EP1311355A1 - Tool clamping device for a shaping tool, especially for a press brake - Google Patents
Tool clamping device for a shaping tool, especially for a press brakeInfo
- Publication number
- EP1311355A1 EP1311355A1 EP01953656A EP01953656A EP1311355A1 EP 1311355 A1 EP1311355 A1 EP 1311355A1 EP 01953656 A EP01953656 A EP 01953656A EP 01953656 A EP01953656 A EP 01953656A EP 1311355 A1 EP1311355 A1 EP 1311355A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- clamping device
- adapter
- tool adapter
- pressure
- 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
Links
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
-
- 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
Definitions
- Tool clamping device for a mold, in particular a press brake
- the invention relates to a tool clamping device, as described in the preamble of claim 1.
- tool adapters For detachable mounting of molds, e.g. Press rams, press dies on pressure bars, in particular on press brakes, are known tool adapters which run in the longitudinal direction of the pressure bar and are connected to it in a non-moving manner and form a groove-shaped receptacle for the tools.
- the tools are positioned and held in the holder by means of a clamping device.
- the design of the tool adapters and the tools is matched to one another in a modular manner and a pressure bar is equipped with a row of tool adapters, which have a partial length of a length of the pressure bar.
- the tool adapter is according to this known design on a side surface of the
- Fastened pressure bar and has a pressure piece cooperating with the end face of the pressure bar and coming to bear against it for the transmission of the pressing force.
- a disadvantage of this embodiment is that the bending deformation of the pressure beam occurring during a pressing process and the tool adapters adapting to the bending line, as a result of the different radius of the neutral zone to the center of curvature, cause an undefinable relative movement in the direction of the longitudinal extension of the pressure beam between these and the tool adapters. In extreme cases, this causes the tool adapter on the pressure beam to move from a predetermined position within a play of the fastening elements predetermined by tolerances. This relative shift, which also occurs between the lower and upper tool, causes incorrectly machined
- the object of the invention is now to provide a tool clamping device in which the tool adapter after the end of the pressing process causing the deflection and a change in position of the tool adapter relative to the pressure beam in the
- Formations according to claims 2 to 6 are advantageous, as a result of which the receiving area of the tool adapter for the molding tool can perform compensating movements in the longitudinal direction of the pressure bar relative to the connecting area, in which the tool adapter is non-positively connected, and thus the non-positive connection of lateral forces remains unloaded and the receiving area is automatically reset to the starting position after the press stroke has ended.
- an embodiment according to claim 13 is also possible because the required restoring forces are achieved by means of machine elements that are structurally simple and do not significantly increase the assembly effort in the manufacture of the systems.
- a training according to claim 14 is advantageous because it makes the lateral
- Deflection and the springback behavior in the tool adapter between the receiving and the connecting area can be set optionally.
- FIG. 1 shows a partial section of a pressure beam of a press brake with a tool clamping device according to the invention, in a side view, in section;
- Fig. 2 the tool clamping device according to the invention, cut according to the lines
- FIG. 3 shows another embodiment of the tool clamping device according to the invention in a side view, in section
- Fig. 4 shows a further embodiment of the tool clamping device according to the invention in
- a tool adapter 8 held on a side surface 6 of the pressure beam 4 by means of a clamping bar 7 which can be screwed to the pressure beam 4 consists, for example, of a pressure piece 10 which is supported against a pressure surface 9 of the pressure beam 4, the pressure piece 10 lying opposite one another and projecting beyond the pressure piece 10 strip-shaped clamping claws 11, 12 spaced apart from one another at a distance 13, which corresponds to a thickness 14 of the molding tool 3, as a result of which a groove-shaped receiving area 15 for the molding tool 3 is formed.
- the clamping claw 11 projects beyond the pressure surface 9 in the direction of the pressure beam 4 and overlaps it on the side surface 6, as a result of which a connecting area 16 for frictionally engaging the clamping claw 11 and so that the tool adapter 8, in cooperation with the terminal strip 7, a number of fastening elements 17, for example screws, crossing the pressure bars 4 and in threaded engagement with the terminal strip 7 are achieved.
- the clamping claw 12 opposite the pressure piece 10 of the clamping claw 11, on the other hand, is only arranged in the area of a side surface 18 of the pressure piece 10 and projects in the direction of the mold 3, the clamping screws 11, 12 and the pressure piece 10 crossing the clamping screws
- the design of the tool adapter 8 now provides an elastically resettable relative adjustment between the receiving area 15 and the connecting area 16 in the direction of the longitudinal extension of the pressure beam 4 according to a double arrow 20.
