EP0166351A2 - Dispositif pour une machine de travail de déformation des tôles - Google Patents

Dispositif pour une machine de travail de déformation des tôles Download PDF

Info

Publication number
EP0166351A2
EP0166351A2 EP85107474A EP85107474A EP0166351A2 EP 0166351 A2 EP0166351 A2 EP 0166351A2 EP 85107474 A EP85107474 A EP 85107474A EP 85107474 A EP85107474 A EP 85107474A EP 0166351 A2 EP0166351 A2 EP 0166351A2
Authority
EP
European Patent Office
Prior art keywords
tool
bending
sheet
springback
amount
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Withdrawn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
EP85107474A
Other languages
German (de)
English (en)
Other versions
EP0166351A3 (fr
Inventor
Arnold Stucki
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0166351A2 publication Critical patent/EP0166351A2/fr
Publication of EP0166351A3 publication Critical patent/EP0166351A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • B21D5/006—Bending sheet metal along straight lines, e.g. to form simple curves combined with measuring of bends
    • 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

Definitions

  • the invention relates to a device on a machine for forming work on sheet-like materials with springback properties, a tool movable by the machine forming the sheet-like material.
  • the bending or edging of sheet metal belonging to the forming manufacturing process is used for the production of semi-finished products or end products such as housings, molded parts, joining parts, rods, etc.
  • forming machines e.g. bending presses and folding machines
  • NC controls you need mathematically formulated information about the elastic-plastic deformation behavior of the workpiece material, in particular about the springback.
  • the actual geometry of the formed workpiece deviates from the target geometry. This particularly relates to the bending angle, which is adversely affected by the springback.
  • the desired and set bending angle of the workpiece is changed by the springback angle.
  • the change in the bending angle is uncontrolled and cannot be recorded statistically.
  • the exact amount of the springback angle can practically not be predicted, since it depends on many factors, such as material properties (high-strength thin sheets made of micro-alloyed and phosphorus alloyed steel alloys, coated sheets, modulus of elasticity), rolling direction of the sheet, sheet thickness, average bending radius, Tool radius, amount of the desired bending angle, bending process (free bending in the die, swivel bending, pressure bending).
  • the object of the invention is to eliminate the disadvantages of the known NC-controlled forming processes.
  • the deviation of the actual value of the bending angle from its target value should be eliminated.
  • the reproducibility of this zero deviation should also be guaranteed under different conditions, such as different material properties, rolling direction of the sheet, sheet thickness, average bending radius, tool radius, amount of the desired bending angle, bending process (free bending in the die, die bending, swivel bending).
  • the manufacturing effort should be reduced to a minimum.
  • great flexibility of the forming machine and economical production in particular Small batch sizes are achieved when different material qualities and sheet thicknesses can be processed side by side with the lowest possible tool investments.
  • FIG. 1 shows a sectional view of a bending rail 1 that bends a sheet 2 in the die or in the die 3 using the free bending method and the die bending method.
  • the bending rail is either only a part or up to the lower point in the die. moved into the die 3.
  • the length of the bending section X depends on the desired bending angle. of the sheet metal 2.
  • the relative movement of the bending rail 1 and the die 3 is accomplished by an electrical, hydraulic or pneumatic drive mechanism and moved into the desired position with the desired force.
  • the relative movement can be carried out by moving the bending rail 1 or the die or the die 3. Since the geometry data of the die or die 3 and the bending rail 1 are known, only the specification of the distance X is sufficient to achieve the desired bending angle.
  • the bending distance X indicates how deep the bending rail 1 has to go into the die 3 or die in order to reach the TARGET bending angle ⁇ of the sheet 2. If the bending rail 1 retracts and the sheet is relieved, the sheet springs back by the distance ⁇ x and thereby changes the bending angle as a result of the springback property 4m of the sheet, which - as already mentioned - depends on a larger number of factors.
  • the spring-back angle ⁇ which is designated in the literature and which is drawn in FIG. 2, changes the TARGET bending angle ⁇ in an uncontrolled manner. In order to reduce the bending error caused by the springback angle, the bending rail 1 has been moved several times in the direction of the sheet metal 2 with the distance X + ⁇ X increasing.
  • Figure 1 also shows a hold-down device 4, which is slidably mounted on the bending rail 1 and e.g. is moved by spring balancing or a special drive (pneumatic, electromagnetic, electric motor, etc.).
  • This hold-down device 4 serves to fix the sheet metal 2 in the die 3 or in the die 3 when the bending rail 1 moves back.
  • the sheet metal 2 cannot be displaced after it has been relieved of load, so that the sensor determines the springback path ⁇ X of the sheet metal 2 that has occurred.
  • This measure of holding down is only necessary for thin sheets. When relieved by the tool, thick sheets remain in the same place without any special hold-down.
  • Figure 1 shows a key switch 5, which in Head of the bending rail 1 is arranged and its electrical line 51 are connected to the electronic circuit of Figure 6.
