EP1914019A1 - Presse plieuse et procédure correspondante de pliage de pièces - Google Patents

Presse plieuse et procédure correspondante de pliage de pièces Download PDF

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Publication number
EP1914019A1
EP1914019A1 EP07118338A EP07118338A EP1914019A1 EP 1914019 A1 EP1914019 A1 EP 1914019A1 EP 07118338 A EP07118338 A EP 07118338A EP 07118338 A EP07118338 A EP 07118338A EP 1914019 A1 EP1914019 A1 EP 1914019A1
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EP
European Patent Office
Prior art keywords
punch
press brake
workpiece
die
bending
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Withdrawn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
EP07118338A
Other languages
German (de)
English (en)
Inventor
Paolo Warcom S.p.A. Robazza
Alberto Warcom S.p.A. Robazza
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.)
Warcom SpA
Original Assignee
Warcom SpA
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 Warcom SpA filed Critical Warcom SpA
Publication of EP1914019A1 publication Critical patent/EP1914019A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • B21D5/0209—Tools therefor

Definitions

  • the present invention relates to an improved press brake. Moreover, the present invention also refers to an improved bending procedure implemented.
  • press brakes are used to bend metal parts, particularly sheet metal pieces or strips.
  • a press brake generally comprises a pair of machine tools that co-operate with one another to perform the bending operation.
  • the upper tool, or punch extends horizontally and is vertically movable in both directions.
  • the lower tool, or die is attached to the body of the machine and also extends horizontally, in the same direction as the punch.
  • press brakes By comparison with conventional moulding presses, press brakes have the considerable advantage of using far less power to bend a workpiece, to obtain angle bars from a sheet of metal for instance.
  • Press brakes often have the drawback, however, of failing to ensure a constant and satisfactory reproducibility of the end product.
  • the bend angle can generally be strongly influenced by a different thickness or a different spring-back of each workpiece, due for instance to a different prior rolling treatment on the workpiece.
  • it may be very difficult to obtain the same bend angle when different batches of workpieces are used, as is commonly the case in industrial production.
  • press brakes that use sensors to enable regulating means to identify the actual bend angle after the spring-back of the workpiece. This enables the punch to be operated several times to achieve the required bend angle, to within the allowable tolerances in each case.
  • press brakes that use a television camera to detect an image of the workpiece before it is bent and data processing means for using said image to establish the actual thickness of the workpiece, thus enabling the final theoretical bending point to be calculated.
  • the television camera can provide a further image showing the actual bend angle. Then the bending of the workpiece is repeated until the actual bend angle coincides with the required bend angle, within the range of the allowable tolerances.
  • a first drawback derives from the fact that it is often necessary to correct the focus of the television camera, e.g. to adjust it to suit the image of workpieces of different shape and size. Any such action necessarily entails a machine stoppage and a consequent increase in the overall machining times.
  • measurement errors can be determined by mechanical strains on the die, the base, the upper cross member and/or the columns of the press brake, due to the load brought to bear by the punch during the bending of the workpiece.
  • these mechanical strains can induce a deterioration in the detecting of the images of the tooling and workpiece, with a consequent measurement error.
  • risk of error in the movement of the punch with a consequent increase in the probability of unsatisfactory end products being obtained.
  • the main technical aim of the present invention is therefore to realise a press brake that enables the above-mentioned drawbacks to be overcome.
  • an object of the present invention is to realise a press brake that makes the bending process highly and constantly reproducible, even for work pieces from different batches.
  • Another object of the present invention is to realise a press brake that is highly reliable and robust in operation, enabling the machining times and the number of rejects to be reduced to a minimum.
  • Another object of the present invention is to realise a press brake that enables a reduction in the influence of the mechanical strains induced in the parts of the die side of the press brake by the load brought to bear by the punch during the bending process.
  • Another, not necessarily last object of the present invention is to realise a press brake that is relatively straightforward to operate and easy to manufacture at a competitive cost.
