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EP3411165B1 - Method for machining and/or producing a component and such a component - Google Patents

Method for machining and/or producing a component and such a component Download PDF

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Publication number
EP3411165B1
EP3411165B1 EP17702084.9A EP17702084A EP3411165B1 EP 3411165 B1 EP3411165 B1 EP 3411165B1 EP 17702084 A EP17702084 A EP 17702084A EP 3411165 B1 EP3411165 B1 EP 3411165B1
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EP
European Patent Office
Prior art keywords
surface coating
component
semi
notching
finished product
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.)
Active
Application number
EP17702084.9A
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German (de)
French (fr)
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EP3411165A1 (en
Inventor
Bernhard Glück
Robert Kirschner
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.)
Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Publication of EP3411165A1 publication Critical patent/EP3411165A1/en
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    • 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
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
    • 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
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/001—Shaping combined with punching, e.g. stamping and perforating

Definitions

  • the present invention relates to a method for processing and/or producing a component, which is used in particular when processing and/or producing a metal sheet metal component or sandwich component or a corresponding semi-finished product.
  • JP 2009-234016 A describes a method of making a nozzle plate for ink jet printing.
  • a substrate is provided, on the surface of which there is an oxide film.
  • the substrate is punched at a suitable point using a punch and the remaining substrate layer is then severed from the still unprocessed, opposite side.
  • the object is achieved by a method for processing and/or producing a component in that first a component or a semi-finished product is provided which has a base body with a first surface and a first surface coating provided on the first surface, the component or semi-finished product the first surface coated with the first surface coating is then notched, and the component or semi-finished product is then severed, punched or trimmed along the notch.
  • the notching is carried out in such a way that at least a part of the first surface coating that is notched in the process is retained along the notched surfaces created during the notching process.
  • the method according to the invention can be applied to all conceivable components/semi-finished products.
  • the method is particularly suitable for processing or producing metal sheet metal components, since the formation of burrs and flakes can also be reduced or prevented by the method according to the invention.
  • the component to be used can also have a single-layer or multi-layer structure and be present, for example, in the form of a laminate.
  • the method according to the invention can also be used in particular for sandwich components that comprise layers of plastic and, for example, steel.
  • a surface coating within the meaning of the invention is generally understood to mean a functional coating that is applied to the surface of the base body of the component/semi-finished product for aesthetic reasons, for functionalization of the component/semi-finished product, for reasons of protection or stability and in particular for reasons of chemical or mechanical stability.
  • Semi-finished product is applied.
  • the first surface coating can be constructed in one or more layers, bonded to the surface of the base body or resting loosely on it. Furthermore, the first surface coating does not have to completely cover the first surface of the base body, but can be arranged on selected sections or in predefined areas.
  • the notching is carried out at such a point on the first surface of the component or semi-finished product where the first surface coating is present. Notching creates so-called notch surfaces, i.e. the surfaces that are formed by notching in the direction of the notch. According to the invention, these notched surfaces comprise at least part of the notched first surface coating, which increases the functionality of the resulting component and its stability with respect to environmental influences and chemical or mechanical influences. This is the case in particular when the notched surfaces are covered by the first surface coating to at least 40%, in particular at least 70%, as a result of the notching.
  • the notch surfaces are preferably covered up to 100% with the first surface coating.
  • the functionality introduced by the first surface coating is retained in the resulting component even after it has been severed, punched or trimmed, namely at least on the indented surfaces, the notched surfaces. Rather, by introducing the first surface coating into the resulting notch, depending on the surface coating used, additional functionalities can be introduced into the notch and thus also into the component obtained after punching, cutting through or trimming in one work step.
  • the method can be implemented easily without great technical effort and enables the cost-effective processing or production of highly functional and highly stable components or semi-finished products with high frequency.
  • post-processing for subsequent functionalization or sealing of the cut areas can be dispensed with, which means that additional material costs and workload can be saved.
  • the component or the semi-finished product is severed, punched or trimmed using a mechanical cutting method.
  • the component or the semi-finished product has a second surface coating on a second surface opposite the first surface.
  • a further advantageous development of the method according to the invention is characterized in that the component or semi-finished product is notched both on the first surface coated with the first surface coating and on the second surface coated with the second surface coating.
  • a type of layered structure is formed by the first surface coating, the base body of the component/semi-finished product and the second surface coating, in which the base body of the component/semi-finished product is arranged between the two surface coatings.
  • the first and the second surface coating can be of the same design or differ in type, shape, design and/or functionality.
  • the first or second surface coating can be applied along a particularly large area of the notched surfaces and thus also in the immediate vicinity of the resulting cut area or hole area, i.e. on hole edges, hole edges, Reveals, cut edges, cut surfaces and the like are provided.
  • the functionalization of the resulting component is thus maximized.
  • the scoring on the first surface coated with the first surface coating can be performed with a desired scoring depth. If the notch is only from the side of the first surface coating, the notch depth can be up to 90% of the thickness of the base body, but in particular at least up to 80% of the thickness of the base body.
  • the thickness of the base body is determined in the intended notching direction, ie the direction in which the notching process is to be carried out or was carried out.
  • the notching on the first surface coated with the first surface coating and/or on the second surface coated with the second surface coating is to a depth of less than half the thickness of the base body of the component/semi-finished product, in particular to a depth of 10 to 40% of the thickness of the base body.
  • the thickness of the base body is determined in the intended notching direction, ie the direction in which the notching process is to be carried out.
  • a notch on both sides with one each On the other hand, a depth of 50% of the thickness of the base body has turned out to be rather disadvantageous, since the notched noses of the notches formed opposite one another abut.
  • the notching is advantageously carried out symmetrically in the direction of the notch, for example cylindrically, conically or in a V-shape. In other words, this means that the shape of the notch is formed symmetrically.
  • the notching is advantageously carried out by means of embossing, roller embossing, rolling or knurling.
  • the methods mentioned here are particularly well suited to designing the notching in such a way that the first and/or second surface coating is formed or found again on the corresponding notching surfaces.
  • the notching is performed symmetrically on the first surface coated with the first surface coating and on the second surface coated with the second surface coating.
  • symmetrical means with the same notch shape and also with the same notch depth.
  • the surface coating is not restricted in detail.
  • the surface coating(s) is/are advantageously selected from at least one zinc layer, at least one zinc-aluminum layer, at least one adhesive layer and/or at least one polymeric layer.
  • KTL cathodic dip paint
  • paints e.g. for using the process on components/semi-finished products (white goods) that have already been coated.
  • layers of zinc are advantageous for improving the corrosion resistance of the component or semi-finished product. Due to the method according to the invention, this corrosion protection then extends to the notched surfaces and, due to the long-distance effect of the zinc, also to the cut surfaces, cut edges, hole edges, soffits and the like - which are significantly smaller compared to the described prior art remain on the resulting functional component after the component or semi-finished product has been severed, punched or trimmed. It has been found here that at least 40%, in particular at least 70%, coverage of the notch surfaces with zinc, due to the long-distance effect of the zinc, is sufficient to ensure high corrosion protection in the resulting component/semi-finished product.
  • Adhesive layers are suitable for adding a further functionality to the notched surfaces and thus also to the cut areas, ie the cut surfaces, cut edges, hole edges, hole edges, reveals and the like. This is particularly advantageous if another component/semi-finished product is to be connected by means of adhesive forces to the areas created during the separating, cutting or perforating process.
  • the method according to the invention saves a complex, additional step of subsequently introducing an adhesive into the notch and cut area.
  • the corresponding surface coating can also comprise at least one polymeric layer. Paint layers, ie protective paints, colored paints, anti-corrosion paints and the like, are mentioned here by way of example.
  • the respective functionality is also extended to the cut areas by the notching in the method according to the invention on the notched surfaces.
  • the resulting component is characterized by high stability and functionality.
  • a thickness of the base body of the component/semi-finished product is advantageously at most 3 mm and in particular 0.5 to 2.5 mm. This can ensure good spreading of the surface coating(s) onto the corresponding indentation(s).
  • a further advantageous layer thickness of the first surface coating and/or the second surface coating on the respective surface of the component/semi-finished product is a maximum of 20 ⁇ m and in particular a maximum of 15 ⁇ m.
  • the layer thickness of the respective surface coating is determined perpendicular to the corresponding surface of the component/semi-finished product and can be determined using micrographs. If the layer thickness of the surface coating(s) is in the specified range, there is sufficient surface coating to cover the indentation and, moreover, there is at most enough surface coating that the cutting process, Punching process or trimming process can be carried out particularly precisely.
  • the notching is carried out in such a way that a layer thickness of the first surface coating along the notched surfaces is at least 20%, in particular at least 30%, of the layer thickness of the first surface coating on the first surface of the component/semi-finished product.
  • the notching is carried out in such a way that a layer thickness of the second surface coating along the notched surfaces is at least 20%, in particular at least 30%, of the layer thickness of the second surface coating on the second surface of the component/semi-finished product.
  • the layer thickness of the respective surface coating along the notched surfaces is determined perpendicular to the corresponding notched surface. In this way it can be ensured particularly well that the functionality introduced by the respective surface coating is also retained to a particularly high degree on the notched surfaces and thus on the cut surfaces, cut edges, hole edges, soffits and the like.
  • the layer thickness of the surface coating from the surface of the component/semi-finished product decreases uniformly or in stages along the direction of the notch, so that maximum functionalization in the resulting component/semi-finished product can be achieved with minimal expenditure on surface coating material.
  • a further advantageous development of the method according to the invention provides that the notching of the component or semi-finished product on the first surface coated with the first surface coating and/or on the second surface coated with the second surface coating takes place in the same process step as the cutting through, perforating or trimming of the Component or semi-finished product is performed along the notch.
  • the notching can already take place in the shaping step by appropriate design of the molding tool.
  • the notch can be pressed in with the drawing tool, for example.
  • a component is also described which is produced according to the method disclosed above.
  • the component is characterized by high functionality and stability.
  • the component is advantageously characterized in that at least part of the first and/or second surface coating is preserved along notched surfaces.
  • the device is designed in such a way that the notching and the severing, piercing or trimming of the component or semi-finished product can be carried out in one work step.
  • a device is provided in the form of a punching tool which is designed in such a way that the notching can be carried out using a hold-down device and a cutting die and the actual punching can be carried out using a punch in a single pressing stroke.
  • figure 1 is a schematic representation of the process flow of a method for processing and / or manufacturing a component according to a first embodiment of the present invention. It should be noted here that the process is basically suitable for the processing or production of semi-finished products as well as components. In the exemplary embodiments illustrated in the figures, however, reference is only made to the production or processing of a component. However, analogous statements also apply to the processing or production of semi-finished products.
  • a component 1 is provided.
  • the component 1 is not restricted in detail and can be a sheet metal component or a sandwich component, for example.
  • the component 1 comprises a base body 2.
  • the base body 2 can be constructed in one or more layers. As in figure 1 shown, the base body 2 is formed by way of example from a layer which is in particular a sheet metal with a thickness D G of up to 3 mm.
  • the base body 2 has a first surface 3 and a second surface 4 opposite the first surface 3 .
  • a first surface coating 5 is provided on the first surface 3 and a second surface coating 6 is provided on the second surface 4 .
  • the surface coatings 5, 6 can be the same or different, that is, they can be the same or different in type and design, they can lie loosely on the respective surface 3, 4, or they can be connected to the corresponding surface 3, 4 with a material bond.
  • Exemplary surface coatings include at least one zinc layer, at least one zinc-aluminum layer, at least one adhesive layer, and/or at least one polymeric layer.
  • the first surface coating 5 and the second surface coating 6 completely cover the corresponding first surface 3 and second surface 4 .
  • the surface coating 5, 6 it is also possible for the surface coating 5, 6 to be provided only in certain partial sections of the respective surface 3, 4, ie where the notching is to be carried out.
  • the first surface coating 5 has a layer thickness on the first surface 3 of the component 1 which is marked with D Ob1 . It is determined perpendicular to the first surface 3 of the component 1 .
  • the second surface coating 6 has a layer thickness on the second surface 4 of the component 1, which is marked with D Ob2 . It is determined perpendicular to the second surface 4 of the component 1 .
  • the layer thickness can be determined using micrographs.
  • the component 1 is notched on the first surface 3 coated with the first surface coating 5, thereby obtaining a notch 8.
  • the notching can be carried out using a suitable tool, in particular using an embossing tool. Embossing tools are very well suited to retaining at least part of the first surface coating 5 that is being scored along the notched surfaces 7 that are being formed during the scoring. In other words, not only does a region of the base body 1 sink during the notching process, but also the first surface coating 5 located thereon. The first surface coating 5 can in particular also be pressed into the notch 8 .
  • the layer thickness of the first surface coating D Ob1 which is determined perpendicularly to the first surface 3 of the component 1 , is compressed as a result of the notching.
  • the result is that a layer thickness of the first surface coating along the notched areas B is smaller than the layer thickness of the surface coating D Ob1 on the first surface 3 of the component 1.
  • the layer thickness of the first surface coating along the notched areas B is determined perpendicular to the corresponding notched areas.
  • the layer thickness of the first surface coating D Ob1 on the first surface 3 of the component 1 is advantageously at most 20 ⁇ m and in particular at most 15 ⁇ m.
  • the notching is carried out in such a way that the layer thickness of the first surface coating along the notched areas B is at least 20% and in particular at least 30% of the layer thickness of the first surface coating on the first surface of the component D Ob1 .
  • This is shown in this example. It is also possible for the layer thickness of the first surface coating to describe a gradient along the notch surfaces B and to decrease in the notch direction K, for example.
  • the notching in notching direction K takes place symmetrically, which is illustrated in the sectional view by the V-shape of notch 8 .
  • the notching depth is as great as possible.
  • the depth of the notch which is determined in the direction of the notch, can be made to a depth of less than half the thickness of the base body D G , but in particular to a depth of 90% of the thickness of the base body 1 D G .
  • the component is severed, punched or trimmed, for example by means of a mechanical cutting tool 10 along the notch 8 and in figure 1 for example in notch direction K.
  • a mechanical cutting tool 10 can be used as the cutting tool 10, for example a rolling cut tool, shearing cut tool, notched cutting tool, punching tool or a fly cutter, which enable the component 1 to be severed, punched or trimmed with the desired shape.
  • a punching tool is used to create a cylindrical recess in component 1.
  • the resulting component 1 has the first surface coating 5 over a large partial area of the punched hole 11 .
  • the surfaces of the base body 9 are exposed only in a small section of the punched hole.
  • first surface coating 5 The function introduced by the first surface coating 5 is thus retained in the resulting component 1 and can even be extended to the cut areas in component 1. Subsequent sealing or costly post-treatment to increase the protective effect of the component 1 or for aesthetic or stability reasons is not necessary.
  • additional functionality can also be introduced into the notch 8 and thus also into the component obtained after the separating process. This would be the case, for example, if the first surface coating 5 were an adhesive coating, for example.
  • the adhesive properties would also be present on the notched surfaces 7 after the separation process.
  • Alternative functional coatings are colored lacquers, protective lacquers and the like. The method can be carried out without great technical effort and enables the cost-effective production of highly functional and highly stable components with high clock rates.
  • FIG. 12 is a schematic illustration showing the process flow of a method for processing and/or manufacturing a component according to a second embodiment of the present invention.
  • the notching on the first surface 3 coated with the first surface coating 5 and on the second surface 4 coated with the second surface coating 6 is made to a depth of less than half the thickness of the base body D G , in particular to a depth of 10 up to 40% of the thickness of the base body D G executed. This prevents the resulting notched lugs from colliding.
  • the scoring on the first surface 3 coated with the first surface coating 5 and on the second surface 4 coated with the second surface coating 6 is performed symmetrically.
  • the notches 8 and 12 have the same shape and notch depth.
  • the first surface coating 5 and the second surface coating 6 are introduced into the notched surfaces 7 of the respective notches 8, 12 and thus functionalize the notched surfaces 7 on the sides of the two surfaces 3, 4 of the component 1. This makes it easier to have the largest possible notched surface area functionalize.
  • the notching causes the layer thickness of the first surface coating D Ob1 , which is perpendicular to the first surface 3 of the component 1 is determined, as well as the layer thickness of the second surface coating D Ob2 , which is determined perpendicular to the second surface 4 of the component 1.
  • a layer thickness of the first surface coating along the notched areas B is smaller than the layer thickness of the first surface coating D Ob1 on the first surface 3 of the component 1.
  • a layer thickness of the second surface coating along the notched areas C is smaller than the layer thickness of the second surface coating D Ob2 on the second surface 4 of the component 1.
  • the layer thicknesses of the first and second surface coating along the notched surfaces B, C are determined perpendicular to the notched surfaces 7.
  • a component 1 with high functionality and chemical and mechanical stability is obtained, which makes post-sealing or post-processing of the cut areas after the cutting process superfluous.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Description

