Application granted granted Critical
Publication of EP1472025B9 publication Critical patent/EP1472025B9/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
    • 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
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
    • B21D43/11—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers for feeding sheet or strip material
    • 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
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0481—Puncturing
    • 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
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0505—With reorientation of work between cuts
    • 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
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0524—Plural cutting steps
    • Y10T83/0577—Repetitive blanking
    • 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
    • Y10T83/00—Cutting
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/445—With work-moving clamp jaw
    • 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
    • Y10T83/00—Cutting
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/463—Work-feed element contacts and moves with work
    • Y10T83/4632—Comprises a work-moving gripper

Definitions

  • the invention relates to a method for operating a panel system for punching presses according to the preamble of patent claim 1 and a panel system for stamping presses according to the preamble of claim 12.
  • Panel systems serve to feed sheets of, for example, aluminum, positioned to a punch press which punches a predetermined number of blanks from the sheet.
  • first gripping means detects a panel in a transient position on opposite sides. In the transition position, the panel is brought by second gripping means which engage the rear edge of the panel.
  • the transfer position corresponds to a position of the panel in which the punch performs a first punching stroke on the panel.
  • the master carriage having the second gripping means brings the panel only in the transfer position when the first gripping means have reached their receiving position along both axes.
  • the first gripping means are adjustable along two orthogonal axes, so that an offset division of the surfaces to be punched can be selected for the purpose of favorable material utilization.
  • the transfer of the panel in the transfer position to the first gripping means takes place, as mentioned, during the first punching cut, during which the panel is fixed by the punching tool.
  • both axes of the feed for the first gripping means and the feed carriage move to the home and pickup positions in which a new board is picked up.
  • the transitional time for the panels can be significantly reduced as the press continues to move. Preceding panel and the first punching step of the following table. This could possibly be avoided by the cutting ring is lowered.
  • the achievable benefit comes with positioning errors by pulling down the panel at the last cut.
  • one of the two feed pliers is directly on one of the outer tools. If you want to ensure that the upper edge of the lower forceps jaw forms a plane with the cutting ring so that the panel is not pulled around during the last stroke, the pliers will be in a specially shaped pocket of the lower cutting ring for smaller cutting diameters ( ⁇ 100 mm). The newly inserted board must be pushed under the feed pliers. However, this can only be done when the pliers have moved back a sufficient distance to leave enough space for the incoming table. The leading edge of the board to be retracted must be raised to the height of the cut ring.
  • the punch press runs as fast as the feed allows. But then there is no time left for the board for extra actions like raising or going away. This time thus leads to a reduction in the possible speed of the press and thus to a reduction in the performance of the entire system. The same applies to all known panel feed systems.
  • the known gripping means are formed by pliers. Above all, when operating with panels made of chromed sheet steel, there is a rapid wear of the pliers. The chrome crumbles on the edges of the board and leads to incorporations in the pincer mouths. Wear also takes place in the joints for the pliers. Since the pliers have to build small, only structurally simple bearings can be provided, which further increases the wear.
  • the invention has for its object to provide a method for operating a panel system for stamping presses and a panel system for stamping presses, which avoids any idle stroke at high press speed, allows stable guidance of the panel and allows a nearly wear-free operation.
  • first connecting means with gripping portions on a bar grasp the panel exclusively from the rear edge portion of a panel, wherein the edge portion between the rear edge and the Investigastanzenden surfaces of the last row of surfaces, based on the feed direction is located.
  • the areas to be punched out should be understood here as the last row of surfaces to be punched out, relative to the feed direction.
  • the detection of the rear edge region by means of the first connecting means can take place in various ways.
  • An embodiment of the invention provides that the connecting means detect the rear edge region by means of vacuum.
  • Another possibility according to the invention is that the connecting means detect the rear edge region electromagnetically.
  • an embodiment of the invention provides that the connecting means engage the panel by means of pointed projections which penetrate into the rear edge region of the panel when the connecting means engage the edge region. As a result, a positive connection between the connecting means and the panel is produced.
  • the projections of the first connecting means may be formed by needle-like domes which penetrate into the panel, wherein according to one embodiment of the invention, the dome may be arranged in suction openings of vacuum nozzles. At the moment when the panel is pressed against the nozzle, a spike of the nozzle completely or partially penetrates into the panel. Even with twice cold-rolled steel, the domes can support the panel of e.g. Penetrate 0.18 mm thickness.
  • the connecting means are mounted on at least one bar, which engage with the gripping portions in the gusset, which between the rear edge of the panel and the surfaces to be punched are formed.
  • the strip may have one or more suction ports connected to a vacuum source.
  • connecting means make a lifting movement to be lowered against the panel and then raised again so that the panel is advanced in the cutting plane.
  • the connecting means it is also possible to keep the connecting means constant in height and instead to lift in the transfer position the panel or the rear end of the panel to make the force or positive engagement with the first connecting means.