  • the present invention provides a press brake according to the claim 1, as stated below.
  • the press brake according to the present invention has improved regulating means comprising detecting means capable of acquiring high-quality images of the tooling and workpiece. Said regulating means further enable highly accurate data to be drawn from said images, relating to one or more quantities indicative of the size, shape and/or position of the tooling and workpiece. This makes it possible an accurate assessment of the operating parameters characterising the bending cycle and consequently ensures that the bending process is highly and constantly reproducible, with a reduction in the number of rejects and in the machining times.
  • the present invention relates also to an improved and more reliable bending procedure of a workpiece.
  • the present invention refers to a press brake 1 that comprises a base or lower cross member 2, to which a die 3 is attached that extends horizontally in relation to the base 2, along the horizontal longitudinal axis 4 of the machine 1.
  • a punch 5 that can be attached to an upper tool-holder cross member 6, supported by a pair of columns 8 extending upwards from the base 2.
  • the punch 5 is vertically movable in both directions (arrow 50) along a substantially straight trajectory.
  • the punch 5 is moved by suitable oil hydraulic drive means (not shown). The punch 5 can thus co-operate with the die 3 to bend a workpiece 7, for instance a piece of sheet metal.
  • the press brake 1 also comprises regulating means 10 for regulating the bending of the workpiece 7.
  • These regulating means 10 comprise first detecting means 11 comprising light emitting means 12 and optical sensing means 14.
  • the light emitting means 12 are designed to deliver a beam of light 13 in the direction in which the die 3 extends.
  • the beam of light 13 is preferably directed along the vertical plane containing the bottom line of the V-shaped upper recess 3A in the die 3, running in the direction of the axis 4.
  • the beam of light 13 is advantageously of predefined area 13A (figure 4A), e.g. circular or rectangular, so that it at least partially illuminates at least a predefined portion of the die 3, the punch 5 and/or the workpiece 7, in the direction in which the die 3 extends.
  • the beam 13 thus projects at least a portion of the cross-section (i.e. of the section along a plane orthogonal to the axis 4) of the die 3, punch 5 and/or workpiece 7, on a predefined plane (not shown) lying substantially perpendicular to the direction in which the die 3 extends.
  • the light emitting means preferably comprise a laser source that emits a beam of light within the visible range. The use of a laser source is extremely advantageous because it produced a strongly directional and polarised beam of light.
  • the optical sensing means 14 are suitable for acquiring an image of said projection generated by the beam of light 13.
  • the optical sensing means 14 preferably comprise a television camera or digital camera comprising an optical receiver matrix (not shown) arranged orthogonally to the axis 4 and aligned with the beam of light 13.
  • the receiver plane of the optical receiver matrix advantageously coincides with the plane on which the cone of shadow generated by the cross-section of the die 3, punch 5 and/or workpiece 7 is projected when they are illuminated by the beam of light 13.
  • a back-lit image of the cross-section of the tooling 3 and 5 and/or the workpiece 7 is thus detected.
  • Figure 3 shows an example of an image detected by said optical means 14. In this image, the back-lit profile of the die 3, the punch 5 and the workpiece 7 are clearly distinguishable.
  • the light emitting means 12 and the optical sensing means 14 are advantageously aligned with one another in the direction in which the punch 5 extends. They are advantageously positioned in line with a first end and a second end of the punch 5, on the outside of the workspace of the press brake 1, as shown in figure 2 for the light emitting means 12.
  • the light emitting means 12 and the optical means 14 are vertically movable in both directions (arrow 500). They preferably move as a function of the movements of the punch 5, so as to maintain a predefined (and preferably constant) position and alignment with respect to the punch 5.
  • the means 12 and 14 can be integrally connected to the upper cross member 6 by means of a suitable supporting elements (not shown), so as to be displaced directly by said cross member 6.
  • the first detecting means 11 preferably also comprise first electronic means 15 suitable for receiving as input and processing the data 16 relating to the image acquired by the optical means 14.
