EP0155228A1 - Plattenbiegemaschine, deren Biegemechanismus eine Überwachung des Biegewinkels gestattet - Google Patents
Plattenbiegemaschine, deren Biegemechanismus eine Überwachung des Biegewinkels gestattet Download PDFInfo
- Publication number
- EP0155228A1 EP0155228A1 EP85810020A EP85810020A EP0155228A1 EP 0155228 A1 EP0155228 A1 EP 0155228A1 EP 85810020 A EP85810020 A EP 85810020A EP 85810020 A EP85810020 A EP 85810020A EP 0155228 A1 EP0155228 A1 EP 0155228A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- folding
- angle
- sheet
- bars
- measuring
- 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- Withdrawn
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
-
- 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
- B21D5/0272—Deflection compensating means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S72/00—Metal deforming
- Y10S72/702—Overbending to compensate for springback
Definitions
- the invention relates to a press for bending sheet metal, the folding device of which allows continuous control of the bending angle of the sheet metal to be bent.
- the folding angle obtained can exhibit significant variations along the folding line.
- the causes of these differences in folding angle are mainly due to the following factors: deformations appearing in the press at the time of folding, in particular deformations of the upper apron and deformations of the lower apron, deformations of the amounts of the press and of the tooling, tolerances in the construction of the machine and the tools, wear of the tools, quality of the sheets, and in particular tolerances in the thickness of the sheets.
- the characteristics of two apparently similar sheets are not always strictly identical, which means that, for the same movement of the tool, it can result in substantially different bending angles for these two sheets.
- presses of the kind described above require numerous tests and adjustments and, for the most part, oblige the user to predetermine the deformation due to the work of the press.
- these presses only compensate for the angle differences due to deformations of the machine, the uprights and the upper and lower aprons, but not the other differences, due for example to local deformations of the die or the punch. or the wear of these.
- these presses do not make it possible to solve the problem of obtaining a constant precision of the bending angle from one sheet to another. Indeed, from one batch of sheets to another, and even for the same batch of sheets, the characteristics of the sheets, in particular their thickness, their resistance or their elasticity, are not always strictly identical from one sheet to another .
- Presses which make it possible to measure the folding angle during the folding cycle. These are, for example, presses described in patent applications FR 2 362 722, DE 2 044 199 and in US patent 3,440,847.
- the control devices described in the above patents are not very precise. In fact, their arrangement is such that they measure the folding angle outside the die, which generally results in a significant error due to the weight of the sheet.
- a more precise measurement of the folding angle is obtained with the device described in patent application GB 2 072 551, which makes it possible to measure the angle at the location of the folding, in the matrix.
- this device does not allow a correct measurement in the case of asymmetrical folding which occurs, for example, when the sheet is folded near one of its edges, one of the two sides of the sheet then being significantly more heavy than the other.
- a control device allowing a more precise measurement of the bending angle is described in the German utility model G 82 34 901.0, which relates to a small press for bending metal profiles.
- the folding angle is determined at the location of the folding using two measuring bars, each having a flat surface on which the profile rests during folding, these bars being arranged so as to undergo rotation during folding.
- Measuring bars of similar shape can advantageously be used in a device for controlling the bending angle of the presses for bending sheets.
- the object of the present invention is to provide a press for bending sheets, which allows continuous and automatic control of the bending angle of the sheet and which allows to obtain automatically and with very high precision the imposed bending angle, the bending angle being obtained constant over the entire length of the sheet.
- the present invention relates to a press for bending sheets, as defined in claim 1.
- the invention also relates to a method of actuating the press, as defined in claim 10.
- the press comprises an upper apron 1 and a lower apron 2.
- the upper apron supports a punch 3 and the lower apron a tool holder 4.
- the upper apron is provided with two jacks 17, 17 'intended to set the punch in motion 3.
- Displacement means 5 are located in a slot made in the lower deck. They are intended to remedy the defects inherent in the folding process listed above, such as deformations appearing in the press at the time of folding, the quality of the sheets, etc.
