EP1396293B1 - Befestigungssystem eines Biegewerkzeuges - Google Patents

Befestigungssystem eines Biegewerkzeuges Download PDF

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Publication number
EP1396293B1
EP1396293B1 EP03292107A EP03292107A EP1396293B1 EP 1396293 B1 EP1396293 B1 EP 1396293B1 EP 03292107 A EP03292107 A EP 03292107A EP 03292107 A EP03292107 A EP 03292107A EP 1396293 B1 EP1396293 B1 EP 1396293B1
Authority
EP
European Patent Office
Prior art keywords
tool
fixing
clamping
groove
blade
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.)
Expired - Fee Related
Application number
EP03292107A
Other languages
English (en)
French (fr)
Other versions
EP1396293A1 (de
Inventor
Eric Gascoin
Jean Louis Fourmy
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.)
Amada Europe SA
Original Assignee
Amada Europe SA
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 Amada Europe SA filed Critical Amada Europe SA
Publication of EP1396293A1 publication Critical patent/EP1396293A1/de
Application granted granted Critical
Publication of EP1396293B1 publication Critical patent/EP1396293B1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B21D5/0236—Tool clamping
    • 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 a fastening system for mounting and dismounting a folding tool on the upper apron of a press brake.
  • Bending presses are used for forming sheet materials and comprise for this purpose one or more tools commonly called punches fixed on the mobile deck of the machine by a fastening system or tool holder and, with regard to these tools, one or several V-shaped dies attached to the upper edge of the lower apron of the press brake.
  • the sheet By arranging the sheet to be formed on the die and causing the punch to be lowered by a predetermined amount, the sheet is bent to the desired angle.
  • the tool used is different. It is therefore necessary to be able to disassemble the tool of the upper deck, that is to say the fastening system to replace it with another tool more suitable.
  • the fastening of the tool which comprises a fixing heel is carried out by means of a pivotally mounted flange which can occupy a first clamping position of the tool or a second position which allows the change to take place. of the tool.
  • the folding tools are relatively heavy. It is therefore very desirable to maintain the tool on the clamping flange even when it is in the loosened position in order to avoid any risk of falling of the tool on the matrix of the lower deck disposed opposite this tool.
  • FIGS. 1A and 1B appended there is shown the embodiment of the fastening system of the tool described in the patent application mentioned above.
  • the movable upper deck 10 and the tool spacer 12 fixed by any suitable means on the upper deck 10.
  • the tool spacer comprises a lower part 14 of reduced thickness and defined by two shoulders 16 and 18.
  • the fastening system also comprises a clamping flange 20 which is pivotally mounted about a horizontal axis parallel to the length of the deck.
  • the pivot axis can be defined by screws 22 with swiveling head cooperating with corresponding holes 24 machined in the middle portion 26 of the flange 20.
  • pushers 28 whose one end acts on the upper end 30 of the flange 20 and whose second end cooperates with a rotary cam 32 mounted in the tool spacer 12 in the longitudinal direction of the apron .
  • the cam 32 in the position shown on the Figure 1A , causes the separation of the upper part 30 of the flange, which corresponds to the clamping position.
  • the cam 32 in its position represented on the Figure 1B , the cam 32 no longer acts on the pushers 30 and, under the effect of an elastic system, the flange 20 assumes the mounting position-disassembly of the tool shown on the Figure 1B .
  • the tool 34 comprises at its upper part a fixing heel 36 which has a first fixing face 36a, a second fixing face 36b parallel to the first fixing face and a retaining groove 38.
  • the flange comprises a spoiler retaining means 44 which can penetrate into the groove 38 of the heel of the tool 34.
  • the spoiler 44 plays no role.
  • the lower end 42 of the flange is spaced apart to occupy the position of assembly-disassembly, the spoiler 44 remains partially engaged in the groove 38, which ensures the maintenance in the vertical direction of the tool 34 relative to the tool spacer 12.
  • the tool can be placed between the lower part of the tool spacer and the flange only laterally, that is to say by the ends of the flange, when the operator wants to replace a tool that is mounted for example in the central portion of the flange, it is necessary that it proceeds prior to disassembly of the tools disposed between the tool actually to change and one end of the flange.
  • An object of the present invention is to provide a tool attachment system on the upper apron of a press brake which allows the mounting and the front dismounting of the tools on the upper deck, which effectively allows to change only the desired tool.