  • the first electronic means 15 process the image received from the optical means 14, e.g. removing any streaks of interference or other luminous impurities or artefacts.
  • the first electronic means 15 thus enable a relatively good-quality image to be obtained, for subsequent use in deriving certain notable data relating to the die 3, the punch 5 and the workpiece 7.
  • the first electronic means 15 are also suitable for receiving control signals 17A as input, on the basis of which they govern the operation of the light emitting means 12 and/or of the optical means 14, by sending suitable control signals 18A and 18B.
  • the regulating means 10 advantageously comprise second electronic means 20, operatively connected to the first electronic means 15 and to the control system 31 for the press brake 1.
  • the second electronic means 20 are suitable for obtaining data 20A indicative of one or more relevant quantities relating to the die 3, the punch 5 and/or the workpiece 7.
  • the data 20A are advantageously derived from the data 19A, received by the first electronic means 15.
  • Said data 19A can optionally also be integrated with data 19B, received by the control system 31 of the press brake 1, and/or with data 19C, received by third electronic means 41.
  • the second electronic means 20 advantageously serve as an interface between the first detecting means 11 and the control system 31 of the press brake 1. They calculate several notable quantities relating to the shape, size and position of the tooling 3 and 5, and of the workpiece 7, starting from the images (data 19A) provided by the first detecting means 11. For instance, during the process for bending the workpiece 7, the second electronic means 20 can advantageously calculate the dimensions of the cross-section of the tooling 3 and 5, the relative position of the punch 5, the thickness of the workpiece 7 and/or the bend angle obtained on the workpiece 7.
  • the data 20A are obtained using suitable algorithms for processing the images 19A provided by the first detecting means 1l. For this purpose, procedures are advantageously used that analyse the mutual luminous interference between the tooling 3 and 5, and the workpiece 7.
  • the second electronic means 20 use the data 20A to generate the control signals 17A and 17B for the control system 31 and for the first detecting means 11, respectively .
  • the controls signals 17A and 17B enable the operation of the first detecting means 11 and of the press brake 1 to be adjusted and co-ordinated during the bending of the workpiece 7.
  • the regulating means 10 also detect and process data relating to first mechanical strains coming to bear on the die 3, the base 2 and/or the upper cross member 6, and/or second mechanical strains coming to bear on the columns 8 of the press brake 1.
  • the above-mentioned mechanical strains typically develop during the bending procedure and, as mentioned earlier, are determined by the load brought to bear by the punch 5. They are generally directed in a parallel vertical plane and in a plane orthogonal to the longitudinal axis 4, respectively, and both in a direction substantially perpendicular to the plane on which the press brake 1 stands.
  • the regulating means 10 advantageously comprise second detecting means 43 for detecting data indicative of said first and/or second mechanical strains.
  • the second detecting means 43 comprise one or more sensors 40, for instance, positioned in line with the base 2, the upper cross member 6 and/or the columns 8 of the machine 1.
  • the second detecting means 43 comprises also third electronic means 41, which process the fourth set of data 40A provided by the sensors 40 and preferably also send the resulting data 19C to the second electronic means 20.
  • the third electronic means 41 Based on these processed data, the third electronic means 41 generate as output the control signals 41A for actuator means 42, preferably associated operatively with the base 2.
  • the actuator means 42 bring a force to bear to compensate for the effect of said first and/or second mechanical strains. For instance, the actuator means 42 exert a force on the die 3 sufficient to counter the bending strain along the longitudinal axis 4. The die 3 thus becomes substantially undeformable during the bending of the workpiece 7.
  • Said preferred bending procedure also comprises various stages in which at least one image is detected of at least a portion of the cross-section of the die 3, the punch 5 and/or the workpiece 7, and data relating to the shape and/or size, and/or position of the die 3, the punch 5 and/or the workpiece 7 are processed.
  • Said image is detected as a result of instructions 18A and 18B being sent by first electronic means 15 to the light emitting means 12 and/or the optical means 14.