  • the pushbutton switch serves to report the moment the sheet 2 is relieved from the bending rail 1 of the circuit 40 in FIG. Its function will be explained in more detail later in connection with FIG. 6.
  • the swivel bending process is shown in FIG. Since such machines are known, only the parts directly involved in the bending process were drawn.
  • the sheet 2 is clamped between the upper and lower cheek 6.
  • the bending beam 7 is moved in the direction of arrow 71 until the target bending angle «is reached.
  • the sheet 2 is drawn in dashed lines in this position.
  • the pushbutton switch 5 is arranged in the bending beam 7 and serves to report the moment when the sheet-like material 2 is relieved from the bending beam 7 of the electronic circuit 40 in FIG. In the known pivot bending, the error due to the springback angle ⁇ cannot be eliminated either.
  • the sensors are described with reference to FIGS. 3 to 5, which describe the bending path X springback path ⁇ X, Detect the bending angle ⁇ and the springback angle ⁇ of the sheet 2 and pass this information on to the electronic circuit of FIG. 6 as electrical signals.
  • FIG. 3 shows a sensor 10, the plunger 11 of which is slidably provided in the die or in the die 3.
  • the lower part of the plunger is formed as a rack in a - handle with the gear 12 protrudes, which is connected via shaft 13 to a rotary encoder 14 in conjunction.
  • a coil spring 15, the lower end of which is fastened to the construction piece 16 presses the plunger 11 against the sheet metal 2 with its upper end.
  • the plunger makes the movements of the sheet metal during the bending and the springback caused by the retraction of the bending rail 1.
  • the bending distance X and the springback distance AX are detected.
  • the movements of the plunger 11 reach the rotary encoder 14 via the gear wheel 12 and shaft 13, which converts the movement into electrical, analog or digital signals.
  • the electrical signals contain the information about the amount and the direction of the movement of the plunger 11. These signals are fed via line 37 to the electronic circuit 40 of FIG. 6, so that the bending path X and spring-back path ⁇ X can be processed therein. Since such rotary encoders 14 are known and commercially available, the generation of the electrical signals is not described in detail.
  • the forming member 14 can be designed as a rotary encoder or linear encoder.
  • the mechanical sensor 10 of FIG. 3 is only used for the free bending and die bending process of FIG. 1.
  • FIG. 4 shows a further exemplary embodiment of the mechanical sensor 10 with a scanning lever 17 which can be pivoted about its axis 17a and which rests on the sheet metal 2 by means of a spring 18 and which follows all the movements during the forming of the sheet metal.
  • the mechanical deflection of the scanning lever 17 is transmitted via a gear 19 to a shaping element 14 which generates digital or analog electrical signals and outputs them to the circuit of FIG. 6.
  • the shaping element 14 is drawn as a rotary encoder. It can also be designed as a slide potentiometer in a suitable mechanical form. With this sensor 10, bending path X and springback path L1 X can be detected.
  • FIG. 5 shows an optical sensor 20 which can be used for the free bending and die bending of FIG. 1 and for the swivel bending of FIG. 2.
  • the optical sensor consists of a light source 21, which is supplied with the necessary current via lines 211, one Collective lens 22, which directs the light rays 23 evenly onto light guides 240-249.
  • These light guides are arranged as optical fibers in a frame 26. In reality, a few hundred light guides are accommodated in the frame 26. The area is as large as the uniform illumination of the light guides 240 - 249 is ensured by the light rays 23 of the point light source 21. If a sheet-like light source is used, the area of the frame 26 for the light guide can be made larger, and the converging lens 23 is then no longer necessary.
  • Bending rail 1, die 3 for free bending or die 3 for die bending according to FIG. 1, or holder 6 and bending cheek 7 for pivot bending according to FIG. 2 are arranged in space 25 of optical sensor 20.
  • the optical sensor of FIG. 5 lies in the drawing plane of FIG. 1 and perpendicular to the drawing plane of FIG. 2, so that the light beams emerging from the light guides 240-249 are bent rail 1, sheet metal 2, die or Ge lower 3, upper and lower beam 6 and bending beam 7 illuminate.
  • a similar frame 26 is provided with a few hundred light guides 270-279.
  • These light guides receive the light and shadow areas of the bending rail 1 and the sheet metal 2 and guide them to a semiconductor component 28, which receives this optical information from the light guides 270-279 and converts them into electrical signals.
  • Such sensors are known as CCD semiconductor line sensors or CCD semiconductor matrix sensors from Fairchild. Such sensors are also described in the special edition by Ing. Erich Sommer, Frankfurt am Main 1973, article "Reticon line scan camera” by H. Friedberg. These sensors have an extremely high image resolution of 2048 points per CCD line sensor or 185,000 picture elements per CCD matrix sensor. Therefore, the light guides 270 - 279 are strongly bundled.
  • the optical information reaching the semiconductor module 28 contains the bending distance X, the bending angle ⁇ , the spring-back distance AX and the spring-back angle ⁇ with a resolution in the ⁇ m range.
  • the semiconductor module 28 transfers the information as fields analogous to the TV scanning principle to the following circuit 29, the register and logic modules of which transmit electrical signals which represent the detected amount and the detected direction of the bend X, ⁇ and the springback ⁇ X, ⁇ enter the line 37 into the electronic circuit 40 of FIG.
