EP1468757A2 - Method of forming a workpiece - Google Patents

Method of forming a workpiece Download PDF

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Publication number
EP1468757A2
EP1468757A2 EP04008573A EP04008573A EP1468757A2 EP 1468757 A2 EP1468757 A2 EP 1468757A2 EP 04008573 A EP04008573 A EP 04008573A EP 04008573 A EP04008573 A EP 04008573A EP 1468757 A2 EP1468757 A2 EP 1468757A2
Authority
EP
European Patent Office
Prior art keywords
material strip
contour
workpiece
molding
along
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
Application number
EP04008573A
Other languages
German (de)
French (fr)
Other versions
EP1468757B1 (en
EP1468757A3 (en
Inventor
Hans Rudolf Gubler
Michael Op De Hipt
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.)
Feintool International Holding AG
Original Assignee
Feintool International Holding AG
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.)
Filing date
Publication date
Application filed by Feintool International Holding AG filed Critical Feintool International Holding AG
Publication of EP1468757A2 publication Critical patent/EP1468757A2/en
Publication of EP1468757A3 publication Critical patent/EP1468757A3/en
Application granted granted Critical
Publication of EP1468757B1 publication Critical patent/EP1468757B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21D22/02—Stamping using rigid devices or tools
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/10—Incompletely punching in such a manner that the parts are still coherent with the work

Definitions

  • the invention relates to a method for molding workpieces a strip of material using a molding aid by means of a Tool that is at least partially or entirely along a contour in the Streak of material penetrates.
  • the invention relates to separation and forming processes such as Shear cutting and fineblanking but also on other methods of cutting Forming workpieces, e.g. bending, drawing, extrusion, Stretching, expressing, deep drawing, notching, cutting, Half cutting etc. It refers to all processes in which the Forming and reshaping the workpieces using a molding aid, e.g. B. a Lubricant with additives that improve the shape and shape, on the one or is applied on both sides to the material strip and / or the workpiece.
  • a molding aid e.g. B. a Lubricant with additives that improve the shape and shape, on the one or is applied on both sides to the material strip and / or the workpiece.
  • a molding aid e.g. B. a Lubricant with additives that improve the shape and shape, on the one or is applied on both sides to the material strip and / or the workpiece.
  • a disadvantage of all of these known methods is that the application is extensive takes place, so that a lot of molding aid is wasted. Furthermore, for the actual molding aid (additive mix) usually a carrier medium, e.g. B. oil, required, which contaminates the material strip, so that a subsequent cleaning must be done.
  • a carrier medium e.g. B. oil
  • the object of the present invention is to apply Forming aid on the material strips much more consumption-optimized and make it functionally more efficient.
  • the lubricant When the lubricant is applied to the material strip is from of minor importance.
  • the lubricant itself during the molding process Apply strips of material.
  • this could be done in the tool or a upstream device corresponding, fine nozzles, which are similar to the Inkjet printer or a single or multi-row spray bar with juxtaposed nozzles are provided which the Record the workpiece contour to be formed with a certain knitting thickness.
  • the quantity and duration of these nozzles are then preferably freely programmable, the points can also be kept larger or smaller.
  • the Forming aid even on the material strip before the molding process applied. This can also be done by spraying or spraying or even drops happen. But it can also be done by rolling or printing respectively. As a result, the lubricant can be relatively exactly on the contour of the workpiece to be formed are limited, so that a very effective Quantity and consumption optimized and therefore cost-saving Order procedure is offered.
  • a stamping or Fineblanking tool there is a structured surface in which the molding aid can be stored for the purpose of forming a depot.
  • the cylinder can therefore a pore-shaped structure or an "orange peel" on the surface exhibit.
  • the necessary lubricant or additive cocktail can be found in all possible shapes and conditions are applied to the material strips are, for example. Also as a paste or as a solid lubricant. When printing For example, a corresponding paper or the like could also be used the lubricant is added. There are many possible options here of the present invention are intended to be included.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

Process for shaping workpieces from material strips uses an auxiliary shaping agent and a tool that at least partly or completely penetrates the material strips along a contour. The auxiliary shaping agent is applied to one or both sides of the material strips only along the contour of the workpiece before shaping of the workpiece. Preferred Features: The auxiliary shaping agent is applied to both sides of the material strips along the contour during the shaping process or in a step before shaping.

