EP3790678A1 - Procédé mettant en ?uvre une installation de production permettant le formage d'une tôle - Google Patents

Procédé mettant en ?uvre une installation de production permettant le formage d'une tôle

Info

Publication number
EP3790678A1
EP3790678A1 EP19731869.4A EP19731869A EP3790678A1 EP 3790678 A1 EP3790678 A1 EP 3790678A1 EP 19731869 A EP19731869 A EP 19731869A EP 3790678 A1 EP3790678 A1 EP 3790678A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
stops
program
manufacturing
image recognition
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
EP19731869.4A
Other languages
German (de)
English (en)
Other versions
EP3790678B1 (fr
Inventor
Thomas JUNGMAYR
Rudolf KUBINGER
Johann Mayrhofer
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.)
Trumpf Maschinen Austria GmbH and Co KG
Original Assignee
Trumpf Maschinen Austria 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 Trumpf Maschinen Austria GmbH and Co KG filed Critical Trumpf Maschinen Austria GmbH and Co KG
Publication of EP3790678A1 publication Critical patent/EP3790678A1/fr
Application granted granted Critical
Publication of EP3790678B1 publication Critical patent/EP3790678B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B21D5/002—Positioning devices
    • 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
    • B21D43/003—Positioning devices
    • 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
    • B21D43/26—Stops
    • 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
    • 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
    • B21D55/00—Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass

Definitions

  • the invention relates to a method for operating a manufacturing device for Umfor men of workpieces made of sheet metal according to the features of the preamble of Anspru Ches first
  • Manufacturing equipment for forming workpieces made of sheet metal also called Biegemaschi nen for bending or bending or bending presses referred to as press brakes, have two parallel aligned pressing bars on which bending tools are arranged.
  • the press beams are usually equipped with a plurality of paired bending tools. A positioned between these bending tools workpiece is formed by their Gegenend2009 or their press against each other, wherein an edge is generated in the workpiece.
  • Corresponding bending tools - lower tool and upper tool - are also referred to as female and male.
  • Each individual such manufacturing steps for carrying out a Biegeumfor determination comprises several phases or individual measures. These include: bringing the attacks into the starting position; Place the workpiece on the lower tool and attach it to stops; Press upper tool against workpiece and lower tool; Drive up the upper tool; Remove workpiece. To carry out a further manufacturing step, the stops are repositioned and the said phases are repeated accordingly.
  • the object of the present invention is to provide an improved method for operating egg ner manufacturing device or a workpiece processing machine, by which simplifies the operation and with the higher security can be achieved.
  • the object is achieved by a method for producing a component, by Umfor determination of a workpiece made of sheet metal and the use of a manufacturing facility such as a press brake with two parallel aligned pressing beams, attach to the pressing beam bending tools and with a control device with a production program for semi-automatic operation of the manufacturing device, wherein at least two production steps are carried out, each with a bending deformation.
  • a manufacturing facility such as a press brake with two parallel aligned pressing beams
  • Positioning stops for aligning the workpiece in a machining area Inserting the workpiece into the processing area by placing it on a lower tool and applying or placing the workpiece on the stops by an operator; Performing the bending deformation by pressing or pressing an upper tool against the workpiece and the lower tool by moving the pressing bars against each other; Moving the press beams apart;
  • the execution of a subsequent second manufacturing step of the manufacturing program is started after a first manufacturing step, which is detected by at least one camera, the processing area and by an image recognition program, the Fage and direction of the workpiece from the images obtained from the camera is determined and ba Based on the determined by the image recognition program Fage and the orientation of the workpiece, by the manufacturing program of the subsequent, second manufacturing step is started ge.
  • the procedure in which the second manufacturing step following the first manufacturing step is not started until it has been determined by the image recognition program, that the workpiece has been completely removed from the observation area, has the advantage of a particularly high reliability.
  • Another advantage is the procedure, wherein in a third production s step first, the insertion of the workpiece in the processing area is performed by the operator and only then the attacks are positioned by the controller, wherein the Biegeum formation is started by the control device when of the Image recognition program has been determined that the positioning of the stops is complete.
  • Fig. 1 is a bending press as an embodiment of a manufacturing device
  • FIG. 2 shows a cross section of the bending press according to FIG.
  • FIG. 3 is a time chart of a production program for producing a component on the bending press;
  • FIG. 4 shows a detail of the bending press with the workpiece in a fourth production step of the production program;
  • FIG. 4 shows a detail of the bending press with the workpiece in a fourth production step of the production program;
  • Fig. 5 is a timing chart of a second operation of the bending press
  • Fig. 6 is a timing chart of a third operation of the bending press
  • Fig. 7 is a timing chart of a fourth operation of the bending press
  • Fig. 8 shows a detail of the bending press with the workpiece in a manufacturing step of the Be operating way of FIG. 7th
  • Fig. 1 shows a bending press 1 as an embodiment of a manufacturing device or a workpiece processing machine.
  • the bending press 1 has in a known manner a lower pressing beam 2 and an upper pressing bar 3.
  • the two pressing bars 2, 3 are held by a machine frame 4, wherein the lower pressing beam 2 fixed, that is fixedly attached to the machine frame 4.
  • the lower, fixed pressing beam 2 is therefore often referred to as a table bar.
  • the upper press beam 3 is adjustably guided on the machine frame 4 in the vertical direction (Z direction). With the help of a suitable motor drive, for example by means of hydraulic cylinders (not shown), the upper beam 3 can be lowered to the lower beam 2 down who the.
  • a lower bending tool 6 (a die) and an upper bending tool 7 (a male) are attached in pairs to the two pressing bars 2, 3 in pairs.
  • a bending deformation takes place on the workpiece 5 then by moving against each other of the two pressing bars 2, 3, wherein the upper bending tool 7 (in short: “upper tool”) against the workpiece 5 and the lower bending tool 6 (abbreviated to "lower tool”) is pressed until the desired extent of deformation of the workpiece 5 is reached.
  • the bending press 1 also includes one or more stops 8, 9, on which edges or sides of the work piece. 5 can be created and thus aligned.
  • the stops 8, 9 are commonly referred to as "back stops", since from the perspective of one of the bending press 1 are the operator behind the press bars 2, 3 are arranged. After appropriate Po tion of the stops 8, 9 relative to the bending tools 6, 7, a bending or edging on the workpiece 5 by an operator can be very easily and yet produced with great accuracy.
  • the bending press 1 To operate the bending press 1, this is with a control device 10 and with a loading terminal 11 is formed. On a screen 12 of the control terminal 11, the operating conditions of the bending press 1 of an operator can be displayed and it is the Bedi Enperson thus possible to prepare over an input device 13 with the bending press 1 physically shield ing manufacturing steps.
  • This preparation of a new manufacturing step for example, in a repositioning of the stops 8, 9 exist.
  • the stops 8, 9 are motorized adjustable and can cause the operator, for example by direct input of the new coordinates, the repositioning of the stops 8, 9.
  • the operator can call the production program 14 on the operating terminal 11 and bring it to the display.
  • the corresponding production steps can be selected and the setting of the new operating state of the bending press 1 can be started.
  • the work piece 5 that is placing the workpiece 5 on the lower tool 6 and applying or placing on stop surfaces of the stops 8, 9, then the bending deformation by ge move against each other of the press bars 2, 3 are started.
  • Biegepres sen to the operator is a separate, educated example by a footswitch Switch available. By operating the switch, the up and down movement of the upper press bar 3 can be started.
  • the control device 10 is also formed with an image recognition program 15.
  • the image recognition program 15 is suitable for analyzing images recorded by a processing area 16 in the vicinity of the bending tools 6, 7 or of the workpiece 5 and, with the aid of automatic pattern recognition, the instantaneous processing state of the workpiece 5 or the instantaneous phase of the production currently being carried out step.
  • images of the processing area 16 recorded by the camera 17 are analyzed by the image recognition program 15 and the operating states detected by the image recognition program 15 are used in the phases of the production steps to control the course of the production program 14 itself.
  • FIG. 2 shows a cross section of the bending press 1 according to FIG. 1.
  • a second camera 18 (left of the press bar 3) is arranged according to this embodiment, also behind the upper press bar 3.
  • An optical axis 19 of the camera 17 and an optical axis 20 of the camera 18 are directed obliquely from above onto the processing area 16 or the workpiece 5 in the processing area 16.
  • Each of the two stops 8, 9 is attached to a stop device 21 and can be adjusted with their help in the three spatial directions X, Y, Z and thus repositioned.
  • the stop device 21 has for this purpose in the X, Y and Z direction directed guideways 22 and thus interacting servomotors 23.
  • FIG. 2 By the illustration in Fig. 2 are simultaneously two different times of two successive phases of a first manufacturing step Fl of the manufacture of a construction part of the workpiece 5 shown.
  • the Fage of the undeformed workpiece 5 - shown in solid Finien - corresponds to the end of the phase "insertion of the workpiece 5 in the processing area 16 and applying to the stops 8, 9".
  • the Fage of the workpiece 5 in the bent state - shown in dashed Finien - corresponds to the end of the Biegeum formation or the end of the phase "upper tool 7 against workpiece 5 and lower tool 6 press".
  • FIG. 3 shows a schematic representation of the time course of two or more ren consecutive manufacturing steps Fl, F2, etc. of a production program 14 for producing a complex component of the workpiece 5.
  • Each of these manufacturing steps Fl, F2 comprises the phases:
  • the timing of the start of this phase B 1 thus also depends entirely on the conditions of the conditions of the operator, with whom this puts the workpiece 5 in the processing area 16, from. This point in time is just the end of phase II to which the Schmkennungspro program 15 determines that the workpiece 5 has been completely brought to the lower bending tool 6 and the stops 8, 9 to the plant. In an analogous manner, it is with the removal of the workpiece 5 by the operator in the phase Rl. As well as the duration of phase II, the duration and end of the phase R1 depends on the movements of the operator. This indeterminacy of the duration of the phases II, Rl and the phases 12 and R2 of the subsequent manufacturing step F2 is therefore shown in Fig. 3 by a ge jagged course of the lateral lines of these phases.
  • FIG. 4 shows the workpiece 5 in the processing region 16 of the bending press 1 during the fourth production step F4.
  • the shape of the workpiece 5 and the instantaneous position of the bending tools 6, 7 corresponds to the end of the phase B4, ie, on the workpiece 5, the fourth bending deformation is completed, according to the notation used above.
  • the phases 04 and R4 are now to be executed.
  • FIG. 4 illustrates a production program 14 having at least four production steps F1, F2, F3 and F4. According to the embodiment of the method as shown in Fig.
  • the second manufacturing step F2 or its first phase P2 of the repositioning of the stops 8, 9 is only started when the workpiece 5 in the phase Rl completely has been moved out of the processing area 16. That is, when the Jardinkennungspro program 15 has determined that the workpiece 5 has been completely removed from the lower tool 6 and from the processing area 16, the production program 14 is further switched to the phase P2 by the control device 10.
  • phase P2 of the repositioning of the stops 8, 9 of the second manufacturing step F2 before Beendi tion of the phase Rl of the removal of the workpiece 5 from the processing area 16 ge starts.
  • the production program 14 a value of a minimum distance between tween the workpiece 5 and the stops 8, 9 set in the X direction.
  • this monitoring of the distance triggered starting of the phase P2 is shown graphically by an overlap of the phases Rl and P2 or by an overlap of the phases R2 and P3.
  • FIG. 6 shows a timing diagram of a third embodiment of the operation of the bending press 1.
  • a value oftownab stood between the workpiece 5 and the stops 8, 9 given and monitoring takes place through evaluation of the images of the cameras 17, 18 by means of thessenkennungspro program 15.
  • a continuous monitoring of the Ab between the workpiece 5 and the stops 8, 9 is carried out, so that the BEWE movement or the speed of movement of the stops 8, 9 to that of the Work piece 5 - almost in real time - can be coupled.
  • the movement of the stops 8, 9 also starts here, only when the distance exceeds the value of the predetermined minimum distance. But it is also also also provided that the speed of movement of the proposals to 8, 9 is only so great that the predetermined minimum distance is not fallen below again becomes.
  • the movement of the stops 8, 9 takes place quasi at a safe distance from the workpiece 5 moved by the operator. Accordingly, the duration of the repositioning of the stops 8, 9 in the phase P2, as well as the phase R1, can be dependent on the movements of the operator (indicated by a jagged profile of the lateral lines of the phases Rl and P2).
  • the Vietnamesespro program 14 contains a second manufacturing step F2 with a so-called "Z-bend" of the work piece 5.
  • the workpiece. 5 first on the lower bending tool 6 hang up (corresponds to phase 13) and the stops 8, 9 can be moved only then to the lower bending tool 6 and the workpiece 5 (corresponding to phase P3).
  • the start of the subsequent bending deformation in phase B3 is triggered in this case by the control device 10 when it has been determined by the image recognition program 15 that the repositioning of the stops 8, 9 and thus the phase P3 is completed submit.
  • the operation of the bending press 1 can also combinations of the above operations with the use of elements monitored by Sensorele attacks 8, 9 may be provided.
  • the stops 8, 9 example, equipped with force measuring elements or contact switches.
  • a continuous monitoring of the measuring signals of such sensor elements by the control device 10 makes it possible to automatically initiate a countermeasure in the event of a collision with incorrectly positioned machine parts, but above all in the event of a collision or the pinching of a body part of an operator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

