EP2988886B1 - Train de presses de fabrication de pièces façonnées en tôle, comprenant au moins un dispositif de mesure pour vérifier les pièces produites - Google Patents

Train de presses de fabrication de pièces façonnées en tôle, comprenant au moins un dispositif de mesure pour vérifier les pièces produites Download PDF

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Publication number
EP2988886B1
EP2988886B1 EP14715300.1A EP14715300A EP2988886B1 EP 2988886 B1 EP2988886 B1 EP 2988886B1 EP 14715300 A EP14715300 A EP 14715300A EP 2988886 B1 EP2988886 B1 EP 2988886B1
Authority
EP
European Patent Office
Prior art keywords
measuring device
tool
pressing line
measuring
sheet metal
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.)
Active
Application number
EP14715300.1A
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German (de)
English (en)
Other versions
EP2988886A1 (fr
Inventor
Heribert Stöhr
Alfred Traidl
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.)
Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Publication date
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Publication of EP2988886A1 publication Critical patent/EP2988886A1/fr
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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
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/005—Multi-stage presses
    • 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
    • B21D43/025—Fault detection, e.g. misfeed detection
    • 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
    • B21D43/05—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work specially adapted for multi-stage presses

Definitions

  • the invention relates to a well-known press line with several successively arranged presses for the production of sheet metal parts, in particular body parts, with several press-operated tools connected to one another by a transfer system for the step-by-step or step-by-step production of the sheet metal parts, according to the preamble of Claim 1 specified type.
  • the invention also relates to a measuring device for checking the formed sheet metal parts produced in such a press line.
  • a production line for the production of sheet metal components which comprises a component production system and a measuring system, each sheet metal component coming from the component production system being introduced into the measuring system and measured directly in time with the production line.
  • the invention is based on the object of specifying a press line for the production of shaped sheet metal parts with which an inspection of the shaped sheet metal parts produced is possible while avoiding at least one disadvantage associated with the prior art.
  • the press line according to the invention for the production of shaped sheet metal parts which are in particular body parts (preferably also so-called large parts, such as, for example, side walls, floor assemblies, roofs and the like), comprises the features of claim 1.
  • the press line according to the invention has several tool stages arranged one behind the other, which are equipped with tools or manufacturing tools for performing forming and / or cutting operations.
  • the sheet metal workpiece transfer between the tool stages is accomplished with a transfer system (totality of all devices for the automated sheet metal workpiece transport between the tool stages), whereby it is, for example, a gripper rail transfer system, a suction bridge transfer system
  • a transfer system totality of all devices for the automated sheet metal workpiece transport between the tool stages
  • Individual feeder system or the like that is, for example, also individual robots, can act.
  • At least one measuring device for the automated geometric checking of the formed sheet metal parts is arranged or positioned at at least one unoccupied tool stage or at an intermediate station or clipboard (between two successive tool stages) at which the sheet metal workpieces quasi assume a waiting position.
  • deviations from a target geometry are to be recorded on this measuring device.
  • cutouts and holes in the shaped sheet metal parts can also be checked (for example with regard to geometry and position).
  • individual workpiece or shaped sheet metal parts areas that contain, for example, design elements can also be checked in a targeted manner.
  • the measuring device has at least one measuring station for a shaped sheet metal part. However, it can also be provided that the measuring device has several measuring stations at which several shaped sheet metal parts (for example a right and a left vehicle door) can be measured simultaneously or in parallel.
  • the measuring device is preferably arranged at the last tool stage (with respect to the workpiece passage direction) so that no further forming and / or cutting operations are subsequently carried out on the shaped sheet metal parts.
  • the measuring device can also be arranged at a preceding tool stage or intermediate station, provided that the forming and / or cutting operations to be carried out in the subsequent tool stages have no significant influence on geometrically relevant shaped sheet metal parts.