- the sheet bending angle control device comprises two pairs of measuring bars 6, 6 'and a series of pairs of measuring bars 16, 16', each of the bars 6, 6 'and 16, 16' being of round section and longitudinally truncated so as to present a flat upper surface 7, the two bars of a couple being housed side by side in a housing arranged on the surface of the tool holder 4, the two pairs of measuring bars 6 , 6 'being arranged respectively above the uprights 18, 18' of the press, the pairs of bars 16, 16 'being arranged above the displacement means 5, so that each displacement means 5 corresponds to a pair of measuring bars 16, 16 '.
- the pairs of measuring bars are arranged end to end, so that the flat surfaces 7 constitute two continuous surfaces.
- Each measuring bar is integral with a measuring device 8 intended to measure the angle of rotation of the bar.
- each measuring device 8 consists of two potentiometers, each of them being arranged inside one of the two bars 6, 6 'or 16, 16'.
- the control device further comprises a control device 9 connected to the various measurement devices 8, to control means 13, 13 ′ of the jacks 17, 17 ′ for actuating the movement of the punch 3 as well as to means of control 15 of the displacement means 5.
- the control of the folding angle of the sheet to be folded 10 is carried out as follows: at the start of the folding operation, the sheet is put in place so that its surface lower is in contact with the flat surfaces 7 of the measuring bars.
- the value of the imposed folding angle is indicated at a control station 11.
- the entire folding operation will then be carried out continuously and automatically, without requiring the intervention of an operator.
- the measuring bars when the sheet 10 begins to bend under the force due to the punch 3, the measuring bars, the flat rectified surfaces of which 7 remain in close contact with the lower surface of the sheet, will undergo a rotation whose angle will be measured by the measuring devices 8, the angles of rotation a and measured absolutely for each of the two bars 6, 6 'or 16, 16' of a pair of bars being added by the control device 9, so as to determine the instantaneous local folding angle y of the sheet.
- the control device 9 is arranged so as to be able to compare the various instantaneous local values of the folding angle and to control the actuation of one or more displacement means 5, so as to standardize the folding angle over the entire length of the sheet and to control the continuation of the movement of the punch 3 via the control means 13, 13 'of the jacks 17, 17', so as to continue the folding operation without interruption, the same process repeating continuously and automatically until the required and constant bending angle is obtained along the entire length of the sheet.
- the control device is arranged so that the thrusts exerted by each of the jacks 17, 17 'can be different.
- the comparison between them of the measured local values of the folding angle is carried out by electronic means 14, electronic means 12 making it possible to compare these values with the angle of imposed folding, the control means 13, 13 'of the jacks 17, 17' are constituted by servo-valves, the control means 15 of the displacement means 5 being constituted by pressure valves or servo-valves, in number equal to that of the displacement means 5.
- the punch stroke is imposed, which must be determined beforehand.
- the stroke of the punch being controlled continuously by the control device 9, until the angle of imposed folding, this angle being obtained with very high precision, and constant over the entire length of the sheet.
- the folding process no longer requiring operator intervention at any time, and the folding operation taking place without apparent interruption of the folding movement, this results in an appreciable saving of time.
- the problem of the variation of the folding angle which can occur after the end of the folding movement, when an expansion of the sheet occurs, is easily solved with the present press.
- the control device 9 controls the automatic discharge of the force applied to the punch. If a change in the bending angle is detected (due to the sheet metal relaxing), the bending process resumes bending to a bending angle less than the imposed value, so as to take account of the new planned relaxation of the sheet, the process repeating until the required bending angle is obtained.
- the measuring bars are arranged in a housing arranged on the surface of the tool holder. According to another variant of the press, the measuring bars are arranged in a housing directly arranged in the apron, the tool holder 4 being absent. In the variant described, the measuring bars are arranged so as to be integral with the lower bulkhead. In another variant, the functions of the two aprons are reversed and the measuring bars are arranged in the upper apron or on the surface of a tool holder supported by the upper apron, the punch being integral with the lower apron.
- the displacement means 5 are arranged in the lower deck. Of course, it is also possible to arrange them in the upper deck or to arrange them in each of the upper and lower decks. In particular, the displacement means 5 can be arranged inside a slot arranged in one of the aprons.
