EP2998042A1 - Pressing tool - Google Patents
Pressing tool Download PDFInfo
- Publication number
- EP2998042A1 EP2998042A1 EP15182161.8A EP15182161A EP2998042A1 EP 2998042 A1 EP2998042 A1 EP 2998042A1 EP 15182161 A EP15182161 A EP 15182161A EP 2998042 A1 EP2998042 A1 EP 2998042A1
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- EP
- European Patent Office
- Prior art keywords
- sheet metal
- tool
- mold
- pressing tool
- elastic material
- 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
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 72
- 239000002184 metal Substances 0.000 claims abstract description 72
- 238000012876 topography Methods 0.000 claims abstract description 34
- 239000013013 elastic material Substances 0.000 claims abstract description 28
- 230000005489 elastic deformation Effects 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 30
- 239000007769 metal material Substances 0.000 claims description 4
- 239000013536 elastomeric material Substances 0.000 claims description 3
- 230000003993 interaction Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000002028 premature Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000007493 shaping process Methods 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/26—Deep-drawing for making peculiarly, e.g. irregularly, shaped articles
-
- 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 trained according to the preamble of claim 1 pressing tool for producing a Blechumformteils.
- a pressing tool of the type mentioned is, for example DE 196 21 942 C1 known.
- this pressing tool provided for forming a Blechumformteils topography of a tool part surveys in the form of ribs or nubs as a positive shape and has the intended for forming the Blechumformteils topography of the other tool part form negative to the surveys opposite recesses in the form of grooves or troughs as a negative mold on to form on the sheet metal forming part in moving the two tool parts together of the elevations and the recesses a fine structure with bump-shaped indentations.
- this known pressing tool and elastic inserts can be provided instead of the recesses in the other tool part.
- the elastic inserts are then pressed in by the pressure of the elevations, so that the sheet metal material can bulge in these indentations in the elastic inserts.
- the invention has the object of providing a pressing tool according to the preamble of claim 1 so that it can be produced sharper pronounced contours such as sharp edges or design lines on a sheet metal forming.
- a pressing tool for producing a Blechumformteils on a first tool part and a second tool part The first tool part has a first topography for forming the sheet metal forming part from a sheet metal part, and the second tool part has a second topography for forming the sheet metal forming part.
- the first and second topographies are matched, i. e.g. formed substantially or approximately complementary to each other to give the sheet metal formed part by moving the two tool parts together of the two topographies a desired shape.
- One of the first and second topographies has a negative mold, and the other of the first and second topographies has a positive mold for pressing the sheet metal part for producing the sheet metal forming part when bringing the two tool parts into the negative mold.
- the pressing tool according to the invention is characterized in that the positive mold has an elastic material to press the sheet metal part for producing the Blechumformteils when moving the two tool parts under elastic deformation of the elastic material in the negative mold.
- the first and second topographies are formed by respective surfaces of the first and second tool parts which, upon contacting the sheet metal part, participate in the formation of the sheet metal forming part, and according to the desired shape of the sheet metal forming part, e.g. External radii, inner radii, protrusions, depressions or recesses and / or flat portions, etc. on.
- a positive shape for the purposes of the invention is considered a positive shape, a survey or a projection in the respective topography and is as a negative mold to a recess or a Return, which is opposite to the positive form, considered to receive the positive form.
- the flexible elastic material is provided on the positive mold so that, with elastic deformation of the elastic material, it can push the sheet metal part into the negative mold to produce the sheet metal forming part.
- the positive shape under contact area enlargement fits snugly against the surface of the sheet metal part in the forming area, so that the sheet metal part can be pressed optimally into the negative mold under the effect of high frictional forces between elastic material and sheet metal part.
- only the negative mold predetermines the contour to be produced on the sheet metal forming part on the negative mold side, and adapts the positive mold to the negative mold during the forming process.
- the elastic material comprises a polymer material.
- the elastic material comprises an elastomeric material and in particular a rubber material, such as e.g. Hard rubber material on.
- the elastic material is used as an insert part in a base material of the mold part provided with the positive mold.
- the first and second tool parts as base material preferably each comprise a metal material, such as e.g. a steel material and / or a cast iron material.
- the insert part formed with the elastic material is strip-shaped and inserted into the base material of the positive mold part such that a longitudinal edge portion of the insert part is made of the base material of the tool part by a predetermined amount, particularly 2 mm to 10 mm and preferably 2 mm to 5 mm, protruding. Due to the strip-like design of the insert part can be in a simple way for an elongated negative mold a Provide positive form according to the invention. A pressing pressure in the forming region of the negative mold and the positive mold can be advantageously adjusted by suitable dimensioning of the Vorstehencieses of the insert.
