EP1344585B1 - Dispositif d'emboutissage profond hydroélastique - Google Patents
Dispositif d'emboutissage profond hydroélastique Download PDFInfo
- Publication number
- EP1344585B1 EP1344585B1 EP03005517A EP03005517A EP1344585B1 EP 1344585 B1 EP1344585 B1 EP 1344585B1 EP 03005517 A EP03005517 A EP 03005517A EP 03005517 A EP03005517 A EP 03005517A EP 1344585 B1 EP1344585 B1 EP 1344585B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drawing device
- deep drawing
- short
- several
- stroke
- 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
- 125000006850 spacer group Chemical group 0.000 claims abstract description 22
- 230000000694 effects Effects 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims 13
- 230000001960 triggered effect Effects 0.000 claims 1
- 238000003856 thermoforming Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 11
- 230000008901 benefit Effects 0.000 description 7
- 239000003921 oil Substances 0.000 description 4
- 238000004886 process control Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000418 atomic force spectrum Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
- B21D24/04—Blank holders; Mounting means therefor
- B21D24/08—Pneumatically or hydraulically loaded blank holders
Definitions
- the invention relates to a hydro-elastic deep-drawing device for drawing sheet metal parts according to the preamble of claim 1.
- a hydro-elastic deep-drawing device for drawing sheet metal parts according to the preamble of claim 1.
- Such a device is known from DE-A-19641411 known.
- thermoforming of tools or presses for drawing sheet metal parts known, which has a plurality of pressure cylinders and in this axially movable guided, acted upon by flow pressure piston piston for supporting a sheet holder plate and with another, a movable in the drawing direction drawing die receiving Cushions is equipped, the pressure cylinder connected to the pressure cylinders of the sheet holder support die cushion connected via flow paths and the drawing process from these pressure cylinders displaced flow pressure means are acted upon.
- thermoforming device Of importance in this thermoforming device is that when depressing the operated by a press ram drawing ring from the printing cylinders of the sheet holder support die cushion flowing pressure medium via lines in the pressure cylinder of the other die cushion, on which the drawing punch is received vertically movable, flows over and in the pressure cylinders this drawing pad guided piston guided, which in turn during the drawing process the drawing punch against the direction of movement of the drawing ring and the blank holder plate in the pulling direction.
- This thus realized direct flow network between the pressure cylinders of the sheet holder plate field of effect to the pressure cylinders of the drawing punch field of action is intended to represent a so-called pressure balance.
- thermoforming device Part of the disadvantages of mechanical drawing pins could be avoided with this known thermoforming device.
- a disadvantage of this thermoforming device has nevertheless been found: The resulting forces are not reproducible, because a dependence between the pull rate due to different flow resistance arise, that is, for a process control on a computer system, it is not suitable.
- the flow of forces during sheet metal forming is more or less parabolic from the beginning to the end of the deep-drawing process. Especially in the case of flat drawn parts or even in the case of complicated shaped part geometries, it is absolutely necessary, at the beginning, to control higher sheet metal holding forces in specific areas of the blank holder area.
- the object of the present invention has been made to realize while avoiding the disadvantages mentioned a computer-aided, process-capable, hydroelastic deep drawing, in which the according to the shape geometry of the workpiece arranged pressure cylinder piston assemblies for the sheet holder plate field of action to activate and with an exact force profile control without disturbance amplitudes to achieve the benefits and effects of a rubber-elastic Ziehkissenystems; Furthermore, the task is to be able to transmit larger forces via a cylinder and this even if additional larger eccentric loads per cylinder unit occur, as well as to create a simple and inexpensive thermoforming device.
- the stationary embodiment of the thermoforming device according to the invention is in particular conceptually simpler and thus less expensive than thermoforming forming presses with a mobile die cushion plate or a multipoint drawing cushion.
- the Kurzhubkolbenzylindersysteme work per force field in a stationary arrangement low-noise and reliable. This also applies to stationarily arranged mating cylinder for the drawing punch movement.
- the measures and features of the invention it is also particularly successful for several fields of action of the blank holder plate to understand the process advantage of a rubber-elastic blank holder die cushion system, but with the advantage and the possibility of computer-aided process control, the control of the Kurzhubkolben-cylinder systems for the force action fields both the same as well as with different pressure depending on the molding, is possible.