- the lower apron consists of two parts, the first part constituting a support apron supporting the displacement means 5, which support one or more flexible aprons on the surface of which are housed the pairs of measuring bars.
- the folding device comprises five displacement means 5, opposite which are arranged respectively five pairs of measuring bars 16, 16 '.
- All the operations of the folding cycle including in particular the work of the control device 9 for controlling the actuation of the displacement means 5 and of the devices for controlling the movement of the punch are carried out automatically until very precise bending angle imposed.
- the presses according to the invention have many advantages. Indeed, the combination of the displacement means 5 and the pairs of measuring bars associated with the control means 9 makes it possible to eliminate, on the one hand, the differences in bending angle due, for the same sheet, to one any of the deformations seen above, whether the deformations of the machine, the uprights, the upper or lower aprons, the die or the punch, or to the sheet thickness tolerances, and, on the other On the other hand, the differences in bending angle from one sheet to another, due to the differences in thickness, resistance and elasticity of the sheets.
- the presses according to the invention make it possible to remedy the drawbacks of asymmetric folding and those due to a non-parallel movement of the punch. In the latter case, the folding angle will be obtained constant over the entire length of the folding, even for thin sheets, provided that they are positioned so that they rest on at least two pairs of measuring bars .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH504/84A CH654761A5 (fr) | 1984-02-03 | 1984-02-03 | Presse-plieuse dont le dispositif de pliage permet un controle continu de l'angle de pliage de la piece a plier. |
CH504/84 | 1984-02-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0155228A1 true EP0155228A1 (de) | 1985-09-18 |
Family
ID=4188514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85810020A Withdrawn EP0155228A1 (de) | 1984-02-03 | 1985-01-22 | Plattenbiegemaschine, deren Biegemechanismus eine Überwachung des Biegewinkels gestattet |
Country Status (4)
Country | Link |
---|---|
US (1) | US4640113A (de) |
EP (1) | EP0155228A1 (de) |
JP (1) | JPS60180622A (de) |
CH (1) | CH654761A5 (de) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9213532U1 (de) * | 1992-10-07 | 1993-01-28 | Haberstock, Rolf, 7897 Küssaberg | Biegevorrichtung zum Biegen von Blechteilen |
GB2226515B (en) * | 1988-12-29 | 1993-06-02 | Amada Co Ltd | Sheet workpiece bending machine |
US5295384A (en) * | 1990-03-15 | 1994-03-22 | Lift Verkaufsgerate Gesellschaft M.B.H. | Sheet-metal bending device |
EP0594532A1 (de) * | 1992-10-20 | 1994-04-27 | Beyeler Machines S.A. | Vorrichtung zum Messen des Biegewinkels eines Bleches |
US5515706A (en) * | 1994-08-22 | 1996-05-14 | Paul; David R. | Angle bender & method |
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. |
WO1998056518A1 (en) * | 1997-06-13 | 1998-12-17 | Luciano Gasparini | Device to automatically adapt the bending pressure, proportionally to the working pressure of the cylinders of the upper cross-piece, particularly in a press-bending machine and a machine so obtained |