  • the radiation conductors of the 2nd type 270-279 can also be arranged at the same location as the radiation conductors of the 1st type 240-249. In this case, the rays from the radiation guides 240-249 reach a reflector which reflects them onto the radiation guides 270-279.
  • the radiation conductors of the second type can be arranged coaxially around the radiation conductors of the first type or as receivers next to the radiation conductors of the first type.
  • the reflector is advantageously at the other end of space 25 appropriate.
  • the radiation conductors 240-249 and 270-279 can be provided such that the lighting device 21, 22 and the optronic components 28, 29 are arranged at a certain distance from the room 25. This prevents the vibrations caused by the forming process from being transmitted to the sensitive components 21, 22, 28, 29.
  • the converging lens 22 and the light guides 240 - 249 and 270 - 279 are omitted. In this case, the beams reach the semiconductor module 28 directly and are processed there in the same way as already described.
  • the electronic circuit 40 of FIG. 6 is drawn as a block diagram.
  • the free bending or die bending method according to FIG. 1 was chosen as an example.
  • the sensors 10, 20 of FIGS. 3, 4, 5 are connected to the input lines 37 with their forming members 14, 28, 29.
  • the electrical signals which contain the information about the amount and the direction of the actual bend (distance X or angle ⁇ ) or the springback (distance Ax or angle ⁇ ), are given in the evaluator 44 and stored in the memory 41.
  • These signals on lines 37 can be analog or digital.
  • the signals in the evaluator 44 are checked for change speed, change standstill and direction.
  • the values of the springback ⁇ X or ⁇ are determined and stored in the computer 45, which, by means of further inputs by the circuits 46, 47, 48, forms the new TARGET value for compensating the springback distance ⁇ X or the springback angle A.oi.
  • the input circuit 46 contains the TARGET value of the bend X, i.
  • the input circuit 47 contains the properties of the sheet-like material 2 to be bent, such as material properties, modulus of elasticity, rolling direction and thickness.
  • the input circuit 48 contains the data of the tool geometry, such as, for example, the radius of the bending rail 1, the width of the die 3, the position and radius of the upper beam 6, the bending method selected.
  • the new TARGET value calculated in the computer 45 contains the force or the distance with which the sheet-like material 2 has to be bent a second time.
  • the new TARGET value reaches the actuator 50 via the signal generator 48.
  • the actuator 50 generates the electrical, pneumatic or hydraulic control signals which control the electrical, pneumatic or hydraulic drive of the forming machine according to FIGS. 1 or 2.
  • the bending rail 1 or bending beam 7 now bends the sheet-like material 2 for the second time. After the tool has been moved back, the sheet metal 2 has been bent further around the springback path & X and the angular error due to springback has thus been eliminated; ie the originally desired bending angle has been established.
  • each subsequent sheet is bent to the correct TARGET bending in a single bending process. This ensures reproducibility of the bend for any number of sheets.
  • the set-up times and dead times of a forming machine are reduced to a minimum.
  • a sensor 60, a shaping element 61 and a switch 5 are shown in broken lines in FIG. This is intended in the event that the sensor with the relative movement of the bend rail 1 is connected to the die or die 3 or to the axis of rotation of the bending beam 7; that is, sensor 60 and shaping element 61 electrically replace sensors 10, 20 with transducers 14, 28, 29.
  • the sensor 60 detects the relative movement of the bending rail 1 and the die 3, respectively. the pivoting of the bending beam 7 without making a difference between the bending process and the empty movement. Since the electrical signals are only required for the bending distance X or the bending angle ⁇ and for the spring-back distance ⁇ X or the spring-back angle ⁇ , the switch 5 is provided in the bending rail 1 or in the bending beam 7.
  • FIG. 1 Its arrangement for free bending or die bending is shown in FIG. 1.
  • the switch 5 is arranged in the bending beam 7. During the bending process, the switch 5 touches the sheet material 2. This closes it. If after the bending process the tool 1, 1 returns, the switch 5 remains closed as the sheet-like material 2 touches the tool. The switch is only opened when the tool separates from the sheet material. As long as the switch 5 is closed, a signal is given via line 51 via the evaluator 44 of the electronic circuit 40 of FIG. During this time, the evaluator 44 causes the actual signals of the sensor 60 and the shaping element 61 to be stored in the memory 41. These signals are processed in the computer 45 in the same way as the signals from the sensors 10, 20.
  • the actuating element 50 receives the signal generator 48 the new values for the next bending process to compensate for the springback distance bkX or the springback angle ⁇ of the sheet-like material 2.
  • the subsequent sheets are bent to the desired bend in a single bending process, since the springback error has been eliminated. This ensures reproducibility of the bend for any number of sheets.
  • the set-up and dead time for the forming machine of Figures 1 or 2 are reduced to a minimum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP85107474A 1984-06-27 1985-06-15 Dispositif pour une machine de travail de déformation des tôles Withdrawn EP0166351A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH310284 1984-06-27
CH3102/84 1984-06-27

