EP1449599A1 - Befestigungseinrichtung zum Montieren und Entfernen eines Biegewerkzeugs - Google Patents

Befestigungseinrichtung zum Montieren und Entfernen eines Biegewerkzeugs Download PDF

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Publication number
EP1449599A1
EP1449599A1 EP04290456A EP04290456A EP1449599A1 EP 1449599 A1 EP1449599 A1 EP 1449599A1 EP 04290456 A EP04290456 A EP 04290456A EP 04290456 A EP04290456 A EP 04290456A EP 1449599 A1 EP1449599 A1 EP 1449599A1
Authority
EP
European Patent Office
Prior art keywords
tool
flange
clamping
branch
fastening system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04290456A
Other languages
English (en)
French (fr)
Other versions
EP1449599B1 (de
Inventor
Eric C. Gascoin
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 EP1449599A1 publication Critical patent/EP1449599A1/de
Application granted granted Critical
Publication of EP1449599B1 publication Critical patent/EP1449599B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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 fixing system for the assembly and disassembly of a folding tool on the upper deck of a Press brake.
  • Press brakes are used for forming sheet materials and for this purpose include one or more tools commonly called punches attached to the movable deck of the machine by a fastening system or tool holder and, opposite these tools, a or more V-shaped dies fixed on the upper edge of the deck bottom of the press brake.
  • the sheet to be formed on the matrix By arranging the sheet to be formed on the matrix and causing lowering the punch by a predetermined amount, the bending the sheet metal at the desired angle.
  • the tool used is different. he it is therefore necessary to be able to disassemble the tool from the upper apron, i.e. of the fixing system to replace it with another more adapted.
  • the attachment of the tool which comprises a fixing heel is produced using a pivotally mounted flange which can occupy a first tool clamping position or a second spread position allowing the tool to be changed.
  • FIGs 1A and 1B there is shown the mode of realization of the tool fixing system described in the request for patent mentioned above.
  • the apron is shown movable upper 10 and the tool spacer 12 fixed by any means suitable on the upper apron 10.
  • the tool spacer has a lower part 14 of reduced thickness, defined by two shoulders 16 and 18.
  • the fastening system also includes a flange clamp 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 part 26 of the flange 20.
  • the cam 32 in the position shown in Figure 1A, causes the spacing of the part upper 30 of the flange, which corresponds to the clamping position.
  • the cam 32 in its position shown in Figure 1B, the cam 32 does not act more on the pushers 28 and, under the effect of an elastic system, the flange 20 takes the mounting-dismounting position of the tool shown on the Figure 1B.
  • the tool 34 has at its upper part a fixing heel 36 which has a first fixing surface 36a, a second attachment surface 36b parallel to the first attachment surface and a retaining groove 38, located below the second surface of attachment 36b and having upper edges 38a and lower 38b.
  • the flange has a spoiler-shaped retaining means 44 which can penetrate the groove 38 in the heel of the tool 34.
  • the spoiler 44 plays no role.
  • the spoiler 44 remains partially engaged in groove 38, as shown in FIG. 1B, this which ensures the maintenance in the vertical direction of the tool 34 relative to tool spacer 12.
  • the system includes a metal strip elastically deformable pivotally mounted around a horizontal axis parallel to the length of the bulkhead on the clamp and which has a first surface facing the clamp and a second surface opposite the lower part of the tool spacer.
  • a piece rigid is fixed on the second surface, in the lower part of the strip metallic. This rigid part has in its lower part, a inclined surface, approaching the metal strip.
  • the metal strip is separated from the flange and the upper edge of the rigid part cooperates with a shoulder practiced on the heel of attachment of the tool so as to prevent the fall of the tool.
  • the tool fixing heel is tightened on one side, by the lower part of the tool spacer and on the other, by the rigid piece which transfers the force exerted on it by the clamp.
  • the assembly constituted by the metal strip and by the piece rigid is therefore subjected to very high compressive stresses, which requires the use of materials to make the different parts, and fixing means for securing the parts together, capable of bear such constraints.
  • the metal strip elastically deformable is subject to compressive stresses high and regularly repeated which make him gradually lose his elasticity properties, which affects the proper functioning of the system.
  • An object of the present invention is to provide on the one hand, a tool attachment system on the upper deck of a press brake which retains the principle of fixing the tool by clamping between a surface of clamping present on the spacer on the one hand and a clamping surface present on the flange on the other hand, i.e. without intermediate element participating in the tightening, located between the flange and the tool, and on the other hand, a system that allows the front mounting and dismounting of tools on the upper deck, so that only the desired tool can be changed.
  • the fixing system a folding tool, said tool comprising two fixing surfaces by clamp and a retaining groove located below one of the attachment and having upper and lower edges, includes a body clamp having a first clamping surface capable of cooperating with one of the attachment surfaces of the tool and a clamp the pivotally mounted tool comprising a second clamping surface, said flange being able to assume a first tool clamping position in which the attachment surfaces of the tool are clamped between the first and second clamping surfaces and a second position of assembly / disassembly of the tool in which its second surface clamping distance from the first clamping surface of the body Tightening.
  • the retaining member of the fixing system comprises two elastically deformable arms which limit the distance between the flange and the clamping face of the spacer during assembly / disassembly of the tool.