Description

Die Erfindung betrifft ein Verfahren zum Ausformen von Werkstücken aus einem Materialstreifen unter Einsatz eines Ausformhilfsstoffes mittels einem Werkzeug, welches zumindest teilweise oder ganz entlang einer Kontur in den Materialstreifen eindringt.The invention relates to a method for molding workpieces a strip of material using a molding aid by means of a Tool that is at least partially or entirely along a contour in the Streak of material penetrates.

Stand der TechnikState of the art

Im Stand der Technik sind viele Verfahren zum Ausformen von Werkstücken aus Materialstreifen bekannt. Bspw. werden Werkstücke aus Blech aus entsprechenden Blechstreifen ausgestanzt oder in einem Feinschneidverfahren ausgeschnitten. Ein entsprechendes Feinschneidverfahren ist bspw. in der .... beschrieben.There are many methods for shaping workpieces in the prior art known from strips of material. For example. are made of sheet metal workpieces punched out corresponding sheet metal strips or in a fine blanking process cut out. A corresponding fineblanking process is, for example, in the .... described.

Die Erfindung bezieht sich auf Trenn- und Umformverfahren wie Scherschneiden und Feinschneiden aber auch auf andere Verfahren des Ausund Umformens von Werkstücken, bspw. das Biegen, Ziehen, Fliesspressen, Abstrecken, Ausdrücken, Tiefziehen, Ausklinken, Schneiden, Halbdurchschneiden usw.. Sie bezieht sich auf alle Verfahren, bei denen zum Aus- und Umformen der Werkstücke ein Ausformhilfsstoff, z. B. ein Schmierstoff mit aus- und umformverbessernden Additiven, auf den ein- oder beidseitig auf den Materialstreifen und/oder das Werkstück aufgebracht wird. Dies gilt insbesondere dann, wenn sich Materialeigenschaften abrasiv und/oder adhäsiv auf das Ausformwerkzeug auswirken und deshalb unter Einsatz des Ausformhilfsstoffes bspw. durch Schmierung oder Kühlung des Reib- und Verschleissverhalten herabgesetzt wird.The invention relates to separation and forming processes such as Shear cutting and fineblanking but also on other methods of cutting Forming workpieces, e.g. bending, drawing, extrusion, Stretching, expressing, deep drawing, notching, cutting, Half cutting etc. It refers to all processes in which the Forming and reshaping the workpieces using a molding aid, e.g. B. a Lubricant with additives that improve the shape and shape, on the one or is applied on both sides to the material strip and / or the workpiece. This applies in particular if material properties become abrasive and / or have an adhesive effect on the forming tool and therefore using the Forming aid, for example, by lubricating or cooling the friction and Wear behavior is reduced.

Bei all diesen bekannten Verfahren ist nachteilig, dass der Auftrag grossflächig erfolgt, so dass sehr viel Ausformhilfsstoff verschwendet wird. Ferner ist für den eigentlichen Ausformhilfsstoff (Additivmix) meist ein Trägermedium, z. B. Öl, erforderlich, welches den Materialstreifen kontaminiert, so dass eine nachträgliche Reinigung erfolgen muss.A disadvantage of all of these known methods is that the application is extensive takes place, so that a lot of molding aid is wasted. Furthermore, for the actual molding aid (additive mix) usually a carrier medium, e.g. B. oil, required, which contaminates the material strip, so that a subsequent cleaning must be done.

Aufgabetask

Aufgabe der vorliegenden Erfindung ist es, das Aufbringen von Ausformhilfsstoffes auf den Materialstreifen wesentlich verbrauchsoptimierter und funktional effizienter zu gestalten.The object of the present invention is to apply Forming aid on the material strips much more consumption-optimized and make it functionally more efficient.