  • Said control signals are sent after the first electronic means 15 have received corresponding control signals 17A from the second electronic means 20.
  • the data 16 relating to the image detected by the optical means 14 are sent to the first electronic means 15, which perform a first processing of said image.
  • the data 19A relating to the image processed by the first electronic means 15 are then sent to the second electronic means 20 to obtain the data 20A relating to the physical quantities of interest.
  • the above-described operative sequence is preferably repeated for each of said stages of the bending procedure.
  • stages of said preferred bending procedure involve calculating several notable points on the trajectory of the punch 5 and operating the press brake 1 to transfer said punch 5 to said notable points.
  • a vertical movement 50 of the punch 5 coincides with a vertical movement 500 of the light emitting means 12 and the optical means 14, so the light emitting means 12 and the optical means 14 remain in a pre-set (and preferably constant) position and alignment relative to the punch 5.
  • Said notable points are preferably calculated by the second electronic means 20 on the strength of the processed data 20A, the shape and size of the tooling 3 and 5, and/or additional data 19B and/or 19C received as input respectively from the control system 31 and the second detecting means.
  • the subsequent operations of the press brake 1 are governed by the control system 31, based on the control signals 17B, received from the second electronic means 20.
  • Said preferred bending procedure advantageously comprises a stage (a) of placing the work piece 7 in line with the bending edge 3B of the die 3.
  • the workpiece 7 can be placed in position manually or by means of a service robot.
  • the punch 5 is at the rest point when the machine is used for the first time, or at the top dead centre of the trajectory if it has returned to start a new machining cycle.
  • the procedure according to the invention comprises a subsequent stage (b) of detecting at least one image relating to at least a portion of the cross-section of the punch 5 and processing data relating to the shape and/or size, and/or position of the punch 5.
  • the processed data 20A refer to the relative position of the lower edge 5A of the punch 5.
  • the procedure according to the invention then comprises a stage (c) of calculating the speed change point on the trajectory of the punch 5 and operating the press brake 1 to bring the bending edge 5A of the punch 5 into line with said speed change point.
  • the procedure according to the invention comprises a stage (e) of detecting at least one image relating to a portion of the cross-section of the workpiece 7 and processing data relating to the thickness of the workpiece 7.
  • the processed data 20A refer, in particular, to the thickness of the workpiece 7.
  • the bottom dead centre is also calculated as a function of the theoretical bend angle required for the workpiece 7.
  • the press brake 1 is operated to bring the bending edge 5A of the punch 5 to said bottom dead centre, thereby inducing the bending of the workpiece 7 (figure 4B).
  • the procedure according to the invention comprises a stage (g) of calculating the floating point on the return trajectory of the punch 5 and operating the press brake 1 to make the bending edge 5A of the punch 5 return to said floating point.
  • the floating point can also be calculated by measuring the spring-back of the workpiece 7 as the punch 5 returns from the bottom dead centre.
  • the above-mentioned stage (g) preferably also involves an operative step of determining a succession of sampling points along the stretch of the return trajectory of the punch 5 coming between the bottom dead centre and the punch/sheet contact point.
  • Said operative step can also be performed by the second electronic means 20.
  • the operative step involves acquiring at least one image relating to at least a portion of the cross-section of the die 3, the punch 5 and/or the workpiece 7 for each of the selected sampling points, and processing data relating to the spring-back of the workpiece 7.
  • the data thus processed are integrated by means of another operative step involving the acquisition by the second detecting means 43 and, where necessary, by one or more additional sensors (not shown), of data relating to said first and/or second mechanical strains in line with one or more of said sampling points.
  • the floating point can be calculated on the base of additional properly placed sensing means (not shown).
  • the procedure according to the invention then involves a stage (h) of acquiring at least one image relating to at least a portion of the cross-section of the workpiece 7 and processing data relating to the actual bend angle of the workpiece 7, after the spring-back has occurred.