EP0940196A1 (de) * | 1996-10-29 | 1999-09-08 | Komatsu Ltd. | Biegewinkelkorrekturverfahren und so hergestellte biegepresse |
Families Citing this family (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4819467A (en) * | 1986-09-17 | 1989-04-11 | Cincinnati Incorporated | Adaptive control system for hydraulic press brake |
US4797831A (en) * | 1986-11-18 | 1989-01-10 | Cincinnati Incorporated | Apparatus for synchronizing cylinder position in a multiple cylinder hydraulic press brake |
US4864509A (en) * | 1987-09-29 | 1989-09-05 | The Boeing Company | Method and related apparatus for controlling the operation of a press brake |
US5067340A (en) * | 1988-05-05 | 1991-11-26 | Macgregor Donald C | Precision press brake |
US5062283A (en) * | 1988-07-19 | 1991-11-05 | Yamazaki Mazak Kabushiki Kaisha | Press brake and a workpiece measuring method in the press brake |
GB8822608D0 (en) * | 1988-09-27 | 1988-11-02 | Wilson Ian Technology | Leaf spring production |
DE59001381D1 (de) * | 1989-01-18 | 1993-06-17 | Rolf Haberstock | Gesenkvorrichtung. |
JPH087932Y2 (ja) * | 1989-07-31 | 1996-03-06 | 株式会社小松製作所 | 曲げ機械の工具位置制御装置 |
JPH087933Y2 (ja) * | 1989-11-24 | 1996-03-06 | 株式会社アマダ | 折曲げ機 |
JP2520368B2 (ja) * | 1993-07-30 | 1996-07-31 | 株式会社東洋工機 | 曲げ加工方法およびその装置 |
KR970701105A (ko) * | 1994-03-29 | 1997-03-17 | 안자키 사토루 | 금형추입량의 자동보정방법(automatic die driving amount correction method) |
WO1996001706A1 (fr) * | 1994-07-08 | 1996-01-25 | Amada Company, Limited | Procede de cintrage a l'aide d'une machine a cintrer, et machine a cintrer utilisee dans ce procede |
US5969973A (en) * | 1994-11-09 | 1999-10-19 | Amada Company, Ltd. | Intelligent system for generating and executing a sheet metal bending plan |
US5835684A (en) * | 1994-11-09 | 1998-11-10 | Amada Company, Ltd. | Method for planning/controlling robot motion |
US5761940A (en) * | 1994-11-09 | 1998-06-09 | Amada Company, Ltd. | Methods and apparatuses for backgaging and sensor-based control of bending operations |
WO1996014968A1 (en) * | 1994-11-09 | 1996-05-23 | Amada Company, Limited | Shear force sensing system |
JP4221061B2 (ja) | 1994-11-09 | 2009-02-12 | 株式会社アマダ | 板金曲げ計画の作成・実行用知能システム |
WO1998014286A1 (fr) * | 1996-10-03 | 1998-04-09 | Komatsu Ltd. | Procede de cintrage et dispositif de cintrage pour machine a cintrer |
IT1293174B1 (it) * | 1997-04-11 | 1999-02-12 | Luciano Gasparini | Procedimento di presso-piegatura della lamiera metallica con sistema di misurazione diretta comprendente una funzione di compensazione e |
CZ294461B6 (cs) * | 1997-06-20 | 2005-01-12 | Luciano Gasparini | Ohýbací lis |
US5966974A (en) * | 1998-05-19 | 1999-10-19 | Sds Usa, Inc. | Automatic learning apparatus for folding machine |
US6055737A (en) * | 1998-06-11 | 2000-05-02 | Sweaney; Scylvester L. | Quick mount angle measurement gauge |
SE518599C2 (sv) * | 1998-06-26 | 2002-10-29 | Pullmax Ursviken Ab | Anordning för vinkelmätning |
NL1012072C2 (nl) * | 1999-05-17 | 2000-11-20 | Cornelis Hendricus Liet | Werkwijze en inrichting voor het buigen van werkstukken. |
AU4785700A (en) * | 1999-05-17 | 2000-12-05 | Cornelis Hendricus Liet | Method and apparatus for bending workpieces |
FR2796320B1 (fr) * | 1999-07-13 | 2001-10-05 | Amada Europ Sa | Presse plieuse a precision amelioree |
KR100519521B1 (ko) * | 1999-10-07 | 2005-10-05 | 무라타 기카이 가부시키가이샤 | 굽힘기계 및 그 운전방법 |
