EP1781431A1 - Punching machine comprising a spring-mounted workpiece support - Google Patents
Punching machine comprising a spring-mounted workpiece supportInfo
- Publication number
- EP1781431A1 EP1781431A1 EP05774074A EP05774074A EP1781431A1 EP 1781431 A1 EP1781431 A1 EP 1781431A1 EP 05774074 A EP05774074 A EP 05774074A EP 05774074 A EP05774074 A EP 05774074A EP 1781431 A1 EP1781431 A1 EP 1781431A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- workpiece
- punching machine
- machine according
- spring
- support
- 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
- 238000004080 punching Methods 0.000 title claims abstract description 59
- 238000003754 machining Methods 0.000 claims abstract description 18
- 238000005520 cutting process Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims 1
- 238000006748 scratching Methods 0.000 description 4
- 230000002393 scratching effect Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/20—Cutting beds
-
- 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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/34—Perforating tools; Die holders
Definitions
- the invention relates to a punching machine with a tool holder for a punching tool and a die, which has a cutting edge on which the punching tool is machined. and at least one workpiece support which is supported by at least one spring element and which is arranged in the region of the width, and a method according to claim 16.
- Burrs and extent of burr formation depend on various factors, such as the machined material, the cutting geometry or the condition of the tools used. After the punching operation, the workpiece, after it had been at rest in the previous processing operation, moved transversely to the direction of movement of the punch, either to move it to the next processing position, either to it after the end of the processing Machine to remove.
- the workpiece If the workpiece is not lifted a certain distance from the die after machining and supported in an off-set position, the workpiece, as it moves, glides on a die surface aligned with the cutting edge in the direction of displacement.
- a burr projecting from the cutting edge after punching in the return stroke direction of the punch causes - even if the projection of the burr is only a few hundredths of a mm in relation to the cutting edge - possibly scratches on the side of the workpiece facing the die.
- DE 297 02 699 U1 proposes, inter alia, to movably support a workpiece support on the base body of the die against the action of a restoring force in the machining stroke direction of the punch.
- a workpiece support which is supported on the main body of the die via a spring is provided. provides.
- the problem has been found that in workpieces with high weight, the tool support is pressed by the weight of the workpiece down and thereby ge the lower side of the workpiece ge again in the vicinity of the cutting edge reached or even rests on the die surface. A burr on the cutting edge thus again causes scratches on the underside of the workpiece. If stronger spring elements are used, then the spring elements do not yield sufficiently during punching and the workpiece support is pressed against the underside of the workpiece so strongly that during the punching process deformation of lighter and therefore generally thinner workpieces occurs ,
- JP 07256367 A it is proposed to use a brush table, wherein the brushes are fixed at one end to a plate and the other free end protrudes through ei ⁇ ne second plate which is parallel to the first plate and opposite the first plate is height adjustable. By this measure, the stiffness of the brushes were ⁇ changed. In order to adapt a punching machine to workpieces of different weight, therefore, the entire brush table must be changed by adjusting the height of the plates relative to each other. Brushes have the disadvantage that they wear out. Even in the case of the arrangement presented in JP 07256367 A, in the case of heavy workpieces it is possible for the brushes to be pushed through and the workpiece to rest on the matrix and thus to cause scratches.
- the object of the present invention is to provide a punching machine on which workpieces of different weights can be machined without damage.
- a punching machine of the type mentioned in which the spring force of the workpiece support supporting spring element is adjustable.
- the punching machine can be easily adjusted to workpieces of different weights.
- the spring force can be adjusted so that the workpiece is securely spaced from the cutting edge during transport, but the spring force is not so great that deformation of the workpiece occurs during the stamping process.
- the spring force is thus selected in each case so that the workpiece is spaced at a stamping punch located in a starting position of the die, yielding at lowering punch punch the spring elements and the workpiece is pressed by the punch, in particular flat, against the die before the stamped part is punched out in the fastening lifting direction during a further movement of the stamp.
- the arrangement of the workpiece support in the area of the die, ie in the vicinity of the die, has the advantage that the adjustment does not have to be made on the entire workpiece table. It is sufficient to protect the workpiece against scratching locally in the region of the die.
- Under an arrangement in the range of trize is both an arrangement on the die itself, wherein the spring element is supported on the main body of the die, as well as an arrangement outside the die on the workpiece table, wherein the spring element is supported on the workpiece table or the base of the workpiece table to understand.
- the adjustment of the spring element can be done by bei ⁇ example, a spring is biased differently.
- a spring is biased differently.
- the Feder ⁇ constant is variable.
- spring elements under defence ⁇ lichste components are conceivable, for example, spiral or Tel ⁇ lerfedern and rubber spring elements are used as spring elements.
