EP1344585A2 - Dispositif d'emboutissage profond hydroélastique - Google Patents

Dispositif d'emboutissage profond hydroélastique Download PDF

Info

Publication number: EP1344585A2
Authority: EP; European Patent Office
Prior art keywords: short; stroke; cylinder; deep; sheet metal
Prior art date: 2002-03-11
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

Application number

EP03005517A

Other languages

German (de)

English (en)

Other versions

EP1344585B1 (fr

EP1344585A3 (fr

Inventor

Klaus-Jürgen Pahl

Friedrich B Bielfeldt

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Dieffenbacher GmbH and Co KG

Original Assignee

Maschinenfabrik J Dieffenbacher GmbH and Co

Dieffenbacher GmbH and Co KG

Dieffenbacher GmbH Maschinen und Anlagenbau

Priority date (The priority date 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 date listed.)

2002-03-11

Filing date

2003-03-11

Publication date

2003-09-17

2003-03-11 Application filed by Maschinenfabrik J Dieffenbacher GmbH and Co, Dieffenbacher GmbH and Co KG, Dieffenbacher GmbH Maschinen und Anlagenbau filed Critical Maschinenfabrik J Dieffenbacher GmbH and Co

2003-09-17 Publication of EP1344585A2 publication Critical patent/EP1344585A2/fr

2005-07-27 Publication of EP1344585A3 publication Critical patent/EP1344585A3/fr

2008-05-07 Application granted granted Critical

2008-05-07 Publication of EP1344585B1 publication Critical patent/EP1344585B1/fr

2023-03-11 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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
- 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 hydroelastic deep-drawing device Presses for drawing sheet metal parts according to the preamble of Claim 1.
DE-PS 30 22 844 already has a deep-drawing device on tools or presses for drawing sheet metal parts are known, the one of several Printing cylinders and with axially movable in them, with Current pressure medium acted upon the existing drawing cushion for the piston Support a sheet metal holder plate and with another, one in Drawing direction movably guided die cushion receiving die is equipped, the impression cylinder with the impression cylinders of the Sheet support supporting die cushion connected via flow paths and displaced from these pressure cylinders with the drawing process Flow pressure media are acted upon.
the invention has set itself the task of avoiding the above Disadvantages of a computer-aided, process-capable, hydroelastic deep drawing to realize, in which the according to the shape geometry of the Workpiece arranged pressure cylinder piston assemblies for that Activate sheet metal holder plate field of action and with an exact Force profile control without disturbance amplitudes is to realize the advantages and achieve effects of a rubber-elastic die cushion system; further the task is to apply greater forces over a cylinder to be able to transmit and this even if additional larger eccentric Loads occur per cylinder unit, as well as a simple and to create low-cost deep-drawing equipment.
the stationary design of the deep-drawing device according to the invention is, in particular, conceptually simpler and therefore less expensive than deep-drawing forming presses with a mobile die cushion plate or a multi-point die cushion.
the short-stroke piston cylinder systems work in a stationary arrangement for each force action field with less interference and more reliable functions. This also applies to stationary counter-rotating cylinders for the punch movement.
the measures and features according to the invention have also made it possible, in particular, to understand the process advantage of a rubber-elastic sheet holder die cushion system for several fields of action of the sheet metal holder plate, but with the advantage and the possibility of computer-aided process control, with the control of the short-stroke piston-cylinder systems for the force fields of action both with same as well as with different pressure depending on the molded part.
the Arrangement of the short-stroke piston-cylinder fields of action in kinematic Conversions also allow vertical freedom within the press between ram and table top, because the short-stroke piston-cylinder systems are accommodated within the necessary space for the Die stroke.
the ram force can act as a base load on the pull ring effective for a tilt-free force application of the short-stroke piston-cylinder systems be used. This is a trouble-free Process control in the independent hydraulic Pressure action of the short-stroke force fields of action advantageously given.
the hydraulic deep-drawing device according to the invention in combination with The short stroke piston cylinder system has advantages in both hydraulic can also be used in mechanical (crank) deep-drawing presses.
Each spacer with the associated short-stroke piston is supported in the frame of the force field on a large hydraulic cushion, so that Bumps on the drawing ring automatically with the effect of a rubber elastic Drawing cushion, an even application of force around the drawing ring, be balanced.
There is a short-stroke piston-cylinder system for every force field assigned the arrangement of the force fields can be chosen arbitrarily, according to the drawing ring geometry and the tool are required and the force fields are with Consideration of an exact force profile control over the drawing stroke servo-hydraulically controlled.
each position is controlled in a position-controlled manner and the sheet metal holder plate is reset in parallel after the deep-drawing operation.
the return stroke can take place at high speed, according to a pre-programmable speed profile (acceleration and deceleration) for demolding the drawn part.
the advantage here is that the large-area short-stroke piston-cylinder arrangements automatically compensate for control errors in synchronous travel.
Another advantage is that the short-stroke piston-cylinder arrangement is servo-hydraulically controlled for fast movements with high precision and low costs with a small oil volume, practically without compression volume.
the diameter of the short-stroke cylinder 9 and the short-stroke piston 10 with the Spacers 11 are approximately the same in size and effective area existing boundary of the force fields.
the ram is divided in two in an outer ram 8 with the Sheet metal holder plate 12 and an inner plunger, which as a drawing punch 13 own drive, executed.
the first is 1 to be regarded as advantageous, in which the Pull stamp upwards.
Figures 5 and 6 show a variation in the arrangement of the Short-stroke piston-cylinder systems 20 in the upper plunger 8, for example at Use as a double-acting press 1 from above, the arrangement the short-stroke piston 10 also corresponds to the force fields articulated with larger short-stroke pistons 10 short-stroke cylinders 9 is executed.
Figure 2 shows a plan view of the table top 6 of Figure 1, with the Short-stroke piston-cylinder systems 20, the punch 5 and the workpiece 7. At 21 there are several variants of the basin geometries that can be produced located.
FIG Figure 3 The enlarged representation of a short-stroke piston-cylinder system 20 is shown in FIG Figure 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.
the shaped bolt 15 can with an eccentricity L to the central axis on the Place the closure plate 14 on. If necessary, two and more can also be used Shaped pin 15 may be provided.
the short-stroke cylinder 9 is larger than about 200 to 250 mm in diameter the previously used short-stroke cylinders and can therefore also Generate forces up to 80 tons.
the support for the shaped bolts 15 is also included a diameter of about 300 mm larger than the usual Short stroke cylinder 9 and thus leaves more scope for positioning from the form bolts 15. Due to the large guide length of the spacer 11 can even with this eccentric load 80 tons without tipping to be dealt with.
the arrangement options are illustrated with the Shape of the bolts 15 on the spacer 11. If necessary, the Shaped pin 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)
Micromachines (AREA)
Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Centrifugal Separators (AREA)
Press Drives And Press Lines (AREA)
Lubricants (AREA)