Die vorliegende Erfindung betrifft ein Verfahren zum Bearbeiten und/oder Herstellen eines Bauteils, das insbesondere beim Bearbeiten und/oder Herstellen eines metallischen Blechbauteils oder Sandwichbauteils oder eines entsprechenden Halbzeugs Anwendung findet.The present invention relates to a method for processing and/or producing a component, which is used in particular when processing and/or producing a metal sheet metal component or sandwich component or a corresponding semi-finished product.

Aus dem Stand der Technik sind unterschiedliche mechanische Trennverfahren bekannt, mit deren Hilfe ein Blechbauteil beschnitten oder gelocht werden kann. Beispielhaft beschreibt DE 44 01 830 C1 ein Verfahren, bei dem ein Blechteil in einer Halterung fixiert und sodann beim Arbeitshub eines zur Anwendung kommenden Schnittwerkzeugs im Schneidespalt zwischen einem Obermesser und einem Untermesser zunächst plastisch verformt und anschließend, nach Rissbildung, vollständig durchtrennt wird. Nachteilig an diesen herkömmlichen Verfahren ist, dass bei Verwendung von (funktional) oberflächenbeschichteten Bauteilen, beispielsweise von verzinkten Bauteilen, auf den Schnittkanten, Lochrändern, Lochwänden, Laibungen und dergleichen, durch den Schneidevorgang eine unbeschichtete, im Beispielsfall eine zinkfreie Oberfläche, entsteht. Dies führt im Beispielfall zu einer ungewollten Beschädigung des Bauteils im Schnittbereich, was nur durch aufwendige Nachbearbeitung bzw. Nachbeschichtung mindestens teilweise behoben werden kann. Die unbeschichteten Schnittbereiche und dergleichen, bergen zudem die Gefahr der Unterwanderung der noch auf der Oberfläche des Bauteils vorhandenen Oberflächenbeschichtung. Dies kann zusätzliche Bauteilschäden verursachen.Various mechanical cutting processes are known from the prior art, with the help of which a sheet metal component can be cut or punched. Described as an example DE 44 01 830 C1 a method in which a sheet metal part is fixed in a holder and then first plastically deformed during the working stroke of a cutting tool used in the cutting gap between an upper blade and a lower blade and then, after cracking, is completely severed. The disadvantage of these conventional methods is that when using (functionally) surface-coated components, for example galvanized components, on the cut edges, hole edges, hole walls, soffits and the like, the cutting process produces an uncoated surface, in the example a zinc-free surface. In the example, this leads to unwanted damage to the component in the cutting area, which can only be partially remedied by costly post-processing or post-coating. The uncoated cut areas and the like also harbor the risk of undermining the surface coating still present on the surface of the component. This can cause additional component damage.