- the female mold has an inner radius to form a convex edge on one face side of the sheet metal forming part
- the positive mold has an outer radius formed by the elastic material to elasticize the sheet metal part for forming the sheet metal forming part when the two tool parts come together Deformation of the outer radius for forming the edge in the inner radius of the negative mold to press.
- the pressing tool is adapted for realizing a deep drawing operation on the sheet metal part, wherein the first tool part is formed as a stamp and has in its first topography the positive mold and the second tool part is formed as a die and in its second topography has the negative mold ,
- the sheet metal forming part is provided as the outer skin part of a vehicle body, wherein the negative mold and the positive mold are formed to form an edge-shaped design line or a light edge as the convex edge on an outer side of the sheet metal forming part.
- the pressing tool 1 is arranged to be formed from a platinum-shaped sheet metal part B, e.g. made of aluminum or steel by performing a deep drawing operation, a sheet metal forming part B 'with a desired shape.
- the sheet metal forming part B ' is provided as an outer skin part of a vehicle body (not completely shown), and particularly as an outer skin part of a vehicle side door of the vehicle body.
- the pressing tool 1 has a lower first tool part 10, which forms a punch of the pressing tool 1, and an upper second tool part 30, which forms a die of the pressing tool 1.
- Fig. 1 shows the two tool parts 10, 30 in an extended state, wherein the already preformed sheet metal part B between the tool parts 10, 30 is inserted into the pressing tool 1.
- Fig. 2 shows, however, the two tool parts 10, 30 in a contracted state with the brought into the desired shape Blechumformteil B 'in between.
- the first tool part (punch) 10 has a substantially convex or positive-shaped first topography 11 for forming the sheet-metal forming part B '.
- the second tool part (die) 30 has a substantially concave or negative-shaped second topography 31 for shaping the sheet-metal forming part B '.
- the first topography 11 and the second topography 31 are matched to one another, ie substantially or approximately complementary to one another in order to pass the sheet-metal forming part B 'through, as in FIG Fig. 2 Shown contraction of the two tool parts 10, 30 together with the two topographies 11, 31 to give the desired shape.
- the second tool part 30 has in its second topography 31 a negative mold 32 with a small inner radius to on a surface side (a later outer side or visible side) of the sheet metal forming part B 'a convex edge K' and in particular an edge-shaped design line or light edge like a Tornadoline with a small outer radius to form.
- the first tool part 10 has in its first topography 11 a formed with an elastic material 20 positive mold 12 having an outer radius to the sheet metal part B for producing the Blechumformteils B 'when moving the two tool parts 10, 30 under elastic deformation of the formed from the elastic material 20 outer radius for forming the edge K' in the inner radius of the Press negative mold 32.
- the outer radius of the positive mold 12 is greater than the inner radius of the negative mold 32.
- the inner radius of the negative mold 32 of the second tool part (die) 30 gives the conciseness or sharply defined contour of the edge K '(edge - shaped design line) Light edge) on the outside or visible side of the sheet metal forming part B '.
- the first and second tool parts 10, 30 are made as a base material each with a metal material such as a steel material and / or a cast iron material.
- the elastic material 20 is inserted into the base material of the first tool part 10 as a strip-shaped insert part (a longitudinal direction of the strip-shaped elastic material 20 runs perpendicular to the plane of the figure) so that a longitudinal edge section of the insert part defining the outer radius of the positive mold 12 is made from the base material of the first tool part 10 by a predetermined length Dimension (eg 2 mm to 10 mm and preferably 2 mm to 5 mm) protrudes.
- the elastic material 20 is a polymer material and in particular an elastomeric material.
- the elastic material 20 is a rubber material, in particular a hard rubber material.
- Fig. 3 illustrates for comparison the problem of insufficient recuperator or too large an outer diameter of an edge on the outside or preparechumformteils B "edge K" (edge-shaped line of design), as usual, the conciseness of the edge K "by a sharp contour as a small outer diameter of a positive mold 12 "(a sharp punch edge) is realized.
- the sharp contour of the positive mold 12 "leads to excessive stretching bending load in the forming area, which leads to a premature flow start of the sheet material (here eg aluminum), thereby weakening the material thickness of the sheet material in the forming area by approximately one third in the comparative sheet metal forming part B" and the outer diameter of the edge K "made on the outside of the comparative sheet metal forming part B" is larger than that of the positive mold 12 ".