- the arrangement of the Kurzhubkolben-cylinder systems in the table top or below the table top can be carried out an exemption of the molded part from the drawing punch for safe removal of molded parts.
- the arrangement of Kurzhubkolben cylinder action fields in kinematic Inversion also allows a vertical clearance within the press between the ram and table top, because the accommodation of the Kurzhubkolben-cylinder systems is within the necessary clearance for the Ziehstempelhub.
- the ram force can be used as a base load acting on the drawing ring advantageous for a tilt-free force of the Kurzhubkolben-cylinder systems. As a result, a trouble-free process control in the independent hydraulic pressure action of the short-stroke force action fields is given advantageous.
- the hydraulic deep-drawing device according to the invention in combination with the short-stroke piston-cylinder system can be used with advantages both in hydraulic and in mechanical (crank) deep-drawing presses.
- Each spacer with the associated short-stroke piston is supported on the basis of the force action field on a large hydraulic cushion, so that unevenness on the draw ring automatically with the effect of a rubber-elastic die cushion, a uniform force around the drawing ring, are compensated.
- the arrangement of the force action fields can be chosen arbitrarily, which are required according to the drawing ring geometry and the tool and the force action fields with Regard to an exact force profile control over the pulling stroke servo-hydraulically controlled.
- each path position is controlled in a position-controlled manner and a parallel provision of the blank holder plate after the deep-drawing operation is achieved.
- the return stroke can be carried out at high speed, after a pre-programmable velocity profile (acceleration and deceleration) for demolding the drawn part.
- the advantage here is that the large-scale Kurzhubkolben cylinder arrangements automatically compensate for control errors in the synchronous drive. It is also advantageous that the short-stroke piston-cylinder arrangement are controlled servohydraulically with high precision and low costs with a small volume of oil, virtually no compression volume, for rapid movements.
- thermoforming device With the thermoforming device according to the invention, the possibility is created to use existing tools that were previously used for mechanical drawing pins, even on this hydraulic thermoforming universal without modification, with the possibility of a very high process capability of servohydraulic control and the use of different process steps, for Example switching from normal Deep-drawing process to counter-run, a very good range of applications allows.
- the diameter of the short-stroke cylinder 9 and the short-stroke piston 10 with the spacers 11 are executed in size and effective area approximately corresponding to the existing boundary of the force action fields.
- FIG. 5 for the ram is divided into two parts in an outer ram 8 with the sheet metal holder plate 12 and an inner plunger, which acts as a drawing punch 13 with its own drive executed.
- the first Embodiment after FIG. 1 considered to be advantageous in which the drawing punch acts upward.
- FIGS. 5 and 6 show a variation in the arrangement of the Kurzhubkolben-cylinder systems 20 in the upper plunger 8, for example, when used as a double-acting press 1 from above, the arrangement of the Kurzhubkolben 10 also according to the force action fields structured with larger Kurzhubkolben 10 Kurzhubzylindern 9 is executed.
- FIG. 2 shows a plan view of the table top 6 after FIG. 1 , with the Kurzhubkolben-cylinder systems 20, the drawing punch 5 and the workpiece 7. With 21 several variants of the producible pelvic geometries are located.
- FIG. 3 The enlarged view of a Kurzhubkolben-cylinder system 20 is in the FIG. 3 shown. It shows the short-stroke piston 9 integrated in the table top 6 and guided in seals 17 and in guide rings 18. However, the power transmission to the forming bolt 15 takes place via a long guide 11 in a guide bushes 16 guided long distance piece 11 with hardened wear plate 14. The forming bolt 15 can rest with an eccentricity L to the central axis on the wear plate 14. If necessary, two or more mold bolts 15 may be provided.
- the short-stroke cylinder 9 is about 200 to 250 mm in diameter larger than the previously executed short-stroke cylinder and therefore can also generate forces up to 80 to.