  • Another object of the invention is to provide a fastening system of the tool wherein the tool retaining means are simple and inexpensive to manufacture and easy to mount on the press.
  • the fastening system of a folding tool comprises a clamping body having a first clamping surface adapted to cooperating with one of the attachment surfaces of the tool and a clamping flange of the pivotally mounted tool comprising a second clamping surface, said clamp being able to assume a first clamping position of the tool in which the fastening surfaces of the tool tool are clamped between the first and second clamping surfaces and a second mounting / disassembling position of the tool in which its clamping surface is spaced apart from the first clamping surface of the clamping body.
  • This fastening system is characterized in that it further comprises a retaining piece of the tool comprising a plurality of elastically deformable blades parallel to each other and arranged in the same plane, each blade comprising a first end secured to the clamping body. , a running part arranged in such a way that it is applied against the first attachment face of the tool and a second end comprising at least a first part angular towards the tool relative to the current part and a second part angulated in opposite direction so that said angulated portions, when said blade is at rest, are held elastically in the groove of the tool and that, when the flange is in the loading / unloading position, the current portion of the blade can deform elastically to allow introduction or extraction of said angular portions of the elastically deformable blades in or out of said groove.
  • the cost of manufacturing and mounting the retaining piece is reduced since it is preferably a simple sheet which is cut and folded to obtain the different elastic blades with their two angled parts. able to penetrate into the groove of the tool.
  • the current part of the elastic blade bears on the attachment surface of the tool and the first angulated portion is in contact with the chamfer which connects the attachment surface of the tool. the tool and the upper wall of the groove.
  • each elastically deformable blade further comprises, beyond said second angulated portion, a connecting portion and an alignment portion disposed at the end of the connecting portion, said alignment portion extending substantially parallel to the current portion of the blade facing at least said second angled portion, said alignment portion being adapted to penetrate into an alignment groove formed in the lower face of the flange and parallel to the axis of pivoting thereof.
  • said alignment groove comprises an alignment wall which cooperates with the alignment portion of the elastically deformable blades when the flange is in its loading / unloading position.
  • the alignment portions of the elastically deformable blades can be effectively all aligned and so are the angular portions of the flanges. elastically deformable blades, which greatly facilitates the introduction or extraction of the folding tool.
  • FIG. 2 we will describe the entire attachment system of the tool.
  • the tool spacer 12 with its lower portion 14 of reduced width defined by the shoulders 16 and 18, the lower portion 14 defining one of the clamping faces 14a.
  • the flange 20, 20 'clamping with its upper portion 30 and lower end 42.
  • FIG. 2 schematically shows the pivot axis 22, 22 'of the clamps 20, 20' and actuators 28, 32 for controlling the pivoting of each flange about the axes 22, 22 '.
  • the embodiment of the axes 22, 22 'and flange pivot control means can be arbitrary, for example of the type shown in the drawings.
  • Figures 1A and 1B can be arbitrary, for example of the type shown in the drawings.
  • the folding tool 34 has also been shown with its fixing heel 36 and its retaining groove 38.
  • the fixing heel 36 has two fixing faces 36a and 36b capable of cooperating with the clamping face 14a of the spacer tool and the clamping face of the flange as will be explained.
  • the lower part of the flange 42 in its face facing the tool spacer comprises two longitudinal rod-shaped inserts 50 and 52 which define a clamping surface fulfilling the same function as the surface of clamping 40 of the flange 20 shown in FIG. Figure 1A .
  • the flange 20 can pivot between a first fastening position in which the heel 36 of the tool is clamped between the extension 14 of the tool spacer and the clamping surface formed by the rods 50 and 52 and a second position of the flange 20 of assembly / disassembly in which the clamping surfaces 50, 52 are spaced apart from the heel 36 of the folding tool.
  • the retention of the folding tool is obtained by a retainer with the general reference 54 and shown in more detail on the figure 5 .