JP 2009-234016 A beschreibt ein Verfahren zur Herstellung einer Düsenplatte für das Tintenstrahldrucken. Hierzu wird ein Substrat bereitgestellt, auf dessen Oberfläche ein Oxidfilm vorhanden ist. Das Substrat wird an geeigneter Stelle mittels einer Stanze gestanzt und die verbleibende Substratschicht anschließend von der noch unbearbeiteten, gegenüberliegenden Seite her durchtrennt. JP 2009-234016 A describes a method of making a nozzle plate for ink jet printing. For this purpose, a substrate is provided, on the surface of which there is an oxide film. The substrate is punched at a suitable point using a punch and the remaining substrate layer is then severed from the still unprocessed, opposite side.

Die DE 60038696T bildet die Basis für die Oberbegriffe der unabhängigen Ansprüche.The DE 60038696T forms the basis for the preambles of the independent claims.

Ausgehend von diesem Stand der Technik ist es Aufgabe der vorliegenden Erfindung, ein technisch und aufwandtechnisch einfaches Verfahren zum Bearbeiten und/oder Herstellen eines Bauteils anzugeben, das Sekundärschäden am resultierenden Bauteil vorbeugt bzw. reduziert, und damit die hohe Funktionalität und Stabilität des Bauteils bewahrt.Proceeding from this state of the art, it is the object of the present invention to provide a technically simple method for processing and/or producing a component that prevents or reduces secondary damage to the resulting component and thus preserves the high functionality and stability of the component.

Erfindungsgemäß wird die Aufgabe durch ein Verfahren zum Bearbeiten und/oder Herstellen eines Bauteils dadurch gelöst, dass zunächst ein Bauteil oder ein Halbzeug bereitgestellt wird, das einen Grundkörper mit einer ersten Oberfläche und einer an der ersten Oberfläche vorgesehenen ersten Oberflächenbeschichtung aufweist, das Bauteil oder Halbzeug anschließend an der mit der ersten Oberflächenbeschichtung beschichteten ersten Oberfläche eingekerbt wird und sodann ein Durchtrennen, Lochen oder Beschneiden des Bauteils bzw. des Halbzeugs entlang der Einkerbung ausgeführt wird. Das Einkerben wird dabei so ausgeführt, dass mindestens ein Teil der dabei einkerbenden ersten Oberflächenbeschichtung entlang der beim Einkerbvorgang entstehenden Kerbflächen erhalten bleibt. Dies bedeutet mit anderen Worten, dass der Kerbvorgang so ausgeführt wird, dass die zunächst auf der einzukerbenden ersten Oberfläche des Bauteils oder des Halbzeugs vorhandene erste Oberflächenbeschichtung in die entstehende Kerbe/Einkerbung mit einsinkt bzw. eingedrückt wird und nach Abschluss des Kerbvorganges entlang der gebildeten Kerbflächen vorhanden bleibt.According to the invention, the object is achieved by a method for processing and/or producing a component in that first a component or a semi-finished product is provided which has a base body with a first surface and a first surface coating provided on the first surface, the component or semi-finished product the first surface coated with the first surface coating is then notched, and the component or semi-finished product is then severed, punched or trimmed along the notch. The notching is carried out in such a way that at least a part of the first surface coating that is notched in the process is retained along the notched surfaces created during the notching process. In other words, this means that the notching process is carried out in such a way that the first surface coating initially present on the first surface of the component or semi-finished product to be scored sinks or is pressed into the resulting notch/notch and, after completion of the notching process, along the formed notch surfaces remains present.

Das erfindungsgemäße Verfahren ist auf alle denkbaren Bauteile/Halbzeug anwendbar. Das Verfahren eignet sich insbesondere sowohl zum Bearbeiten bzw. Herstellen von metallischen Blechbauteilen, da durch das erfindungsgemäße Verfahren zudem eine Schnittgratbildung und Flitterbildung reduziert bzw. verhindert werden kann. Das zu verwendende Bauteil kann zudem ein- oder mehrschichtig aufgebaut sein und beispielsweise in Form eines Laminats vorliegen. Ferner ist das erfindungsgemäße Verfahren auch insbesondere anwendbar für Sandwichbauteile, die Schichten aus Kunststoff und beispielsweise Stahl umfassen.The method according to the invention can be applied to all conceivable components/semi-finished products. The method is particularly suitable for processing or producing metal sheet metal components, since the formation of burrs and flakes can also be reduced or prevented by the method according to the invention. The component to be used can also have a single-layer or multi-layer structure and be present, for example, in the form of a laminate. Furthermore, the method according to the invention can also be used in particular for sandwich components that comprise layers of plastic and, for example, steel.

Unter einer Oberflächenbeschichtung im Sinne der Erfindung wird allgemein eine funktionale Beschichtung verstanden, die aus ästhetischen Gründen, zur Funktionalisierung des Bauteils/Halbzeugs, aus Schutz- oder Stabilitätsgründen und insbesondere aus Gründen der chemischen bzw. mechanischen Stabilität, auf die Oberfläche des Grundkörpers des Bauteils/Halbzeugs aufgebracht ist. Die erste Oberflächenbeschichtung kann ein- oder mehrschichtig aufgebaut, stoffschlüssig mit der Grundkörperoberfläche verbunden oder lose auf dieser aufliegend sein. Ferner muss die erste Oberflächenbeschichtung die erste Oberfläche des Grundkörpers nicht vollständig bedecken, sondern kann an ausgewählten Abschnitten oder in vordefinierten Bereichen angeordnet sein.A surface coating within the meaning of the invention is generally understood to mean a functional coating that is applied to the surface of the base body of the component/semi-finished product for aesthetic reasons, for functionalization of the component/semi-finished product, for reasons of protection or stability and in particular for reasons of chemical or mechanical stability. Semi-finished product is applied. The first surface coating can be constructed in one or more layers, bonded to the surface of the base body or resting loosely on it. Furthermore, the first surface coating does not have to completely cover the first surface of the base body, but can be arranged on selected sections or in predefined areas.

Das Einkerben wird an einer solchen Stelle der ersten Oberfläche des Bauteils bzw. des Halbzeugs ausgeführt, an der die erste Oberflächenbeschichtung vorhanden ist. Durch das Einkerben entstehen sogenannte Kerbflächen, also die Flächen, die durch das Einkerben in Kerbrichtung gebildet werden. Diese Kerbflächen umfassen erfindungsgemäß mindestens einen Teil der einkerbenden ersten Oberflächenbeschichtung, was die Funktionalität des resultierenden Bauteils sowie seine Stabilität gegenüber Umwelteinflüssen und chemischen oder mechanischen Einwirkungen erhöht. Dies ist insbesondere dann gegeben, wenn die Kerbflächen durch das Einkerben zumindest zu 40%, insbesondere zumindest zu 70%, mit der ersten Oberflächenbeschichtung bedeckt sind. Vorzugsweise sind die Kerbflächen bis zu 100% mit der ersten Oberflächenbeschichtung bedeckt. Die durch die erste Oberflächenbeschichtung eingetragene Funktionalität bleibt auch nach dem Durchtrennen, Lochen oder Beschneiden im resultierenden Bauteil erhalten, nämlich zumindest an den eingekerbten Flächen, den Kerbflächen. Vielmehr können durch das Einbringen der ersten Oberflächenbeschichtung in die entstehende Kerbe, je nach verwendeter Oberflächenbeschichtung, in einem Arbeitsschritt zusätzliche Funktionalitäten in die Einkerbung und damit auch in das nach dem Lochen, Durchtrennen oder Beschneiden erhaltene Bauteil, eingebracht werden. Das Verfahren ist durch Kombination von Standardprozessen einfach, ohne hohen technischen Aufwand umsetzbar und ermöglicht die kostengünstige Bearbeitung bzw. Herstellung von hochfunktionalen und hochstabilen Bauteilen bzw. Halbzeugen mit hoher Taktung. Auf eine Nachbearbeitung zur nachträglichen Funktionalisierung oder Versiegelung der Schnittbereiche kann zudem verzichtet werden, wodurch zusätzlich Materialkosten sowie Arbeitsaufwand eingespart werden können.The notching is carried out at such a point on the first surface of the component or semi-finished product where the first surface coating is present. Notching creates so-called notch surfaces, i.e. the surfaces that are formed by notching in the direction of the notch. According to the invention, these notched surfaces comprise at least part of the notched first surface coating, which increases the functionality of the resulting component and its stability with respect to environmental influences and chemical or mechanical influences. This is the case in particular when the notched surfaces are covered by the first surface coating to at least 40%, in particular at least 70%, as a result of the notching. The notch surfaces are preferably covered up to 100% with the first surface coating. The functionality introduced by the first surface coating is retained in the resulting component even after it has been severed, punched or trimmed, namely at least on the indented surfaces, the notched surfaces. Rather, by introducing the first surface coating into the resulting notch, depending on the surface coating used, additional functionalities can be introduced into the notch and thus also into the component obtained after punching, cutting through or trimming in one work step. By combining standard processes, the method can be implemented easily without great technical effort and enables the cost-effective processing or production of highly functional and highly stable components or semi-finished products with high frequency. In addition, post-processing for subsequent functionalization or sealing of the cut areas can be dispensed with, which means that additional material costs and workload can be saved.