- the mold bolt 15 can also be designed as an angle iron.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Lubricants (AREA)
- Press Drives And Press Lines (AREA)
- Micromachines (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Centrifugal Separators (AREA)
Claims (12)
- Dispositif d'emboutissage hydroélastique pour l'emboutissage de pièces en tôle à mettre en forme, avec une plaque de maintien de la tôle (12) soutenue vis-à-vis de cylindres de pression et de pistons de pression hydrauliques et avec un poinçon d'emboutissage (5) guidé de façon à pouvoir se déplacer dans le sens d'emboutissage, qui s'appuie sur au moins un piston guidé dans un cylindre et pouvant être soumis à un fluide hydraulique et avec un poussoir (8) guidé dans le chapiteau supérieur de manière à pouvoir se déplacer vers le haut et le bas,
dans lequel sont prévues pour le dispositif d'emboutissage hydroélastique, afin de soutenir et de mettre en charge la plaque de maintien de la tôle (12), plusieurs zones d'application de la force dont le nombre et la superficie peuvent être choisis autour d'un ou plusieurs poinçons d'emboutissage (5),
dans lequel chaque zone d'application de la force est associée à un système de vérin à faible course (20) intégré de façon stationnaire et formé d'un cylindre à faible course (9) et d'un piston à faible course (10) avec au moins un goujon de formage (15) correspondant, caractérisé en ce quea) une pièce d'écartement (11) longue et de surface étendue par rapport aux cylindres à faible course (9) est soutenue de manière à empêcher son basculement,b) la pièce d'écartement (11) est guidée pour cela de manière à empêcher son basculement dans le plateau de table (6) ou dans le poussoir (8) et au moins un goujon de formage (15) est disposé sur la pièce d'écartement (11) de façon à pouvoir être appuyé de manière centrée ou excentrée sur la plaque de maintien de la tôle (12), etc) les pistons à faible course (10) et leurs pièces d'écartement (11) ont un diamètre ou des surfaces d'action correspondant approximativement à la taille du contour des zones d'application de la force. - Dispositif d'emboutissage hydroélastique selon la revendication 1, caractérisé en ce qu'une disposition différente des goujons de formage (15) sur les surfaces d'action des pièces d'écartement (11) permet une adaptation à des pièces (7) similaires dans une gamme de pièces.
- Dispositif d'emboutissage hydroélastique selon la revendication 1 ou 2, caractérisé en ce que le guidage sans risque de basculement des pièces d'écartement (11) dans le plateau de table (6) ou dans le poussoir (8) est assuré par deux douilles de guidage (16).
- Dispositif d'emboutissage hydroélastique selon une ou plusieurs des revendications 1 à 3, caractérisé en ce que les pièces d'écartement (11) présentent du côté des goujons de formage (15) une plaque d'usure (14).
- Dispositif d'emboutissage hydroélastique selon une ou plusieurs des revendications 1 à 4, caractérisé en ce que les cylindres à faible course (9) ont un diamètre de 200 à 250 mm.
- Dispositif d'emboutissage hydroélastique selon une ou plusieurs des revendications 1 à 5, caractérisé en ce que les pièces d'écartement (11) ont un diamètre de 300 mm.
- Dispositif d'emboutissage hydroélastique selon une ou plusieurs des revendications 1 à 6, caractérisé en ce que les goujons de formage (15) ont une forme adaptée et correspondant au contour de la bague d'étirage associée.
- Dispositif d'emboutissage hydroélastique selon une ou plusieurs des revendications 1 à 7, caractérisé en ce que le ou les poinçons d'emboutissage (5) sont disposés de façon stationnaire pour agir de bas en haut à l'intérieur ou en dessous du plateau de table (6).
- Dispositif d'emboutissage hydroélastique selon une ou plusieurs des revendications 1 à 8, caractérisé en ce que le ou les poinçons d'emboutissage (5) sont disposés de façon stationnaire pour agir de haut en bas à l'intérieur du poussoir (8) en deux parties.
- Dispositif d'emboutissage hydroélastique selon une ou plusieurs des revendications 1 à 9, caractérisé en ce que les systèmes de vérin à faible course (20) sont disposés de façon stationnaire dans le plateau de table (6).
- Dispositif d'emboutissage hydroélastique selon une ou plusieurs des revendications 1 à 10, caractérisé en ce que les vérins à faible course (20) sont intégrés de façon stationnaire dans le poussoir (8) extérieur.