Lösung der AufgabeSolution of the task

Zur Lösung dieser Aufgabe führt, dass ein Ausformhilfsstoff nur entlang der Kontur des auszuformenden Werkstückes vor dem Ausformen des Werkstückes ein- oder beidseitig auf den Materialstreifen aufgebracht wird.The solution to this problem is that a molding aid only along the Contour of the workpiece to be molded before molding the Workpiece is applied to the material strip on one or both sides.

Dabei ist es wünschenswert, die Kontur der Ausformlinie sowie die Breite und Dicke des Auftrages des Ausformhilfsstoffes exakt zu definieren, was aber meist bereits durch die Kontur des Werkzeuges bzw. des auszuformenden Werkstückes vorgegeben ist. It is desirable to have the contour of the forming line and the width and To exactly define the thickness of the application of the molding aid, but what mostly already through the contour of the tool or the one to be shaped Workpiece is specified.

Bei einem normalen Stanzvorgang, bei dem das Werkzeug nur von einer Seite in den Materialstreifen eindringt, kann es genügen, den Schmierstoff entlang der Kontur nur auf einer Seite des Materialstreifens aufzubringen. In vielen Fällen wird es jedoch ratsam sein, den Schmierstoff beidseits entlang der Kontur auf den Materialstreifen aufzubringen und zwar möglichst positionsgenau und lagegerecht zu den entsprechenden Werkzeugteilen.In a normal punching process in which the tool is only from one side penetrates the strip of material, it may be sufficient to run the lubricant along apply the contour only on one side of the material strip. In many However, in cases it will be advisable to run the lubricant along both sides of the Apply the contour to the material strip, if possible accurate and in position with the corresponding tool parts.

Wann der Schmierstoff auf den Materialstreifen aufgebracht wird, ist von untergeordneter Bedeutung. In einem Ausführungsbeispiel der Erfindung ist daran gedacht, den Schmierstoff während dem Ausformvorgang selbst auf den Materialstreifen aufzubringen. Bspw. könnte dem Werkzeug eine entsprechende Einrichtung zugeordnet sein, die dem Schmierstoff beim Absenken des Werkzeuges auf den Materialstreifen auf letzteren durch Sprühen oder Spritzen aufbringt. Z. B. könnten hierzu im Werkzeug oder einer vorgeschalteten Vorrichtung entsprechende, feine Düsen, welche ähnlich dem Tintenstrahldrucker oder einem ein- oder mehrreihigen Sprühbalken mit nebeneinander angeordneten Düsen vorgesehen werden, welche die auszuformende Werkstückkontur mit einer bestimmten Strickdicke aufzeichnen. Bevorzugt sind dann Menge und Zeitdauer dieser Düsen frei programmierbar, wobei auch die Punkte grösser oder kleiner gehalten sein können.When the lubricant is applied to the material strip is from of minor importance. In one embodiment of the invention remembered to apply the lubricant itself during the molding process Apply strips of material. For example. could be a tool corresponding device assigned to the lubricant at Lower the tool onto the material strip on the latter Spraying or spraying. For example, this could be done in the tool or a upstream device corresponding, fine nozzles, which are similar to the Inkjet printer or a single or multi-row spray bar with juxtaposed nozzles are provided which the Record the workpiece contour to be formed with a certain knitting thickness. The quantity and duration of these nozzles are then preferably freely programmable, the points can also be kept larger or smaller.