  • the insertion of the shaped sheet metal parts into the measuring device and in particular the removal of the shaped sheet metal parts from the measuring device, which happens in particular alternating with at least one other shaped sheet metal part to be checked, can be done fully automatically with the transfer system belonging to the production line.
  • the inventive integration of the measuring device in the press line is space-neutral, which is significant due to the limited space available in many press shops and the limited possibilities for reconstruction measures Represents advantage.
  • the measuring device In the case of the DE 10 2011 001 852 A1 known production line, there is an additional space requirement for the measuring system in the outlet area of the component production plant.
  • the measuring device In the case of a production changeover, the measuring device can be exchanged together with the tools during the tool change or moved to another location.
  • the invention enables an inline check of all formed sheet metal parts produced (ie 100% check), in particular also with short cycle times (e.g.
  • the recorded geometry values can be used for the individual classification of the shaped sheet metal parts in real time (e.g. good part, reworking part, reject part) and / or for adapting process parameters (which is preferably computer-based).
  • the transfer system that is already present can be used essentially without restrictions, as explained above. This is not an exhaustive list of the advantages associated with the invention.
  • the press line according to the invention has several presses linked to the transfer system.
  • the measuring device is designed like a tool and is arranged in one of the presses, in particular in the last press (with regard to the workpiece passage direction).
  • the measuring device is thus integrated into a press.
  • a tool-like design of the measuring device is understood to mean in particular that its structure is modeled on a forming and / or cutting tool or at least the lower tool part (or lower tool part) of such a forming and / or cutting tool, so that the measuring device can Handling when setting up, especially when installing in the press and during expansion, has a tool-like character and can therefore be handled in the same way as the production tools belonging to the production line.
  • a transfer press is, for example, in the DE 196 51 934 A1 described.
  • a tool-like measuring device is formed from a lower tool part, this lower tool part having at least one measuring station with a sheet metal part tray (or workpiece or component tray). Such a measuring device can also be referred to as a measuring tray or measuring tray device. All measuring device components are accommodated in this lower tool part or built on a tool base plate. The number and arrangement of measuring points can largely be based on the requirements without any restrictions (ie any measuring point distribution is possible). It is therefore not necessary to fasten measuring device components to the press ram, ie the press ram remains free.
  • the shaped sheet metal part tray can be designed with guide aids or directors or the like for aligning and centering a deposited sheet metal part.
  • guide aids are known from the prior art for use in forming and / or cutting tools.
  • the geometrical check of the sheet metal part can immediately take place (regardless of the position of the press ram).
  • the actual measuring time is significantly less than the cycle time of the production line and is z.
  • several measuring sensors such as displacement sensors and distance sensors in particular, are preferably arranged in the measuring device, which can carry out punctual, linear or flat measurements on the shaped sheet metal part, in particular on its underside.
  • the measuring device has at least one tactile measuring sensor, which is designed with a resiliently mounted measuring probe pin (so-called measuring probe), and in particular several or a plurality of such tactile measuring sensors, which against reference points on the underside of the deposited sheet metal part can or can measure.
  • a tactile measuring sensor which is designed with a resiliently mounted measuring probe pin (so-called measuring probe), and in particular several or a plurality of such tactile measuring sensors, which against reference points on the underside of the deposited sheet metal part can or can measure.
  • the measuring device has at least one contactless measuring sensor, such as in particular an optical measuring sensor, and in particular several or a plurality of such contactless measuring sensors, which against reference points, reference lines and / or reference surfaces on the underside of the deposited sheet metal part can or can measure.
  • contactless measuring sensor such as in particular an optical measuring sensor, and in particular several or a plurality of such contactless measuring sensors, which against reference points, reference lines and / or reference surfaces on the underside of the deposited sheet metal part can or can measure.
  • Different optical sensors such as, in particular, laser sensors (point measurement) or laser scanners (line or area measurement) with different detection principles are known from the prior art.
  • the measuring device according to the invention can have several differently designed measuring sensors (that is to say for example also tactile and contactless measuring sensors), which in particular can also be operated redundantly.