Die Unteransprüche beinhalten vorteilhafte Weiterbildungen und Ausgestaltungen der Erfindung.The dependent claims contain advantageous developments and refinements of the invention.

Gemäß einer vorteilhaften Weiterbildung des erfindungsgemäßen Verfahrens wird das Durchtrennen, Lochen oder Beschneiden des Bauteils oder des Halbzeugs unter Anwendung eines mechanischen Schneidverfahrens ausgeführt.According to an advantageous development of the method according to the invention, the component or the semi-finished product is severed, punched or trimmed using a mechanical cutting method.

Weiter vorteilhaft weist das Bauteil oder das Halbzeug an einer der ersten Oberfläche gegenüberliegenden zweiten Oberfläche eine zweite Oberflächenbeschichtung auf.Further advantageously, the component or the semi-finished product has a second surface coating on a second surface opposite the first surface.

Eine weitere vorteilhafte Weiterbildung des erfindungsgemäßen Verfahrens ist dadurch gekennzeichnet, dass das Bauteil bzw. das Halbzeug sowohl an der mit der ersten Oberflächenbeschichtung beschichteten ersten Oberfläche als auch an der mit der zweiten Oberflächenbeschichtung beschichteten zweiten Oberfläche eingekerbt wird. Mit anderen Worten wird durch die erste Oberflächenbeschichtung, den Grundkörper des Bauteils/des Halbzeugs und die zweite Oberflächenbeschichtung eine Art Schichtstruktur gebildet, bei der der Grundkörper des Bauteils/des Halbzeugs zwischen den beiden Oberflächenbeschichtungen angeordnet ist. Die erste und die zweite Oberflächenbeschichtung können gleichartig ausgebildet sein oder sich in Art, Form, Gestaltung und/oder Funktionalität unterscheiden. Durch den beidseitigen Einkerbvorgang kann ein sich anschließendes Durchtrennen, Lochen oder Beschneiden mit verbesserter Schnittqualität erleichtert und die erste bzw. zweite Oberflächenbeschichtung entlang eines besonders großen Bereichs der Kerbflächen und damit auch in unmittelbarer Umgebung des entstehenden Schnittbereichs bzw. Lochbereichs, also an Lochrändern, Lochkanten, Laibungen, Schnittkanten, Schnittflächen und dergleichen, bereitgestellt werden. Die Funktionalisierung des entstehenden Bauteils wird damit maximiert.A further advantageous development of the method according to the invention is characterized in that the component or semi-finished product is notched both on the first surface coated with the first surface coating and on the second surface coated with the second surface coating. In other words, a type of layered structure is formed by the first surface coating, the base body of the component/semi-finished product and the second surface coating, in which the base body of the component/semi-finished product is arranged between the two surface coatings. The first and the second surface coating can be of the same design or differ in type, shape, design and/or functionality. Due to the notching process on both sides, a subsequent severing, punching or trimming with improved cutting quality can be facilitated and the first or second surface coating can be applied along a particularly large area of the notched surfaces and thus also in the immediate vicinity of the resulting cut area or hole area, i.e. on hole edges, hole edges, Reveals, cut edges, cut surfaces and the like are provided. The functionalization of the resulting component is thus maximized.

Das Einkerben an der mit der ersten Oberflächenbeschichtung beschichteten ersten Oberfläche kann mit gewünschter Kerbtiefe ausgeführt werden. Wir nur von Seiten der ersten Oberflächenbeschichtung her eingekerbt, so kann eine Einkerbtiefe insbesondere bis zu 90% der Dicke des Grundkörpers, insbesondere aber mindestens bis zu 80% der Dicke des Grundkörpers ausgeführt werden. Die Dicke des Grundkörpers wird dabei in der vorgesehenen Kerbrichtung bestimmt, also der Richtung, in der der Einkerbvorgang ausgeführt werden soll bzw. ausgeführt wurde.The scoring on the first surface coated with the first surface coating can be performed with a desired scoring depth. If the notch is only from the side of the first surface coating, the notch depth can be up to 90% of the thickness of the base body, but in particular at least up to 80% of the thickness of the base body. The thickness of the base body is determined in the intended notching direction, ie the direction in which the notching process is to be carried out or was carried out.

Um eine besonders gute Funktionalisierung im entstehenden Bauteil bereitzustellen, ist gemäß einer weiteren vorteilhaften Weiterbildung vorgesehen, dass das Einkerben an der mit der ersten Oberflächenbeschichtung beschichteten ersten Oberfläche und/oder an der mit der zweiten Oberflächenbeschichtung beschichteten zweiten Oberfläche jeweils bis zu einer Tiefe von weniger als der Hälfte der Dicke des Grundkörpers des Bauteils/Halbzeugs, insbesondere bis zu einer Tiefe von 10 bis 40% der Dicke des Grundkörpers, ausgeführt wird. Die Dicke des Grundkörpers wird dabei in der vorgesehenen Kerbrichtung bestimmt, also der Richtung, in der der Einkerbvorgang ausgeführt werden soll. Ein beidseitiges Einkerben mit je einer Tiefe von 50% der Dicke des Grundkörpers hat sich hingegen als eher nachteilig herausgestellt, da so die Kerbnasen der gegenüberliegend gebildeten Einkerbungen aneinander stoßen.In order to provide a particularly good functionalization in the resulting component, it is provided according to a further advantageous development that the notching on the first surface coated with the first surface coating and/or on the second surface coated with the second surface coating is to a depth of less than half the thickness of the base body of the component/semi-finished product, in particular to a depth of 10 to 40% of the thickness of the base body. The thickness of the base body is determined in the intended notching direction, ie the direction in which the notching process is to be carried out. A notch on both sides with one each On the other hand, a depth of 50% of the thickness of the base body has turned out to be rather disadvantageous, since the notched noses of the notches formed opposite one another abut.

Um die Schnittqualität weiter zu verbessern erfolgt ferner vorteilhaft das Einkerben in Kerbrichtung symmetrisch, beispielsweise zylindrisch, kegelförmig oder in V-Form. Dies bedeutet mit anderen Worten, dass die Form der Einkerbung symmetrisch ausgebildet wird.In order to further improve the quality of the cut, the notching is advantageously carried out symmetrically in the direction of the notch, for example cylindrically, conically or in a V-shape. In other words, this means that the shape of the notch is formed symmetrically.

Um den technischen bzw. kostentechnischen Aufwand des erfindungsgemäßen Verfahrens weiter zu reduzieren, wird das Einkerben vorteilhaft mittels Prägen, Rollprägen, Walzen oder Rändeln ausgeführt. Die hier genannten Verfahren sind besonders gut geeignet das Einkerben so zu gestalten, dass sich die erste und/oder zweite Oberflächenbeschichtung an den entsprechenden Kerbflächen ausbildet bzw. wiederfindet.In order to further reduce the technical and cost-related complexity of the method according to the invention, the notching is advantageously carried out by means of embossing, roller embossing, rolling or knurling. The methods mentioned here are particularly well suited to designing the notching in such a way that the first and/or second surface coating is formed or found again on the corresponding notching surfaces.

Zur Förderung einer gratlosen Durchtrennung, Lochung oder Beschneidung, ist weiter vorteilhaft vorgesehen, dass das Einkerben an der mit der ersten Oberflächenbeschichtung beschichteten ersten Oberfläche und an der mit der zweiten Oberflächenbeschichtung beschichteten zweiten Oberfläche symmetrisch ausgeführt wird. Symmetrisch bedeutet hierbei mit derselben Kerbform und auch mit derselben Kerbtiefe.In order to promote a burr-free severing, punching or trimming, it is further advantageously provided that the notching is performed symmetrically on the first surface coated with the first surface coating and on the second surface coated with the second surface coating. In this context, symmetrical means with the same notch shape and also with the same notch depth.

Wie bereits beschrieben, ist die Oberflächenbeschichtung, und damit sowohl die erste Oberflächenbeschichtung als auch die zweite Oberflächenbeschichtung, im Einzelnen nicht beschränkt. Vorteilhaft ist bzw. sind die Oberflächenbeschichtungen ausgewählt aus mindestens einer Zinkschicht, mindestens einer Zink-Aluminiumschicht, mindestens einer adhäsiven Schicht und/oder mindestens einer polymeren Schicht.As already described, the surface coating, and thus both the first surface coating and the second surface coating, is not restricted in detail. The surface coating(s) is/are advantageously selected from at least one zinc layer, at least one zinc-aluminum layer, at least one adhesive layer and/or at least one polymeric layer.