- the edge K" produced on the comparative sheet metal forming part B "does not have a sufficiently sharp contour meet the quality requirements for a sharp light edge or design line.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Presswerkzeug (1) zum Herstellen eines Blechumformteils, mit einem ersten Werkzeugteil (10), welcher eine erste Topografie (11) zum aus einem Blechteil (B) Formen des Blechumformteils aufweist, und einem zweiten Werkzeugteil (30), welcher eine zweite Topografie (31) zum Formen des Blechumformteils aufweist, wobei die ersten und zweiten Topografien aufeinander abgestimmt sind, um dem Blechumformteil durch Zusammenfahren der beiden Werkzeugteile unter Zusammenwirkung der beiden Topografien eine gewünschte Form zu geben, und wobei eine von den ersten und zweiten Topografien eine Negativform (32) hat und die andere von den ersten und zweiten Topografien eine Positivform (12) hat, um das Blechteil zum Herstellen des Blechumformteils beim Zusammenfahren der beiden Werkzeugteile in die Negativform zu drücken. Um an dem Blechumformteil schärfer ausgeprägte Konturen wie scharfe Lichtkanten oder Designlinien herstellen zu können, weist die Positivform ein Elastikmaterial (20) auf, um das Blechteil zum Herstellen des Blechumformteils beim Zusammenfahren der beiden Werkzeugteile unter elastischer Verformung des Elastikmaterials in die Negativform zu drücken. A pressing tool (1) for producing a sheet-metal forming part, comprising a first tool part (10) having a first topography (11) for forming a sheet metal part from a sheet metal part (B) and a second tool part (30) having a second topography (31 ) for forming the sheet metal forming part, wherein the first and second topographies are matched to give the sheet metal forming part a desired shape by bringing the two tool parts together under the interaction of the two topographies, and wherein one of the first and second topographies is a negative mold (32) and the other of the first and second topographies has a positive mold (12) for pressing the sheet metal part for producing the sheet metal forming part when bringing the two tool parts into the negative mold. In order to be able to produce sharper pronounced contours such as sharp edges or design lines on the sheet metal forming part, the positive shape has an elastic material (20) for pressing the sheet metal part for producing the sheet metal part when the two tool parts move together, with elastic deformation of the elastic material into the negative mold.
Description
Die Erfindung betrifft ein gemäß dem Oberbegriff von Anspruch 1 ausgebildetes Presswerkzeug zum Herstellen eines Blechumformteils.The invention relates to a trained according to the preamble of
Ein Presswerkzeug der eingangsgenannten Art ist z.B. aus
Gemäß einer Ausgestaltung dieses bekannten Presswerkzeugs können anstelle der Ausnehmungen in dem anderen Werkzeugteil auch elastische Einlagen vorgesehen sein. Beim Umformprozess werden die elastischen Einlagen dann durch den Druck der Erhebungen eingedrückt, so dass das Blechmaterial sich beulenförmig in diese Eindrückungen in den elastischen Einlagen legen kann.According to one embodiment of this known pressing tool and elastic inserts can be provided instead of the recesses in the other tool part. During the forming process, the elastic inserts are then pressed in by the pressure of the elevations, so that the sheet metal material can bulge in these indentations in the elastic inserts.
In jüngster Zeit werden an Außenhautteilen (Blechumformteilen) von Fahrzeugkarosserien zunehmend Designelemente in Form von scharfen Lichtkanten oder Designlinien wie z.B. eine Tornadolinie auf einer Außenseite bzw. Sichtseite dieser vorgesehen. Soll nun mit einem wie aus
Dies begründet sich u.a. darin, dass es bei der dann erforderlichen scharf konturierten Ausbildung der Positivform, welche mit den die Negativform ausbildenden elastischen Einlagen zusammenwirkt, zu starker Streckbiegebelastung im Umformbereich kommt, welche zu einem vorzeitigen Fließbeginn des Blechmaterials führt. Im Ergebnis wird durch die scharfe Kontur der Positivform (wie eine scharfe bzw. mit kleinem Außenradius versehene Stempelkante) die Materialstärke des Blechmaterials im Umformbereich geschwächt und wird die scharfe Kontur der Positivform nicht ausreichend auf der der Positivform abgewandten Seite (Außenseite bzw. Sichtseite) des Blechteils abgebildet.This is due, inter alia, to the fact that in the then sharply contoured configuration of the positive mold, which interacts with the elastic inserts forming the negative mold, there is a strong stretch bending load in the forming area, which leads to premature flow start of the sheet material. As a result, the sharp contour of the positive shape (such as a sharp or small outer radius provided stamp edge) weakened the material thickness of the sheet material in the forming area and the sharp contour of the positive mold is not sufficiently on the side facing away from the positive mold (outside or visible side) of the sheet metal part mapped.