  • the panels in question are those which leave open spaces between the mostly round or non-rectangular shaped cuts and the rear edge. These open spaces are used in the invention for detecting and moving the panels.
  • the invention also has the advantage that a panel is not pulled around at the last punching cut, but instead the preceding panel can be withdrawn to the rear and a new panel can be easily inserted thereunder from a feed slide.
  • the method according to the invention can be used for all known sheet feed systems. It is applicable to panel systems that use a document carriage that transports the panels from an alignment station to a transfer station in which it is detected by the connecting means of the feed carriage and advanced to the punch press.
  • the invention can also be used for so-called four-axle systems in which the feed carriages bring the sheets directly from the alignment station and feed them to the punch press. In this case, two feed slides are provided, which alternately advance the detected sheets to the punch press.
  • the time required in the inventive method for receiving or taking over a board is extremely short and allows the elimination of any idle stroke, without reducing the speed of the press.
  • Another advantage of the invention is that better guidance is possible over the way the panel is detected, especially if the panel is large and thin.
  • the force can be introduced over the entire panel width and wave movements or the like can be avoided in dynamic operation. Thus, considerably larger accelerations and higher powers are possible.
  • the advantage is obtained that the stability of the residual lattice is significantly higher than in known processes by the detection of the panel according to the invention. Dimensional deviations that can occur due to the collapse of the skeleton components are avoided.
  • FIG. 1 and 2 is denoted by 10 a punching press of conventional design. It has three punching tools 12 which are moved by means of a plunger perpendicular to the plane of the drawing.
  • a feed carriage 16 is adjustable along a guide 18 in the direction of the double arrow 20.
  • the feed carriage 16 has holders 22, 24 for a gripping bar. 25 as the first connection means.
  • Carriage 16 and holder 22, 24 are actuated by suitable adjustment drives, not shown, which in turn are controlled by a suitable control device.
  • a master slide 30 (only in Fig. 1 shown) with two collets 32, 34 as the second connecting means is adjustable along a slide guide 36 in the direction of the double arrow 38.
  • the drive for the carriage 30 is also not shown. However, it is a non-positive detection by the master slide conceivable, for example, by magnetic force or vacuum.
  • the collets 32, 34 may be conventional structure, for example, have a rigid jaw 35 as a lower jaw and a movable jaw 37 as the upper jaw, wherein the movable jaw 37 is actuated by a suitable, not shown drive (see Fig. 3 ).
  • the ledge 25 is contoured such that it engages with portions in the gussets formed between the surfaces to be punched out of the respective rear row and the rear edge.
  • the bar 25 is located above the panel 40a and 40 respectively. In cross section, it is in the FIGS. 4 and 5 shown.
  • FIGS. 4 and 5 can be seen on the underside of the bar a recess 50 to which a line 52 is guided via a suitable connector 54, not shown.
  • the line 52 is connected to a vacuum source, not shown, so that the recess 50 is under negative pressure. With the help of a negative pressure, therefore, the panel 40 or 40a can be held by the bar 25.
  • a needle-like mandrel 56 is arranged. If the panel 40 or 40a held against the bar 25, the mandrel 56 penetrates into the material of the panel 40a and 40, so that the panel is also held positively. In this way, the panel 40a or 40 can be advanced in the desired manner to the press 10 with the aid of the feed carriage 16.
  • the bar 25 may include a plurality of such in the FIGS. 4 and 5 illustrated connecting means to securely grasp the panel 40a and 40 over a large width.
  • FIGS. 4 and 5 It should be noted that, in reality, the rear edge of the panel ends much closer to the tool than shown. A measure of 1 mm between edge and cut is common. After that, the fixation shown is then not in front of, but between the upper tools.
  • Fig. 2 shows a panel 40 to be processed in a position in which the last punching step is carried out.
  • the ledge 25 can be disengaged from the panel or skeleton, for example, by switching from vacuum to compressed air.
  • the feed carriage 16 returns to a transfer position, as in Fig. 1 is shown.
  • the collets 32, 34 have already detected a new panel.
  • the document carriage 30 advances the new board 40a along the longitudinal axis 20 in the direction of the punch press 10
  • the strip 25 moves due to the return movement of the feed carriage 16, the board 40a being pushed freely into the press 10.
  • the transfer position corresponds to the position in which the punching tools 12 perform the first cut.
  • the master slide 30 can easily advance the next succeeding sheet below the processed sheet as shown in FIGS FIGS. 4 and 5 results.
  • Has the board according to Fig. 4 (Table 40a) reaches the transfer position, it is raised by means of at least one lifting ram 62, which is actuated by a lifting drive, not shown in the direction of the double arrow 64, against the underside of the bar 25 so that the mandrel 56 can penetrate the panel 40a.
  • the stamp 62 extends through an opening 66 of the table top and is ceremoniesverterrorism immediately after the stroke back to the starting position.
  • Fig. 5 shows an upper tool 68 and a lower tool 70 of the punching tools 12.
  • the underside of the bar 25 corresponds exactly to the cutting plane of the tools 68, 70th
  • a lifting of the panel - at least over a partial width - can also take place by means of a lifting of the master carriage.
  • the collets 32, 34 are opened and the punch 62 lifts the board 40a against the strip 25 (FIG. Fig. 4 ), whereby the transfer from the feed carriage 30 to the feed carriage 16 takes place.
  • the feed of the panels without empty strokes of the punch press can accomplish.
  • the panels 40 and 40a are reliably detected by the bar 25 with the connecting means shown, so that deformations of the panels due to the feed movements do not occur. Due to the wide-area detection of the panels in the rear edge area, stabilization of the residual grid also takes place during the last punching step.
  • the skeleton may be removed from the ledge 25 e.g. be solved in that on the nozzles 50, a pressure surge is generated, which moves the skeleton grid down.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Punching Or Piercing (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Claims (17)