Publications (2)

Publication Number Publication Date
EP0166351A2 true EP0166351A2 (fr) 1986-01-02
EP0166351A3 EP0166351A3 (fr) 1986-09-17

Family

ID=4248661

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85107474A Withdrawn EP0166351A3 (fr) 1984-06-27 1985-06-15 Dispositif pour une machine de travail de déformation des tôles

Country Status (1)

Country Link
EP (1) EP0166351A3 (fr)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2601603A1 (fr) * 1986-07-15 1988-01-22 Aripa Procede de pliage auto-adaptatif.
WO1988001916A1 (fr) * 1986-09-17 1988-03-24 Cincinnati Incorporated Systeme de commande adaptatif pour frein de presse hydraulique
US4802357A (en) * 1987-05-28 1989-02-07 The Boeing Company Apparatus and method of compensating for springback in a workpiece
EP0316703A2 (fr) * 1987-11-19 1989-05-24 Feintool International Holding Procédé et dispositif de pliage de pièces de travail
AT389829B (de) * 1988-05-03 1990-02-12 Haemmerle Ag Verfahren zum biegen von blechstuecken mit hilfe einer biegeeinrichtung
AT390575B (de) * 1988-04-25 1990-05-25 Haemmerle Ag Verfahren zum biegen eines werkstueckes
US4947666A (en) * 1988-09-16 1990-08-14 The Boeing Company Method and apparatus for bending an elongate workpiece
US4979385A (en) * 1988-04-21 1990-12-25 Eaton Leonard Picot S.A. Process and apparatus for monitoring backspringing when bending an elongated element such as a pipe
US5099666A (en) * 1989-11-14 1992-03-31 Amada Company, Limited Method and device for detecting folding angles of a metal sheet during folding
US5148693A (en) * 1989-11-14 1992-09-22 Amada Company, Limited Method and a device for detecting folding angles of a metal sheet during the folding and a method for folding of a metal sheet
US5168737A (en) * 1990-01-22 1992-12-08 U.S. Philips Corporation Method of producing a plate-shaped product comprising positioning a component which is connected to or forms part of a plate, and also device suitable for carrying out the method and plate-shaped product which can be manufactured according to the method
WO1995005905A1 (fr) * 1993-08-27 1995-03-02 L.V.D. Company N.V. Pliage adaptatif
WO1996041690A1 (fr) * 1995-06-12 1996-12-27 Trumpf Gmbh & Co. Procede et machine pour le pliage de pieces
US5603236A (en) * 1992-11-06 1997-02-18 Hongo; Toshio Sheet material bending angle detector, and operation method of press machine using the detector
NL1004820C2 (nl) * 1996-12-18 1997-12-23 Delem B V Werkwijze voor het besturen van een buigpers en buigpers voorzien van besturingsmiddelen voor het besturen van de buigpers volgens de werkwijze.
WO1998046378A1 (fr) * 1997-04-11 1998-10-22 Luciano Gasparini Procede de cintrage d'une feuille metallique sur une presse comprenant la mesure, la compensation et la surveillance de la deformation des traverses de la presse et procede de mise en oeuvre du procede de cintrage