- a material cut 23, e.g., running across an entire thickness 21 of a clamping extension 22 and approximately parallel to the pressure surface 9 of the pressure beam 4 is Parting line 24 is provided, which runs in the direction of a length 25 of the tool adapter 8 and merges at a lateral distance 26 from opposite end faces 27, 28 of the tool adapter 8 into material separations 29 running parallel to these end faces 27, 28 in the direction of the tool holder 15.
- End regions 33, 34 facing the receiving region 15 along the end faces
- 28 running material separations 29 can be shaped in various ways in order to achieve the rebound and return behavior of the connecting webs 30, 31.
- the connecting webs 30, 31 form resetting means 34, 35 due to the resilient properties of the material of the tool adapter 8, which counteract a compensation of the different length differences occurring during deflection of the pressure beam 3 during a working stroke and associated displacement effects between the pressure beam 3 and the tool adapter 8 and thus effectively prevent a so-called migration of the tool adapter 8 along the pressure surface 9.
- FIG. 3 shows another embodiment of one equipped with a resetting means 36 Tool adapter 8 shown.
- the resetting means 36 acts between the tool adapter 8 and the pressure beam 4.
- the tool adapter 8 corresponds to the embodiment of the figures already described, but after this embodiment attention is paid to the fact that in one of the different ones Bending lines entering the tool adapter 8 on the pressure beam 4 after
- the tool adapter 8 on the pressure bar 4 is returned to the original position.
- the tool adapter 8 and / or the pressure bar 4 have sliding or rolling means 37 that reduce the coefficient of friction in the connection area.
- rolling elements are provided between the tool adapter 8 and the pressure beam 4, which enable a relative movement in the direction of the longitudinal extension of the pressure beam 4.
- Rolling elements which permit such a relative movement are likewise arranged between the terminal strip 7 and the pressure beam 4.
- spherical bodies can also be used instead of the rolling elements in the connection area 16.
- FIG. 4 shows another embodiment of a resetting means 39 between the tool adapter 8 and the pressure bar 4 for returning a migration movement that has taken place between the tool adapter 8 and the pressure bar 4.
- the restoring means 39 are perpendicular to the pressure surface 9 of the pressure beam 4
- Direction between the pressure beam 4 and the pressure piece 10, provided as bending springs, rod springs, pins 40 are provided, which undergo a bending deformation when there is a relative movement between the pressure beam 4 and the pressure piece 10, with a return after the displacement force ceases due to the springback in the original position.
- Receiving bores 41, 42 in the pressure beam 4 and the pressure piece 10 are designed as stepped bores, which cause the pins 40 to be released for bending deformation.
- the resetting means 39 directly in the pressure beam and to have this act directly on the molding tool 3, so that a relative movement which the molding tool 3 performs through the bending deformation of the pressure beam 4 is compensated for or the molding tool 3 to return to its starting position.
- FIGS. 1, 2; 3; 4 shown designs and measures form the subject of independent, inventive solutions.
- the relevant tasks and solutions according to the invention can be found in the detailed descriptions of these figures.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT01953656T ATE305830T1 (en) | 2000-08-14 | 2001-07-25 | TOOL CLAMPING DEVICE FOR A MOLDING TOOL, IN PARTICULAR A PRESS BRAKE |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0139900A AT408729B (en) | 2000-08-14 | 2000-08-14 | TOOL CLAMPING DEVICE FOR A MOLDING TOOL, IN PARTICULAR A BENDING PRESS |
AT13992000 | 2000-08-14 | ||
PCT/AT2001/000254 WO2002013985A1 (en) | 2000-08-14 | 2001-07-25 | Tool clamping device for a shaping tool, especially for a press brake |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1311355A1 true EP1311355A1 (en) | 2003-05-21 |
EP1311355B1 EP1311355B1 (en) | 2005-10-05 |
Family
ID=3688190