  1. Procédé d'utilisation d'un système d'alimentation de tôles destiné à des presses de poinçonnage (10), dans lequel un chariot d'alimentation (16) est déplacé entre l'outil de poinçonnage (12) de la presse de poinçonnage (10) et une position de transfert située à l'avant de la presse de poinçonnage (10), des premiers moyens de liaison du chariot d'alimentation (16) dans la position de transfert saisissant une tôle (40, 40a) dans la partie arrière, pour l'amener progressivement, en respectant la cadence de la presse de poinçonnage (10), à travers la presse de poinçonnage qui poinçonne respectivement une rangée de surfaces séparées, caractérisé en ce que les premiers moyens de liaison dotés de parties de préhension (50, 56) contre une barre (25) entrent en prise avec la tôle (40, 40a) sur toute la largeur exclusivement par le haut dans des coins de la zone d'arête arrière d'une tôle et la saisissent, la zone d'arête étant située entre l'arête arrière et les surfaces à poinçonner de chaque dernière rangée de surface, par rapport au sens d'avancement.
  2. Procédé selon la revendication 1, caractérisé en ce que le chariot d'alimentation (16) est guidé par un guidage de chariot (18), et est déplacé le long d'un premier axe (20) en direction de l'outil de poinçonnage (12) d'où il poursuit son mouvement vers une position de réception, dans lequel les premiers moyens de liaison sont de plus guidés par le chariot d'alimentation (16), et sont déplacés de préférence le long d'un second axe (21) perpendiculairement au premier axe (21), et dans lequel un chariot de présentation (30) équipé de seconds moyens de liaison détachables est déplacé le long du premier axe (20) en vue de l'alimentation d'une tôle (40, 40a) dans une position de transfert à des fins de prise en charge par les premiers moyens de liaison, une tôle (40, 40a) étant saisie, pendant un poinçonnage de la presse de poinçonnage (10), par les premiers moyens de liaison dans la position de transfert qui correspond à la position de la tôle pour le premier poinçonnage de la presse de poinçonnage (10), par le haut contre la zone d'arête arrière, et le chariot de présentation (30) amène une tôle suivante dans la position de transfert, une fois que les premiers moyens de liaison ont atteint leur position de transfert le long des deux axes (20, 21).
  3. Procédé selon la revendication 1, caractérisé en ce que deux chariots d'alimentation (16) sont guidés respectivement par un guidage de chariot (18) et déplacés le long d'un premier axe entre l'outil de poinçonnage (12), la presse de poinçonnage (10) et une position de transfert (20), dans lequel les premiers moyens de liaison sont de plus guidés par le chariot d'alimentation respectif et sont déplacés de préférence le long d'un second axe (21) perpendiculairement au premier axe (20).
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que les moyens de liaison saisissent la zone d'arête arrière par un procédé de vide.
  5. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que les moyens de liaison saisissent la zone d'arête arrière de manière électromagnétique.
  6. Procédé selon la revendication 2, caractérisé en ce que la tôle suivante respective est avancée avec les seconds moyens de liaison en dessous de la première tôle (40, 40a).
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que lors de la réception, la zone d'arête arrière de la tôle (40, 40a) est soulevée contre les moyens de liaison.