  • This retention member 54 is preferably constituted by an elastically deformable metal plate 56 in which are defined elastically deformable blades 58. Each elastically deformable blade 58 is separated from the adjacent blades by a slot 60.
  • each elastically deformable blade is determined in relation to the lengths of the folding tools themselves, according to the length of the folding machine, so that each blade 58 is applied only on the heel of a single folding tool.
  • each blade 58 has a first attachment end 58a secured by any suitable means 62 to the tool spacer 12, a running portion 58b and a retaining end 58c.
  • first attachment end 58a secured by any suitable means 62 to the tool spacer 12
  • running portion 58b secured by any suitable means 62 to the tool spacer 12
  • retaining end 58c is disposed in such a way that it can penetrate into the groove 38 of the heel of the tool when it is in the attachment position on the tool spacer 12.
  • the retaining portion 58c of each blade 58 has a first angular portion 64 which is for example an angle of the order of 45 ° relative to the direction of the running portion 58b of the blade. The angulation is such that this portion can enter the groove 38 of the heel of the folding tool.
  • the retaining portion also comprises a second angled portion 66 in the opposite direction, so that the set of angled portions 64 and 66 form an open V of vertex A.
  • the fold 68 which connects the flat current portion 58b to the first angled portion 64 is defined such that, at rest, the chamfer 70 which connects the attachment face 36a of the heel of the tool to the upper wall 72 of the groove 38, is supported on the first end of the angled portion 64.
  • the angled portions 64, 66 are defined such that the angled portions can enter fully into the groove 38.
  • each blade 58 further comprises an alignment portion 76 substantially parallel to the running portion 58b of the blade and connected to the end of the second angled portion 66 by a substantially horizontal connecting portion 78.
  • the lower end 42 of the flanges 20, 20 ' is provided with a longitudinal groove 80 formed in the lower face 20a of the flange and extending along the length of the flange.
  • the alignment groove 80 is adapted to receive the end 76a of the alignment portion 76.
  • the width l 'of the alignment groove 80 is such that, when the flange is in the clamping position, the portion of the alignment portion 80 alignment 76 is not in contact with any of the vertical walls 80a, 80b of the alignment groove and that, when the flange is in the assembly / disassembly position shown in FIG. figure 4 the end of the alignment portion 76 is applied against the vertical wall 80a of the groove 80, the wall closest to the heel of the tool.
  • the stiffness of the blade 58 is sufficient so that its running portion 58b is held against the attachment face 36a of the heel of the tool and that the angled portions 64 and 66 remain engaged in the groove 38 of the heel of the tool. In other words, the stiffness of the blade 58 is sufficient to compensate for the weight of the tool.
  • this position of the flange 20 is obtained effective retention of the tool.
  • the upper chamfer 70 of the groove 38 of the tool acts on the beginning of the upper angulated portion 64 causing by elastic deformation the gap of the elastic blade and the progressive exit of the angulated portions out of the groove 38. This result is obtained of course thanks to the angulation of the portion 64.
  • the chamfer 70 comes into contact with the apex A of the two angular portions, the effect no longer exists and the tool can be removed.
  • the end 76a of this portion enters the longitudinal groove 80 formed in the underside of the flange. As has already been briefly explained, this end 76a does not come into contact with any of the vertical faces 80a and 80b of the groove when the flange is in its clamping position shown in FIG. figure 3 . On the other hand, when the flange is brought into its assembly / disassembly position shown on the figure 4 the end 76a of the alignment portion 76 engages the wall 80a of the groove 80. Thus, all the alignment ends 76 of the blades 58 are aligned with the position of the wall 80a. As a result, the vertices A angular portions 64, 66 of each blade are also aligned, which facilitates the introduction or extraction of the tool since all these A vertices are aligned.
  • FIG. 5 which represents a preferred embodiment of the retaining member 54, there is shown in the zone Z the portions of the elastically deformable blades 58 which deform elastically when insertion or extraction of the angled portions 64 and 66 of these blades in the groove 38 of the heel of the folding tool 34.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Workshop Equipment, Work Benches, Supports, Or Storage Means (AREA)
  • Clamps And Clips (AREA)