- a stop can be provided which limits the movement of the spring element or the workpiece support in the return stroke direction.
- the spring element and the workpiece support are arranged on a workpiece table in the vicinity of a Matrizenhait für a Matrizenhait für a
- the spring elements are arranged in the die itself and are based on a main body of the die. This means that corresponding spring-mounted tool supports have to be provided on each die. This is relatively expensive.
- such arranged spring elements are difficult to access and can be controlled, so that an adjustment of the spring force is not possible. It is therefore advantageous to use the spring elements the workpiece support to be arranged on the workpiece table, so that they are independent of the die.
- a corresponding device for controlling the spring elements and thus to adjust the spring force can be provided.
- the spring element is designed as an air spring element.
- the spring constant of such a spring element can be adjusted particularly easily and accurately via the air pressure.
- a pressure chamber may be provided, in which a the workpiece support ab micndes and cushioning air cushion is formed.
- the workpiece support comprises a bearing element support supported by the spring element and a support element mounted therein.
- a bearing element support supported by the spring element and a support element mounted therein.
- the support member may be formed as a role, so that the workpiece can be moved with low resistance along the workpiece support.
- the support element bearing is designed as a ball bearing and the support element as a ball.
- the workpiece is movable in all directions along the workpiece table with little friction.
- Such a spring-mounted workpiece support is particularly resistant to wear.
- the workpiece support supported by the spring element comprises one or more brushes.
- a brush can be attached directly to the spring element as a support element and / or be supported by it.
- one or more brushes could be arranged in a support member bearing formed as a brush holder and thus represent the support element.
- the brush holder could be supported by the spring element.
- the spring force of the spring element is manually adjustable.
- An operator of the punching machine can therefore, knowing the workpiece weight, adjust the spring force of the spring element by manual actuation of setting or operating means, for example a pressure regulating valve, and thus adapt the punching machine to the workpiece to be machined.
- the handling of the punching machine is simplified when the spring force is automatically adjustable.
- the weight of a workpiece can be detected, in particular automatically detected, and on this basis the spring force can be adjusted automatically without the intervention of a user.
- the weight or an identifier, for example the workpiece thickness, of a workpiece to be machined, to which the workpiece weight is assigned can be entered, so that a controller can adjust the spring force on the basis of this information.
- the spring force can be adapted during the machining of a workpiece. In principle, it is conceivable that the spring force is nachge ⁇ manually with decreasing weight of the workpiece.
- the spring force is automatically adapted to the weight of the workpiece during machining. It is conceivable that the weight loss of the workpiece with each punching process is known in a particular processing and, on the basis of this knowledge, the spring force is adapted during the machining. Alternatively, it is conceivable that the weight of the workpiece during the machining is detected continuously or quasi-continuously, ie after each or a predetermined number of punching operations, and the spring force is adjusted or adjusted in such a way on the basis of the detected weight of the workpiece in that scratching of the underside of the workpiece and bending of the workpiece during the punching process are avoided.
- the automatic adjustment of the spring force is possible in particular if weight detection means are provided for detecting the weight of a workpiece to be machined.
- the spring force can also be adjustable so that the workpiece is lifted after processing and before the process. Accordingly, before the punching operation, the spring force can be reduced, so that the workpiece is placed on the die. After the punching process, the spring force can be increased so that the workpiece is lifted sufficiently from the die in order to prevent scratching during the subsequent displacement of the workpiece. By adjusting the spring force so a lifting movement of the support elements can be controlled.
- the weight measuring means are connected to a control for adjusting the spring force.
- the controller controls this setting means, which depend on the nature of the spring element.
- the compressor or a valve for generating a specific pressure in the pressure chamber can be provided as setting means, for example. If, furthermore, a sensor is provided for detecting the pressure in the pressure chamber, a feedback to the control can follow, so that the pressure in the pressure chamber and thus the spring force of the spring element can be regulated.
- a control is also conceivable for any other type of spring element.
- a workpiece table may be provided, on which the die is arranged, wherein the workpiece table outside the die and the area in which one or more resiliently mounted workpiece supports angeord ⁇ net, is designed as a brush table.
- the workpiece table is formed in this area as a ball bearing table.
- larger workpieces can be moved relative to the punch and the die.
- the workpiece is also supported outside the die area to protect it from damage.
- lifting or resiliently supporting the workpiece in order to prevent scratching of the underside of the workpiece due to a ridge on the cutting edge of the die takes place only in the area of the die.
- FIG. 2 is a plan view of a die and the area surrounding it;
- Fig. 3 shows a cross section through the lower part of a punching machine.
- a punching machine 1 has a C-shaped machine frame 2 with an upper frame leg 3 and a lower frame leg 4.