  • the measuring device is designed for the geometric checking of different and in particular similar shaped sheet metal parts. This can be achieved, for example, by changing the number, arrangement and alignment of measuring sensors and / or adapting the sheet metal part tray, for example by means of adjustable component holders.
  • Fig. 1 shows a production line 100 designed as a press line for the continuous production of shaped sheet metal parts.
  • the molded sheet metal parts produced are in particular body components for a motor vehicle.
  • the press line 100 comprises a plurality of presses 120 to 170 arranged one after the other.
  • Each press 120 to 170 forms a tool stage, for which the presses 120 to 160 are each equipped with a production tool, not shown, with which successive forming and / or cutting operations are performed in time with the production line continuous production of the sheet metal parts are executable.
  • the presses 120 to 170 or the tools built into them are linked to one another by a transfer system 110 for the cyclical transport of parts or workpieces. The direction of passage of the workpieces, as shown from right to left, is illustrated with the arrow DR.
  • the production line 100 has a measuring device 200 with which the geometry of the formed sheet metal parts produced can be checked in time with the production line 100.
  • the measuring device 200 is arranged in the last press 170 instead of a production tool, so that each sheet metal part produced can be inserted into the measuring device 200 with the transfer system 110 at the rate of the production line 100 and removed again after the cyclical check.
  • the tool-like measuring device 200 is arranged on a press changing table 175.
  • the formed and checked sheet metal parts are discharged in the direction of passage DR, ie to the left as shown.
  • the removal of the formed sheet metal parts from the last press 170 can also take place by a removal robot or the like, wherein this removal robot can be part of the transfer system.
  • Fig. 2 the tool-like structure of the measuring device 200 is illustrated, the measuring device 200 shown having, for example, only a single measuring station.
  • the tool-like measuring device 200 is constructed based on a forming and / or cutting tool only from a lower tool part, which comprises a base plate 210 with a frame structure or a frame structure 221/222.
  • a plurality of adjustable component or workpiece holders 230 are arranged on the frame 221/222, which in their entirety form a sheet metal workpiece holder or sheet metal part tray adapted to the sheet metal parts 300 to be checked.
  • Reference aids or instructors designed as insertion bevels for the sheet metal parts 300 to be checked or measured are designated by 240, so that these always come to rest in the same predetermined position or orientation and centering on the sheet metal part tray. Due to its structure, the measuring device 200 can also be referred to as a measuring tool.
  • the measuring device 200 has several measuring sensors 251 to 255, embodied as measuring probes, which measure against defined reference points on the underside of a deposited sheet metal part 300 and can thereby record relevant geometric data of the sheet metal part 300, the values registered by the measuring probes 251 to 255 for evaluation and Further processing are transmitted to a computer device, not shown.
  • the geometrical check of the deposited sheet metal part 300 can take place immediately after it has been deposited in the measuring device 200.
  • non-contact measuring sensors such as laser sensors or laser scanners, can also be provided, as explained above.
  • Changes and deviations from the target geometry can still be recorded within the production line or press line 100 in real time, with all of the sheet metal parts 300 produced being able to be checked in time with the production line 100.
  • a timely statement on the sheet metal part geometry as part of an inline inspection is thus possible, so that in the event of impermissible tolerance deviations (or non-compliance with specified manufacturing tolerances) and / or errors, the manufacturing process can be intervened immediately.
  • even the smallest successive changes can be recorded and documented so that a response can also be made to this.
  • component-specific documentation of the check can be carried out.
  • the review of all formed sheet metal parts produced also enables further evaluations, such as a correlation analysis between recorded geometric values and press and material parameters. Furthermore, statistical evaluations are made possible, which are not possible on the basis of random samples carried out to date.
  • the measuring device 200 is designed as a storage device or storage station (or measurement storage) without active movement and / or control devices.
  • the sheet metal parts or bodywork components 300 to be checked are deposited and removed with the aid of the transfer system 110 belonging to the production line 100.
  • the removal can also be carried out by a removal robot or the like, this removal robot being part of the transfer system.
  • Production line for the production of sheet metal parts with at least one measuring device for checking the sheet metal parts produced