  • the end of the second branch of the retaining member is capable of remaining engaged in said groove in order to hold the tool and prevent it from falling onto the die bottom of the press brake.
  • the user can remove the tool by pulling it towards it so as to do so swing.
  • the assembly constituted by the two branches is liable to deform so that the end of the second branch, which until now retained the tool, can disengage from said retaining groove.
  • the end of said second branch forms an angle with the part current of it and / or the upper edge of the retaining groove is chamfered. Said end can thus more easily disengage from said groove.
  • said retaining member when the flange is brought into its position tightening, said retaining member is capable of exerting on the tool a vertical component force to bring the tool into abutment against the tool spacer. This allows the tool to be positioned correctly before to tighten. The user no longer has to perform this task and the risk of accident is thereby reduced.
  • the end of said second branch is likely to be in abutment against the upper edge of said groove retained whatever the position of the flange. This keeps the tool when the flange is loose and exert a force on the tool when Tightening.
  • the end of said first branch of the retaining member is integral with the external surface of the flange, opposite to said second clamping surface.
  • Such an arrangement facilitates the deformation of said first branch during tightening and / or during assembly / disassembly of the tool.
  • the clamp of the fixing system comprises on its inner surface, that is to say the surface of the flange opposite the tool spacer, a groove.
  • This groove extends in the direction of the pivot axis of the flange and is suitable for receive the end of the second branch when disassembling the tool, when it rotates. This allows the second branch to be retained and thus avoiding any unnecessary deformation of the retaining member during tool removal. This also makes it possible to limit the spacing of the flange relative to the clamping face of the spacer when assembly / disassembly of the tool.
  • a device makes it possible to set up or the front removal of a tool on the upper apron, but does not prevent proceed with side mounting / dismounting.
  • the user slides the tool between the clamping surface of the tool spacer and the retained, so that the ends of said second branches can enter said retaining groove.
  • Repeated use of fastening system can create a slight offset in height of said ends relative to each other, which is a nuisance when side mounting of the tool.
  • the end of each second branch has an upper edge of rounded shape, so that the tool can slide easily from a branch to the other when the latter are not all at the same height.
  • the shoulders 16 and 18 which define the lower portion 14 of the spacer 12 are similarly dimension and two pushers 28 are provided, so that two flanges can be mounted on either side of the spacer 12. This allows the user to assemble the tool 34 whatever its position relative to the system.
  • FIG. 2 also shows the folding tool 34 with its fixing heel 36 and its retaining groove 38 having a upper edge 38a and a lower edge 38b.
  • the fixing heel 36 has two fixing surfaces 36a and 36b able to cooperate respectively with the clamping surface 14a of the tool spacer and the clamping surface of the flange 20.
  • Said groove 38 is located under the fixing surface 36b able to cooperate with the clamping surface of the flange 20.
  • the lower part of the flange 20 in its inner face facing the tool spacer comprises an insert which protrudes from the interior surface 43 and which defines a surface clamp 40 fulfilling the same function as the clamping surface of the flange shown in Figure 1A.
  • the flange 20 can pivot between a first fixing position in which the heel 36 of the tool is clamped between the clamping surface 14a of the extension 14 of the tool spacer and the clamping surface 40 of the flange 20, and a second position of the flange 20 for mounting / dismounting the folding tool 34 in which the surface clamp 40 is spaced from the heel 36 of the tool.
  • the retention of the folding tool is obtained by a retaining member having the general reference 54 and shown more in detail in FIG. 5.
  • This retaining member 54 consists, of preferably by an elastically deformable sheet sheet 56 in which are defined elastically deformable blades 58.
  • the blades elastically deformable 58 are substantially identical and aligned between them, and are separated from each other by slits substantially parallel 60.
  • the end of each blade 58 intended to penetrate into the groove 38 of the tool 34 preferably has a shape rounded.
  • each elastically deformable blade is determined in relation to the lengths of the folding tools themselves, depending on the length of the folding machine, so that each blade 58 is only applied to the heel of a single folding tool.
  • each blade 58 comprises: a first elastically deformable branch 58a of which the end 59 which is formed by the unsplit part of the sheet elastically deformable, is fixed by any suitable means on the outer surface 41 of the flange 20, opposite the clamping surface 40; an angular part 58b and; a second branch 58c elastically deformable, directed upwards and comprising an end 58d forming an angle ⁇ with the current part of the branch, so that this end 58d is substantially parallel to the bottom of groove 38 when the second branch 58c is engaged there.
  • the first elastically deformable branch 58a contributes to a vertical component force is exerted on the tool so that it comes into abutment against the lower part 14 of the tool spacer 12, because the end 58d of the second branch 58c comes to push on the part upper 38a of the groove 38.
  • the tool 34 is thus positioned suitably before tightening, as shown in figure 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Clamps And Clips (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Handcart (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
EP04290456A 2003-02-21 2004-02-20 Befestigungseinrichtung zum Montieren und Entfernen eines Biegewerkzeugs Expired - Lifetime EP1449599B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0302187A FR2851488B1 (fr) 2003-02-21 2003-02-21 Systeme de fixation pour le montage et le demontage d'un outil de pliage
FR0302187 2003-02-21