In einem weiteren Ausführungsbeispiel der Erfindung wird jedoch der Ausformhilfsstoff vor dem Ausformvorgang selbst auf den Materialstreifen aufgebracht. Auch dies kann durch Sprühen oder Spritzen oder auch Tropfen geschehen. Es kann aber auch durch ein Aufwalzen oder ein Aufdrucken erfolgen. Hierdurch kann der Schmierstoff relativ exakt auf die Kontur des auszuformenden Werkstückes beschränkt werden, so dass ein sehr effektives mengen- und verbrauchsoptimiertes und dadurch kostensparendes Auftragsverfahren angeboten ist. In a further embodiment of the invention, however, the Forming aid even on the material strip before the molding process applied. This can also be done by spraying or spraying or even drops happen. But it can also be done by rolling or printing respectively. As a result, the lubricant can be relatively exactly on the contour of the workpiece to be formed are limited, so that a very effective Quantity and consumption optimized and therefore cost-saving Order procedure is offered.

Denkbar ist auch, dass an der Zylinderfläche des Stempels eines Stanz- oder Feinschneidwerkzeuges eine strukturierte Oberfläche vorhanden ist, in der sich der Ausformhilfsstoff zwecks Depotbildung einlagern kann. Der Zylinder kann darum an der Oberfläche eine porenförmige Struktur bzw. eine "Orangenhaut" aufweisen.It is also conceivable that a stamping or Fineblanking tool there is a structured surface in which the molding aid can be stored for the purpose of forming a depot. The cylinder can therefore a pore-shaped structure or an "orange peel" on the surface exhibit.

Bei dem erfindungsgemässen Verfahren besteht die Möglichkeit, auf das Trägeröl als Trägermedium für die beim Ausformvorgang notwendigen Additive ganz zu verzichten oder den Anteil zu vermindern, da die Additive auch direkt auf den Materialstreifen aufgebracht werden können. Insbesondere beim bevorzugten Feinschneiden würde ein derartiger Additivcocktail völlig ausreichen. Damit wird ein nachträgliches Reinigen der hergestellten Werkstücke überflüssig oder zumindest vereinfacht.In the method according to the invention, there is the possibility of Carrier oil as a carrier medium for the additives required during the molding process to avoid entirely or to reduce the proportion, since the additives are also direct can be applied to the material strip. Especially when such an additive cocktail would be preferred for fine cutting suffice. This is a subsequent cleaning of the manufactured Workpieces unnecessary or at least simplified.

Im übrigen kann aber der notwendige Schmierstoff bzw. Additivcocktail in allen möglichen Formen und Zuständen auf den Materialstreifen aufgebracht werden, bspw. auch als Paste oder als Festschmierstoff. Beim Aufdrucken könnte bspw. auch ein entsprechendes Papier od. dgl. verwendet werden, dem der Schmierstoff beigemischt ist. Hier sind viele Möglichkeiten denkbar, die von der vorliegenden Erfindung umfasst sein sollen.Otherwise, the necessary lubricant or additive cocktail can be found in all possible shapes and conditions are applied to the material strips are, for example. Also as a paste or as a solid lubricant. When printing For example, a corresponding paper or the like could also be used the lubricant is added. There are many possible options here of the present invention are intended to be included.

Claims (8)