WO1998058753A1 (fr) * 1997-06-20 1998-12-30 Luciano Gasparini Cintreuse-plieuse pour toles
WO2001003863A1 (fr) * 1999-07-13 2001-01-18 Amada Europe Presse plieuse a precision amelioree
NL1013378C2 (nl) * 1999-10-22 2001-04-24 Best Quality B V Inrichting en werkwijze voor het bepalen van een zethoek van een plaat en het gebruik daarvan voor het zetten van platen.
DE10006512A1 (de) * 2000-02-15 2001-09-13 Colgar Spa Abkantpresse mit einer Vorrichtung zum Messen des Biegewinkels am Werkstück
WO2003015951A1 (fr) * 2001-08-17 2003-02-27 Trumpf Maschinen Austria Gmbh & Co. Kg. Dispositif de fabrication, notamment presse plieuse, et procede pour l'exploitation d'un dispositif de fabrication
NL1021181C2 (nl) * 2002-07-30 2004-02-03 Best Quality B V Werkwijze en inrichting voor het meten van een afstand tot een plaat.
US7448242B2 (en) 2004-04-23 2008-11-11 Sick Ag Method for securing a machine tool and opto-electronic sensor for carrying out such a method
AT506313B1 (de) * 2008-02-19 2009-08-15 Trumpf Maschinen Austria Gmbh Biegegesenk für eine biegepresse, insbesondere abkantpresse
WO2012071850A1 (fr) * 2010-12-03 2012-06-07 长沙中联重工科技发展股份有限公司 Dispositif et procédé de mesure d'angle de flexion de pièce de flexion
WO2014165885A1 (fr) 2013-04-09 2014-10-16 Trumpf Maschinen Austria Gmbh & Co. Kg. Dispositif de mesure d'angle de pliage pour presse plieuse
WO2016094918A1 (fr) * 2014-12-17 2016-06-23 Trumpf Maschinen Austria Gmbh & Co. Kg. Outil de cintrage ayant un dispositif de mesure de décalage longitudinal
CN107350411A (zh) * 2017-08-30 2017-11-17 重庆市庆颖摩托车配件有限公司 一种可调式冲压模具
DE102018133551A1 (de) * 2018-12-21 2020-06-25 Bystronic Laser Ag Biegemaschine, Bearbeitungslinie und Verfahren zum Biegen
DE102020214784A1 (de) 2020-11-25 2022-05-25 Volkswagen Aktiengesellschaft Verfahren und Vorrichtung zum Umformen eines Bauteils

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2044199A1 (en) * 1970-09-07 1972-03-23 Karl Mengele & Söhne Maschinenfabrik und Eisengießerei, 8870 Günzburg Programme controlled sheet metal bending - using open tooling
DE1452836B2 (de) * 1964-10-14 1973-09-20 Giordano Geb. Alibert, Odette Biegewerkzeug
DE2305283B2 (de) * 1973-02-02 1979-06-21 G. Siempelkamp Gmbh & Co, 4150 Krefeld Verfahren und Vorrichtung zum Messen der bleibenden Durchbiegung eines Werkstückes bei einer Blechbiegepresse
DE2901376A1 (de) * 1979-01-15 1980-07-17 Mengele & Soehne Masch Karl Steuereinrichtung an freibiegemaschinen
US4430879A (en) * 1981-06-12 1984-02-14 Hurco Manufacturing Company, Inc. Apparatus for controlling a press brake
DE3245753A1 (de) * 1982-12-10 1984-06-14 Dorstener Maschinenfabrik Ag, 4270 Dorsten Verfahren zum einstellen eines masshaltigen eintauchweges des oberwerkzeuges einer biegepresse, insbesondere abkantpresse

