EP1468757B1 - Method of forming a workpiece - Google Patents
Method of forming a workpiece Download PDFInfo
- Publication number
- EP1468757B1 EP1468757B1 EP04008573A EP04008573A EP1468757B1 EP 1468757 B1 EP1468757 B1 EP 1468757B1 EP 04008573 A EP04008573 A EP 04008573A EP 04008573 A EP04008573 A EP 04008573A EP 1468757 B1 EP1468757 B1 EP 1468757B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- forming
- contour
- tool
- forming additive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 33
- 239000000654 additive Substances 0.000 claims description 13
- 239000000314 lubricant Substances 0.000 claims description 13
- 230000000996 additive effect Effects 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 abstract 7
- 238000000465 moulding Methods 0.000 description 6
- 238000005507 spraying Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002199 base oil Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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 forming workpieces from a strip of material using a Ausformtosstoffes by means of a tool which at least partially or completely penetrates along a contour in the strip of material.
- workpieces are punched out of sheet metal from corresponding metal strips or cut in a fine blanking process.
- a corresponding fine blanking method is, for example, in the GB-A 1 224 543 described.
- the fine blanking tool used here ensures during the punching movement that a lubricating film is present between the die of the fine blanking tool and the sheet material to be punched, for which normal lubricant is used.
- the invention relates to separation and forming processes such as shearing and fine blanking but also to other methods of forming and forming workpieces, for example.
- the bending, drawing, extrusion, stretching, expressing, deep drawing, notching, cutting, half-cutting, etc. .. refers to all methods in which for Aus- and forming the workpieces a Ausformangesstoff, z.
- Object of the present invention is to make the application of Ausformysschers on the material strip substantially consumption-optimized and functionally efficient.
- the tool could be associated with a corresponding device which applies the lubricant when lowering the tool on the strip of material on the latter by spraying or spraying.
- a corresponding device which applies the lubricant when lowering the tool on the strip of material on the latter by spraying or spraying.
- fine nozzles which are similar to the ink jet printer or a single or multi-row spray bar with juxtaposed nozzles are provided which record the Stanfordformende workpiece contour with a certain line thickness.
- the amount and duration of these nozzles are then freely programmable, and the points can be kept larger or smaller.
- the Ausformysstoff is applied before the molding process itself on the strip of material. Again, this can be done by spraying or spraying or even drops. But it can also be done by rolling or printing. In this way, the lubricant can be relatively accurately limited to the contour of the Schwarzformenden workpiece, so that a very effective volume and consumption-optimized and thus cost-saving application process is offered.
- a structured surface is present on the cylindrical surface of the punch of a punching or fine blanking tool, in which the Ausformangesstoff can store for the purpose of depot formation.
- the cylinder can therefore have on the surface of a pore-shaped structure or an "orange peel".
- the necessary lubricant or additive cocktail can be applied in all possible forms and states to the material strip, for example also as a paste or as a solid lubricant.
- the lubricant is added.
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
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 forming workpieces from a strip of material using a Ausformhilfsstoffes by means of a tool which at least partially or completely penetrates along a contour in the strip of material.
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
Die Erfindung bezieht sich auf Trenn- und Umformverfahren wie Scherschneiden und Feinschneiden aber auch auf andere Verfahren des Aus- und 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 shearing and fine blanking but also to other methods of forming and forming workpieces, for example. The bending, drawing, extrusion, stretching, expressing, deep drawing, notching, cutting, half-cutting, etc. .. refers to all methods in which for Aus- and forming the workpieces a Ausformhilfsstoff, z. As a lubricant with off and form-improving additives, is applied to the one or both sides of the strip of material and / or the workpiece. This applies in particular when material properties have an abrasive and / or adhesive effect on the molding tool and is therefore reduced by using the molding assistant, for example by lubricating or cooling the friction and wear behavior.
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.In all these known methods is disadvantageous that the job is carried out over a large area, so that a lot of Ausformhilfsstoff is wasted. Furthermore, for the actual Ausformhilfsstoff (additive mix) usually a carrier medium, for. As oil, which contaminates the strip of material, so that a subsequent cleaning must be done.
In diesem Zusammenhang ist zwar aus der
Aufgabe der vorliegenden Erfindung ist es, das Aufbringen von Ausformhilfsstoffes auf den Materialstreifen wesentlich verbrauchsoptimierter und funktional effizienter zu gestalten.Object of the present invention is to make the application of Ausformhilfsstoffes on the material strip substantially consumption-optimized and functionally efficient.
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.To achieve this object, that a Ausformhilfsstoff only one along the contour of the auszuformenden workpiece prior to molding of the workpiece or is applied to both sides of the strip of material.
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 define the contour of the forming line as well as the width and thickness of the order of Ausformhilfsstoffes exactly, but this is usually already determined by the contour of the tool or the auszuformenden workpiece.