Der Erfindung liegt die Aufgabe zugrunde, ein Presswerkzeug gemäß dem Oberbegriff von Anspruch 1 so fortzubilden, dass damit an einem Blechumformteil schärfer ausgeprägte Konturen wie scharfe Lichtkanten oder Designlinien herstellbar sind.The invention has the object of providing a pressing tool according to the preamble of
Dies wird mit einem Presswerkzeug gemäß Anspruch 1 erreicht. Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen definiert.This is achieved with a pressing tool according to
Gemäß der Erfindung weist ein Presswerkzeug zum Herstellen eines Blechumformteils einen ersten Werkzeugteil und einen zweiten Werkzeugteil auf. Der erste Werkzeugteil weist eine erste Topografie zum aus einem Blechteil Formen des Blechumformteils auf, und der zweite Werkzeugteil weist eine zweite Topografie zum Formen des Blechumformteils auf. Die ersten und zweiten Topografien sind aufeinander abgestimmt, d.h. z.B. im Wesentlichen bzw. in etwa komplementär zueinander ausgebildet, um dem Blechumformteil durch Zusammenfahren der beiden Werkzeugteile unter Zusammenwirkung der beiden Topografien eine gewünschte Form zu geben. Eine von den ersten und zweiten Topografien hat eine Negativform, und die andere von den ersten und zweiten Topografien hat eine Positivform, um das Blechteil zum Herstellen des Blechumformteils beim Zusammenfahren der beiden Werkzeugteile in die Negativform zu drücken. Das erfindungsgemäße Presswerkzeug zeichnet sich dadurch aus, dass die Positivform ein Elastikmaterial aufweist, um das Blechteil zum Herstellen des Blechumformteils beim Zusammenfahren der beiden Werkzeugteile unter elastischer Verformung des Elastikmaterials in die Negativform zu drücken.According to the invention, a pressing tool for producing a Blechumformteils on a first tool part and a second tool part. The first tool part has a first topography for forming the sheet metal forming part from a sheet metal part, and the second tool part has a second topography for forming the sheet metal forming part. The first and second topographies are matched, i. e.g. formed substantially or approximately complementary to each other to give the sheet metal formed part by moving the two tool parts together of the two topographies a desired shape. One of the first and second topographies has a negative mold, and the other of the first and second topographies has a positive mold for pressing the sheet metal part for producing the sheet metal forming part when bringing the two tool parts into the negative mold. The pressing tool according to the invention is characterized in that the positive mold has an elastic material to press the sheet metal part for producing the Blechumformteils when moving the two tool parts under elastic deformation of the elastic material in the negative mold.
Im Sinne der Erfindung sind die ersten und zweiten Topografien von jeweiligen Flächen der ersten und zweiten Werkzeugteile gebildet, welche unter Kontaktierung des Blechteils an der Formung des Blechumformteils teilnehmen, und weisen gemäß der gewünschten Form des Blechumformteils z.B. Außenradien, Innenradien, Erhebungen bzw. Vorsprünge, Vertiefungen bzw. Rücksprünge und/oder ebene Abschnitte usw. auf.For the purposes of the invention, the first and second topographies are formed by respective surfaces of the first and second tool parts which, upon contacting the sheet metal part, participate in the formation of the sheet metal forming part, and according to the desired shape of the sheet metal forming part, e.g. External radii, inner radii, protrusions, depressions or recesses and / or flat portions, etc. on.
Im Sinne der Erfindung wird als Positivform eine Erhebung bzw. ein Vorsprung in der jeweiligen Topografie erachtet und wird als Negativform dazu eine Vertiefung bzw. ein Rücksprung, welche(r) der Positivform gegenüberliegt, zur Aufnahme der Positivform erachtet.For the purposes of the invention is considered a positive shape, a survey or a projection in the respective topography and is as a negative mold to a recess or a Return, which is opposite to the positive form, considered to receive the positive form.
Gemäß der Erfindung ist das flexible Elastikmaterial an der Positivform vorgesehen, so dass diese unter elastischer Verformung des Elastikmaterials das Blechteil in die Negativform hineindrücken kann, um das Blechumformteil herzustellen. Durch die elastische Verformung des Elastikmaterials schmiegt sich die Positivform unter Kontaktflächenvergrößerung eng an die Oberfläche des Blechteils im Umformbereich an, so dass das Blechteil unter Wirkung hoher Reibkräfte zwischen Elastikmaterial und Blechteil optimal in die Negativform hineindrückt werden kann. Mit anderen Worten gibt gemäß der Erfindung ausschließlich die Negativform die an dem Blechumformteil aufseiten der Negativform zu erzeugende Kontur vor und passt sich die Positivform beim Umformprozess an die Negativform an.According to the invention, the flexible elastic material is provided on the positive mold so that, with elastic deformation of the elastic material, it can push the sheet metal part into the negative mold to produce the sheet metal forming part. As a result of the elastic deformation of the elastic material, the positive shape under contact area enlargement fits snugly against the surface of the sheet metal part in the forming area, so that the sheet metal part can be pressed optimally into the negative mold under the effect of high frictional forces between elastic material and sheet metal part. In other words, according to the invention, only the negative mold predetermines the contour to be produced on the sheet metal forming part on the negative mold side, and adapts the positive mold to the negative mold during the forming process.