  8. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que les premiers moyens de liaison exécutent un mouvement de levage et d'abaissement pour saisir la zone d'arête arrière de la tôle (40, 40a).
  9. Procédé selon la revendication 7, caractérisé en ce que la tôle et/ou la zone d'arête arrière de la tôle (40, 40a) est soulevée avec des moyens de levage séparés contre les premiers moyens de liaison.
  10. Procédé selon l'une des revendications 1 à 9, caractérisé en ce que les premiers moyens de liaison pénètrent à l'aide de saillies pointues (56) dans la zone d'arête arrière de la tôle (40, 40a), une fois que les moyens de liaison ont saisi la zone d'arête, et saisissent la tôle (40, 40a) par complémentarité de forme.
  11. Procédé selon l'une des revendications 1 à 10, caractérisé en ce que les moyens de liaison et la tôle perforée résiduelle sont séparés les uns des autres au moyen d'un jet gazeux.
  12. Système d'alimentation de tôles destiné à des presses de poinçonnage comprenant un chariot de présentation (30), qui est logé de manière mobile entre un outil de poinçonnage (12) de la presse de poinçonnage (10) et une position de transfert située à l'avant de la presse de poinçonnage (10), des premiers moyens de liaison sur le chariot d'alimentation (16) destinés à saisir une tôle (40, 40a) dans une zone arrière, un dispositif d'entraînement pour le chariot d'alimentation (16) et un dispositif de commande pour le dispositif d'entraînement et les premiers moyens de liaison, caractérisé en ce que les premiers moyens de liaison présentent au moins une barre (25) avec des parties de préhension (50, 56) qui sont conçues et disposées de manière à entrer en prise par le haut dans des coins de la zone d'arête arrière d'une tôle (40, 40a), qui sont formés entre les surfaces à poinçonner de la tôle (40, 40a) et l'arête arrière.
  13. Système d'alimentation de tôles selon la revendication 12, caractérisé en ce que la barre (25) est raccordée à une source de vide et présente sur la face inférieure au moins un orifice d'aspiration (50).
  14. Système d'alimentation de tôles selon la revendication 12, caractérisé en ce que la barre (25) présente un ou plusieurs électroaimants destinés à saisir la tôle par le haut.
  15. Système d'alimentation de tôles selon l'une des revendications 12 à 14, caractérisé en ce que la barre (25) présente sur la face inférieure des saillies relativement pointues (56) qui pénètrent dans le matériau de la tôle ou dans un revêtement recouvrant la tôle, lorsque les moyens de liaison sont en prise avec la zone d'arête arrière.
  16. Système d'alimentation de tôles selon la revendication 15, caractérisé en ce que des poinçons en forme d'aiguilles forment les saillies (56) qui traversent la tôle.
  17. Système d'alimentation de tôles selon la revendication 16, caractérisé en ce que les poinçons sont disposés dans les orifices d'aspiration (50) de buses de vide.
EP20020796733 2002-01-26 2002-12-24 Procede d'utilisation d'un systeme d'alimentation de tôles destine a des presses de poinconnage et systeme d'alimentation destine a la mise en oeuvre de ce procede Expired - Lifetime EP1472025B9 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2002102994 DE10202994B4 (de) 2002-01-26 2002-01-26 Verfahren zum Betreiben eines Tafelanlagesystems für Stanzpressen und Verbindungsmittel zur Durchführung des Verfahrens
DE10202994 2002-01-26
PCT/EP2002/014753 WO2003061867A1 (fr) 2002-01-26 2002-12-24 Procede d'utilisation d'un systeme de plaque destine a des presses de poinçonnage et element de connexion destine a la mise en oeuvre de ce procede