Publications (2)

Publication Number Publication Date
EP1449599A1 true EP1449599A1 (de) 2004-08-25
EP1449599B1 EP1449599B1 (de) 2006-07-05

Family

ID=32732046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04290456A Expired - Lifetime EP1449599B1 (de) 2003-02-21 2004-02-20 Befestigungseinrichtung zum Montieren und Entfernen eines Biegewerkzeugs

Country Status (8)

Country Link
US (1) US7096708B2 (de)
EP (1) EP1449599B1 (de)
CN (1) CN1329138C (de)
AT (1) ATE332197T1 (de)
DE (1) DE602004001408T2 (de)
FR (1) FR2851488B1 (de)
RU (1) RU2338613C2 (de)
TW (1) TWI273932B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1884298A1 (de) * 2006-08-04 2008-02-06 Teda S.R.L Vorrichtung zum Verriegeln eines Werkzeugs an einer Werkzeugmaschine, insbesondere an einer Biegepresse
CN101543863B (zh) * 2008-03-25 2010-12-08 鸿富锦精密工业（深圳）有限公司 连接装置
WO2011141774A1 (en) * 2010-05-13 2011-11-17 Andrea Argentin Fixing device for a tool to the cursor of a bending-press
ITMI20120374A1 (it) * 2012-03-09 2013-09-10 T E D A S R L Dispositivo di bloccaggio, particolarmente per matrici di presse piegatrici.
WO2015164483A1 (en) * 2014-04-26 2015-10-29 Wilson Tool International Inc. Dynamic clamp and tool holders therefor
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
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