Somit lassen sich - unter Vermeidung von starker Streckbiegebelastung im Umformbereich und damit unter Vermeidung vorzeitigen Fließbeginns des Blechmaterials und einer Schwächung der Materialstärke des Blechmaterials im Umformbereich - an dem Blechumformteil auch schärfer ausgeprägte Konturen wie scharfe Lichtkanten oder Designlinien herstellen.Thus, while avoiding strong stretching bending stress in the forming area and thus avoiding premature flow start of the sheet material and a weakening of the material thickness of the sheet material in the forming area, sharper pronounced contours such as sharp edges or design lines can be produced on the sheet metal forming part.
Gemäß einer Ausführungsform der Erfindung weist das Elastikmaterial ein Polymermaterial auf. Bevorzugt weist das Elastikmaterial ein Elastomermaterial und insbesondere ein Gummimaterial wie z.B. Hartgummimaterial auf.According to one embodiment of the invention, the elastic material comprises a polymer material. Preferably, the elastic material comprises an elastomeric material and in particular a rubber material, such as e.g. Hard rubber material on.
Gemäß einer weiteren Ausführungsform der Erfindung ist das Elastikmaterial als Einsatzteil in ein Basismaterial des mit der Positivform versehenen Werkzeugteils eingesetzt. Dies gewährleistet einen einfachen und robusten Aufbau des Presswerkzeugs und eine einfache Austauschbarkeit einer z.B. verschlissenen Positivform. Bevorzugt weisen dabei die ersten und zweiten Werkzeugteile als Basismaterial jeweils ein Metallmaterial wie z.B. ein Stahlmaterial und/oder ein Gusseisenmaterial auf.According to a further embodiment of the invention, the elastic material is used as an insert part in a base material of the mold part provided with the positive mold. This ensures a simple and robust construction of the pressing tool and easy exchangeability of e.g. worn positive shape. In this case, the first and second tool parts as base material preferably each comprise a metal material, such as e.g. a steel material and / or a cast iron material.
Gemäß noch einer Ausführungsform der Erfindung ist das mit dem Elastikmaterial gebildete Einsatzteil leistenförmig ausgebildet und so in das Basismaterial des mit der Positivform versehenen Werkzeugteils eingesetzt, dass ein Längsrandabschnitt des Einsatzteils aus dem Basismaterial des Werkzeugteils um ein vorbestimmtes Maß, insbesondere 2 mm bis 10 mm und bevorzugt 2 mm bis 5 mm, vorsteht. Durch die leistenförmige Ausgestaltung des Einsatzteils lässt sich auf einfache Weise auch für eine langgestreckte Negativform eine erfindungsgemäße Positivform bereitstellen. Ein Pressdruck im Umformbereich von Negativform und Positivform lässt sich dabei vorteilhaft durch geeignete Dimensionierung des Vorstehmaßes des Einsatzteils einstellen.According to yet another embodiment of the invention, the insert part formed with the elastic material is strip-shaped and inserted into the base material of the positive mold part such that a longitudinal edge portion of the insert part is made of the base material of the tool part by a predetermined amount, particularly 2 mm to 10 mm and preferably 2 mm to 5 mm, protruding. Due to the strip-like design of the insert part can be in a simple way for an elongated negative mold a Provide positive form according to the invention. A pressing pressure in the forming region of the negative mold and the positive mold can be advantageously adjusted by suitable dimensioning of the Vorstehmaßes of the insert.
Gemäß einer Ausführungsform der Erfindung weist die Negativform einen Innenradius auf, um auf einer Flächenseite des Blechumformteils eine konvexe Kante zu formen, und weist die Positivform einen von dem Elastikmaterial gebildeten Außenradius auf, um das Blechteil zum Herstellen des Blechumformteils beim Zusammenfahren der beiden Werkzeugteile unter elastischer Verformung des Außenradius zum Formen der Kante in den Innenradius der Negativform zu drücken.According to an embodiment of the invention, the female mold has an inner radius to form a convex edge on one face side of the sheet metal forming part, and the positive mold has an outer radius formed by the elastic material to elasticize the sheet metal part for forming the sheet metal forming part when the two tool parts come together Deformation of the outer radius for forming the edge in the inner radius of the negative mold to press.