Claims (5)

  1. System zum Befestigen eines Biegewerkzeugs (34), wobei das Werkzeug zwei parallele Flächen zur Klemmbefestigung sowie eine Haltenut (38) aufweist, wobei das System einen Klemmkörper (14), der eine erste Klemmfläche aufweist, die geeignet ist, mit einer der Befestigungsflächen des Werkzeugs zusammenzuwirken, sowie einen Flansch (20) zum Festklemmen des Werkzeugs umfaßt, der schwenkbar angebracht ist und eine zweite Klemmfläche aufweist, wobei der Flansch eine erste Position zum Festklemmen des Werkzeugs, in der die Befestigungsflächen des Werkzeugs zwischen der ersten und der zweiten Klemmfläche festgeklemmt sind, sowie eine zweite Position zum Montieren/Demontieren des Werkzeugs einnehmen kann, in der seine Klemmfläche von der ersten Klemmfläche des Körpers entfernt ist, wobei das System dadurch gekennzeichnet ist, daß es ferner ein Organ (54) zum Halten des Werkzeugs umfaßt, das eine Vielzahl von parallel zueinander verlaufenden und in einer Ebene angeordneten elastisch verformbaren Zungen (58) aufweist, wobei jede Zunge ein mit dem Klemmkörper fest verbundenes erstes Ende (58a), einen durchgehenden Teil (58b), welcher derart angeordnet ist, daß er in Ruhe an der ersten Befestigungsfläche des Werkzeugs anliegt, sowie ein zweites Ende (58c) aufweist, das wenigstens einen gegenüber dem durchgehenden Teil in Richtung des Werkzeugs abgewinkelten ersten Teil (64) und einen in entgegengesetzter Richtung abgewinkelten zweiten Teil (66) derart aufweist, daß die abgewinkelten Teile dann, wenn die Zunge in Ruhe ist, in der Nut (38) des Werkzeugs (34) elastisch gehalten werden, und daß dann, wenn der Flansch sich in der Lade-/Entladeposition befindet, der durchgehende Teil der Zunge sich elastisch verformen kann, um das Einführen oder Herausziehen der abgewinkelten Teile (64, 66) der elastisch verformbaren Zungen (58) in die oder aus der Nut (38) zu ermöglichen.
  2. Befestigungssystem nach Anspruch 1, dadurch gekennzeichnet, daß dann, wenn sich ein Werkzeug (34) in der Befestigungsposition befindet, der durchgehende Teil (58b) der elastischen Zunge (58) an der Befestigungsfläche des Werkzeugs (34) in Anlage ist, und daß der erste abgewinkelte Teil (64) mit der Fase (70), welche die Befestigungsfläche des Werkzeugs (36a) und die Oberseite (72) der Nut verbindet, in Kontakt ist.
  3. Befestigungssystem nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß jede elastisch verformbare Zunge (58) ferner jenseits des zweiten abgewinkelten Teils (66) einen Verbindungsteil (78) und einen am Ende des Verbindungsteils angeordneten Ausrichtungsteil (76) aufweist, wobei der Ausrichtungsteil (76) sich im wesentlichen parallel zu dem durchgehenden Teil der Zunge (58) gegenüber wenigstens dem zweiten abgewinkelten Teil (66) erstreckt, wobei der Ausrichtungsteil geeignet ist, in eine in der Unterseite (20a) des Flansches (20) ausgebildete und zu dessen Schwenkachse parallel verlaufende Ausrichtungsnut (80) einzudringen.
  4. Befestigungssystem nach Anspruch 3, dadurch gekennzeichnet, daß die Ausrichtungsnut (80) eine Ausrichtungswand (80a) aufweist, die mit dem Ausrichtungsteil (76) der elastisch verformbaren Zungen (58) zusammenwirkt, wenn der Flansch (20) sich in seiner Lade-/Entladeposition befindet.
  5. Befestigungssystem nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Halteteil (54) von einem elastisch verformbaren Blech (56) gebildet ist, in dem die Zungen (58) durch parallele Schlitze (60) voneinander getrennt sind.
EP03292107A 2002-09-09 2003-08-27 Befestigungssystem eines Biegewerkzeuges Expired - Fee Related EP1396293B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0211120 2002-09-09
FR0211120A FR2844213B1 (fr) 2002-09-09 2002-09-09 Systeme de peigne pour intermediaires

Publications (2)

Publication Number Publication Date
EP1396293A1 EP1396293A1 (de) 2004-03-10
EP1396293B1 true EP1396293B1 (de) 2008-10-08

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ID=31503137

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03292107A Expired - Fee Related EP1396293B1 (de) 2002-09-09 2003-08-27 Befestigungssystem eines Biegewerkzeuges

Country Status (9)

