EP0653254B1 - Presse mit Pressen- und Schiebetisch - Google Patents
Presse mit Pressen- und Schiebetisch Download PDFInfo
- Publication number
- EP0653254B1 EP0653254B1 EP94120037A EP94120037A EP0653254B1 EP 0653254 B1 EP0653254 B1 EP 0653254B1 EP 94120037 A EP94120037 A EP 94120037A EP 94120037 A EP94120037 A EP 94120037A EP 0653254 B1 EP0653254 B1 EP 0653254B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- press
- tool
- sliding table
- sliding
- tables
- 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.)
- Expired - Lifetime
Links
- 238000005452 bending Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 101100390736 Danio rerio fign gene Proteins 0.000 description 1
- 101100390738 Mus musculus Fign gene Proteins 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S72/00—Metal deforming
- Y10S72/701—Preventing distortion
Definitions
- the invention relates to a press according to the preamble of claim 1, e.g. known from DE-A-39 05 069.
- step in a press Forces that cause the sliding table and press table to bend.
- the shaped Workpieces are inaccurate, have deformations, tool tops and - Bottom parts are excessively and unevenly stressed due to the deflection of the Tool platen.
- the object of the invention is to provide a device or measures that Deflection when forming different workpieces and shapes and consequently to compensate for differently sized press forces, i.e. not physically counteract avoidable deflection of the platen, so that Tool platen to keep even - flat.
- a particular advantage is the fact that the deformation is unavoidable anyway the press table as a fault in the tool holding plate and in the tool does not affect.
- defects in the tool the changes in the tool would require, by specifically varying the deflection of the tool clamping surface be balanced.
- the support means also such deflections can be compensated for that are not caused by the forming, but rather, for example, through sheet metal holding forces that occur earlier and thus cause a deformation (deflection).
- a sliding table 3 is set down on the press table 2 in FIG. 1.
- the sliding table 3 can be moved out of and into the press for tool change.
- Of the The press or the tool area is shown with an up and down press ram 1.
- an upper tool part 4 is carried, which under Intermediate layer of a material with a lower part of the tool left on the sliding table 3 5 interacts.
- Fig. 2 shows a press table 2 with a raised and set down on it Sliding table 3 and a drawing device 9 of a processing stage.
- the pulling device 9 is used for sheet metal storage, which starts before the actual forming process, so that the press table 2 first through the sheet metal holding, then in addition in time is burdened by the deformation of the sheet metal piece.
- the sliding table 3 has load-bearing walls 10 which extend in its longitudinal direction and in a transverse direction.
- the longitudinal walls 10 can be seen by way of example Longitudinal walls have contact surfaces 15. About these contact surfaces 15 is the Sliding table 3 on supporting surfaces 16 of the load-bearing walls 11 that terminate at the top the press table 2 placed.
- Fig. 3 shows a flat, planar shape of the support surfaces 15, 16.
- a press table with the load-bearing walls 11 1 and a sliding table 3 1 with the load-bearing walls 10 1 under load represented by arrows 12 1 .
- the plane, flat tool clamping surface 17 1 before loading takes on an uneven shape; likewise the contact surfaces 15 1 on the sliding table 3 1 and the contact surfaces 16 1 on the press table.
- the load on the press table and sliding table 3 1 leads to a deflection of the surfaces, as is indicated by the bending line 13.
- the contact surfaces 15 1 and 16 1 correspond, for example at full load, to the course of the bending line 13.
- the unloaded state of the press table and sliding table 3 1 indicates the starting line 14. It can easily be seen that the uneven tool clamping surface 17 1 significantly influences the support of a tool clamped thereon and its manufacturing accuracy.
- the unevenness in the surfaces 15 1 , 16 1 , 17 1 are shown coated so that the deviations can be seen in the drawing. The deviations are in the tenths of a millimeter range.
- FIGS. 5 to 8 An embodiment according to the invention in FIGS. 5 to 8 are based on support units 19 mechanical, electromechanical or hydraulic type. These support devices 19 can be adjusted in their effective length, for example, by control Motor-spindle lifting devices or hydraulic pressure cylinders.
- the support units are located and act essentially in the middle area of the sliding table 3 when looking at the top view in FIG. 5
- Support devices 19 between press table 2 and sliding table 3 shown The Support devices 19, the number of which on the forming ratios and thus on the Forming is set in the tools are supported on the press table 2 and act upwards against the underside, e.g. the platen of the sliding table 3.
- sliding table 3 and press table 2 are in the unloaded state shown.
- the bearing surfaces 15 and 16 on the load-bearing walls 10 and 11 are flat surfaces. However, these surfaces can also in accordance with the bending line 13 in Fig. 4 be preformed. According to FIGS. 7 and 8 support devices 19 come into effect in the middle area of the sliding table 3.