L'invention concerne un procédé destiné à la fabrication d'un élément structural par formage d'une pièce (5) en tôle, comportant une installation de production (1) ayant des outils de cintrage (6, 7) fixés sur des poutres de presse (2, 3), et un dispositif de commande (10) ayant un programme de production (14) destiné au fonctionnement semi-automatisé de l'installation de production (1), au moins deux étapes de production (F1, F2) avec respectivement un formage par cintrage étant mises en œuvre, et une étape de production (F1, F2) comprenant : le positionnement de butées (8, 9) destinées à orienter la pièce (5) ; le placement de la pièce (5) dans la zone de traitement (16) par un opérateur ; la mise en œuvre du formage par cintrage ; la séparation des poutres de presse (2, 3) et le retrait de la pièce (5) par l'opérateur. Après une première étape de production (F1), l'exécution d'une seconde étape de production subséquente (F2) du programme de production (14) est lancée, par capture de la zone de traitement (16) par une caméra (17, 18), et par détermination de la position et de l'orientation de la pièce (5) par un programme de reconnaissance d'image (15) et, sur la base de la position de la pièce (5) déterminée par le programme de reconnaissance d'image (15), la seconde étape de production subséquente (F2) est lancée par le programme de production (14).
EP19731869.4A 2018-05-07 2019-05-06 Procédé mettant en oeuvre une installation de production permettant le formage d'une tôle Active EP3790678B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50378/2018A AT520649B1 (de) 2018-05-07 2018-05-07 Verfahren mit einer Fertigungseinrichtung zum Umformen von Blech
PCT/AT2019/060151 WO2019213680A1 (fr) 2018-05-07 2019-05-06 Procédé mettant en œuvre une installation de production permettant le formage d'une tôle