Verfahren zum Ausformen von Werkstücken aus einem Materialstreifen unter Einsatz eines Ausformhilfsstoffes mittels einem Werkzeug, welches zumindest teilweise oder ganz entlang einer Kontur in den Materialstreifen eindringt,
dadurch gekennzeichnet, dass ein Ausformhilfsstoff nur entlang der Kontur des auszuformenden Werkstückes vor dem Ausformen des Werkstückes ein- oder beidseitig auf den Materialstreifen aufgebracht wird.Method for shaping workpieces from a material strip using a shaping aid using a tool which at least partially or completely penetrates the material strip along a contour,
characterized in that a molding aid is applied to the material strip only on one or both sides along the contour of the workpiece to be molded before the workpiece is molded. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Ausformhilfsstoff beidseits, entlang der Kontur auf den Materialstreifen aufgebracht wird.A method according to claim 1, characterized in that the auxiliary molding agent is applied to the material strip on both sides, along the contour. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Ausformhilfsstoff während dem Ausformvorgang auf den Materialstreifen aufgebracht wird.A method according to claim 1 or 2, characterized in that the auxiliary molding agent is applied to the material strip during the molding process. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Ausformhilfsstoff vom Werkzeug aus direkt auf den Materialstreifen entlang der Kontur angebracht wird.Method according to one of claims 1 to 3, characterized in that the auxiliary molding agent is applied from the tool directly to the material strip along the contour. Verfahren nach wenigstens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass ein Teil des Werkzeuges, beispielsweise ein Stempel, eine Oberflächenstruktur aufweist, in der zumindest ein Teil des Ausformhilfsstoffes aufgenommen wird. Method according to at least one of claims 1 to 4, characterized in that part of the tool, for example a stamp, has a surface structure in which at least part of the molding aid is received. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Ausformhilfsstoff in einem Arbeitsschnitt vor dem Ausformen auf den Materialstreifen aufgebracht wird.A method according to claim 1 or 2, characterized in that the molding aid is applied to the material strip in a working cut before molding. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Ausformhilfsstoff entlang der Kontur des auszuformenden Werkstückes auf den Materialstreifen aufgewalzt, aufgedruckt oder mittels Sprühdüsen freiprogrammierbar in Strichdicke und Auftragsdicke oder als Punktereihe mit variabler Punktgrösse und damit variablem Ausformhilfsstoffinhalt aufgebracht wird.Method according to one of claims 1 to 6, characterized in that the auxiliary molding agent is rolled onto the material strip along the contour of the workpiece to be molded, printed on or applied in a programmable manner by means of spray nozzles in line thickness and application thickness or as a series of dots with variable dot size and thus variable auxiliary material content. Verfahren nach wenigstens einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass aus dem Materialstreifen ein Werkstück im Feinschneidverfahren ausgeschnitten wird.Method according to at least one of claims 1 to 7, characterized in that a workpiece is cut out of the material strip using the fineblanking method.
EP04008573A 2003-04-16 2004-04-08 Method of forming a workpiece Expired - Lifetime EP1468757B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10317777A DE10317777A1 (en) 2003-04-16 2003-04-16 Process for molding workpieces
DE10317777 2003-04-16

Publications (3)

Publication Number Publication Date
EP1468757A2 true EP1468757A2 (en) 2004-10-20
EP1468757A3 EP1468757A3 (en) 2005-10-26
EP1468757B1 EP1468757B1 (en) 2009-01-07

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EP04008573A Expired - Lifetime EP1468757B1 (en) 2003-04-16 2004-04-08 Method of forming a workpiece

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EP (1) EP1468757B1 (en)
AT (1) ATE419935T1 (en)
DE (2) DE10317777A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013022223A1 (en) * 2013-12-20 2015-06-25 Raziol Zibulla & Sohn Gmbh Apparatus and method for applying liquid to pasty Befettungsmittel on a workpiece surface
DE102017009239A1 (en) * 2017-10-04 2019-04-04 PIKOLUBE UG (haftungsbeschränkt) Inkjet printers and methods for the selective printing of polymer lubricants and other chem. Inks for supporting the micro-scratch-free forming of stainless steel parts, aluminum and carbon steel parts for white goods, automotive sector and others. metal. Machine elements. The aim is to substitute previous methods with protective film and applied polymer protective layer, which require downstream cleaning processes of the complete parts

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1224543A (en) * 1967-06-05 1971-03-10 Feintool A G Improvements in or relating to cutting punch tools
US5271144A (en) * 1992-06-29 1993-12-21 Es Products Coil coating of sheet metal to provide localized corrosion protection

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1224543A (en) * 1967-06-05 1971-03-10 Feintool A G Improvements in or relating to cutting punch tools
US5271144A (en) * 1992-06-29 1993-12-21 Es Products Coil coating of sheet metal to provide localized corrosion protection

Also Published As

Publication number Publication date
DE502004008807D1 (en) 2009-02-26
DE10317777A1 (en) 2004-11-04
EP1468757B1 (en) 2009-01-07
ATE419935T1 (en) 2009-01-15
EP1468757A3 (en) 2005-10-26

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