Weitere vorteilhafte Beschichtungen sind beispielsweise KTL (Kathodischer Tauchlack)-Schichten und Lacke, z.B. für die Anwendung des Verfahrens auf bereits fertig beschichtete Bauteile/Halbzeuge (weiße Ware).Other advantageous coatings are, for example, KTL (cathodic dip paint) layers and paints, e.g. for using the process on components/semi-finished products (white goods) that have already been coated.

Hierbei sind Schichten aus Zink zur Verbesserung der Korrosionsbeständigkeit des Bauteils bzw. des Halbzeugs von Vorteil. Dieser Korrosionsschutz dehnt sich aufgrund des erfindungsgemäßen Verfahrens sodann auf die Kerbflächen und, aufgrund der Fernwirkung des Zinks, auch auf die - im Vergleich zum beschriebenen Stand der Technik deutlich geringeren verbleibenden - Schnittflächen, Schnittkanten, Lochränder, Laibungen und dergleichen aus, die nach dem Durchtrennen, Lochen oder Beschneiden des Bauteils bzw. des Halbzeugs am entstehenden nutzseitigen Bauteil zurückbleiben. Hierbei hat sich herausgestellt, dass eine mindestens 40%-ige, insbesondere eine mindestens 70%-ige Bedeckung der Kerbflächen mit Zink, aufgrund der Fernwirkung des Zinks, ausreichend ist, um einen hohen Korrosionsschutz im resultierenden Bauteil/Halbzeug zu gewährleisten.Here, layers of zinc are advantageous for improving the corrosion resistance of the component or semi-finished product. Due to the method according to the invention, this corrosion protection then extends to the notched surfaces and, due to the long-distance effect of the zinc, also to the cut surfaces, cut edges, hole edges, soffits and the like - which are significantly smaller compared to the described prior art remain on the resulting functional component after the component or semi-finished product has been severed, punched or trimmed. It has been found here that at least 40%, in particular at least 70%, coverage of the notch surfaces with zinc, due to the long-distance effect of the zinc, is sufficient to ensure high corrosion protection in the resulting component/semi-finished product.

Adhäsive Schichten eignen sich hingegen zum Eintrag einer weiteren Funktionalität an die Kerbflächen und somit auch an die Schnittbereiche, also die Schnittflächen, Schnittkanten, Lochkanten, Lochränder, Laibungen und dergleichen. Dies ist insbesondere von Vorteil, wenn mit den beim Trennvorgang, Schneid- oder Lochvorgang entstehenden Bereichen ein weiteres Bauteil/Halbzeug mittels adhäsiver Kräfte verbunden werden soll. Das erfindungsgemäße Verfahren erspart hierbei einen komplexen, zusätzlichen Schritt des nachträglichen Einbringens eines Adhäsivs in den Kerb- und Schnittbereich.Adhesive layers, on the other hand, are suitable for adding a further functionality to the notched surfaces and thus also to the cut areas, ie the cut surfaces, cut edges, hole edges, hole edges, reveals and the like. This is particularly advantageous if another component/semi-finished product is to be connected by means of adhesive forces to the areas created during the separating, cutting or perforating process. The method according to the invention saves a complex, additional step of subsequently introducing an adhesive into the notch and cut area.

Ferner kann die entsprechende Oberflächenbeschichtung auch mindestens eine polymere Schicht umfassen. Beispielhaft seien hier Lackschichten, also Schutzlacke, Farblacke, Korrosionsschutzlacke und dergleichen, genannt. Die jeweilige Funktionalität wird durch das Einkerben im erfindungsgemäßen Verfahren auf die Kerbflächen auch auf die Schnittbereiche ausgeweitet. Das entstehende Bauteil zeichnet sich durch eine hohe Stabilität und Funktionalität aus.Furthermore, the corresponding surface coating can also comprise at least one polymeric layer. Paint layers, ie protective paints, colored paints, anti-corrosion paints and the like, are mentioned here by way of example. The respective functionality is also extended to the cut areas by the notching in the method according to the invention on the notched surfaces. The resulting component is characterized by high stability and functionality.

Vorteilhaft beträgt eine Dicke des Grundkörpers des Bauteils/des Halbzeugs maximal 3 mm und insbesondere 0,5 bis 2,5 mm. Hierdurch kann eine gute Ausbreitung der Oberflächenbeschichtung(en) auf die entsprechende(n) Einkerbung(en) gesichert werden.A thickness of the base body of the component/semi-finished product is advantageously at most 3 mm and in particular 0.5 to 2.5 mm. This can ensure good spreading of the surface coating(s) onto the corresponding indentation(s).

Weiter vorteilhaft beträgt eine Schichtdicke der ersten Oberflächenbeschichtung und/oder der zweiten Oberflächenbeschichtung auf der jeweiligen Oberfläche des Bauteils/Halbzeugs maximal 20 µm und insbesondere maximal 15 µm. Die Schichtdicke der jeweiligen Oberflächenbeschichtung wird senkrecht zur entsprechenden Oberfläche des Bauteils/Halbzeugs bestimmt und kann anhand von Schliffbildern ermittelt werden. Liegt die Schichtdicke der Oberflächenbeschichtung(en) im angegebenen Bereich, ist ausreichend Oberflächenbeschichtung zur Bedeckung der Einkerbung vorhanden, und zudem maximal so viel Oberflächenbeschichtung vorhanden, dass der Trennvorgang, Lochvorgang oder Beschneidungsvorgang besonders exakt ausgeführt werden kann.A further advantageous layer thickness of the first surface coating and/or the second surface coating on the respective surface of the component/semi-finished product is a maximum of 20 μm and in particular a maximum of 15 μm. The layer thickness of the respective surface coating is determined perpendicular to the corresponding surface of the component/semi-finished product and can be determined using micrographs. If the layer thickness of the surface coating(s) is in the specified range, there is sufficient surface coating to cover the indentation and, moreover, there is at most enough surface coating that the cutting process, Punching process or trimming process can be carried out particularly precisely.

Gemäß einer weiteren vorteilhaften Weiterbildung des Verfahrens wird das Einkerben so ausgeführt, dass eine Schichtdicke der ersten Oberflächenbeschichtung entlang der Kerbflächen mindestens 20%, insbesondere mindestens 30% der Schichtdicke der ersten Oberflächenbeschichtung auf der ersten Oberfläche des Bauteils/Halbzeugs beträgt. Gleichzeitig oder alternativ wird das Einkerben so ausgeführt, dass eine Schichtdicke der zweiten Oberflächenbeschichtung entlang der Kerbflächen mindestens 20%, insbesondere mindestens 30% der Schichtdicke der zweiten Oberflächenbeschichtung auf der zweiten Oberfläche des Bauteils/Halbzeugs beträgt. Die Schichtdicke der jeweiligen Oberflächenbeschichtung entlang der Kerbflächen wird senkrecht zur entsprechenden Kerbfläche ermittelt. Hierdurch kann besonders gut gewährleistet werden, dass die Funktionalität, die durch die jeweilige Oberflächenbeschichtung eingetragen wird, auch in besonders hohem Maße auf den Kerbflächen und damit auf den Schnittflächen, Schnittkanten, Lochrändern, Laibungen und dergleichen, erhalten wird.According to a further advantageous development of the method, the notching is carried out in such a way that a layer thickness of the first surface coating along the notched surfaces is at least 20%, in particular at least 30%, of the layer thickness of the first surface coating on the first surface of the component/semi-finished product. Simultaneously or alternatively, the notching is carried out in such a way that a layer thickness of the second surface coating along the notched surfaces is at least 20%, in particular at least 30%, of the layer thickness of the second surface coating on the second surface of the component/semi-finished product. The layer thickness of the respective surface coating along the notched surfaces is determined perpendicular to the corresponding notched surface. In this way it can be ensured particularly well that the functionality introduced by the respective surface coating is also retained to a particularly high degree on the notched surfaces and thus on the cut surfaces, cut edges, hole edges, soffits and the like.

Ferner vorteilhaft ist vorgesehen, dass das Einkerben so ausgeführt wird, dass die Schichtdicke der ersten Oberflächenbeschichtung entlang der Kerbflächen und/oder die Schichtdicke der zweiten Oberflächenbeschichtung entlang der Kerbflächen einen Gradienten beschreiben. Insbesondere nimmt die Schichtdicke der Oberflächenbeschichtung von der Oberfläche des Bauteils/Halbzeugs entlang der Kerbrichtung gleichförmig oder stufenweise ab, so dass mit minimalem Aufwand an Oberflächenbeschichtungsmaterial eine maximale Funktionalisierung im resultierenden Bauteil/Halbzeug erzielt werden kann.Provision is also advantageously made for the notching to be carried out in such a way that the layer thickness of the first surface coating along the notched surfaces and/or the layer thickness of the second surface coating along the notched surfaces describe a gradient. In particular, the layer thickness of the surface coating from the surface of the component/semi-finished product decreases uniformly or in stages along the direction of the notch, so that maximum functionalization in the resulting component/semi-finished product can be achieved with minimal expenditure on surface coating material.