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1452836B2 (de) * 1964-10-14 1973-09-20 Giordano Geb. Alibert, Odette Biegewerkzeug
DE2044199A1 (en) * 1970-09-07 1972-03-23 Karl Mengele & Söhne Maschinenfabrik und Eisengießerei, 8870 Günzburg Programme controlled sheet metal bending - using open tooling
DE2305283B2 (de) * 1973-02-02 1979-06-21 G. Siempelkamp Gmbh & Co, 4150 Krefeld Verfahren und Vorrichtung zum Messen der bleibenden Durchbiegung eines Werkstückes bei einer Blechbiegepresse
DE2901376A1 (de) * 1979-01-15 1980-07-17 Mengele & Soehne Masch Karl Steuereinrichtung an freibiegemaschinen
US4430879A (en) * 1981-06-12 1984-02-14 Hurco Manufacturing Company, Inc. Apparatus for controlling a press brake
DE3245753A1 (de) * 1982-12-10 1984-06-14 Dorstener Maschinenfabrik Ag, 4270 Dorsten Verfahren zum einstellen eines masshaltigen eintauchweges des oberwerkzeuges einer biegepresse, insbesondere abkantpresse

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2601603A1 (fr) * 1986-07-15 1988-01-22 Aripa Procede de pliage auto-adaptatif.
WO1988001916A1 (fr) * 1986-09-17 1988-03-24 Cincinnati Incorporated Systeme de commande adaptatif pour frein de presse hydraulique
US4802357A (en) * 1987-05-28 1989-02-07 The Boeing Company Apparatus and method of compensating for springback in a workpiece
EP0316703A2 (fr) * 1987-11-19 1989-05-24 Feintool International Holding Procédé et dispositif de pliage de pièces de travail
EP0316703A3 (fr) * 1987-11-19 1990-07-11 Feintool International Holding Procédé et dispositif de pliage de pièces de travail
US5007264A (en) * 1987-11-19 1991-04-16 Feintool International Holding Method and apparatus for the bending of workpieces
US4979385A (en) * 1988-04-21 1990-12-25 Eaton Leonard Picot S.A. Process and apparatus for monitoring backspringing when bending an elongated element such as a pipe
AT390575B (de) * 1988-04-25 1990-05-25 Haemmerle Ag Verfahren zum biegen eines werkstueckes
US4966029A (en) * 1988-04-25 1990-10-30 Haemmerle Ag Method of bending a workpiece to a predetermined bending angle
AT389829B (de) * 1988-05-03 1990-02-12 Haemmerle Ag Verfahren zum biegen von blechstuecken mit hilfe einer biegeeinrichtung
US4947666A (en) * 1988-09-16 1990-08-14 The Boeing Company Method and apparatus for bending an elongate workpiece
US5099666A (en) * 1989-11-14 1992-03-31 Amada Company, Limited Method and device for detecting folding angles of a metal sheet during folding
US5148693A (en) * 1989-11-14 1992-09-22 Amada Company, Limited Method and a device for detecting folding angles of a metal sheet during the folding and a method for folding of a metal sheet
US5168737A (en) * 1990-01-22 1992-12-08 U.S. Philips Corporation Method of producing a plate-shaped product comprising positioning a component which is connected to or forms part of a plate, and also device suitable for carrying out the method and plate-shaped product which can be manufactured according to the method
US5603236A (en) * 1992-11-06 1997-02-18 Hongo; Toshio Sheet material bending angle detector, and operation method of press machine using the detector
WO1995005905A1 (fr) * 1993-08-27 1995-03-02 L.V.D. Company N.V. Pliage adaptatif
BE1007424A5 (nl) * 1993-08-27 1995-06-13 Lvd Co Adaptief plooien.
US5829288A (en) * 1993-08-27 1998-11-03 L.V.D. Company N.V. Adaptive folding
WO1996041690A1 (fr) * 1995-06-12 1996-12-27 Trumpf Gmbh & Co. Procede et machine pour le pliage de pieces
US5842366A (en) * 1995-06-12 1998-12-01 Trumpf Gmbh & Company Method and a tooling machine for bending workpieces
NL1004820C2 (nl) * 1996-12-18 1997-12-23 Delem B V Werkwijze voor het besturen van een buigpers en buigpers voorzien van besturingsmiddelen voor het besturen van de buigpers volgens de werkwijze.