Publications (3)

Publication Number Publication Date
EP1472025A1 EP1472025A1 (fr) 2004-11-03
EP1472025B1 true EP1472025B1 (fr) 2010-04-14
EP1472025B9 EP1472025B9 (fr) 2010-09-22

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EP20020796733 Expired - Lifetime EP1472025B9 (fr) 2002-01-26 2002-12-24 Procede d'utilisation d'un systeme d'alimentation de tôles destine a des presses de poinconnage et systeme d'alimentation destine a la mise en oeuvre de ce procede

Country Status (8)

Country Link
US (2) US20050139050A1 (fr)
EP (1) EP1472025B9 (fr)
JP (1) JP3906206B2 (fr)
AU (1) AU2002361216B2 (fr)
DE (2) DE10202994B4 (fr)
DK (1) DK1472025T5 (fr)
ES (1) ES2344632T3 (fr)
WO (1) WO2003061867A1 (fr)

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EP3148723B1 (fr) * 2014-05-27 2021-04-21 SACMI Cooperativa Meccanici Imola Società Cooperativa Presse à multiples poinçons
KR102415634B1 (ko) * 2021-10-27 2022-07-01 주식회사 닥터홈 3d 프린팅을 이용한 곡면패널 성형방법

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ES2344632T3 (es) 2010-09-02
AU2002361216B2 (en) 2009-01-08
DE50214374D1 (de) 2010-05-27
JP2005515075A (ja) 2005-05-26
WO2003061867A1 (fr) 2003-07-31
DK1472025T5 (da) 2010-11-08
EP1472025A1 (fr) 2004-11-03
DE10202994B4 (de) 2007-10-31
US20090031874A1 (en) 2009-02-05
WO2003061867A8 (fr) 2004-09-02
DE10202994A1 (de) 2003-08-14
US20050139050A1 (en) 2005-06-30
US7975580B2 (en) 2011-07-12
JP3906206B2 (ja) 2007-04-18
DK1472025T3 (da) 2010-08-09
EP1472025B9 (fr) 2010-09-22

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