Eine weitere vorteilhafte Weiterbildung des erfindungsgemäßen Verfahrens sieht vor, dass das Einkerben des Bauteils oder des Halbzeugs an der mit der ersten Oberflächenbeschichtung beschichteten ersten Oberfläche und/oder an der mit der zweiten Oberflächenbeschichtung beschichteten zweiten Oberfläche im gleichen Prozessschritt wie das Durchtrennen, Lochen oder Beschneiden des Bauteils oder des Halbzeugs entlang der Einkerbung ausgeführt wird. Dies reduziert die Anzahl der Prozessschritte und vereinfacht damit das erfindungsgemäße Verfahren. Bei Bauteilen oder Halbzeugen aus Kohlenstofffaserverbundkunststoffen (CFK) kann das Einkerben beispielweise bereits im Formgebungsschritt erfolgen, durch entsprechende Gestaltung des Formwerkzeugs. Bei Bauteilen oder Halbzeugen aus metallischem Blech kann die Einkerbung beispielsweise im Ziehwerkzeug mit eingedrückt werden.A further advantageous development of the method according to the invention provides that the notching of the component or semi-finished product on the first surface coated with the first surface coating and/or on the second surface coated with the second surface coating takes place in the same process step as the cutting through, perforating or trimming of the Component or semi-finished product is performed along the notch. This reduces the number of process steps and thus simplifies the method according to the invention. In the case of components or semi-finished products made of carbon fiber composite plastics (CFRP), for example, the notching can already take place in the shaping step by appropriate design of the molding tool. In the case of components or semi-finished products made of sheet metal, the notch can be pressed in with the drawing tool, for example.

Ebenfalls erfindungsgemäß wird auch ein Bauteil beschrieben, das nach dem vorstehend offenbarten Verfahren hergestellt ist. Das Bauteil zeichnet sich durch eine hohe Funktionalität und Stabilität aus.Likewise according to the invention, a component is also described which is produced according to the method disclosed above. The component is characterized by high functionality and stability.

Vorteilhaft ist das Bauteil dadurch gekennzeichnet, dass mindestens ein Teil der ersten und/oder zweiten Oberflächenbeschichtung entlang von Kerbflächen erhalten ist.The component is advantageously characterized in that at least part of the first and/or second surface coating is preserved along notched surfaces.

Ferner erfindungsgemäß wird auch eine Vorrichtung zur Durchführung des vorstehend beschriebenen Verfahrens offenbart.Furthermore, according to the invention, a device for carrying out the method described above is also disclosed.

Insbesondere ist die Vorrichtung derart ausgebildet, dass das Einkerben und das Durchtrennen, Lochen oder Beschneiden des Bauteils oder des Halbzeugs in einem Arbeitsschritt ausgeführt werden kann. Beispielhaft wird eine Vorrichtung in Form eines Lochwerkzeugs bereitgestellt, das so ausgebildet ist, dass das Einkerben durch einen Niederhalter und eine Schneidmatrize und das eigentliche Lochen durch einen Lochstempel in einem einzigen Presshub ausgeführt werden kann.In particular, the device is designed in such a way that the notching and the severing, piercing or trimming of the component or semi-finished product can be carried out in one work step. By way of example, a device is provided in the form of a punching tool which is designed in such a way that the notching can be carried out using a hold-down device and a cutting die and the actual punching can be carried out using a punch in a single pressing stroke.

Weitere Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung und den Figuren. Es zeigen:

Figur 1
ein Schema eines Verfahrensablaufs eines Verfahrens zum Bearbeiten und/oder Herstellen eines Bauteils gemäß einer ersten Weiterbildung der Erfindung und
Figur 2
ein Schema eines Verfahrensablaufs eines Verfahrens zum Bearbeiten und/oder Herstellen eines Bauteils gemäß einer zweiten Weiterbildung der Erfindung.
Further details, features and advantages of the invention result from the following description and the figures. Show it:
figure 1
a diagram of a method sequence of a method for processing and/or manufacturing a component according to a first development of the invention and
figure 2
a scheme of a process sequence of a method for processing and / or manufacturing a component according to a second development of the invention.

Die vorliegende Erfindung wird anhand von Ausführungsbeispielen im Detail erläutert. In den Figuren sind nur die hier interessierenden Aspekte des erfindungsgemäßen Verfahrens dargestellt, alle übrigen Aspekte sind der Übersichtlichkeit halber weggelassen. Zudem beziffern gleiche Bezugszeichen gleiche Elemente.The present invention is explained in detail using exemplary embodiments. Only the aspects of the method according to the invention that are of interest here are shown in the figures; all other aspects have been omitted for the sake of clarity. In addition, the same reference symbols designate the same elements.

Figur 1 ist eine schematische Darstellung, die den Verfahrensablauf eines Verfahrens zum Bearbeiten und/oder Herstellen eines Bauteils gemäß einer ersten Ausführungsform der vorliegenden Erfindung aufzeigt. Hierbei ist anzumerken, dass das Verfahren grundsätzlich sowohl für die Bearbeitung bzw. Herstellung von Halbzeugen als auch von Bauteilen geeignet ist. In den in den Figuren dargestellten Ausführungsbeispielen wird jedoch lediglich Bezug auf die Herstellung bzw. Bearbeitung eines Bauteils genommen. Analoge Ausführungen finden jedoch auch Anwendung auf die Bearbeitung oder Herstellung von Halbzeugen. figure 1 is a schematic representation of the process flow of a method for processing and / or manufacturing a component according to a first embodiment of the present invention. It should be noted here that the process is basically suitable for the processing or production of semi-finished products as well as components. In the exemplary embodiments illustrated in the figures, however, reference is only made to the production or processing of a component. However, analogous statements also apply to the processing or production of semi-finished products.

Zunächst wird ein Bauteil 1 bereitgestellt. Das Bauteil 1 ist im Einzelnen nicht beschränkt und kann beispielsweise ein Blechbauteil oder ein Sandwichbauteil sein. Das Bauteil 1 umfasst einen Grundkörper 2. Der Grundkörper 2 kann ein- oder mehrschichtig aufgebaut sein. Wie in Figur 1 dargestellt, wird der Grundkörper 2 beispielhaft aus einer Schicht gebildet, die insbesondere ein Metallblech mit einer Dicke DG von bis zu 3 mm ist.First, a component 1 is provided. The component 1 is not restricted in detail and can be a sheet metal component or a sandwich component, for example. The component 1 comprises a base body 2. The base body 2 can be constructed in one or more layers. As in figure 1 shown, the base body 2 is formed by way of example from a layer which is in particular a sheet metal with a thickness D G of up to 3 mm.

Der Grundkörper 2 weist eine erste Oberfläche 3 und eine der ersten Oberfläche 3 gegenüberliegende zweite Oberfläche 4 auf. Auf der ersten Oberfläche 3 ist eine erste Oberflächenbeschichtung 5 vorgesehen und auf der zweiten Oberfläche 4 ist eine zweite Oberflächenbeschichtung 6 vorgesehen.The base body 2 has a first surface 3 and a second surface 4 opposite the first surface 3 . A first surface coating 5 is provided on the first surface 3 and a second surface coating 6 is provided on the second surface 4 .

Die Oberflächenbeschichtungen 5, 6 können gleich oder unterschiedlich, also in Art und Ausbildung gleich oder unterschiedlich sein, lose auf der jeweiligen Oberfläche 3, 4 aufliegen oder stoffschlüssig mit der entsprechenden Oberfläche 3, 4 verbunden sein. Beispielhafte Oberflächenbeschichtungen umfassen mindestens eine Zinkschicht, mindestens eine Zink-Aluminiumschicht, mindestens eine adhäsive Schicht und/oder mindestens eine polymere Schicht.The surface coatings 5, 6 can be the same or different, that is, they can be the same or different in type and design, they can lie loosely on the respective surface 3, 4, or they can be connected to the corresponding surface 3, 4 with a material bond. Exemplary surface coatings include at least one zinc layer, at least one zinc-aluminum layer, at least one adhesive layer, and/or at least one polymeric layer.

Die erste Oberflächenbeschichtung 5 und die zweite Oberflächenbeschichtung 6 bedecken im vorliegenden Beispielsfall die entsprechende erste Oberfläche 3 und zweite Oberfläche 4 vollständig. Es ist aber auch möglich, dass die Oberflächenbeschichtung 5, 6 nur in bestimmten Teilabschnitten der jeweiligen Oberfläche 3, 4, also dort, wo das Einkerben ausgeführt werden soll, vorgesehen ist. Die erste Oberflächenbeschichtung 5 hat eine Schichtdicke auf der ersten Oberfläche 3 des Bauteils 1, die mit DOb1 gekennzeichnet ist. Sie wird senkrecht zur ersten Oberfläche 3 des Bauteils 1 bestimmt. Die zweite Oberflächenbeschichtung 6 hat eine Schichtdicke auf der zweiten Oberfläche 4 des Bauteils 1, die mit DOb2 gekennzeichnet ist. Sie wird senkrecht zur zweiten Oberfläche 4 des Bauteils 1 bestimmt. Die Schichtdicke kann anhand von Schliffbildern ermittelt werden.In the present example, the first surface coating 5 and the second surface coating 6 completely cover the corresponding first surface 3 and second surface 4 . However, it is also possible for the surface coating 5, 6 to be provided only in certain partial sections of the respective surface 3, 4, ie where the notching is to be carried out. The first surface coating 5 has a layer thickness on the first surface 3 of the component 1 which is marked with D Ob1 . It is determined perpendicular to the first surface 3 of the component 1 . The second surface coating 6 has a layer thickness on the second surface 4 of the component 1, which is marked with D Ob2 . It is determined perpendicular to the second surface 4 of the component 1 . The layer thickness can be determined using micrographs.