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7296457B2 (en) * 2004-06-25 2007-11-20 Wilson Tool International Inc. Thermally-actuated press brake tool holder technology
US7308817B2 (en) * 2005-02-08 2007-12-18 Wilson Tool International Inc. Push plate tool holder for press brakes
US7721586B2 (en) * 2005-02-08 2010-05-25 Wilson Tool International Inc. Press brake tool seating technology
WO2006135835A2 (en) * 2005-06-10 2006-12-21 Wilson Tool International Inc. Press brake tool incorporating seating and/or locating mechanism
US7596983B2 (en) * 2005-07-11 2009-10-06 Wilson Tool International Inc. Press brake clamp incorporating tool-seating mechanism
US9782818B2 (en) * 2011-06-08 2017-10-10 Wilson Tool International Inc. Die shoe assembly with bearing surface mechanism, and die for use therewith
JP6292567B2 (ja) * 2013-10-29 2018-03-14 有限会社ティワイアソシエイツ 型取付装置
US10328480B2 (en) * 2014-06-03 2019-06-25 Amada Holdings Co., Ltd. Clamp apparatus
US9962749B2 (en) * 2016-09-23 2018-05-08 Mate Precision Tooling, Inc. Press brake tool safety latch mechanism
IT201700052500A1 (it) * 2017-05-15 2018-11-15 Salvagnini Italia Spa Macchina piegatrice per lamiere metalliche
IT201900006656A1 (it) 2019-05-08 2020-11-08 Salvagnini Italia Spa Macchina piegatrice per lamiere metalliche
IT202200015465A1 (it) * 2022-07-22 2024-01-22 Rolleri S P A Dispositivo per il bloccaggio di utensili per una pressa piegatrice

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3524694A1 (de) * 1985-07-11 1987-01-22 Hilma Gmbh Maschf Spannvorrichtung fuer oberwerkzeuge in abkantpressen
US5022256A (en) * 1988-09-29 1991-06-11 Machinefabriek Wila B.V. Clamping device
US20030005744A1 (en) * 1999-11-30 2003-01-09 Luciano Gasparini Safety tool for supporting and holding at least one interchangeable utensil, particularly on a press-bending machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE19546969A1 (de) * 1995-12-15 1997-06-19 Amada Gmbh Schnellspannvorrichtung für zumindest ein Werkzeug einer Bearbeitungsmaschine
FR2844213B1 (fr) * 2002-09-09 2004-11-26 Amada Europ Sa Systeme de peigne pour intermediaires

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3524694A1 (de) * 1985-07-11 1987-01-22 Hilma Gmbh Maschf Spannvorrichtung fuer oberwerkzeuge in abkantpressen
US5022256A (en) * 1988-09-29 1991-06-11 Machinefabriek Wila B.V. Clamping device
US20030005744A1 (en) * 1999-11-30 2003-01-09 Luciano Gasparini Safety tool for supporting and holding at least one interchangeable utensil, particularly on a press-bending machine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1884298A1 (de) * 2006-08-04 2008-02-06 Teda S.R.L Vorrichtung zum Verriegeln eines Werkzeugs an einer Werkzeugmaschine, insbesondere an einer Biegepresse
CN101543863B (zh) * 2008-03-25 2010-12-08 鸿富锦精密工业（深圳）有限公司 连接装置
WO2011141774A1 (en) * 2010-05-13 2011-11-17 Andrea Argentin Fixing device for a tool to the cursor of a bending-press
ITMI20120374A1 (it) * 2012-03-09 2013-09-10 T E D A S R L Dispositivo di bloccaggio, particolarmente per matrici di presse piegatrici.
WO2015164483A1 (en) * 2014-04-26 2015-10-29 Wilson Tool International Inc. Dynamic clamp and tool holders therefor
US9555456B2 (en) 2014-04-26 2017-01-31 Wilson Tool International Inc. Dynamic clamp and tool holders therefor
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
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

Also Published As

Publication number Publication date
US20040163442A1 (en) 2004-08-26
CN1329138C (zh) 2007-08-01
TW200505605A (en) 2005-02-16
FR2851488B1 (fr) 2005-05-20
RU2004105913A (ru) 2005-07-20
EP1449599B1 (de) 2006-07-05
DE602004001408T2 (de) 2007-02-01
TWI273932B (en) 2007-02-21
RU2338613C2 (ru) 2008-11-20
US7096708B2 (en) 2006-08-29
DE602004001408D1 (de) 2006-08-17
CN1522809A (zh) 2004-08-25
ATE332197T1 (de) 2006-07-15
FR2851488A1 (fr) 2004-08-27

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