WO1998046378A1 (fr) * 1997-04-11 1998-10-22 Luciano Gasparini Procede de cintrage d'une feuille metallique sur une presse comprenant la mesure, la compensation et la surveillance de la deformation des traverses de la presse et procede de mise en oeuvre du procede de cintrage
WO1998058753A1 (fr) * 1997-06-20 1998-12-30 Luciano Gasparini Cintreuse-plieuse pour toles
FR2796320A1 (fr) * 1999-07-13 2001-01-19 Amada Europ Sa Presse plieuse a precision amelioree
WO2001003863A1 (fr) * 1999-07-13 2001-01-18 Amada Europe Presse plieuse a precision amelioree
US6539763B1 (en) 1999-07-13 2003-04-01 Amada Europe Precision press brake
US6644082B2 (en) 1999-07-13 2003-11-11 Amada Europe Precision press brake
US6651472B2 (en) 1999-07-13 2003-11-25 Amada Europe Precision press brake
US6771363B1 (en) 1999-10-22 2004-08-03 Best Quality B.V. Device and method for determining a bending angle of a sheet and the use thereof for the angle-bending of sheets
NL1013378C2 (nl) * 1999-10-22 2001-04-24 Best Quality B V Inrichting en werkwijze voor het bepalen van een zethoek van een plaat en het gebruik daarvan voor het zetten van platen.
WO2001028706A1 (fr) * 1999-10-22 2001-04-26 Best Quality B.V. Dispositif et procede de determination d'un angle de pliage d'une feuille et utilisation correspondante destinee au pliage de feuilles en fonction de l'angle
DE10006512A1 (de) * 2000-02-15 2001-09-13 Colgar Spa Abkantpresse mit einer Vorrichtung zum Messen des Biegewinkels am Werkstück
DE10006512C2 (de) * 2000-02-15 2002-07-18 Colgar Spa Vorrichtung für eine Abkantpresse zum Messen des Biegewinkels am Werkstück
US7281403B2 (en) 2001-08-17 2007-10-16 Trumpf Maschinen Austria Gmbh & Co. Kg Production device, in particular a folding press and a method for operating a production device
AT412071B (de) * 2001-08-17 2004-09-27 Trumpf Maschinen Austria Gmbh Fertigungseinrichtung, insbesondere abkantpresse, und verfahren zum betrieb einer fertigungseinrichtung
WO2003015951A1 (fr) * 2001-08-17 2003-02-27 Trumpf Maschinen Austria Gmbh & Co. Kg. Dispositif de fabrication, notamment presse plieuse, et procede pour l'exploitation d'un dispositif de fabrication
NL1021181C2 (nl) * 2002-07-30 2004-02-03 Best Quality B V Werkwijze en inrichting voor het meten van een afstand tot een plaat.
US7448242B2 (en) 2004-04-23 2008-11-11 Sick Ag Method for securing a machine tool and opto-electronic sensor for carrying out such a method
EP1589279B2 (fr) † 2004-04-23 2013-10-23 Sick Ag Procédé pour la sécurité d'une machine-outil et capteur optoélectronique pour la mise en oeuvre d'un tel procédé
AT506313B1 (de) * 2008-02-19 2009-08-15 Trumpf Maschinen Austria Gmbh Biegegesenk für eine biegepresse, insbesondere abkantpresse
EP2092991A2 (fr) 2008-02-19 2009-08-26 Trumpf Maschinen Austria GmbH & CO. KG. Matrice à plier pour une presse à plier, notamment presse plieuse
WO2012071850A1 (fr) * 2010-12-03 2012-06-07 长沙中联重工科技发展股份有限公司 Dispositif et procédé de mesure d'angle de flexion de pièce de flexion
WO2014165885A1 (fr) 2013-04-09 2014-10-16 Trumpf Maschinen Austria Gmbh & Co. Kg. Dispositif de mesure d'angle de pliage pour presse plieuse
WO2016094918A1 (fr) * 2014-12-17 2016-06-23 Trumpf Maschinen Austria Gmbh & Co. Kg. Outil de cintrage ayant un dispositif de mesure de décalage longitudinal
US10464114B2 (en) 2014-12-17 2019-11-05 Trumpf Maschinen Austria Gmbh & Co. Kg. Bending tool having a longitudinal-offset measuring device
CN107350411A (zh) * 2017-08-30 2017-11-17 重庆市庆颖摩托车配件有限公司 一种可调式冲压模具
CN107350411B (zh) * 2017-08-30 2019-02-15 重庆市庆颖摩托车配件有限公司 一种可调式冲压模具
DE102018133551A1 (de) * 2018-12-21 2020-06-25 Bystronic Laser Ag Biegemaschine, Bearbeitungslinie und Verfahren zum Biegen
DE102018133551B4 (de) * 2018-12-21 2021-04-15 Bystronic Laser Ag Biegemaschine, Bearbeitungslinie und Verfahren zum Biegen
DE102020214784A1 (de) 2020-11-25 2022-05-25 Volkswagen Aktiengesellschaft Verfahren und Vorrichtung zum Umformen eines Bauteils