- Dispositif d'emboutissage hydroélastique selon une ou plusieurs des revendications 1 à 11, caractérisé en ce que chaque zone d'application de la force peut être actionnée indépendamment de façon hydraulique par un vérin à faible course (20)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10210573A DE10210573A1 (de) | 2002-03-11 | 2002-03-11 | Hydroelastische Tiefzieheinrichtung |
DE10210573 | 2002-03-11 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1344585A2 EP1344585A2 (fr) | 2003-09-17 |
EP1344585A3 EP1344585A3 (fr) | 2005-07-27 |
EP1344585B1 true EP1344585B1 (fr) | 2008-05-07 |
Family
ID=27762852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03005517A Expired - Lifetime EP1344585B1 (fr) | 2002-03-11 | 2003-03-11 | Dispositif d'emboutissage profond hydroélastique |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1344585B1 (fr) |
AT (1) | ATE394179T1 (fr) |
DE (2) | DE10210573A1 (fr) |
DK (1) | DK1344585T3 (fr) |
ES (1) | ES2307843T3 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004006126B4 (de) * | 2004-02-07 | 2006-12-28 | Horst Baltschun | Presse mit verriegeltem Stößel |
DE102004059141A1 (de) * | 2004-12-08 | 2006-06-14 | Wieber, Christian, Dipl.-Ing.(FH), Batu Caves | Hydraulische Presse |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19641411A1 (de) * | 1996-10-08 | 1998-04-09 | Dieffenbacher Gmbh Maschf | Hydraulische Tiefzieheinrichtung |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3022844A1 (de) * | 1980-06-19 | 1982-01-07 | Uniplanung Metall- und Kunststoffengineering GmbH & Co KG, 7552 Durmersheim | Einrichtung an werkzeugen oder pressen zum ziehen von blechformteilen |
DE3333687A1 (de) * | 1983-09-17 | 1985-03-28 | Uniplanung Metall- und Kunststoffengineering GmbH & Co KG, 7552 Durmersheim | Einrichtung an werkzeugen oder pressen zum ziehen von blechformteilen |
DE4112656A1 (de) * | 1990-04-23 | 1991-10-24 | Mueller Weingarten Maschf | Zieheinrichtung in einer presse zum ziehen von blechformteilen |
DE4016838A1 (de) * | 1990-05-25 | 1991-11-28 | Smg Sueddeutsche Maschinenbau | Ziehapparat in einer presse |
DE4100206A1 (de) * | 1991-01-06 | 1992-07-09 | Dieffenbacher Gmbh Maschf | Hydroelastische tiefzieheinrichtung |
EP0806256B1 (fr) * | 1996-05-06 | 1999-11-10 | Müller-Weingarten AG | Procédé de contrÔle du coulement de matériau pendant l'emboutissage des pièces de tÔle et dispositif pour la mise en oeuvre du procédé |
DE19702636A1 (de) * | 1997-01-25 | 1998-07-30 | Erhard Reitter | Werkzeug zum Ziehen von Blechformteilen |
-
2002
- 2002-03-11 DE DE10210573A patent/DE10210573A1/de not_active Withdrawn
-
2003
- 2003-03-11 ES ES03005517T patent/ES2307843T3/es not_active Expired - Lifetime
- 2003-03-11 DK DK03005517T patent/DK1344585T3/da active
- 2003-03-11 EP EP03005517A patent/EP1344585B1/fr not_active Expired - Lifetime
- 2003-03-11 AT AT03005517T patent/ATE394179T1/de not_active IP Right Cessation
- 2003-03-11 DE DE50309758T patent/DE50309758D1/de not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19641411A1 (de) * | 1996-10-08 | 1998-04-09 | Dieffenbacher Gmbh Maschf | Hydraulische Tiefzieheinrichtung |
Also Published As
Publication number | Publication date |
---|---|
DE50309758D1 (de) | 2008-06-19 |
EP1344585A3 (fr) | 2005-07-27 |
ATE394179T1 (de) | 2008-05-15 |
DE10210573A1 (de) | 2003-10-02 |
DK1344585T3 (da) | 2008-09-08 |
ES2307843T3 (es) | 2008-12-01 |
EP1344585A2 (fr) | 2003-09-17 |
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