EP0544137A2 - Assemblage pour la table ou le coulisseau d'une machine de formage - Google Patents
Assemblage pour la table ou le coulisseau d'une machine de formage Download PDFInfo
- Publication number
- EP0544137A2 EP0544137A2 EP92119098A EP92119098A EP0544137A2 EP 0544137 A2 EP0544137 A2 EP 0544137A2 EP 92119098 A EP92119098 A EP 92119098A EP 92119098 A EP92119098 A EP 92119098A EP 0544137 A2 EP0544137 A2 EP 0544137A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- longitudinal
- sheets
- ram assembly
- transverse beams
- short
- 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- Withdrawn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
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/007—Means for maintaining the press table, the press platen or the press ram against tilting or deflection
-
- 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
- B21D5/0272—Deflection compensating means
Definitions
- the invention relates to a table and / or ram assembly in a welded or cast construction of a forming machine.
- the table and plunger assembly is made in welded construction or, more rarely, in cast construction.
- the side members and, if necessary, the cross members are made of double T profiles or the box members are made of T profiles.
- the suspension of the table crossbeams and rams has a particular influence in this context, since both serve as direct supports for the parts of the forming tool.
- the problem of the invention consists in largely reducing the deflection of the conventional table and ram assemblies during the forming process and not increasing the mass or the height of the supports.
- one or more sheets 1 made of high-strength, generally non-weldable steel are arranged parallel to the steel sheets of the longitudinal and cross members and are capable of absorbing a high load.
- the outer sides of the sheets 1 are firmly connected to the press table.
- the sheets 1 are each provided with an opening 2 in which two controllable hydraulic short-stroke cylinders 4 are arranged.
- These short-stroke cylinders 4 are supported on the one hand against the high-strength sheets 1 and, on the other hand, against the steel sheets of the longitudinal and transverse beams, which are also provided with openings 3.
- a measuring bridge 5 is arranged transversely over the longitudinal and transverse beams, the ends of which are mounted in the neutral zone of the press table with regard to the deflection.
- a servo valve 6 and a monitoring valve 7 are arranged between the measuring bridge 5 and the belt of the longitudinal or cross members.
- the servo valve 6 is operatively connected to the short-stroke cylinders 4 via a hydraulic system known per se.
- the servo valve 6 will generally consist of a displacement sensor, a downstream transducer, a controller and the actual servo valve.
- the servo valve 6 responds as a function of the suspension of the belt and thus of the sheet 1.
- a pressure control valve is thereby acted upon, which regulates the pressure in the short-stroke cylinders 4. This causes the sheet 1 to be braced against the standing sheets of the longitudinal and cross members and the deflection of the press table is reduced, ie largely prevented.
- a hydraulic accumulator is available as the energy source, which is able to provide the oil quantity required for pressure build-up in the short-stroke cylinders 4.
- a reduction in pressure, as it must occur when the pressing force has subsided, is brought about by relieving the pressure in the short-stroke cylinders 4.
- the pressure accumulator is constantly charged by a pump.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4138607 | 1991-11-25 | ||
DE19914138607 DE4138607A1 (de) | 1991-11-25 | 1991-11-25 | Tisch- und/oder stoesselbaugruppe einer umformmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0544137A2 true EP0544137A2 (fr) | 1993-06-02 |
EP0544137A3 EP0544137A3 (en) | 1993-06-30 |
Family
ID=6445465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19920119098 Withdrawn EP0544137A3 (en) | 1991-11-25 | 1992-11-07 | Table or ram assembly for a forming machine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0544137A3 (fr) |
DE (1) | DE4138607A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007012860A1 (de) * | 2007-03-17 | 2008-09-18 | Schuler Pressen Gmbh & Co. Kg | Presse mit variabler Steifigkeit |
DE102016115446A1 (de) | 2016-08-19 | 2018-02-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Bombiervorrichtung für eine Umformmaschine, Umformmaschine mit Bombiervorrichtung, Werkzeug mit Bombiervorrichtung und Bombierverfahren |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10148954B4 (de) * | 2001-10-04 | 2013-06-13 | Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg | Vorrichtung zur Kompensation von Verformungen an Spannflächen von Maschinen |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1200920A (fr) * | 1958-07-01 | 1959-12-24 | Dispositif pour la compensation et le contrôle des déformations subies par les parties actives de presses ou machines analogues | |
DE1527979A1 (de) * | 1966-07-14 | 1971-11-04 | Karl Guerr | Abkantpresse |
DE1703297A1 (de) * | 1968-04-29 | 1972-02-17 | Freudenberg Carl Fa | Heizplattenpresse mit selbstkompensierenden Zylinderkolbenanordnungen |
FR1604992A (fr) * | 1968-12-30 | 1972-06-26 | ||
DE2245839A1 (de) * | 1972-05-25 | 1973-12-06 | Edouard Paskowsky S A | Faltpresse |
WO1982002360A1 (fr) * | 1981-01-13 | 1982-07-22 | Huber Arthur | Presse hydraulique comportant un tablier fixe et un tablier mobile |
EP0125974A1 (fr) * | 1983-05-05 | 1984-11-21 | Metalurgica Burcena, Sa- Mebusa | Presse à former et plus particulièrement presse plieuse |
-
1991
- 1991-11-25 DE DE19914138607 patent/DE4138607A1/de not_active Withdrawn
-
1992
- 1992-11-07 EP EP19920119098 patent/EP0544137A3/de not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1200920A (fr) * | 1958-07-01 | 1959-12-24 | Dispositif pour la compensation et le contrôle des déformations subies par les parties actives de presses ou machines analogues | |
DE1527979A1 (de) * | 1966-07-14 | 1971-11-04 | Karl Guerr | Abkantpresse |
DE1703297A1 (de) * | 1968-04-29 | 1972-02-17 | Freudenberg Carl Fa | Heizplattenpresse mit selbstkompensierenden Zylinderkolbenanordnungen |
FR1604992A (fr) * | 1968-12-30 | 1972-06-26 | ||
DE2245839A1 (de) * | 1972-05-25 | 1973-12-06 | Edouard Paskowsky S A | Faltpresse |
WO1982002360A1 (fr) * | 1981-01-13 | 1982-07-22 | Huber Arthur | Presse hydraulique comportant un tablier fixe et un tablier mobile |
EP0125974A1 (fr) * | 1983-05-05 | 1984-11-21 | Metalurgica Burcena, Sa- Mebusa | Presse à former et plus particulièrement presse plieuse |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007012860A1 (de) * | 2007-03-17 | 2008-09-18 | Schuler Pressen Gmbh & Co. Kg | Presse mit variabler Steifigkeit |
DE102007012860B4 (de) * | 2007-03-17 | 2010-08-26 | Schuler Pressen Gmbh & Co. Kg | Werkzeug für eine Presse mit variabler Steifigkeit |
US8925365B2 (en) | 2007-03-17 | 2015-01-06 | Schuler Pressen Gmbh & Co. Kg | Press with variable rigidity |
DE102016115446A1 (de) | 2016-08-19 | 2018-02-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Bombiervorrichtung für eine Umformmaschine, Umformmaschine mit Bombiervorrichtung, Werkzeug mit Bombiervorrichtung und Bombierverfahren |
Also Published As
Publication number | Publication date |
---|---|
EP0544137A3 (en) | 1993-06-30 |
DE4138607A1 (de) | 1993-05-27 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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PUAL | Search report despatched |
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AK | Designated contracting states |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 19931230 |