EP1526931A1 - Verfahren zur materialflusssteuerung beim tiefziehen von blechen und tiefziehwerkzeug - Google Patents
Verfahren zur materialflusssteuerung beim tiefziehen von blechen und tiefziehwerkzeugInfo
- Publication number
- EP1526931A1 EP1526931A1 EP03764920A EP03764920A EP1526931A1 EP 1526931 A1 EP1526931 A1 EP 1526931A1 EP 03764920 A EP03764920 A EP 03764920A EP 03764920 A EP03764920 A EP 03764920A EP 1526931 A1 EP1526931 A1 EP 1526931A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- sheet metal
- deep
- holder
- die
- 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.)
- Granted
Links
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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/22—Deep-drawing with devices for holding the edge of the blanks
Definitions
- the invention relates to a method for material flow control in the deep-drawing of sheet metal, preferably of high-strength steels and / or multi-phase steels or of aluminum, according to the preamble of claim 1, and to a deep-drawing tool according to the preamble of claim 4.
- EP 806 256 B1 also discloses a method for controlling the flow of material when drawing workpieces such as shaped sheet metal parts, the frictional force between the workpiece and the hold-down device being measured via a friction force sensor and serving as a control variable for a hold-down force.
- a segmented hold-down is also used to regulate the hold-down force of individual segments of the hold-down device distributed over the circumference. This solution is also relatively complicated.
- the invention is therefore based on the object of proposing a generic method for controlling the deep-drawing of sheet metal and a corresponding deep-drawing tool, in which the height adjustment by means of drawing rods and the complex friction force sensors can be dispensed with.
- this is first, i.e. Before the actual drawing process with the closing of the upper and lower sheet metal holders, a Z-shaped shut-off step is embossed into the sheet edge (see feature a), which is then maintained during the drawing of the basic shape, whereby a complete shut-off step is brought about by the compressed sheet metal holders and Sheet is stretched out from the inside (see feature b). During the further drawing process, the height of the shut-off stage is finally reduced, thereby facilitating the sheet run-on from the outside (cf. feature c).
- the sheet inhibition can be increased overall from the outside and, at the end of the deep-drawing process, by reducing the height of the shut-off stage by mechanically controlling the drawing stage, the sheet inhibition can be reduced and even completely canceled, so that the sheet follow-up takes place exclusively from the outside in.
- the method according to the invention can also be used by reversing the step for the reverse case, by pulling at the beginning of the process without a blocking step as described in claim 3 and only embossing a blocking step with the help of the sheet metal holder during the deep-drawing process. It is only at the end that the sheet run-on is inhibited with the help of the blocking stage.
- This can be of advantage both in deep-drawing processes with strong local deformation, where material has to be “presented”, and in sheet metal materials with low elongation at break, such as aluminum.
- the constructive solution provides a deep-drawing tool according to claim 4, in which at least one sheet metal holder, preferably the lower sheet metal holder, is divided along the locking step into an inner and an outer ring and at least one of the rings is movable relative to the other in the holding direction.
- the two sheet metal holders arranged side by side can form an adjustable shut-off step for the edge of the sheet and can be pressed against a corresponding fixed step of the counter-holder in order to achieve the desired sheet metal inhibition.
- the outer ring in the holding direction relative to the inner ring the step can be reduced from the initial height with maximum locking effect to any desired drawing depth in extreme cases to zero.
- this process can also be reversed by first working practically without a barrier step between the inner and outer sheet metal holder and then by increasing the step between the two rings, the effect of the barrier step is switched on and increased to the maximum effect until the end.
- a deep-drawing tool with a controllable locking stage is achieved by the two-part sheet metal holder according to the invention and the relative movement of the outer ring with respect to the inner ring.
- the die and the upper sheet metal holder can also be moved relative to one another.
- This drawing tool can be used in practically all conventional presses with a controlled or delayed drawing cushion.
- FIG. 1 shows a section through the deep-drawing tool according to the invention between head plate 2 and base plate 3 of a press
- Fig. 2 is an enlarged view of the central area in Fig. 1 and
- Fig. 3 corresponding to the representation of FIG. 1, the controllable blocking stage in five different phases.
- the sheet 1 is shown before the deep-drawing process with the sheet edge la as a dashed line with the shut-off stage 11.
