EP1479461A1 - Haltevorrichtung eines Stempels in einer Biegepresse - Google Patents
Haltevorrichtung eines Stempels in einer Biegepresse Download PDFInfo
- Publication number
- EP1479461A1 EP1479461A1 EP04012065A EP04012065A EP1479461A1 EP 1479461 A1 EP1479461 A1 EP 1479461A1 EP 04012065 A EP04012065 A EP 04012065A EP 04012065 A EP04012065 A EP 04012065A EP 1479461 A1 EP1479461 A1 EP 1479461A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- punch
- support system
- permanent magnets
- tool
- groove
- 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- Withdrawn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
- B21D5/02—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 deals with a support system for a punch for a bending press.
- a bending press provides for a structure composed of a lower table on which a matrix die rests, on which the sheet of plate to be bent is rested, and of a vertically translating upper table adapted to support a tool, called punch, adapted to press onto the plate next to the below-placed matrix die.
- Punches are blocked in an upper table seat through an hooking device that provides for an actual locking device of the mechanical, pneumatic or hydraulic type and a stop or support device to prevent the punch from falling when it is free from the locking system upon assembling or disassembling it for a replacement.
- the stop device such as for example the one disclosed in Italian Patent N. 1308548, provides for a coupling between a stop tooth and a groove obtained in the punch.
- a first electromagnet is further provided, inserted inside the press housing in which the punch tang is inserted.
- a permanent magnet is inserted that operates on the punch ends in order to support the punch itself, while the first electromagnet, if activated, cancels or decreases the support flow emitted by the first permanent magnet till it allows unlocking the tool.
- the punch supporting action is thereby separated from the unlocking control action in order to keep the punch in its seat even in case of failures and consequently improve the resistance characteristics of the whole assembly.
- the projecting member has a slanted coupling surface with respect to the tang axis so that the magnet exerts an attraction force with an horizontal component and a vertical component.
- the projecting member application implies particular tool working and a welding that is particularly difficult and is the weak point of the tool itself.
- Object of the present invention is solving the above-described inconveniences by providing an extremely simple tool or punch, though at the same time meeting the task of guaranteeing the tool seal during its hooking and unhooking steps to the upper table of the bending press.
- This object is wholly obtained by the support system for the tool of a bending press object of the present invention that is characterised in that it provides a permanent magnet on the upper horizontal plane surface of the tool tang.
- the permanent magnet is housed in a groove longitudinally obtained on said upper surface or, according to another embodiment, in an intermediate member placed between tool and locking device.
- 1 designates a punch adapted to be secured through suitable locking means to the upper table of a bending press.
- the punch provides for an horizontal groove or slot 2 obtained on the upper face 5 of the punch tang 3.
- one or more permanent magnets 4 are housed and are smoothly arranged along the whole or part of the groove.
- the groove has a depth that is greater than the magnet thickness, so that the thrust exerted by the press is not discharged onto the magnets that are rather brittle and do not resist to the high compression forces of a bending press.
- the magnets wholly occupy the groove obtained on the punch head, while in figure 2 the magnets are spaced and smoothly arranged along the groove. The magnets are retained into the groove through glueing.
- the groove has been made by milling the plane head tool surface, but it could be obtained by screwing two edges to the punch, such edges creating the groove or slot in which the permanent magnets are inserted.
- 6 points out an intermediate member composed of a plate on the lower face 7 of which a groove is obtained in which a permanent magnet 8 is inserted, that faces the upper face 5 of a tool, not shown.
- two blind holes 10 are obtained in which two helical springs 11 are housed, that allow the plate 12 of the locking device to slightly rotate outwards in order to allow a similar punch rotation to enable the punch detachment from the magnet in case of replacement.
- the locking device plate is secured with a socket head screw 13 whose shank passes through a hole with a greater diameter.