Gemäß noch einer Ausführungsform der Erfindung ist das Presswerkzeug zur Realisierung eines Tiefziehvorgangs an dem Blechteil eingerichtet, wobei der erste Werkzeugteil als Stempel ausgebildet ist und in seiner ersten Topografie die Positivform aufweist und der zweite Werkzeugteil als Matrize ausgebildet ist und in seiner zweiten Topografie die Negativform aufweist.According to yet another embodiment of the invention, the pressing tool is adapted for realizing a deep drawing operation on the sheet metal part, wherein the first tool part is formed as a stamp and has in its first topography the positive mold and the second tool part is formed as a die and in its second topography has the negative mold ,
Gemäß einer weiteren Ausführungsform der Erfindung ist das Blechumformteil als Außenhautteil einer Fahrzeugkarosserie vorgesehen, wobei die Negativform und die Positivform ausgebildet sind, um auf einer Außenseite des Blechumformteils eine kantenförmige Designlinie bzw. eine Lichtkante als die konvexe Kante zu formen.According to a further embodiment of the invention, the sheet metal forming part is provided as the outer skin part of a vehicle body, wherein the negative mold and the positive mold are formed to form an edge-shaped design line or a light edge as the convex edge on an outer side of the sheet metal forming part.
Die Erfindung erstreckt sich ausdrücklich auch auf solche Ausführungsformen, welche nicht durch Merkmalskombinationen aus expliziten Rückbezügen der Ansprüche gegeben sind, womit die offenbarten Merkmale der Erfindung - soweit dies technisch sinnvoll ist - beliebig miteinander kombiniert sein können.The invention expressly extends to such embodiments, which are not given by combinations of features of explicit back references of the claims, whereby the disclosed features of the invention - as far as is technically feasible - can be combined with each other.
Im Folgenden wird die Erfindung anhand einer bevorzugten Ausführungsform und unter Bezugnahme auf die beigefügten Figuren beschrieben werden.
- Fig. 1
- zeigt in seitlicher Schnittansicht ein Presswerkzeug gemäß einer Ausführungsform der Erfindung in einem auseinandergefahrenen Zustand und ein in das Presswerkzeug eingelegtes Blechteil.
- Fig. 2
- zeigt in seitlicher Schnittansicht das Presswerkzeug von
Fig. 1 in einem zusammengefahrenen Zustand und ein aus dem Blechteil geformtes Blechumformteil. - Fig. 3
- veranschaulicht in vergrößerter seitlicher Schnittansicht die Problematik der unzureichenden Abbildung einer scharf konturierten Positivform auf einer der Positivform abgewandten Seite eines Blechumformteils.
- Fig. 1
- shows in side sectional view of a pressing tool according to an embodiment of the invention in a disassembled state and an inserted into the pressing tool sheet metal part.
- Fig. 2
- shows in side sectional view of the pressing tool of
Fig. 1 in a contracted state and a formed from the sheet metal part sheet metal part. - Fig. 3
- illustrates in an enlarged side sectional view of the problem of insufficient imaging of a sharp-contoured positive mold on a side facing away from the positive mold of a sheet metal forming part.
Im Folgenden wird unter Bezugnahme auf die
Das Presswerkzeug 1 ist eingerichtet, um aus einem platinenförmigen Blechteil B z.B. aus Aluminium oder Stahl unter Durchführen eines Tiefziehvorgangs ein Blechumformteil B' mit einer gewünschten Form herzustellen. In der vorliegenden Ausführungsform ist das Blechumformteil B' als Außenhautteil einer Fahrzeugkarosserie (nicht vollständig gezeigt) und insbesondere als Außenhautteil einer Fahrzeugseitentür der Fahrzeugkarosserie vorgesehen.The
Das Presswerkzeug 1 weist einen unteren ersten Werkzeugteil 10, welcher einen Stempel des Presswerkzeugs 1 bildet, und einen oberen zweiten Werkzeugteil 30 auf, welcher eine Matrize des Presswerkzeugs 1 bildet.