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 operation, in which the tool only penetrates from one side into the strip of material, it may be sufficient to apply the lubricant along the contour only on one side of the strip of material. In many cases, however, it will be advisable to apply the lubricant on both sides along the contour on the strip of material and as accurate as possible and correct position to 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 Strichdicke 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 strip of material is of minor importance. In one embodiment of the invention, it is envisaged to apply the lubricant itself to the strip of material during the molding process. For example. the tool could be associated with a corresponding device which applies the lubricant when lowering the tool on the strip of material on the latter by spraying or spraying. For example, for this purpose, in the tool or an upstream device corresponding, fine nozzles, which are similar to the ink jet printer or a single or multi-row spray bar with juxtaposed nozzles are provided which record the auszuformende workpiece contour with a certain line thickness. Preferably, the amount and duration of these nozzles are then freely programmable, and the points can 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 Ausformhilfsstoff is applied before the molding process itself on the strip of material. Again, this can be done by spraying or spraying or even drops. But it can also be done by rolling or printing. In this way, the lubricant can be relatively accurately limited to the contour of the auszuformenden workpiece, so that a very effective volume and consumption-optimized and thus cost-saving application process 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 structured surface is present on the cylindrical surface of the punch of a punching or fine blanking tool, in which the Ausformhilfsstoff can store for the purpose of depot formation. The cylinder can therefore have on the surface of a pore-shaped structure or an "orange peel".
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, it is possible to completely dispense with the carrier oil as a carrier medium for the additives necessary for the molding process or to reduce the proportion, since the additives can also be applied directly to the material strip. Especially in the case of preferred fineblanking, such an additive cocktail would be completely sufficient. For a subsequent cleaning of the workpieces produced is 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.For the rest, however, the necessary lubricant or additive cocktail can be applied in all possible forms and states to the material strip, for example also as a paste or as a solid lubricant. When printing, for example, a corresponding paper od. Like. Be used, the lubricant is added. Here are many possibilities conceivable, which should be encompassed by the present invention.
Claims (7)
- A method for forming of working pieces from a strip of material by a tool which at least partly or completely penetrates into the strip of material along the contour of the working pieces, whereas a lubricant is applied,
characterized in
that the lubricant in the form of a forming additive is applied only along the contour of the working pieces to be formed before or during the forming of the working pieces on one side or on both sides of the strip of material. - The methode according to claim 1, characterized in that the forming additive is applied on both sides of the strip of material along the contour.
- The method according to one of the claims 1 or 2, characterized in that the forming additive is applied from the tool directly onto the strip of material along the contour.
- The method according to at least one of the claims 1 to 3, characterized in that a part of the tool, for example a die, has a surface structure in which at least a part of the forming additive is included.
- The method according to one of the claims 1 or 4, characterized in that the forming additive is applied onto the strip of material in a working step before the forming.
- The method according to at least one of the claims 1 to 5, characterized in that the forming additive is rolled on, imprinted or applied by spray nozzles onto the strip of material along the contur of the working piece to be formed freely programmable in coat thickness and application thickness or as a row of points with a variable row of points having a variable point size, and therefore with variable content of forming additive.
- The method according to at least one of the claims 1 to 6, characterized in that this method is applied to working pieces to be cut out of a strip of material according to the fine blanking method.
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 EP1468757A2 (en) | 2004-10-20 |
| EP1468757A3 EP1468757A3 (en) | 2005-10-26 |
| EP1468757B1 true EP1468757B1 (en) | 2009-01-07 |
Family
ID=32892400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04008573A Expired - Lifetime EP1468757B1 (en) | 2003-04-16 | 2004-04-08 | Method of forming a workpiece |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1468757B1 (en) |
| AT (1) | ATE419935T1 (en) |
| DE (2) | DE10317777A1 (en) |
Families Citing this family (2)
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH475805A (en) * | 1967-06-05 | 1969-07-31 | Feintool Ag | Fine cut punching tool |
| US5271144A (en) * | 1992-06-29 | 1993-12-21 | Es Products | Coil coating of sheet metal to provide localized corrosion protection |
-
2003
- 2003-04-16 DE DE10317777A patent/DE10317777A1/en not_active Withdrawn
-
2004
- 2004-04-08 DE DE502004008807T patent/DE502004008807D1/en not_active Expired - Fee Related
- 2004-04-08 AT AT04008573T patent/ATE419935T1/en not_active IP Right Cessation
- 2004-04-08 EP EP04008573A patent/EP1468757B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE502004008807D1 (en) | 2009-02-26 |
| DE10317777A1 (en) | 2004-11-04 |
| EP1468757A2 (en) | 2004-10-20 |
| ATE419935T1 (en) | 2009-01-15 |
| EP1468757A3 (en) | 2005-10-26 |
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