- the sheet metal edge lb is drawn with a solid line.
- the sheet 1 is located between the deep-drawing die 4 and the die 5, which are arranged between the top plate 2 and the base plate 3 of a conventional press.
- the base plate 3 is fixed in a stationary manner in the usual way, while the head plate 2 is vertically movable for the deep-drawing process.
- the upper sheet metal holder 13, which is movable relative to the die 5, has a step 16 on its underside, which corresponds to the shut-off step 11 of the sheet edge la.
- the upper sheet metal holder 13 is acted upon by the spring force 9, which is also referred to as upper air, during the deep-drawing process and is pressed against the sheet metal edge.
- the inner plate holder 6 is pressed by the spring force 8 and the outer plate holder 7 by the stroke-dependent counterforce 10 from below against the edge of the plate 1.
- the punch 4 has a bead 12 and the die 5 has a corresponding nose 14, which is shown in FIG. 2 in particular in the upper (dashed line) and the lower position.
- Phase 1 Close the sheet metal holder
- a shut-off step 11 with a maximum step height 11.1 is embossed into the sheet edge la via the upper sheet metal holder 13 acted upon with upper air 9 and the lower sheet metal holders 6, 7 acting with lower air 8.
- the bottom of the outer sheet holder 7a lies on the
- I sheet metal la sheet edge (dashed line, before the deep-drawing process) lb sheet edge (solid line, after the deep-drawing process) 2 head plate (vertically movable)
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10233008A DE10233008A1 (de) | 2002-07-20 | 2002-07-20 | Verfahren zur Materialflusssteuerung beim Tiefziehen von Blechen und Tiefziehwerkzeug |
DE10233008 | 2002-07-20 | ||
PCT/EP2003/006305 WO2004009263A1 (de) | 2002-07-20 | 2003-06-14 | Verfahren zur materialflusssteuerung beim tiefziehen von blechen und tiefziehwerkzeug |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1526931A1 true EP1526931A1 (de) | 2005-05-04 |
EP1526931B1 EP1526931B1 (de) | 2006-08-02 |
Family
ID=30128192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03764920A Expired - Lifetime EP1526931B1 (de) | 2002-07-20 | 2003-06-14 | Verfahren zur materialflusssteuerung beim tiefziehen von blechen und tiefziehwerkzeug |
Country Status (7)
Country | Link |
---|---|
US (1) | US7086265B2 (de) |
EP (1) | EP1526931B1 (de) |
AT (1) | ATE334762T1 (de) |
AU (1) | AU2003246437A1 (de) |
DE (2) | DE10233008A1 (de) |
ES (1) | ES2268430T3 (de) |
WO (1) | WO2004009263A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009124860A1 (de) * | 2008-04-07 | 2009-10-15 | Thyssenkrupp Steel Ag | Verfahren zur materialflusssteuerung beim tiefziehen eines werkstücks und tiefziehvorrichtung |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AUPQ052199A0 (en) * | 1999-05-21 | 1999-06-17 | Wiltin Pty Ltd | Joining arrangements for structural members |
DE10350089B4 (de) * | 2003-10-27 | 2007-04-05 | Alcan Deutschland Gmbh | Tiefziehvorrichtung zum Tiefziehen eines Werkstückes |
US20060283130A1 (en) * | 2005-06-07 | 2006-12-21 | William Andrews | Structural members with gripping features and joining arrangements therefor |
US7594331B2 (en) * | 2005-11-05 | 2009-09-29 | Wiltin Pty. Ltd. | Method of production of joining profiles for structural members |
US20090293405A1 (en) * | 2005-11-05 | 2009-12-03 | Andrews William J | Method of production of joining profiles for structural members |
US20070209306A1 (en) * | 2006-03-08 | 2007-09-13 | Trakloc International, Llc | Fire rated wall structure |
DE102009015671B4 (de) * | 2009-03-31 | 2019-12-12 | Bayerische Motoren Werke Aktiengesellschaft | Tiefziehwerkzeug mit Rückhalteeinrichtung und Kraftstellelement sowie Verwendung |