Der erste Werkzeugteil (Stempel) 10 weist eine im Wesentlichen konvex bzw. positivförmlich ausgebildete erste Topografie 11 zum Formen des Blechumformteils B' auf. Der zweite Werkzeugteil (Matrize) 30 weist eine im Wesentlichen konkav bzw. negativförmlich ausgebildete zweite Topografie 31 zum Formen des Blechumformteils B' auf. Die erste Topografie 11 und die zweite Topografie 31 sind aufeinander abgestimmt, d.h. im Wesentlichen bzw. in etwa komplementär zueinander ausgebildet, um dem Blechumformteil B' durch wie in
Der zweite Werkzeugteil 30 weist in seiner zweiten Topografie 31 eine Negativform 32 mit einem kleinen Innenradius auf, um auf einer Flächenseite (einer späteren Außenseite bzw. Sichtseite) des Blechumformteils B' eine konvexe Kante K' und insbesondere eine kantenförmige Designlinie bzw. Lichtkante wie eine Tornadolinie mit einem kleinen Außenradius zu formen. Der erste Werkzeugteil 10 weist in seiner ersten Topografie 11 eine mit einem Elastikmaterial 20 gebildete Positivform 12 mit einem Außenradius auf, um das Blechteil B zum Herstellen des Blechumformteils B' beim Zusammenfahren der beiden Werkzeugteile 10, 30 unter elastischer Verformung des von dem Elastikmaterial 20 gebildeten Außenradius zum Formen der Kante K' in den Innenradius der Negativform 32 zu drücken.The
Wie aus
Die ersten und zweiten Werkzeugteile 10, 30 sind als Basismaterial jeweils mit einem Metallmaterial wie einem Stahlmaterial und/oder einem Gusseisenmaterial hergestellt. Das Elastikmaterial 20 ist als leistenförmiges Einsatzteil in das Basismaterial des ersten Werkzeugteils 10 eingesetzt (eine Längsrichtung des leistenförmigen Elastikmaterials 20 verläuft senkrecht zur Figurenebene), so dass ein den Außenradius der Positivform 12 definierender Längsrandabschnitt des Einsatzteils aus dem Basismaterial des ersten Werkzeugteils 10 um ein vorbestimmtes Maß (z.B. 2 mm bis 10 mm und bevorzugt 2 mm bis 5 mm) vorsteht. Gemäß der Erfindung ist das Elastikmaterial 20 ein Polymermaterial und insbesondere ein Elastomermaterial. Bevorzugt ist das Elastikmaterial 20 ein Gummimaterial wie insbesondere ein Hartgummimaterial.The first and
Beim Zusammenfahren der beiden Werkzeugteile 10, 30 in den wie in
Wie aus
- 11
- Presswerkzeugpress tool
- 1010
- erster Werkzeugteilfirst tool part
- 1111
- erste Topografiefirst topography
- 1212
- Positivformpositive mold
- 12"12 "
- Positivformpositive mold
- 2020
- ElastikmaterialElastic material
- 3030
- zweiter Werkzeugteilsecond tool part
- 3131
- zweite Topografiesecond topography
- 3232
- Negativformnegative form
- BB
- Blechteilsheet metal part
- B'B '
- Blechumformteilsheet metal component
- B"B "
- VergleichsblechumformteilVergleichsblechumformteil
- K'K '
- Kanteedge
- K"K "
- Kanteedge
Claims (10)
dadurch gekennzeichnet, dass die Positivform (12) ein Elastikmaterial (20) aufweist, um das Blechteil (B) zum Herstellen des Blechumformteils (B') beim Zusammenfahren der beiden Werkzeugteile (10, 30) unter elastischer Verformung des Elastikmaterials (20) in die Negativform (32) zu drücken.A pressing tool (1) for producing a sheet metal forming part (B '), comprising a first top part (11) for forming a sheet metal part (B) from a sheet metal part (B), and a second tool part (30 ), which has a second topography (31) for forming the sheet metal forming part (B '), wherein the first and second topographies (11, 31) are matched to each other to the sheet metal forming part (B') by moving the two tool parts (10, 30 ) in combination with the two topographies (11, 31) to give a desired shape, and wherein one of the first and second topographies (31) has a negative mold (32) and the other of the first and second topographies (11) has a positive shape (FIG. 12) for pressing the sheet metal part (B) for producing the sheet metal forming part (B ') when the two tool parts (10, 30) move together into the negative mold (32),
characterized in that the positive mold (12) comprises an elastic material (20) to the sheet metal part (B) for producing the Blechumformteils (B ') when bringing the two tool parts (10, 30) under elastic deformation of the elastic material (20) in the Press negative mold (32).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014219021.5A DE102014219021A1 (en) | 2014-09-22 | 2014-09-22 | press tool |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2998042A1 true EP2998042A1 (en) | 2016-03-23 |
EP2998042B1 EP2998042B1 (en) | 2019-07-24 |
Family