  • the procedure according to the invention then comprises a stage (i) of comparing the data relating to the actual bend angle detected at said stage (h) with the data relating to the theoretical bend angle calculated at the previously-mentioned stage (f).
  • the bending action on the workpiece can be repeated as often as necessary.
  • the procedure includes a stage (1) of calculating a new theoretical bend angle and a new bottom dead centre for the trajectory of the punch 5, and a stage (m) of repeating the previous stages (g), (h), and (i), using the newly-calculated bottom dead centre and theoretical bend angle.
  • the above-described bending procedure also includes an adjustment to achieve a dynamic attenuation of the effects deriving from the onset of the above-mentioned mechanical strains, particularly the strains affecting the die 3 and the upper cross member 6.
  • the bending procedure preferably includes performing a procedure, in parallel with the previously-described stages, and stages (c)-(g) in particular, to compensate for said mechanical strains.
  • Said compensation method advantageously includes the following operative steps:
  • the actuator means 42 which can comprise, for instance, a series of oil hydraulic actuators associated with the base 2.
  • the actuator means 42 take effect on the strength of control signals 41A sent by the third electronic means 41, which acquire the data 40A from the sensors 40 and perform software algorithms to filter and process the signals they receive.
  • the sensors 40 advantageously comprise one or more analog pressure sensors placed along the entire length of the base 2 to provide one or more detecting points.
  • the bending procedure also includes a detecting method to integrate the calculation of notable points on the trajectory of the punch 5, and particularly of the speed change point, the punch/sheet contact point, the bottom dead centre and/or the floating point, taking into account the effects of said first and/or second mechanical strains on the body of the press brake.
  • the detecting method comprises the following steps:
  • the data relating to the mechanical strains are collected by the sensors 40, which in this case can advantageously also comprise several sensors placed in line with the columns 8 of the press brake 1.
  • the data detected are processed by the third electronic means 41, using suitable filtering algorithms.
  • the third electronic means 41 send the data 19C to the second electronic means 20 and, where necessary, to the control system 31, for the calculation of the notable points on the trajectory.
  • the second and third electronic means 20 and 41 may be integrated in a single microprocessor-controlled circuit, preferably incorporated in the control system 31.
  • different types of signal from those described above may also be exchanged between the different components of the regulating means 10, and between said components and the control system 31, to guarantee an optimal and efficient functional operation of the press brake 1.
  • the press brake according to the invention enables a high and constant reproducibility of the bending process to be achieved. Thanks to the accuracy of the optical measurements obtained by the first detecting means 11, even minimal variations in the thickness of the different workpieces being bent can be allowed for during the operating cycle of the machine. Moreover, the first detecting means 11 enable an extremely precise assessment of the level of wear and tear on the tooling, i.e. on the die 3 and the punch 5. For instance, images detected at different times during the working cycle of the tooling can be compared and the corresponding levels of wear can be analysed. At each test, the data relating to the tooling can be brought up to date and a greater accuracy of the data processing performed during subsequent processing cycles can thus be guaranteed.
  • the press brake according to the invention is particularly sturdy in operation, given the ambient conditions in which it is used.
  • the first detecting means 11 provide a strongly directional lighting of the tooling 3 and 5, and of the workpiece 7, by means of a dedicated light source, preferably a laser light source. This enables a marked reduction in the negative interference of conditions of lighting that is too strong or directed crosswise to the workspace for the machine.
  • the lighting system enables an optimal and constant focusing of the image to be achieved by the optical sensing means 14. This enables relatively clear images to be acquired and a consequently more precise processing of the quantities and/or positions of interest. In a word, the working cycle of the machine can be adjusted very precisely.
  • An additional adjustment accuracy derives from the second detecting means 43, which enable the effects of the mechanical strain on the machine body during the working cycle to be compensated and/or taken into account.
  • the second electronic means 20 used as an intelligent interface between the first detecting means 11 and the control system 31, the regulating means 10 also enable a marked automation of the different stages of the bending cycle, reducing or even eliminating the need for any action by the operator.