EP03005517A 2002-03-11 2003-03-11 Dispositif d'emboutissage profond hydroélastique Expired - Lifetime EP1344585B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE10210573		2002-03-11
DE10210573A DE10210573A1 (de)	2002-03-11	2002-03-11	Hydroelastische Tiefzieheinrichtung

Publications (3)

Publication Number	Publication Date
EP1344585A2 true EP1344585A2 (fr)	2003-09-17
EP1344585A3 EP1344585A3 (fr)	2005-07-27
EP1344585B1 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)

* Cited by examiner, † Cited by third party
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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
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
DE4143683B4 (de) *	1991-01-06	2006-03-09	Dieffenbacher Gmbh + Co. Kg	Hydroelastische Tiefzieheinrichtung
DE19718841A1 (de) *	1996-05-06	1997-11-13	Mueller Weingarten Maschf	Verfahren zur Materialflußsteuerung beim Ziehen von Blechformteilen sowie Vorrichtung zur Durchführung des Verfahrens
DE19641411A1 (de) *	1996-10-08	1998-04-09	Dieffenbacher Gmbh Maschf	Hydraulische Tiefzieheinrichtung
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 DE DE50309758T patent/DE50309758D1/de not_active Expired - Lifetime
- 2003-03-11 ES ES03005517T patent/ES2307843T3/es not_active Expired - Lifetime
- 2003-03-11 DK DK03005517T patent/DK1344585T3/da active
- 2003-03-11 AT AT03005517T patent/ATE394179T1/de not_active IP Right Cessation
- 2003-03-11 EP EP03005517A patent/EP1344585B1/fr not_active Expired - Lifetime

Also Published As

Publication number	Publication date
ATE394179T1 (de)	2008-05-15
DE50309758D1 (de)	2008-06-19
ES2307843T3 (es)	2008-12-01
DK1344585T3 (da)	2008-09-08
EP1344585B1 (fr)	2008-05-07
DE10210573A1 (de)	2003-10-02
EP1344585A3 (fr)	2005-07-27

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DE29817969U1 (de)	1999-02-18	Hydraulisches Antriebssystem für Stößel von Schmiedepressen oder Schmiedemaschinen
AT392023B (de)	1991-01-10	Verfahren zum biegen von blechstuecken
DE10339004B4 (de)	2006-09-28	Hydraulische Presse
DE4122128A1 (de)	1993-01-07	Hydroelastische tiefzieheinrichtung
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