- the control (regulation) of the support devices 19 enables that, on the one hand the tool clamping surface 17 flat - flat - in all phases of the forming remains.
- the control allows a specific preforming of the tool clamping surface 17 to compensate for tool idiosyncrasies, i.e. Error in that Compensate tool by one or the other of the support devices 19th is precontrolled by a result of setting up the press or the tool Controlled variable.
- the regulation of the support devices 19 can be an individual regulation of each support element in a closed control loop, for example.
- the Measure the deflection of the platen becomes a comparator supplied, the output signal of which is fed to the hydraulics as a controlled variable is used to increase or decrease the pressure in the support element.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Press Drives And Press Lines (AREA)
- Machine Tool Units (AREA)
Description
- Fig. 1
- Den Werkzeugbereich einer Presse,
- Fig. 2
- eine Schnittansicht durch einen Pressentisch einer Presse mit auf dem Pressentisch abgesetztem Schiebetisch,
- Fig. 3
- einen Pressentisch in Seitenansicht mit darauf abgesetztem Schiebetisch,
- Fig. 4
- die sinnbildliche Darstellung von tragenden Längswänden von Pressentisch und Schiebetisch unter Pressenlast ohne die Maßnahme nach der Erfindung,
- Fig. 5
- einen Schiebetisch mit Abstützeinrichtungen in dessen mittlerem Bereich,
- Fign. 6 bis 8
- eine Bildfolge der sinnbildlichen Darstellung von Längswänden an Pressentisch und Schiebetisch mit Abstützeinrichtungen im mittleren Bereich des Schiebetisches in unbelastetem (Fig. 6), teilbelastetem (Fig. 7) und vollbelastetem Zustand (Fig. 8).
Claims (3)
- Presse mit einem oder mehreren auf- und abbewegbaren Pressenstößeln (1) mit Werkzeugoberteilen (4) für die Umformung, einem oder mehreren stationären Pressentischen (2) und einem oder mehreren für den Werkzeugwechsel aus der Presse und in diese verfahrbaren Schiebetischen (3) mit Werkzeugunterteilen (5), wobei die Schiebetische (3) für den Betrieb über tragende Wände (10) auf tragenden Wänden (11) im Pressentisch (2) aufgesetzt sind, gekennzeichnet durch die Verwendung von Abstützeinrichtungen (19), die durch Ansteuern im Höhenmaß einstellbar sind, die im wesentlichen im mittleren Bereich des einzelnen Schiebetisches angeordnet sind und hier zwischen Pressentisch (2) und Schiebetisch (3) bzw. einer Werkzeugaufspannplatte wirken.
- Presse nach Anspruch 1, dadurch gekennzeichnet, daß die Auflageflächen (15, 16) der tragenden Wände (10, 11) von Pressentisch (2) und Schiebetisch (3) im nicht belasteten Zustand ebene Flächen sind
- Presse nach Anspruch 1, dadurch gekennzeichnet, daß die Auflageflächen (15, 16) zwischen Pressentisch (2) und Schiebetisch (3) am Pressentisch (2), ggf. am Schiebetisch (3) oder auch an beiden der Tische (2, 3) entsprechend einer Biegelinie (13) geformt sind, die sich für einen ebenen Pressentisch (21, 111) unter Belastung ergeben würde.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4127237 | 1991-08-17 | ||
DE4127237A DE4127237A1 (de) | 1991-08-17 | 1991-08-17 | Presse mit pressen- und schiebetisch |
EP92113662A EP0528330B1 (de) | 1991-08-17 | 1992-08-11 | Presse mit Pressen- und Schiebetisch |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92113662A Division EP0528330B1 (de) | 1991-08-17 | 1992-08-11 | Presse mit Pressen- und Schiebetisch |
EP92113662.8 Division | 1992-08-11 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0653254A2 EP0653254A2 (de) | 1995-05-17 |
EP0653254A3 EP0653254A3 (de) | 1995-09-06 |
EP0653254B1 true EP0653254B1 (de) | 1998-01-21 |
Family
ID=6438519
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94120037A Expired - Lifetime EP0653254B1 (de) | 1991-08-17 | 1992-08-11 | Presse mit Pressen- und Schiebetisch |
EP92113662A Expired - Lifetime EP0528330B1 (de) | 1991-08-17 | 1992-08-11 | Presse mit Pressen- und Schiebetisch |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92113662A Expired - Lifetime EP0528330B1 (de) | 1991-08-17 | 1992-08-11 | Presse mit Pressen- und Schiebetisch |