- the tool bearing 6 is movable in a common direction with the punch in the direction of a machining stroke direction 7 or return stroke direction 8. Movements in the direction of the machining stroke direction 7 or the return stroke direction 8 are performed by the tool mounting 6 or the punch during the working strokes for machining workpieces and in return strokes following the working strokes.
- the punching punch cooperates with a punching tool in the form of a punching die 10.
- a controller 14 is provided for controlling the punching machine.
- FIG. 2 shows a top view of a punching tool and the area surrounding it.
- the die 10 is held.
- the die 10 has a circular cutting edge 16 which delimits a die opening 17.
- the die edge 16 is in alignment with a die support surface 18.
- a punch is moved past the cutting edge 16 during the punching process, so that it projects into the die cutout 17. Through the die opening 17 the punched out part falls.
- six workpiece supports 20 are arranged in the exemplary embodiment.
- the workpiece supports 20 comprise a support element mounting 21, in which a bearing element 22 designed as a ball is mounted.
- the workpiece supports 20 are resiliently supported or supported, wherein the spring force of the spring element not visible in FIG. 2 is adjustable.
- the workpiece table 11 is provided with brushes 23 which support a workpiece, the support height or the flexibility of the brushes 23 not being variable ,
- workpiece supports 20 are arranged on Maschinen Swisstisch ⁇ segments IIa, IIb, each um ⁇ a support element storage 21 and a support member 22 um ⁇ .
- the workpiece supports 20 are supported by a spring element 25, wherein the spring element 25 comprises a pressure chamber 26 with an air cushion.
- the pressure chambers 26 are supplied via compressed air lines 27 with compressed air.
- the Maschinentschauf ⁇ layers 20 are in the immediate vicinity of the die 10, which is held by the Matrizenhait für 15, respectively.
- the Aufla ⁇ genetti 22 are aligned with the free ends of the brushes 23, if not punched.
- the support elements 22 are movable together with the support element bearings 21 in the machining stroke direction 7 against an adjustable restoring force effected by the spring elements 25.
- the spring elements 25 are based on the base of the workpiece table 11.
- the work table segment IIa is guided vertically adjustable in order to be able to avoid the claws of the coordinate guide 13 and to be able to supply the workpiece substantially horizontally to the die area.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Punching Or Piercing (AREA)
- Jigs For Machine Tools (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202004013336U DE202004013336U1 (en) | 2004-08-26 | 2004-08-26 | Punching machine with spring-mounted workpiece support |
PCT/EP2005/009036 WO2006021395A1 (en) | 2004-08-26 | 2005-08-22 | Punching machine comprising a spring-mounted workpiece support |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1781431A1 true EP1781431A1 (en) | 2007-05-09 |
EP1781431B1 EP1781431B1 (en) | 2012-01-18 |
Family
ID=33395564
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05774074A Active EP1781431B1 (en) | 2004-08-26 | 2005-08-22 | Punching machine comprising a spring-mounted workpiece support |
Country Status (7)
Country | Link |
---|---|
US (2) | US7467534B2 (en) |
EP (1) | EP1781431B1 (en) |
JP (1) | JP5015777B2 (en) |
CN (1) | CN100562382C (en) |
AT (1) | ATE541654T1 (en) |
DE (1) | DE202004013336U1 (en) |
WO (1) | WO2006021395A1 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE458579T1 (en) * | 2007-06-30 | 2010-03-15 | Trumpf Werkzeugmaschinen Gmbh | MACHINE TOOL AND METHOD FOR PROCESSING A WORKPIECE |
WO2009065431A1 (en) * | 2007-11-24 | 2009-05-28 | Trumpf Werkzeugmaschinen Gmbh + Co.Kg | Segmental brush belt |
US20120054997A1 (en) * | 2010-03-09 | 2012-03-08 | International Engine Intellectual Property Company | Process and system for disassembling fuel injector |
USD666637S1 (en) * | 2010-07-14 | 2012-09-04 | Trumpf Werkzeugmaschinen Gmbh+Co. Kg | Machine tool |