Publications (2)

Publication Number Publication Date
EP3790678A1 true EP3790678A1 (fr) 2021-03-17
EP3790678B1 EP3790678B1 (fr) 2022-03-16

Family

ID=66793552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19731869.4A Active EP3790678B1 (fr) 2018-05-07 2019-05-06 Procédé mettant en oeuvre une installation de production permettant le formage d'une tôle

Country Status (4)

Country Link
EP (1) EP3790678B1 (fr)
CN (1) CN112088053B (fr)
AT (1) AT520649B1 (fr)
WO (1) WO2019213680A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117340101B (zh) * 2023-12-04 2024-03-08 江苏信成电器总厂 一种钣金冲压加工用的油压机

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6644080B2 (en) * 2001-01-12 2003-11-11 Finn-Power International, Inc. Press brake worksheet positioning system
EP1503874B1 (fr) * 2002-05-13 2006-04-26 Trumpf Maschinen Austria GmbH & CO. KG. Equipement de fabrication avec une presse a plier et mode de fonctionnement de cet equipement de fabrication
JP2006061959A (ja) * 2004-08-27 2006-03-09 Komatsu Sanki Kk プレスブレーキ
DE202008017912U1 (de) * 2007-04-30 2010-10-28 Trumpf Maschinen Austria Gmbh & Co Kg Biegemaschine mit Ausnehmung für Fußraum
AT510689B1 (de) * 2011-03-07 2012-06-15 Trumpf Maschinen Austria Gmbh Verfahren zum positionieren eines werkstücks an einer abkantpresse
PL2590040T3 (pl) * 2011-11-04 2014-08-29 Nivora Ip B V Sposób i urządzenie do wspomagania w ręcznym manipulowaniu obrabianym przedmiotem podczas obróbki maszynowej
JP5856860B2 (ja) * 2012-02-03 2016-02-10 株式会社アマダホールディングス 板状ワーク加工装置及びワークの位置決め支援方法
US9448650B2 (en) * 2012-11-09 2016-09-20 Wilson Tool International Inc. Display device for punching or pressing machines
JP6054156B2 (ja) * 2012-11-30 2016-12-27 株式会社日立製作所 曲げ加工装置における加工部品取付位置指示システム
AT516260B1 (de) * 2014-12-17 2016-04-15 Trumpf Maschinen Austria Gmbh Biegewerkzeug mit einer Längsversatz-Messvorrichtung
CN205309019U (zh) * 2016-01-12 2016-06-15 东莞市谊科数控科技有限公司 一种基于视觉识别控制的折弯机
CN106180299A (zh) * 2016-08-30 2016-12-07 宁波市鄞州新华仪表电机配件厂 折板机
CN106393066A (zh) * 2016-10-19 2017-02-15 上海发那科机器人有限公司 一种使用机器人实现折弯跟踪的方法

Also Published As

Publication number Publication date
AT520649A4 (de) 2019-06-15
CN112088053B (zh) 2022-08-12
AT520649B1 (de) 2019-06-15
WO2019213680A1 (fr) 2019-11-14
EP3790678B1 (fr) 2022-03-16
CN112088053A (zh) 2020-12-15

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