US8061099B2 (en) | 2009-05-19 | 2011-11-22 | Tsf Systems, Llc | Vertical deflection extension end member |
DE102009053365A1 (de) * | 2009-11-14 | 2011-05-19 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Herstellung eines einbaufertigen komplexen Blechformteils |
DE102009053366A1 (de) * | 2009-11-14 | 2011-05-19 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Herstellung eines Profilbauteils aus einem Blechmaterial |
DE102010045281A1 (de) * | 2010-08-31 | 2012-03-01 | Giw Gesellschaft Für Innovative Werkzeugsysteme Mbh | Verfahren und Vorrichtung zum Umformen eines Werkstücks |
US9174259B2 (en) * | 2011-01-19 | 2015-11-03 | Ford Global Technologies, Llc | Method and apparatus for sharp flanging and trimming sheet metal panels |
US9149854B2 (en) | 2011-05-04 | 2015-10-06 | Fca Us Llc | Stamping apparatus |
US10160024B2 (en) * | 2012-06-07 | 2018-12-25 | Toyo Seikan Group Holdings, Ltd. | Deep-drawing method and forming die therefor |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US368526A (en) * | 1887-08-16 | Die for forming metallic clock-cases | ||
US1035984A (en) * | 1911-02-25 | 1912-08-20 | Daniel Malde | Can forming and trimming machine. |
US2075847A (en) * | 1930-05-16 | 1937-04-06 | American Can Co | Art of drawing |
JPS56160836A (en) * | 1980-05-13 | 1981-12-10 | Nissan Motor Co Ltd | Pressure die for drawing |
JPS59163032A (ja) * | 1983-03-09 | 1984-09-14 | Nissan Motor Co Ltd | 絞り型 |
JP2663707B2 (ja) * | 1990-11-09 | 1997-10-15 | 日産自動車株式会社 | 絞りプレス型 |
US5600991A (en) * | 1995-02-10 | 1997-02-11 | Ogihara America Corporation | Stretch controlled forming mechanism and method for forming multiple gauge welded blanks |
JPH0929349A (ja) * | 1995-07-18 | 1997-02-04 | Toyota Motor Corp | 可変ビードを利用した絞り成形方法および装置 |
DE19718841A1 (de) * | 1996-05-06 | 1997-11-13 | Mueller Weingarten Maschf | Verfahren zur Materialflußsteuerung beim Ziehen von Blechformteilen sowie Vorrichtung zur Durchführung des Verfahrens |
UY25210A1 (es) * | 1997-10-16 | 1999-04-09 | Cosma Int Inc | Troquel estampador de deformacion para la estampacion de paneles de carroceria de vehiculos a motor. |
-
2002
- 2002-07-20 DE DE10233008A patent/DE10233008A1/de not_active Withdrawn
-
2003
- 2003-06-14 DE DE50304496T patent/DE50304496D1/de not_active Expired - Lifetime
- 2003-06-14 AT AT03764920T patent/ATE334762T1/de not_active IP Right Cessation
- 2003-06-14 ES ES03764920T patent/ES2268430T3/es not_active Expired - Lifetime
- 2003-06-14 US US10/512,803 patent/US7086265B2/en not_active Expired - Fee Related
- 2003-06-14 AU AU2003246437A patent/AU2003246437A1/en not_active Abandoned
- 2003-06-14 EP EP03764920A patent/EP1526931B1/de not_active Expired - Lifetime
- 2003-06-14 WO PCT/EP2003/006305 patent/WO2004009263A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO2004009263A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009124860A1 (de) * | 2008-04-07 | 2009-10-15 | Thyssenkrupp Steel Ag | Verfahren zur materialflusssteuerung beim tiefziehen eines werkstücks und tiefziehvorrichtung |
US9327332B2 (en) | 2008-04-07 | 2016-05-03 | Thyssenkrupp Steel Europe Ag | Method for controlling the flow of material when deep-drawing a workpiece, and deep-drawing device |
Also Published As
Publication number | Publication date |
---|---|
ATE334762T1 (de) | 2006-08-15 |
ES2268430T3 (es) | 2007-03-16 |
US7086265B2 (en) | 2006-08-08 |
AU2003246437A1 (en) | 2004-02-09 |
WO2004009263A1 (de) | 2004-01-29 |
EP1526931B1 (de) | 2006-08-02 |
US20050217344A1 (en) | 2005-10-06 |
DE50304496D1 (de) | 2006-09-14 |
DE10233008A1 (de) | 2004-02-12 |
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