In einem folgenden Verfahrensschritt erfolgt ein Einkerben des Bauteils 1 an der mit der ersten Oberflächenbeschichtung 5 beschichteten ersten Oberfläche 3 unter Erhalt einer Einkerbung 8. Das Einkerben kann mittels eines geeigneten Werkzeugs ausgeführt werden, insbesondere mittels eines Prägewerkzeugs. Prägewerkzeuge sind sehr gut geeignet während des Einkerbens mindestens einen Teil der dabei einkerbenden ersten Oberflächenbeschichtung 5 entlang der sich bildenden Kerbflächen 7 zu erhalten. Mit anderen Worten sinkt beim Einkerbvorgang nicht nur ein Bereich des Grundkörpers 1 ein, sondern ebenfalls die darauf befindliche erste Oberflächenbeschichtung 5. Die erste Oberflächenbeschichtung 5 kann insbesondere auch in die Einkerbung 8 eingedrückt werden. Hierbei ist es möglich, dass durch das Einkerben die Schichtdicke der ersten Oberflächenbeschichtung DOb1, die senkrecht zur ersten Oberfläche 3 des Bauteils 1 bestimmt wird, verdichtet. Hieraus resultiert, dass eine Schichtdicke der ersten Oberflächenbeschichtung entlang der Kerbflächen B kleiner ist als die Schichtdicke der Oberflächenbeschichtung DOb1 auf der ersten Oberfläche 3 des Bauteils 1. Die Schichtdicke der ersten Oberflächenbeschichtung entlang der Kerbflächen B wird senkrecht zu den entsprechenden Kerbflächen bestimmt.In a subsequent method step, the component 1 is notched on the first surface 3 coated with the first surface coating 5, thereby obtaining a notch 8. The notching can be carried out using a suitable tool, in particular using an embossing tool. Embossing tools are very well suited to retaining at least part of the first surface coating 5 that is being scored along the notched surfaces 7 that are being formed during the scoring. In other words, not only does a region of the base body 1 sink during the notching process, but also the first surface coating 5 located thereon. The first surface coating 5 can in particular also be pressed into the notch 8 . It is possible here that the layer thickness of the first surface coating D Ob1 , which is determined perpendicularly to the first surface 3 of the component 1 , is compressed as a result of the notching. The result is that a layer thickness of the first surface coating along the notched areas B is smaller than the layer thickness of the surface coating D Ob1 on the first surface 3 of the component 1. The layer thickness of the first surface coating along the notched areas B is determined perpendicular to the corresponding notched areas.

Vorteilhaft beträgt die Schichtdicke der ersten Oberflächenbeschichtung DOb1 auf der ersten Oberfläche 3 des Bauteils 1 maximal 20 µm und insbesondere maximal 15 µm. Insbesondere wird das Einkerben so ausgeführt, dass die Schichtdicke der ersten Oberflächenbeschichtung entlang der Kerbflächen B mindestens 20% und insbesondere mindestens 30% der Schichtdicke der ersten Oberflächenbeschichtung auf der ersten Oberfläche des Bauteils DOb1 beträgt. Dies ist im vorliegenden Beispiel gezeigt. Ferner ist es möglich, dass die Schichtdicke der ersten Oberflächenbeschichtung entlang der Kerbflächen B einen Gradienten beschreibt und beispielhaft in Kerbrichtung K abnimmt.The layer thickness of the first surface coating D Ob1 on the first surface 3 of the component 1 is advantageously at most 20 μm and in particular at most 15 μm. In particular, the notching is carried out in such a way that the layer thickness of the first surface coating along the notched areas B is at least 20% and in particular at least 30% of the layer thickness of the first surface coating on the first surface of the component D Ob1 . This is shown in this example. It is also possible for the layer thickness of the first surface coating to describe a gradient along the notch surfaces B and to decrease in the notch direction K, for example.

Wie in Figur 1 beispielhaft gezeigt, erfolgt das Einkerben in Kerbrichtung K symmetrisch, was in der Schnittansicht durch die V-Form der Einkerbung 8 dargestellt ist.As in figure 1 shown by way of example, the notching in notching direction K takes place symmetrically, which is illustrated in the sectional view by the V-shape of notch 8 .

Wird das Einkerben, wie hier gezeigt, von einer Seite des Bauteils 1 aus, ausgeführt, so ist es bevorzugt, wenn die Einkerbtiefe möglichst groß ist. Die Einkerbtiefe, die in Kerbrichtung bestimmt wird, kann bis zu einer Tiefe von weniger als der Hälfte der Dicke des Grundkörpers DG, insbesondere aber bis zu einer Tiefe von 90% der Dicke des Grundkörpers 1 DG, ausgeführt werden.If the notching, as shown here, is carried out from one side of the component 1, then it is preferable if the notching depth is as great as possible. The depth of the notch, which is determined in the direction of the notch, can be made to a depth of less than half the thickness of the base body D G , but in particular to a depth of 90% of the thickness of the base body 1 D G .

In einem sich anschließenden Schritt erfolgt ein Durchtrennen, Lochen oder Beschneiden des Bauteils, beispielsweise mittels eines mechanischen Schnittwerkzeugs 10 entlang der Einkerbung 8 und in Figur 1 beispielhaft in Kerbrichtung K. Als Schnittwerkzeug 10 kommen alle möglichen mechanischen Schnittwerkzeuge in Frage, beispielsweise ein Rollschnittwerkzeug, Scherschnittwerkzeug, Kerbbruchschnittwerkzeug, Stanzwerkzeug oder ein Schlagmesser, die ein Durchtrennen, Lochen oder Beschneiden des Bauteils 1 mit gewünschter Form ermöglichen. Im hier dargestellten Beispiel wird ein Stanzwerkzeug zum Erzeugen einer zylindrischen Aussparung im Bauteil 1 verwendet. Das resultierende Bauteil 1 weist über einen großen Teilbereich des Stanzloches 11 hinweg die erste Oberflächenbeschichtung 5 auf. Lediglich in einem kleinen Abschnitt des Stanzloches sind die Oberflächen des Grundkörpers 9 freiliegend. Die durch die erste Oberflächenbeschichtung 5 eingetragene Funktion bleibt somit auch im resultierenden Bauteil 1 erhalten und kann sogar auf die Schnittbereiche im Bauteil 1 ausgedehnt werden. Eine nachträgliche Versiegelung oder aufwendige Nachbehandlung zur Erhöhung der Schutzwirkung des Bauteils 1 oder aus ästhetischen Gründen oder Stabilitätsgründen, ist nicht erforderlich. Zudem kann, je nach verwendeter erster Oberflächenbeschichtung 5 auch eine zusätzliche Funktionalität in die Einkerbung 8 und damit auch in das nach dem Trennvorgang erhaltene Bauteil, eingebracht werden. Dies wäre beispielsweise der Fall, wenn die erste Oberflächenbeschichtung 5 z.B. eine adhäsive Beschichtung wäre. Die adhäsiven Eigenschaften wären nach dem Trennvorgang auch auf den Kerbflächen 7 vorhanden. Alternative funktionale Beschichtungen sind Farblacke, Schutzlacke und dergleichen. Das Verfahren ist ohne hohen technischen Aufwand ausführbar und ermöglicht die kostengünstige Herstellung von hochfunktionalen und hochstabilen Bauteilen mit hoher Taktung.In a subsequent step, the component is severed, punched or trimmed, for example by means of a mechanical cutting tool 10 along the notch 8 and in figure 1 for example in notch direction K. All possible mechanical cutting tools can be used as the cutting tool 10, for example a rolling cut tool, shearing cut tool, notched cutting tool, punching tool or a fly cutter, which enable the component 1 to be severed, punched or trimmed with the desired shape. In the example shown here, a punching tool is used to create a cylindrical recess in component 1. The resulting component 1 has the first surface coating 5 over a large partial area of the punched hole 11 . The surfaces of the base body 9 are exposed only in a small section of the punched hole. The function introduced by the first surface coating 5 is thus retained in the resulting component 1 and can even be extended to the cut areas in component 1. Subsequent sealing or costly post-treatment to increase the protective effect of the component 1 or for aesthetic or stability reasons is not necessary. In addition, depending on the first surface coating 5 used, additional functionality can also be introduced into the notch 8 and thus also into the component obtained after the separating process. This would be the case, for example, if the first surface coating 5 were an adhesive coating, for example. The adhesive properties would also be present on the notched surfaces 7 after the separation process. Alternative functional coatings are colored lacquers, protective lacquers and the like. The method can be carried out without great technical effort and enables the cost-effective production of highly functional and highly stable components with high clock rates.

Figur 2 ist eine schematische Darstellung, die den Verfahrensablauf eines Verfahrens zum Bearbeiten und/oder Herstellen eines Bauteils gemäß einer zweiten Ausführungsform der vorliegenden Erfindung aufzeigt. figure 2 FIG. 12 is a schematic illustration showing the process flow of a method for processing and/or manufacturing a component according to a second embodiment of the present invention.