- the permanent magnet action in fact is such as to oppose a certain resistance to a vertical traction action, while such action can be easily won by a rotation exerted by an operator.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITPR20030037 | 2003-05-23 | ||
ITPR20030037 ITPR20030037A1 (it) | 2003-05-23 | 2003-05-23 | Sistema di sostegno di un punzone per pressa piegatrice. |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1479461A1 true EP1479461A1 (de) | 2004-11-24 |
Family
ID=33042711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04012065A Withdrawn EP1479461A1 (de) | 2003-05-23 | 2004-05-21 | Haltevorrichtung eines Stempels in einer Biegepresse |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1479461A1 (de) |
IT (1) | ITPR20030037A1 (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106216516A (zh) * | 2016-08-08 | 2016-12-14 | 安徽威亚机械制造有限公司 | 一种折弯机压模、折弯机及压模方法 |
WO2018049056A1 (en) * | 2016-09-09 | 2018-03-15 | Mate Precision Tooling, Inc. | Press brake tool engagement system |
WO2018071946A3 (de) * | 2016-10-20 | 2018-07-05 | Trumpf Maschinen Austria Gmbh & Co. Kg. | Vorrichtung zum positionieren eines biegewerkzeuges |
WO2019006080A1 (en) * | 2017-06-29 | 2019-01-03 | Mate Precision Tooling, Inc. | MAGNETIC PRESS BRAKE AND INPUT SYSTEMS IN A MACHINE TOOL HOLD |
US10953453B2 (en) | 2017-11-06 | 2021-03-23 | Mate Precision Technologies Inc. | Magnetic press brake tooling engagement system |
US11235370B2 (en) | 2019-04-08 | 2022-02-01 | E&S Enterprises Inc. | Punch assembly with interchangeable tips |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2912249A (en) * | 1955-06-13 | 1959-11-10 | Eckold Walter | Tool clamps |
JPS5550920A (en) * | 1978-10-06 | 1980-04-14 | Matsushita Electric Ind Co Ltd | Bending device |
DE19518387A1 (de) * | 1995-05-23 | 1996-11-28 | Dieter Jung | Abkantbank |
FR2791590A1 (fr) * | 1999-03-31 | 2000-10-06 | Michel Brisard | Dispositif de mise en position et de maintien pour outils travaillant en exercant une pression et porte-outils correspondant |
JP2003117607A (ja) * | 2001-10-09 | 2003-04-23 | Kitagawa Seisakusho:Kk | プレス曲げ機用金型 |
-
2003
- 2003-05-23 IT ITPR20030037 patent/ITPR20030037A1/it unknown
-
2004
- 2004-05-21 EP EP04012065A patent/EP1479461A1/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2912249A (en) * | 1955-06-13 | 1959-11-10 | Eckold Walter | Tool clamps |
JPS5550920A (en) * | 1978-10-06 | 1980-04-14 | Matsushita Electric Ind Co Ltd | Bending device |
DE19518387A1 (de) * | 1995-05-23 | 1996-11-28 | Dieter Jung | Abkantbank |
FR2791590A1 (fr) * | 1999-03-31 | 2000-10-06 | Michel Brisard | Dispositif de mise en position et de maintien pour outils travaillant en exercant une pression et porte-outils correspondant |
JP2003117607A (ja) * | 2001-10-09 | 2003-04-23 | Kitagawa Seisakusho:Kk | プレス曲げ機用金型 |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 0040, no. 92 (M - 018) 3 July 1980 (1980-07-03) * |
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 08 6 August 2003 (2003-08-06) * |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106216516B (zh) * | 2016-08-08 | 2018-09-11 | 安徽威亚机械制造有限公司 | 一种折弯机压模及折弯机 |
CN106216516A (zh) * | 2016-08-08 | 2016-12-14 | 安徽威亚机械制造有限公司 | 一种折弯机压模、折弯机及压模方法 |
US11383284B2 (en) | 2016-09-09 | 2022-07-12 | Mate Precision Technologies Inc. | Press brake tool engagement system |
WO2018049056A1 (en) * | 2016-09-09 | 2018-03-15 | Mate Precision Tooling, Inc. | Press brake tool engagement system |
WO2018071946A3 (de) * | 2016-10-20 | 2018-07-05 | Trumpf Maschinen Austria Gmbh & Co. Kg. | Vorrichtung zum positionieren eines biegewerkzeuges |
US11491530B2 (en) | 2016-10-20 | 2022-11-08 | Trumpf Maschinen Austria Gmbh & Co. Kg | Device for positioning a bending tool |
CN109922900A (zh) * | 2016-10-20 | 2019-06-21 | 特鲁普机械奥地利有限公司及两合公司 | 定位弯曲工具的装置 |
CN109922900B (zh) * | 2016-10-20 | 2020-11-20 | 特鲁普机械奥地利有限公司及两合公司 | 定位弯曲工具的方法 |
US11471927B2 (en) | 2016-10-20 | 2022-10-18 | Trumpf Maschinen Austria Gmbh & Co. Kg | Loading method for a machine tool and tool transfer device |
US10792716B2 (en) | 2017-06-29 | 2020-10-06 | Mate Precision Tooling, Inc. | Magnetic press brake and machine tooling engagement systems |
WO2019006080A1 (en) * | 2017-06-29 | 2019-01-03 | Mate Precision Tooling, Inc. | MAGNETIC PRESS BRAKE AND INPUT SYSTEMS IN A MACHINE TOOL HOLD |
US10953453B2 (en) | 2017-11-06 | 2021-03-23 | Mate Precision Technologies Inc. | Magnetic press brake tooling engagement system |
US11235370B2 (en) | 2019-04-08 | 2022-02-01 | E&S Enterprises Inc. | Punch assembly with interchangeable tips |
Also Published As
Publication number | Publication date |
---|---|
ITPR20030037A1 (it) | 2004-11-24 |
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18D | Application deemed to be withdrawn |
Effective date: 20050525 |