JP2013091080A (en) * | 2011-10-26 | 2013-05-16 | Amada Co Ltd | Work transfer method and work transfer apparatus |
CN103611801B (en) * | 2013-11-18 | 2015-08-26 | 甘宁 | A kind of small closed Workpiece shaping device |
USD744552S1 (en) * | 2014-05-28 | 2015-12-01 | Trumpf Gmbh + Co. Kg | Sheet metal processing machine |
USD745072S1 (en) * | 2014-05-28 | 2015-12-08 | Trumpf Gmbh + Co. Kg | Sheet metal processing machine |
USD745071S1 (en) * | 2014-05-28 | 2015-12-08 | Trumpf Gmbh + Co. Kg | Sheet metal processing machine |
JP6444113B2 (en) * | 2014-09-25 | 2018-12-26 | 株式会社放電精密加工研究所 | Press molding system and press molding method |
CN106493779B (en) * | 2016-12-12 | 2018-04-13 | 安徽省东升食品有限公司 | A kind of family expenses bulk sausage cuts clamping device |
CN107839006A (en) * | 2017-11-08 | 2018-03-27 | 镇江市丹徒区顺发船舶螺旋桨有限公司 | A kind of adjustable propeller punch device |
USD919680S1 (en) * | 2018-12-05 | 2021-05-18 | Tormach, Inc. | Mill |
CN109590398B (en) * | 2019-01-30 | 2020-04-28 | 福建渃博特自动化设备有限公司 | Plate leveling method and terminal |
CN113477866B (en) * | 2021-07-07 | 2023-07-28 | 扬州市华胜铸造有限公司 | Metal casting equipment |
Family Cites Families (17)
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US2772735A (en) * | 1953-10-09 | 1956-12-04 | Continental Can Co | Multiple slide press for cutting sheet metal parts |
JPS6016845B2 (en) * | 1978-12-07 | 1985-04-27 | 川崎製鉄株式会社 | How to roll thick plates |
JPS6313632A (en) | 1986-07-03 | 1988-01-20 | Hideo Hoshi | Compound press metallic die device |
JPH0240406A (en) * | 1988-07-29 | 1990-02-09 | Noritz Corp | Liquid fuel burner |
JPH04190934A (en) * | 1990-11-22 | 1992-07-09 | Seiko Epson Corp | Die of numerically controlled press device |
JP2722937B2 (en) * | 1992-04-07 | 1998-03-09 | トヨタ自動車株式会社 | Wrinkle press load measuring device for press machine |
JPH07256367A (en) | 1994-03-18 | 1995-10-09 | Amada Co Ltd | Brush table in metal plate machine |
US5715721A (en) * | 1995-05-15 | 1998-02-10 | The Boeing Company | Floating forming die |
JP3297599B2 (en) * | 1996-02-13 | 2002-07-02 | 株式会社アマダ | Continuous cutting mold |
US5894754A (en) * | 1996-04-26 | 1999-04-20 | Amada Company, Limited | System for producing bent sheet-metal articles and components of the system |
DE29702699U1 (en) | 1997-02-17 | 1997-04-10 | Trumpf Gmbh & Co, 71254 Ditzingen | Die on a punching machine |
JPH11290969A (en) * | 1998-04-08 | 1999-10-26 | Amada Co Ltd | Turret punch press and method for using this turret punch press |
JP2001170727A (en) * | 1999-12-14 | 2001-06-26 | Murata Mach Ltd | Table structure of plate working machine |
DE19962607B4 (en) * | 1999-12-23 | 2007-08-02 | Schuler Pressen Gmbh & Co. Kg | Tool cassette with resilient die |
JP2001191127A (en) * | 1999-12-28 | 2001-07-17 | Keiaisha Seisakusho:Kk | Method and apparatus for banking |
JP4466933B2 (en) * | 2000-02-22 | 2010-05-26 | 株式会社アマダ | Punch cutting multifunction machine |
JP2004188536A (en) * | 2002-12-11 | 2004-07-08 | Amada Co Ltd | Brush table system for workpiece processing machine, and workpiece processing method |
-
2004
- 2004-08-26 DE DE202004013336U patent/DE202004013336U1/en not_active Expired - Lifetime
-
2005
- 2005-08-22 CN CNB2005800368489A patent/CN100562382C/en active Active
- 2005-08-22 JP JP2007528714A patent/JP5015777B2/en active Active
- 2005-08-22 EP EP05774074A patent/EP1781431B1/en active Active
- 2005-08-22 WO PCT/EP2005/009036 patent/WO2006021395A1/en active Application Filing
- 2005-08-22 AT AT05774074T patent/ATE541654T1/en active
-
2007
- 2007-02-23 US US11/678,144 patent/US7467534B2/en active Active
-
2008
- 2008-12-17 US US12/336,898 patent/US7757535B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2006021395A1 * |
Also Published As
Publication number | Publication date |
---|---|
US7467534B2 (en) | 2008-12-23 |
JP5015777B2 (en) | 2012-08-29 |
CN100562382C (en) | 2009-11-25 |
CN101048242A (en) | 2007-10-03 |
US7757535B2 (en) | 2010-07-20 |
JP2008510626A (en) | 2008-04-10 |
DE202004013336U1 (en) | 2004-10-28 |
WO2006021395A1 (en) | 2006-03-02 |
ATE541654T1 (en) | 2012-02-15 |
EP1781431B1 (en) | 2012-01-18 |
US20070175264A1 (en) | 2007-08-02 |
US20090095046A1 (en) | 2009-04-16 |
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