Also Published As

Publication number Publication date
EP0166351A3 (fr) 1986-09-17

Similar Documents

Publication Publication Date Title
EP0166351A2 (fr) Dispositif pour une machine de travail de déformation des tôles
DE602004010262T2 (de) Verfahren zum bewegen einer mit einer kamera versehenen vorrichtung zu einer zielposition mittels eines steuersytems und steuersystem dafür
DE4245012B4 (de) Verfahren zur Messung von Formelementen auf einem Koordinatenmeßgerät
DE3041612C1 (de) Vorrichtung zur Winkellage-Orientierung von Drahtfuehrungselementen an polar oder kartesisch gesteuerten funkenerosiven Konisch-Schneidanlagen
AT509857B1 (de) Biegepresse mit einer werkteil-positionier- vorrichtung sowie ein verfahren zum betrieb
EP1133377A1 (fr) Dispositif et procede de balayage de la surface d'un objet a l'aide d'un faisceau laser
DE4028419A1 (de) Rohrbiegemaschine
DE2918100C2 (fr)
EP0594699A1 (fr) Porte-outil a commande numerique par ordinateur et travaillant dans plusieurs axes.
CH622457A5 (fr)
EP0762247A1 (fr) Appareil de mesure de coordonnées avec une commande qui déplace le palpeur de l'appareil de mesure suivant des données des valeurs de consigne
EP3560686B1 (fr) Machine d'usinage permettant la fabrication par couches de composants tridimensionnels
DE2052123B2 (de) Elektroerosionsanlage mit numerischer Bahnsteuerung für eine zwischen zwei Führungen gespannte Drahtelektrode
EP0482240A1 (fr) Procédé pour le façonnage précis de pièces à usiner plates ou légèrement courbées
DE3801969A1 (de) Verfahren und vorrichtung zum laeppen bzw. polieren optischer flaechen
DE112008003863B4 (de) Verfahren zum Erzeugen eines Antriebsmusters für ein Galvano-Scannersystem
DE3028834C2 (fr)
DE102013011307A1 (de) Verfahren und Vorrichtung zur Werkzeugmessung oder Werkstückmessung
DE3700190A1 (de) Vorrichtung und verfahren zum laserschneiden
DE2532290A1 (de) Verfahren zur automatischen bearbeitung eines werkstuecks und automatische werkzeugmaschine
EP2056990B1 (fr) Procédé et dispositif d'usinage de pièces à usiner au moyen d'un rayon laser
EP0335366A1 (fr) Procédé pour la commande numérique de trajectoire d'une machine d'électroérosion
DE2641851A1 (de) Brennschneidmaschine
DE2401424A1 (de) Vorrichtung zum funkenerosiven schneiden von sich erweiternden durchbruechen in metallischen werkstuecken
DE202010009009U1 (de) Vorrichtung zur Lasermaterialbearbeitung mit einem Polygonspiegel

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19850617

AK Designated contracting states

Designated state(s): BE DE FR GB NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): BE DE FR GB NL

17Q First examination report despatched

Effective date: 19880119

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19891021