JP4489916B2 (ja) * | 2000-07-31 | 2010-06-23 | 株式会社アマダ電子 | 曲げ加工機 |
JP4683698B2 (ja) * | 2000-09-06 | 2011-05-18 | 株式会社アマダ電子 | 曲げ加工方法及びその装置 |
JP4637396B2 (ja) * | 2001-04-12 | 2011-02-23 | 株式会社アミテック | 角度測定器 |
DE20203583U1 (de) * | 2002-03-06 | 2002-08-29 | Rasi Maschinenbau u. -handels-GmbH, 75428 Illingen | Vorrichtung zur Erfassung eines Richtungswinkels, insbesondere eines Biegewinkels, eines Werkstücks, insbesondere eines Biegeteils |
ITPR20030012A1 (it) * | 2003-02-18 | 2004-08-19 | Fim Spa | Tavola supplementare porta utensile per compensare |
JP4720433B2 (ja) * | 2005-10-31 | 2011-07-13 | トヨタ紡織株式会社 | 車両用暖房装置の取付構造 |
CN103995927B (zh) * | 2006-08-31 | 2017-01-04 | 新日铁住金株式会社 | 回弹对策位置特定方法以及回弹对策位置特定装置 |
ITMI20110977A1 (it) | 2011-05-30 | 2012-12-01 | Finn Power Italia S R L | Pressa piegatrice |
DK3147643T3 (en) * | 2015-09-28 | 2019-04-29 | Ssab Technology Ab | PROCEDURE AND COMPUTER PROGRAM PRODUCT |
CN106424228B (zh) * | 2016-11-02 | 2018-08-21 | 无锡先导智能装备股份有限公司 | 用于半片电池片焊接的焊带折弯机构 |
EP3839676A1 (de) | 2019-12-16 | 2021-06-23 | Bystronic Laser AG | Dickenausgleich in einem schneid- und biegeverfahren |
CN114393067B (zh) * | 2022-01-04 | 2023-12-22 | 歌尔科技有限公司 | 冲压机床的智能监测方法和计算机可读存储介质 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3440847A (en) * | 1964-10-14 | 1969-04-29 | Promecan Sisson Lehmann | Bending machine |
DE2044199A1 (en) * | 1970-09-07 | 1972-03-23 | Karl Mengele & Söhne Maschinenfabrik und Eisengießerei, 8870 Günzburg | Programme controlled sheet metal bending - using open tooling |
FR2119528A5 (de) * | 1970-12-25 | 1972-08-04 | Amada Co Ltd | |
FR2200064A1 (de) * | 1972-09-14 | 1974-04-19 | Piccini Giancarlo | |
FR2362722A1 (fr) * | 1976-08-27 | 1978-03-24 | Promecan Sisson Lehmann | Dispositif de controle de l'angle de pliage d'une tole ou similaire sur une presse plieuse |
FR2379046A1 (fr) * | 1977-02-01 | 1978-08-25 | Selecontrol Sas | Dispositif pour mesurer les angles de pliage dans des presses a plier la tole |
EP0025469A1 (de) * | 1979-09-17 | 1981-03-25 | Beyeler Machines S.A. | Verfahren und hydraulische Einrichtung zum Verstellen der Eindringtiefe des Stempels einer hydraulischen Abkantpresse |
GB2072551A (en) * | 1980-03-07 | 1981-10-07 | Hess J | Device for measuring the fold angle in a sheet metal bending press |
FR2509222A1 (fr) * | 1980-06-11 | 1983-01-14 | Ettore Alagna | Presse plieuse hydraulique avec systeme de compensation des deformations elastiques |
DE8234901U1 (de) * | 1982-12-11 | 1983-04-21 | Ehrt Maschinenbau GmbH, 5340 Bad Honnef | Vorrichtung zum biegen von metallprofilen |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA585664A (en) * | 1959-10-20 | A. Johnson Stanley | Die for use in blending flat metal stock and the like | |
DE1427344A1 (de) * | 1961-11-18 | 1968-11-28 | Harald Wirth | Vorrichtung zum Abwinkeln von Flachschienen |
US3156287A (en) * | 1961-12-12 | 1964-11-10 | Pines Engineering Co Inc | Control means for metal forming apparatus |
DE2418668A1 (de) * | 1974-04-18 | 1975-10-30 | Egon Evertz | Biegemaschine zum biegen von blechen und baendern |
US4408471A (en) * | 1980-10-29 | 1983-10-11 | Massachusetts Institute Of Technology | Press brake having spring-back compensating adaptive control |
JPS57202928A (en) * | 1981-06-08 | 1982-12-13 | Amada Co Ltd | Bender |
-
1984