ID=53969274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15182161.8A Active EP2998042B1 (en) | 2014-09-22 | 2015-08-24 | Pressing tool |
Country Status (3)
Country | Link |
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EP (1) | EP2998042B1 (en) |
CN (1) | CN105437604B (en) |
DE (1) | DE102014219021A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018158351A (en) * | 2017-03-22 | 2018-10-11 | 新日鐵住金株式会社 | Apparatus and method for manufacturing panel having character line |
JP2019093435A (en) * | 2017-11-27 | 2019-06-20 | Jfeスチール株式会社 | Die shape determining method |
EP4043116A4 (en) * | 2019-10-02 | 2022-11-30 | JFE Steel Corporation | Press-forming method and press-forming device for vehicular outer plate panel |
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DE2601423A1 (en) * | 1976-01-15 | 1977-07-21 | Uniplanung Gmbh & Co Kg | Deep drawing stainless steel sink bowls - using two draws and tools preventing tearing of the steel sheet |
GB2208619A (en) * | 1987-08-15 | 1989-04-12 | Austin Rover Group | A sheet metal forming tool and methods of making and using same |
GB2258181A (en) * | 1991-07-20 | 1993-02-03 | Lawson Mardon | Sheet metal forming tool and method |
DE19621942C1 (en) | 1996-05-31 | 1997-04-03 | Daimler Benz Ag | Finely structured vehicle structural component mfg. process |
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DE3715201A1 (en) * | 1987-05-07 | 1988-11-17 | Kloeckner Humboldt Deutz Ag | Shaping tool for the three-dimensional deformation of metal parts |
JP2000312924A (en) * | 1999-04-30 | 2000-11-14 | Kikuchiseisakusho Co Ltd | Work corner edge molding |
DE10324244A1 (en) * | 2003-05-28 | 2004-12-30 | Bayerische Motoren Werke Ag | Process for the production of individualized outer skin sheet metal parts from series production of outer skin sheet metal parts for vehicles as well as outer skin sheet metal parts manufactured according to this process |
DE102004007556A1 (en) * | 2004-02-17 | 2005-12-01 | Bayerische Motoren Werke Ag | Automobile body parts e.g. mudguard , pressing device, has deforming tool arranged in one of recesses, and sheet metal component formed in one of recesses by deforming tool procedure in another recess relative to one of tool part |
DE102005036377B4 (en) * | 2005-07-29 | 2008-05-08 | Fachhochschule Hannover | Device and method for shaping a workpiece |
DE102009035680A1 (en) * | 2009-07-30 | 2011-03-17 | Alcan Technology & Management Ag | Device for forming thermoformed containers |
CA2685334C (en) * | 2009-10-30 | 2013-03-12 | Honda Motor Co., Ltd. | Scrap shape retention |
US8683836B2 (en) * | 2011-07-29 | 2014-04-01 | Ford Global Technologies, Llc | Method and apparatus for forming sharp styling lines on metal panels |
DE102011115219B4 (en) * | 2011-09-24 | 2020-11-05 | Audi Ag | Method and device for producing a sheet metal part avoiding trailing edges |
DE102013007352A1 (en) * | 2013-04-27 | 2014-10-30 | Audi Ag | Method and tool for forming an edge on a sheet metal part |
-
2014
- 2014-09-22 DE DE102014219021.5A patent/DE102014219021A1/en not_active Withdrawn
-
2015
- 2015-08-24 EP EP15182161.8A patent/EP2998042B1/en active Active
- 2015-09-22 CN CN201510606004.9A patent/CN105437604B/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2601423A1 (en) * | 1976-01-15 | 1977-07-21 | Uniplanung Gmbh & Co Kg | Deep drawing stainless steel sink bowls - using two draws and tools preventing tearing of the steel sheet |
GB2208619A (en) * | 1987-08-15 | 1989-04-12 | Austin Rover Group | A sheet metal forming tool and methods of making and using same |
GB2258181A (en) * | 1991-07-20 | 1993-02-03 | Lawson Mardon | Sheet metal forming tool and method |
DE19621942C1 (en) | 1996-05-31 | 1997-04-03 | Daimler Benz Ag | Finely structured vehicle structural component mfg. process |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018158351A (en) * | 2017-03-22 | 2018-10-11 | 新日鐵住金株式会社 | Apparatus and method for manufacturing panel having character line |
JP2019093435A (en) * | 2017-11-27 | 2019-06-20 | Jfeスチール株式会社 | Die shape determining method |
EP4043116A4 (en) * | 2019-10-02 | 2022-11-30 | JFE Steel Corporation | Press-forming method and press-forming device for vehicular outer plate panel |
Also Published As
Publication number | Publication date |
---|---|
DE102014219021A1 (en) | 2016-03-24 |
CN105437604A (en) | 2016-03-30 |
EP2998042B1 (en) | 2019-07-24 |
CN105437604B (en) | 2020-07-17 |
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