Country Link
US (1) US7343774B2 (de)
EP (1) EP1396293B1 (de)
JP (1) JP4566532B2 (de)
CN (1) CN1304134C (de)
CA (1) CA2439664C (de)
DE (1) DE60323913D1 (de)
FR (1) FR2844213B1 (de)
RU (1) RU2325242C2 (de)
TW (1) TWI274659B (de)

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FR2851488B1 (fr) * 2003-02-21 2005-05-20 Amada Europ Sa Systeme de fixation pour le montage et le demontage d'un outil de pliage
DE102004022643A1 (de) * 2004-05-07 2005-12-15 Hans Schröder Maschinenbau GmbH Schwenkbiegemaschine
US7596983B2 (en) * 2005-07-11 2009-10-06 Wilson Tool International Inc. Press brake clamp incorporating tool-seating mechanism
PL1862233T3 (pl) * 2006-06-01 2011-07-29 Wila Bv Narzędzie z automatycznym zatrzaskiem zabezpieczającym
RU2663018C2 (ru) * 2014-02-10 2018-08-01 Сальваньини Италия С.П.А. Гибочная машина для листового металла
US9555456B2 (en) 2014-04-26 2017-01-31 Wilson Tool International Inc. Dynamic clamp and tool holders therefor
US10300518B2 (en) 2015-05-27 2019-05-28 Wilson Tool International Inc. Tool holders usable with tooling having different tang styles and/or configured with mechanically-actuated clamp assembly
US10189067B2 (en) 2015-05-27 2019-01-29 Wilson Tool International Inc. Tool holders usable with tooling having different tang styles and/or configured with mechanically-actuated clamp assembly
CN105215168A (zh) * 2015-10-12 2016-01-06 蒙城县智扬门业有限公司 一种弯刀式板件弯折模具
JP6251771B2 (ja) * 2016-04-19 2017-12-20 株式会社アマダホールディングス 金型ホルダ装置
US9962749B2 (en) * 2016-09-23 2018-05-08 Mate Precision Tooling, Inc. Press brake tool safety latch mechanism
AT520943B1 (de) * 2018-02-21 2019-09-15 Trumpf Maschinen Austria Gmbh & Co Kg Fertigungsanlage mit Werkzeugwechseleinheit und Klemmbacke sowie Verfahren zum Werkzeugwechsel
US11033944B2 (en) * 2018-09-30 2021-06-15 Wilson Tool International Inc. Tool holders usable with tooling having different tang styles, and seating/securing components of such holders

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US4572564A (en) * 1984-07-12 1986-02-25 General Electric Company Adaptive gripping device
US4752063A (en) * 1987-03-16 1988-06-21 West Ventures Enterprises, Inc. Flexible element vise attachment
NL8802402A (nl) * 1988-09-29 1990-04-17 Wila Maschf Bv Kleminrichting, bijv. voor het bovengereedschap van een kantpers.
JPH0813379B2 (ja) * 1992-05-15 1996-02-14 株式会社アマダメトレックス プレスブレーキ用金型ホルダ
CN2303695Y (zh) * 1994-06-30 1999-01-13 阿玛达美都丽股份有限公司 用于压弯机的上部工具
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IT1311880B1 (it) * 1999-11-30 2002-03-19 Luciano Gasparini Dispositivo per il supporto ed il bloccaggio con funzione di sicurezzadi almeno un utensile intercambiabile, particolarmente in una macchina
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US6953188B2 (en) * 2003-08-08 2005-10-11 Rain Mountain Llc Flexible jaw universal vise

Also Published As

Publication number Publication date
US20040103710A1 (en) 2004-06-03
US7343774B2 (en) 2008-03-18
CA2439664C (en) 2011-04-05
JP2004261866A (ja) 2004-09-24
EP1396293A1 (de) 2004-03-10
JP4566532B2 (ja) 2010-10-20
TW200412288A (en) 2004-07-16
CA2439664A1 (en) 2004-03-09
TWI274659B (en) 2007-03-01
CN1304134C (zh) 2007-03-14
FR2844213B1 (fr) 2004-11-26
DE60323913D1 (de) 2008-11-20
RU2003127823A (ru) 2005-04-10
CN1490098A (zh) 2004-04-21
RU2325242C2 (ru) 2008-05-27
FR2844213A1 (fr) 2004-03-12

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