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01953656A Expired - Lifetime EP1311355B1 (en) | 2000-08-14 | 2001-07-25 | Tool clamping device for a shaping tool, especially for a press brake |
Country Status (8)
Country | Link |
---|---|
US (1) | US6782729B2 (en) |
EP (1) | EP1311355B1 (en) |
JP (1) | JP4980545B2 (en) |
CN (1) | CN1216701C (en) |
AT (1) | AT408729B (en) |
AU (1) | AU2001276147A1 (en) |
DE (1) | DE50107629D1 (en) |
WO (1) | WO2002013985A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7021116B2 (en) * | 2003-12-19 | 2006-04-04 | Wilson Tool International, Inc. | Press brake tooling technology |
US7721586B2 (en) | 2005-02-08 | 2010-05-25 | Wilson Tool International Inc. | Press brake tool seating technology |
JP5631149B2 (en) * | 2010-10-19 | 2014-11-26 | 株式会社アマダ | Upper mold holder device |
CN102078893B (en) * | 2010-11-15 | 2012-10-10 | 陕西飞机工业(集团)有限公司 | S-shaped section molding process equipment |
US9566632B1 (en) | 2015-09-08 | 2017-02-14 | Con-Tech Manufacturing, Inc. | Shaping tool die |
NL2018393B1 (en) * | 2017-02-20 | 2018-09-17 | Wila Bv | Device for clamping a tool and method for manufacturing such a device |
CN107971447A (en) * | 2017-09-06 | 2018-05-01 | 合肥常青机械股份有限公司 | A kind of truck chassis clamp device for riveting transverse beam |
CN109433867B (en) * | 2018-10-12 | 2023-08-22 | 中信国安建工集团有限公司 | Building fastener bending equipment and using method |
EP4180140A1 (en) * | 2021-11-16 | 2023-05-17 | Bystronic Laser AG | Bending machine |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1240703A (en) * | 1959-07-31 | 1960-09-09 | Achard | Improvements to folding presses |
FR2540756A1 (en) * | 1983-02-15 | 1984-08-17 | Promecan Sisson Lehmann | ADAPTER DEVICE FOR MOUNTING FOLDING PUNCHES ON A FOLDING PRESS |
US4620435A (en) * | 1984-10-24 | 1986-11-04 | Cincinnati Incorporated | Deflection compensating assembly for fabricating machine tools |
NL8802402A (en) * | 1988-09-29 | 1990-04-17 | Wila Maschf Bv | CLAMP DEVICE, EG. FOR THE UPPER TOOL OF A PRESS BRAKE. |
US5065610A (en) * | 1990-03-12 | 1991-11-19 | Kabushiki Kaisha Kosmek | Clamping apparatus for press brake |
NL9100034A (en) * | 1991-01-10 | 1992-08-03 | Wila Maschf Bv | PRESS BRAKE TOOL, AND AN ADAPTER AND A BRAKE PRESS FOR IT. |
JPH06262263A (en) * | 1993-03-15 | 1994-09-20 | Yazaki Corp | Device for clamping press brake upper die |
JP2971013B2 (en) * | 1995-10-23 | 1999-11-02 | 株式会社アマダ | Upper die device in bending machine |
DE19546969A1 (en) * | 1995-12-15 | 1997-06-19 | Amada Gmbh | Quick clamping device for at least one tool of a processing machine |
US6003360A (en) * | 1997-07-01 | 1999-12-21 | Wilson Tool International, Inc. | Press brake tool holder |
IT1298501B1 (en) * | 1998-01-28 | 2000-01-12 | Tecnostamp S R L | BENDING PRESSES JAW DRIVE SYSTEM |
IT1311880B1 (en) * | 1999-11-30 | 2002-03-19 | Luciano Gasparini | SUPPORT AND LOCKING DEVICE WITH SAFETY FUNCTION AT LEAST ONE INTERCHANGEABLE TOOL, PARTICULARLY IN A MACHINE |
US6564611B2 (en) * | 2001-07-30 | 2003-05-20 | Wilson Tool International, Inc. | Hydraulic press brake tool holder |
-
2000
- 2000-08-14 AT AT0139900A patent/AT408729B/en not_active IP Right Cessation
-
2001
- 2001-07-25 EP EP01953656A patent/EP1311355B1/en not_active Expired - Lifetime
- 2001-07-25 CN CN018142060A patent/CN1216701C/en not_active Expired - Fee Related
- 2001-07-25 WO PCT/AT2001/000254 patent/WO2002013985A1/en active IP Right Grant
- 2001-07-25 JP JP2002519114A patent/JP4980545B2/en not_active Expired - Fee Related
- 2001-07-25 AU AU2001276147A patent/AU2001276147A1/en not_active Abandoned
- 2001-07-25 DE DE50107629T patent/DE50107629D1/en not_active Expired - Lifetime
-
2003
- 2003-02-12 US US10/365,338 patent/US6782729B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0213985A1 * |
Also Published As
Publication number | Publication date |
---|---|
AT408729B (en) | 2002-02-25 |
WO2002013985A1 (en) | 2002-02-21 |
US20030221476A1 (en) | 2003-12-04 |
US6782729B2 (en) | 2004-08-31 |
CN1216701C (en) | 2005-08-31 |
WO2002013985A8 (en) | 2002-05-02 |
DE50107629D1 (en) | 2005-11-10 |
JP4980545B2 (en) | 2012-07-18 |
CN1447723A (en) | 2003-10-08 |
AU2001276147A1 (en) | 2002-02-25 |
EP1311355B1 (en) | 2005-10-05 |
JP2004504948A (en) | 2004-02-19 |
ATA13992000A (en) | 2001-07-15 |
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