- 1984-02-03 CH CH504/84A patent/CH654761A5/fr unknown
-
1985
- 1985-01-22 EP EP85810020A patent/EP0155228A1/de not_active Withdrawn
- 1985-02-04 US US06/697,870 patent/US4640113A/en not_active Expired - Fee Related
- 1985-02-04 JP JP60018803A patent/JPS60180622A/ja active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3440847A (en) * | 1964-10-14 | 1969-04-29 | Promecan Sisson Lehmann | Bending machine |
DE2044199A1 (en) * | 1970-09-07 | 1972-03-23 | Karl Mengele & Söhne Maschinenfabrik und Eisengießerei, 8870 Günzburg | Programme controlled sheet metal bending - using open tooling |
FR2119528A5 (de) * | 1970-12-25 | 1972-08-04 | Amada Co Ltd | |
FR2200064A1 (de) * | 1972-09-14 | 1974-04-19 | Piccini Giancarlo | |
FR2362722A1 (fr) * | 1976-08-27 | 1978-03-24 | Promecan Sisson Lehmann | Dispositif de controle de l'angle de pliage d'une tole ou similaire sur une presse plieuse |
FR2379046A1 (fr) * | 1977-02-01 | 1978-08-25 | Selecontrol Sas | Dispositif pour mesurer les angles de pliage dans des presses a plier la tole |
EP0025469A1 (de) * | 1979-09-17 | 1981-03-25 | Beyeler Machines S.A. | Verfahren und hydraulische Einrichtung zum Verstellen der Eindringtiefe des Stempels einer hydraulischen Abkantpresse |
GB2072551A (en) * | 1980-03-07 | 1981-10-07 | Hess J | Device for measuring the fold angle in a sheet metal bending press |
FR2509222A1 (fr) * | 1980-06-11 | 1983-01-14 | Ettore Alagna | Presse plieuse hydraulique avec systeme de compensation des deformations elastiques |
DE8234901U1 (de) * | 1982-12-11 | 1983-04-21 | Ehrt Maschinenbau GmbH, 5340 Bad Honnef | Vorrichtung zum biegen von metallprofilen |
Non-Patent Citations (1)
Title |
---|
PATENTS ABSTRACTS OF JAPAN, vol. 6, no. 124 (M141)[1002], 9 juillet 1982; & JP - A - 57 50217 (AMADA K.K.) 24-03-1982 * |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2226515B (en) * | 1988-12-29 | 1993-06-02 | Amada Co Ltd | Sheet workpiece bending machine |
US5295384A (en) * | 1990-03-15 | 1994-03-22 | Lift Verkaufsgerate Gesellschaft M.B.H. | Sheet-metal bending device |
DE9213532U1 (de) * | 1992-10-07 | 1993-01-28 | Haberstock, Rolf, 7897 Küssaberg | Biegevorrichtung zum Biegen von Blechteilen |
EP0594532A1 (de) * | 1992-10-20 | 1994-04-27 | Beyeler Machines S.A. | Vorrichtung zum Messen des Biegewinkels eines Bleches |
US5375340A (en) * | 1992-10-20 | 1994-12-27 | Beyeler Raskin S.A. | Measuring device for the bend angle of sheet-metal |
US5515706A (en) * | 1994-08-22 | 1996-05-14 | Paul; David R. | Angle bender & method |
EP0940196A1 (de) * | 1996-10-29 | 1999-09-08 | Komatsu Ltd. | Biegewinkelkorrekturverfahren und so hergestellte biegepresse |
EP0940196A4 (de) * | 1996-10-29 | 2000-03-01 | Komatsu Mfg Co Ltd | Biegewinkelkorrekturverfahren und so hergestellte biegepresse |
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. |
WO1998056518A1 (en) * | 1997-06-13 | 1998-12-17 | Luciano Gasparini | Device to automatically adapt the bending pressure, proportionally to the working pressure of the cylinders of the upper cross-piece, particularly in a press-bending machine and a machine so obtained |
Also Published As
Publication number | Publication date |
---|---|
US4640113A (en) | 1987-02-03 |
CH654761A5 (fr) | 1986-03-14 |
JPS60180622A (ja) | 1985-09-14 |
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