  • the strong degree of automation in the machine's operation makes it considerably easier to use, while also affording a better performance than with the known state of the art.
  • the press brake according to the invention is a of relatively straightforward design and can consequently be manufactured industrially at highly competitive costs.
EP07118338A 2006-10-18 2007-10-11 Presse plieuse et procédure correspondante de pliage de pièces Withdrawn EP1914019A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTV20060182 ITTV20060182A1 (it) 2006-10-18 2006-10-18 Macchina presso-piegatrice e relativo procedimento di piegatura di un pezzo in lavorazione.

Publications (1)

Publication Number Publication Date
EP1914019A1 true EP1914019A1 (fr) 2008-04-23

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EP07118338A Withdrawn EP1914019A1 (fr) 2006-10-18 2007-10-11 Presse plieuse et procédure correspondante de pliage de pièces

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EP (1) EP1914019A1 (fr)
IT (1) ITTV20060182A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1035796C2 (nl) * 2008-08-06 2009-05-19 Design D Kantpers en werkwijze voor het buigen van plaatmateriaal.
EP2147729A1 (fr) * 2008-07-25 2010-01-27 Fiessler Elektronik GmbH & Co. KG Dispositif de déformation
WO2012155168A1 (fr) * 2011-05-17 2012-11-22 Trumpf Maschinen Austria Gmbh & Co. Kg. Dispositif de mesure d'angles destiné à une presse plieuse
EP2614900A1 (fr) * 2012-01-12 2013-07-17 Trumpf Maschinen Austria GmbH & CO. KG. Dispositif de fabrication avec outils de pliage et outil de positionnement
CN103438836A (zh) * 2013-08-23 2013-12-11 中联重科股份有限公司 折弯件折弯角度测量设备、系统及方法
WO2014165885A1 (fr) 2013-04-09 2014-10-16 Trumpf Maschinen Austria Gmbh & Co. Kg. Dispositif de mesure d'angle de pliage pour presse plieuse
WO2018090069A1 (fr) * 2016-11-18 2018-05-24 Trumpf Maschinen Austria Gmbh & Co. Kg. Procédé de fonctionnement d'une machine de cintrage
CN110456423A (zh) * 2018-05-07 2019-11-15 特鲁普机械奥地利有限公司及两合公司 用于弯曲单元的切削碎屑识别
WO2020137644A1 (fr) * 2018-12-25 2020-07-02 株式会社アマダホールディングス Dispositif de sécurité optique, presse-plieuse et procédé de détection de travail
CN112246923A (zh) * 2020-09-19 2021-01-22 深圳市奥斯玛数控发展有限公司 一种下动折弯机
CN112601621A (zh) * 2018-08-28 2021-04-02 特鲁普机械奥地利有限公司及两合公司 用于操作折弯机的方法

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US4797831A (en) * 1986-11-18 1989-01-10 Cincinnati Incorporated Apparatus for synchronizing cylinder position in a multiple cylinder hydraulic press brake
JPH03114615A (ja) * 1990-09-14 1991-05-15 Amada Co Ltd プレスブレーキ
US5483750A (en) * 1993-06-16 1996-01-16 Kabushiki Kaisha Komatsu Seisakusho Springback angle measuring instrument for V-bending
JP2003094116A (ja) * 2001-09-21 2003-04-02 Amada Co Ltd 曲げ加工装置
JP2004066248A (ja) * 2002-08-01 2004-03-04 Amada Co Ltd 曲げ加工装置
EP1589279A2 (fr) * 2004-04-23 2005-10-26 Sick Ag Procédé pour la sécurité d'une machine-outil et capteur optoélectronique pour la mise en oeuvre d'un tel procédé.