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Press Drives And Press Lines (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (7)

  1. Train de presses (100) comprenant plusieurs presses (120-170) disposées les unes après les autres pour la fabrication en continu de composants de carrosserie (300), comprenant :
    - plusieurs outils liés aux presses, qui sont incorporés dans les presses (120-160) et dans lesquels peuvent être exécutées des opérations de façonnage et/ou de découpe successives, selon le cycle du train de presses (100), en vue de fabriquer les composants de carrosserie (300) ;
    - un système de transfert (110) reliant les presses (120-170) en chaîne pour le transport de pièces entre les outils incorporés dans les presses (120-160) ; et
    - au moins un dispositif de mesure (200) au niveau duquel la géométrie des composants de carrosserie (300) fabriqués peut être contrôlée selon le cycle du train de presses (100) ;
    caractérisé en ce que
    le dispositif de mesure (200) est réalisé à la manière d'un outil et se compose uniquement d'une partie d'outil inférieure d'une presse dans le train de presses, de sorte que tous les éléments constitutifs du dispositif de mesure (200) sont montés sur une plaque de base d'outil (210) et le dispositif de mesure (200) est disposé au sein du train de presses (100) dans l'une des presses (170) à un emplacement d'outil de presse libre, de sorte que chaque composant de carrosserie (300) fabriqué peut être introduit dans le dispositif de mesure (200), selon le cycle du train de presses (100), avec le système de transfert (110) faisant partie du train de presses (100) et peut de nouveau en être retiré après le contrôle cyclique.
  2. Train de presses (100) selon la revendication 1, caractérisé en ce que la partie d'outil inférieure qui forme le dispositif de mesure (200) de type outil présente au moins un emplacement de mesure doté d'une zone de dépose de composant.
  3. Train de presses (100) selon la revendication 2, caractérisé en ce que le dispositif de mesure (200) de type outil est réalisé avec des éléments de guidage (240) destinés à orienter et à centrer un composant de carrosserie (300) déposé.
  4. Train de presses (100) selon l'une des revendications précédentes, caractérisé en ce que le dispositif de mesure (200) de type outil comporte plusieurs capteurs de mesure tactiles (251-255), qui sont respectivement réalisés avec une broche de palpage de mesure montée sur ressort, lesquels peuvent effectuer une mesure par rapport à des points de référence d'un composant de carrosserie (300) déposé.
  5. Train de presses (100) selon l'une des revendications précédentes, caractérisé en ce que le dispositif de mesure (200) de type outil possède au moins un capteur de mesure sans contact et de préférence plusieurs capteurs de mesure sans contact.
  6. Train de presses (100) selon l'une des revendications précédentes, caractérisé en ce que le dispositif de mesure (200) de type outil est réalisé pour le contrôle géométrique de différents composants de carrosserie (300).
  7. Dispositif de mesure (200) destiné à être utilisé dans un train de presses (100) selon l'une des revendications précédentes, avec lequel la géométrie des composants de carrosserie (300) fabriqués peut être contrôlée selon le cycle du train de presses (100), le dispositif de mesure (200) étant réalisé à la manière d'un outil et se composant uniquement d'une partie d'outil inférieure d'une presse dans le train de presses, de sorte que tous les éléments constitutifs du dispositif de mesure (200) sont montés sur une plaque de base d'outil (210), de sorte que le dispositif de mesure (200), lors de l'installation dans une presse (170) et du démontage, peut être manipulé de la même manière que les outils faisant partie du train de presses (100).
EP14715300.1A 2013-04-23 2014-04-04 Train de presses de fabrication de pièces façonnées en tôle, comprenant au moins un dispositif de mesure pour vérifier les pièces produites Active EP2988886B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013207309.7A DE102013207309A1 (de) 2013-04-23 2013-04-23 Fertigungslinie zur Herstellung von Blechformteilen mit wenigstens einer Messvorrichtung zur Überprüfung der hergestellten Blechformteile
PCT/EP2014/056796 WO2014173658A1 (fr) 2013-04-23 2014-04-04 Chaîne de fabrication de pièces façonnées en tôle, comprenant au moins un dispositif de mesure pour vérifier les pièces produites

Publications (2)

Publication Number Publication Date
EP2988886A1 EP2988886A1 (fr) 2016-03-02
EP2988886B1 true EP2988886B1 (fr) 2020-09-23

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EP14715300.1A Active EP2988886B1 (fr) 2013-04-23 2014-04-04 Train de presses de fabrication de pièces façonnées en tôle, comprenant au moins un dispositif de mesure pour vérifier les pièces produites

Country Status (4)

Country Link
EP (1) EP2988886B1 (fr)
CN (1) CN105050744B (fr)
DE (1) DE102013207309A1 (fr)
WO (1) WO2014173658A1 (fr)

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DE102014006683A1 (de) 2014-05-08 2015-11-12 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Fertigungsstraße für die Bearbeitung mindestens eines Flächenbauteils und Verfahren zur Bearbeitung des mindestens einen Flächenbauteils in der Fertigungsstraße
DE102015107574B4 (de) * 2015-05-13 2024-09-26 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren und Vorrichtung zur kontinuierlichen Fertigung bzw. Montage
DE102016108164A1 (de) 2016-05-03 2017-11-09 Bayerische Motoren Werke Aktiengesellschaft Vorrichtung und Verfahren zum Bestimmen einer Abweichung einer Form eines geformten Bauteils von einer Formvorgabe
DE102018202373A1 (de) * 2018-02-16 2019-08-22 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Ermitteln von Daten zum Vergleichen von Bauteilen
DE102018213650A1 (de) * 2018-08-14 2020-02-20 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Überprüfen eines Umformprozesses zum Herstellen eines Kraftfahrzeugbauteils
CN111069917A (zh) * 2019-12-12 2020-04-28 中海机器人科技(广州)有限公司 一种高效率冲压生产线
DE102021100842A1 (de) * 2021-01-18 2022-07-21 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Herstellen einer Vorrichtung zum Bewegen eines Werkstücks aus einem ersten Werkzeug in ein zweites Werkzeug, elektronische Recheneinrichtung, Computerprogrammprodukt sowie computerlesbares Medium
DE102021002777A1 (de) * 2021-05-28 2022-12-01 ALLGAlER WERKE GmbH Verfahren und Vorrichtung zum Einsatz bei der Fertigung von tiefgezogenen Blechformteilen

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Also Published As

Publication number Publication date
WO2014173658A1 (fr) 2014-10-30
CN105050744B (zh) 2019-05-03
EP2988886A1 (fr) 2016-03-02
CN105050744A (zh) 2015-11-11
DE102013207309A1 (de) 2014-10-23

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