Country Status (4)
Country | Link |
---|---|
US (1) | US5347840A (de) |
EP (2) | EP0653254B1 (de) |
DE (3) | DE4127237A1 (de) |
ES (2) | ES2075547T3 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4415577B4 (de) * | 1994-05-03 | 2007-02-22 | Müller Weingarten AG | Einrichtung zur Kompensation bzw. gezielten Einstellung von Durchbiegungen in Pressen der Umformtechnik |
US6868351B1 (en) * | 1999-10-19 | 2005-03-15 | The Minster Machine Company | Displacement based dynamic load monitor |
DE102010008255A1 (de) * | 2010-02-17 | 2011-08-18 | GM Global Technology Operations LLC, ( n. d. Ges. d. Staates Delaware ), Mich. | Presse und Betriebsverfahren dafür |
WO2014201576A1 (de) * | 2013-06-19 | 2014-12-24 | Bruderer Ag | Verfahren zum verwölben des maschinenbetts und/oder des pressenstössels einer stanzpresse sowie stanzpresse |
CN104607531A (zh) * | 2014-12-05 | 2015-05-13 | 柳州市顺菱汽车配件有限责任公司 | 冲压模具 |
CN111531028B (zh) * | 2020-05-09 | 2021-07-30 | 佛山市亿磁五金制品有限公司 | 一种金属件成型加工工艺 |
CN116811343B (zh) * | 2023-08-25 | 2023-11-10 | 湘潭新云科技有限责任公司 | 一种电动直驱cnc压机智能操作系统 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE616783C (de) * | 1934-03-06 | 1935-08-05 | Weingarten Vorm Hch Schatz A G | Abkant- und Biegepresse |
CH276233A (de) * | 1949-05-05 | 1951-06-30 | Aktiebolaget Svenska Flygmotor | Hydraulische Presse. |
US2905032A (en) * | 1956-05-18 | 1959-09-22 | Samuel J Fuchs | Die forging presses |
DE1452677A1 (de) * | 1964-01-16 | 1969-04-24 | Robert Heitmann | Vorrichtung zum Ausgleich der Durchbiegung bei Pressen,insbesondere Abkantpressen |
US3914975A (en) * | 1970-12-25 | 1975-10-28 | Amada Co Ltd | Hydraulic press brake |
DE3116379A1 (de) * | 1979-12-14 | 1982-12-23 | Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe | Heizplattenpresse |
DE2950441C2 (de) * | 1979-12-14 | 1986-04-10 | Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe | Auf Zylinder-Kolbenanordnungen einwirkende Meß- und Steuereinrichtung an einer Heizplattenpresse zur Herstellung von Werkstoffplatten aus Holz od. dgl. gleichmäßiger Dicke |
SE429944B (sv) * | 1982-03-22 | 1983-10-10 | Fjellman Press Ab | Hogtryckspress |
JPS59191600A (ja) * | 1983-04-15 | 1984-10-30 | Hitachi Ltd | ホツトプレス |
SU1530283A1 (ru) * | 1988-02-10 | 1989-12-23 | Научно-производственное объединение по кузнечно-прессовому оборудованию и гибким производственным системам для обработки давлением | Устройство дл компенсации прогиба инструмента листогибочного пресса |
US5067340A (en) * | 1988-05-05 | 1991-11-26 | Macgregor Donald C | Precision press brake |
DE3905069C2 (de) * | 1989-02-18 | 2000-10-12 | Schuler Pressen Gmbh & Co | Pressen-Anlage mit mehreren Pressen zum Bearbeiten von Blechteilen |
EP0484623B1 (de) * | 1991-05-25 | 1992-05-20 | SMS Hasenclever GmbH | Schmiedepresse |
US5156782A (en) * | 1991-10-02 | 1992-10-20 | John T. Hepburn, Limited | Maintaining press platens in parallel relationship |
-
1991
- 1991-08-17 DE DE4127237A patent/DE4127237A1/de not_active Withdrawn
-
1992
- 1992-08-11 EP EP94120037A patent/EP0653254B1/de not_active Expired - Lifetime
- 1992-08-11 EP EP92113662A patent/EP0528330B1/de not_active Expired - Lifetime
- 1992-08-11 ES ES92113662T patent/ES2075547T3/es not_active Expired - Lifetime
- 1992-08-11 ES ES94120037T patent/ES2113604T3/es not_active Expired - Lifetime
- 1992-08-11 DE DE59202689T patent/DE59202689D1/de not_active Expired - Fee Related
- 1992-08-11 DE DE59209156T patent/DE59209156D1/de not_active Expired - Fee Related
- 1992-08-17 US US07/931,203 patent/US5347840A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0653254A3 (de) | 1995-09-06 |
US5347840A (en) | 1994-09-20 |
EP0528330A1 (de) | 1993-02-24 |
EP0653254A2 (de) | 1995-05-17 |
ES2075547T3 (es) | 1995-10-01 |
EP0528330B1 (de) | 1995-06-28 |
DE4127237A1 (de) | 1993-02-18 |
DE59209156D1 (de) | 1998-02-26 |
ES2113604T3 (es) | 1998-05-01 |
DE59202689D1 (de) | 1995-08-03 |
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