WO2006135961A1 (fr) * 2005-06-20 2006-12-28 Lazer Safe Pty Ltd Systeme d'imagerie et de securite et procede pour machine industrielle

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Publication number Priority date Publication date Assignee Title
US4797831A (en) * 1986-11-18 1989-01-10 Cincinnati Incorporated Apparatus for synchronizing cylinder position in a multiple cylinder hydraulic press brake
JPH03114615A (ja) * 1990-09-14 1991-05-15 Amada Co Ltd プレスブレーキ
US5483750A (en) * 1993-06-16 1996-01-16 Kabushiki Kaisha Komatsu Seisakusho Springback angle measuring instrument for V-bending
JP2003094116A (ja) * 2001-09-21 2003-04-02 Amada Co Ltd 曲げ加工装置
JP2004066248A (ja) * 2002-08-01 2004-03-04 Amada Co Ltd 曲げ加工装置
EP1589279A2 (fr) * 2004-04-23 2005-10-26 Sick Ag Procédé pour la sécurité d'une machine-outil et capteur optoélectronique pour la mise en oeuvre d'un tel procédé.
WO2006135961A1 (fr) * 2005-06-20 2006-12-28 Lazer Safe Pty Ltd Systeme d'imagerie et de securite et procede pour machine industrielle

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2147729A1 (fr) * 2008-07-25 2010-01-27 Fiessler Elektronik GmbH & Co. KG Dispositif de déformation
NL1035796C2 (nl) * 2008-08-06 2009-05-19 Design D Kantpers en werkwijze voor het buigen van plaatmateriaal.
WO2012155168A1 (fr) * 2011-05-17 2012-11-22 Trumpf Maschinen Austria Gmbh & Co. Kg. Dispositif de mesure d'angles destiné à une presse plieuse
AT511557A1 (de) * 2011-05-17 2012-12-15 Trumpf Maschinen Austria Gmbh Winkelmessvorrichtung für eine biegepresse
AT511557B1 (de) * 2011-05-17 2013-08-15 Trumpf Maschinen Austria Gmbh Winkelmessvorrichtung für eine biegepresse
EP2614900A1 (fr) * 2012-01-12 2013-07-17 Trumpf Maschinen Austria GmbH & CO. KG. Dispositif de fabrication avec outils de pliage et outil de positionnement
WO2014165885A1 (fr) 2013-04-09 2014-10-16 Trumpf Maschinen Austria Gmbh & Co. Kg. Dispositif de mesure d'angle de pliage pour presse plieuse
CN103438836A (zh) * 2013-08-23 2013-12-11 中联重科股份有限公司 折弯件折弯角度测量设备、系统及方法
WO2018090069A1 (fr) * 2016-11-18 2018-05-24 Trumpf Maschinen Austria Gmbh & Co. Kg. Procédé de fonctionnement d'une machine de cintrage
CN110023000A (zh) * 2016-11-18 2019-07-16 特鲁普机械奥地利有限公司及两合公司 折弯机的操作方法
CN110023000B (zh) * 2016-11-18 2021-10-15 特鲁普机械奥地利有限公司及两合公司 折弯机的操作方法
CN110456423A (zh) * 2018-05-07 2019-11-15 特鲁普机械奥地利有限公司及两合公司 用于弯曲单元的切削碎屑识别
CN110456423B (zh) * 2018-05-07 2024-03-19 特鲁普机械奥地利有限公司及两合公司 用于弯曲单元的切削碎屑识别
CN112601621A (zh) * 2018-08-28 2021-04-02 特鲁普机械奥地利有限公司及两合公司 用于操作折弯机的方法
WO2020137644A1 (fr) * 2018-12-25 2020-07-02 株式会社アマダホールディングス Dispositif de sécurité optique, presse-plieuse et procédé de détection de travail
JP2020099929A (ja) * 2018-12-25 2020-07-02 株式会社アマダ 光学式安全装置、プレスブレーキ、及びワーク検出方法
CN112246923A (zh) * 2020-09-19 2021-01-22 深圳市奥斯玛数控发展有限公司 一种下动折弯机
CN112246923B (zh) * 2020-09-19 2022-08-23 深圳市奥斯玛数控发展有限公司 一种下动折弯机

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