Im Unterschied zu dem in Figur 1 dargestellten Verfahren, unterscheidet sich das in Figur 2 dargestellte Verfahren dadurch, dass sowohl an der mit der ersten Oberflächenbeschichtung 5 beschichteten ersten Oberfläche 3 als auch an der mit der zweiten Oberflächenbeschichtung 6 beschichteten zweiten Oberfläche 4, also von sich gegenüber liegenden Seiten des Bauteils 1, eingekerbt wird. Es entstehen die Einkerbungen 8 und 12.In contrast to the in figure 1 the procedure shown differs in figure 2 illustrated method in that both the first surface 3 coated with the first surface coating 5 and the second surface 4 coated with the second surface coating 6, that is to say from opposite sides of the component 1, are notched. Notches 8 and 12 appear.

Das Einkerben an der mit der ersten Oberflächenbeschichtung 5 beschichteten ersten Oberfläche 3 und an der mit der zweiten Oberflächenbeschichtung 6 beschichteten zweiten Oberfläche 4 wird bis zu einer Tiefe von jeweils weniger als der Hälfte der Dicke des Grundkörpers DG, insbesondere bis zu einer Tiefe von 10 bis 40% der Dicke des Grundkörpers DG, ausgeführt. So wird verhindert, dass die entstehenden Kerbnasen aneinanderstoßen. Je tiefer die Einkerbung 8, 12 ausgeführt wird, desto größere Bereiche der Kerbflächen 7 werden mit der jeweiligen Oberflächenbeschichtung 5, 6, bedeckt.The notching on the first surface 3 coated with the first surface coating 5 and on the second surface 4 coated with the second surface coating 6 is made to a depth of less than half the thickness of the base body D G , in particular to a depth of 10 up to 40% of the thickness of the base body D G executed. This prevents the resulting notched lugs from colliding. The deeper the notch 8, 12 is made, the larger the areas of the notch surfaces 7 are covered with the respective surface coating 5, 6.

Das Einkerben an der mit der ersten Oberflächenbeschichtung 5 beschichteten ersten Oberfläche 3 und an der mit der zweiten Oberflächenbeschichtung 6 beschichteten zweiten Oberfläche 4 wird symmetrisch ausgeführt. Somit sind die Einkerbungen 8 und 12 in Form und Kerbtiefe gleich ausgebildet. Hierdurch werden die erste Oberflächenbeschichtung 5 und die zweite Oberflächenbeschichtung 6 in die Kerbflächen 7 der jeweiligen Einkerbungen 8, 12 eingebracht und funktionalisieren somit die Kerbflächen 7 von Seiten der beiden Oberflächen 3, 4 des Bauteils 1. So wird es leichter möglich einen möglichst großen Kerbflächenbereich zu funktionalisieren.The scoring on the first surface 3 coated with the first surface coating 5 and on the second surface 4 coated with the second surface coating 6 is performed symmetrically. Thus, the notches 8 and 12 have the same shape and notch depth. As a result, the first surface coating 5 and the second surface coating 6 are introduced into the notched surfaces 7 of the respective notches 8, 12 and thus functionalize the notched surfaces 7 on the sides of the two surfaces 3, 4 of the component 1. This makes it easier to have the largest possible notched surface area functionalize.

Wiederum sinkt beim Einkerbvorgang nicht nur ein Bereich des Grundkörpers 1 ein, sondern ebenfalls die darauf befindliche erste Oberflächenbeschichtung 5 und die zweite Oberflächenbeschichtung 6. Hierbei ist es ferner möglich, dass durch das Einkerben die Schichtdicke der ersten Oberflächenbeschichtung DOb1, die senkrecht zur ersten Oberfläche 3 des Bauteils 1 bestimmt wird, sowie die Schichtdicke der zweiten Oberflächenbeschichtung DOb2, die senkrecht zur zweiten Oberfläche 4 des Bauteils 1 bestimmt wird, verdichten. Hieraus resultiert, dass eine Schichtdicke der ersten Oberflächenbeschichtung entlang der Kerbflächen B kleiner ist als die Schichtdicke der ersten Oberflächenbeschichtung DOb1 auf der ersten Oberfläche 3 des Bauteils 1. Ebenso ist eine Schichtdicke der zweiten Oberflächenbeschichtung entlang der Kerbflächen C kleiner als die Schichtdicke der zweiten Oberflächenbeschichtung DOb2 auf der zweiten Oberfläche 4 des Bauteils 1. Die Schichtdicken der ersten und zweiten Oberflächenbeschichtung entlang der Kerbflächen B, C werden senkrecht zu den Kerbflächen 7 bestimmt.Again, not only does an area of the base body 1 sink during the notching process, but also the first surface coating 5 and the second surface coating 6 located thereon. It is also possible here that the notching causes the layer thickness of the first surface coating D Ob1 , which is perpendicular to the first surface 3 of the component 1 is determined, as well as the layer thickness of the second surface coating D Ob2 , which is determined perpendicular to the second surface 4 of the component 1. The result is that a layer thickness of the first surface coating along the notched areas B is smaller than the layer thickness of the first surface coating D Ob1 on the first surface 3 of the component 1. Likewise, a layer thickness of the second surface coating along the notched areas C is smaller than the layer thickness of the second surface coating D Ob2 on the second surface 4 of the component 1. The layer thicknesses of the first and second surface coating along the notched surfaces B, C are determined perpendicular to the notched surfaces 7.

Auch gemäß dem in Figur 2 veranschaulichten Verfahren wird ein Bauteil 1 mit hoher Funktionalität und chemischer und mechanischer Stabilität erhalten, das eine Nachversiegelung bzw. Nacharbeitung der Schnittbereiche nach dem Trennvorgang überflüssig macht.Also according to the figure 2 illustrated method, a component 1 with high functionality and chemical and mechanical stability is obtained, which makes post-sealing or post-processing of the cut areas after the cutting process superfluous.

Die vorhergehende Beschreibung der vorliegenden Erfindung dient nur zu illustrativen Zwecken und nicht zum Zwecke der Beschränkung der Erfindung. Im Rahmen der Erfindung sind verschiedene Änderungen und Modifikationen möglich, ohne den Umfang der Erfindung, wie durch die Ansprüche definiert, zu verlassen.The foregoing description of the present invention is for illustrative purposes only and not for the purpose of limiting the invention. Various changes and modifications are possible within the scope of the invention without departing from the scope of the invention as defined by the claims.

Bezugszeichenliste:Reference list:

11
Bauteilcomponent
22
Grundkörper des Bauteilsbody of the part
33
erste Oberfläche des Bauteilsfirst surface of the component
44
zweite Oberfläche des Bauteilssecond surface of the component
55
erste Oberflächenbeschichtungfirst surface coating
66
zweite Oberflächenbeschichtungsecond surface coating
77
Kerbflächenotch surface
88th
Einkerbungnotch
99
freiliegende Oberfläche des Grundkörpersexposed surface of the base body
1010
Schnittwerkzeugcutting tool
1111
Stanzlochpunch hole
1212
Einkerbungnotch
BB
Schichtdicke der ersten Oberflächenbeschichtung entlang der KerbflächenLayer thickness of the first surface coating along the notched surfaces
CC
Schichtdicke der zweiten Oberflächenbeschichtung entlang der KerbflächenLayer thickness of the second surface coating along the notched surfaces
DGDG
Dicke des Grundkörpersthickness of the body
DOb1DOb1
Dicke der ersten Oberflächenbeschichtung auf der ersten OberflächeThickness of the first surface coating on the first surface
DOb2DOb2
Dicke der ersten Oberflächenbeschichtung auf der ersten OberflächeThickness of the first surface coating on the first surface
KK
Kerbrichtungnotch direction

Claims (11)

  1. Method for machining and/or producing a component (1), said method comprising the following steps:
    providing a component (1), or a semi-finished product, which has a main body (2) having a first surface (3) and a first surface coating (5) provided on the first surface (3), wherein the component (1), or the semi-finished product, on a second surface (4) opposite the first surface (3) has a second surface coating (6);
    notching the component (1), or the semi-finished product, on the first surface (3) coated with the first surface coating (5) and on the second surface (4) coated with the second surface coating (6), wherein at least part of the first surface coating (5) being notched in the process is preserved along notch faces (7); wherein
    the component (1), or the semi-finished product, is severed, perforated or trimmed along the notch (8),
    characterized in that
    the notching on the first surface (3) coated with the first surface coating (5) and on the second surface (4) coated with the second surface coating (6) is carried out to a depth of 10 to 40% of the thickness of the main body DG, wherein
    the first and the second surface coating (5, 6) comprise at least one zinc layer.
  2. Method according to Claim 1, characterized in that the severing, perforating or trimming of the component (1), or of the semi-finished product, is carried out while using a mechanical cutting method.
  3. Method according to one of the preceding claims, characterized in that the notching is performed symmetrically in the notching direction.
  4. Method according to one of the preceding claims, characterized in that the notching is carried out by means of embossing, roller stamping, rolling or knurling.
  5. Method according to one of the preceding claims, characterized in that the notching is carried out symmetrically on the first surface (3) coated with the first surface coating (5) and on the second surface (4) coated with the second surface coating (6) .
  6. Method according to one of the preceding claims, characterized in that a thickness of the main body DG is at most 3 mm, in particular 0.5 to 2.5 mm.
  7. Method according to one of the preceding claims, characterized in that a layer thickness of the first surface coating DOb1 and/or a layer thickness of the second surface coating DOb2 is at most 20 µm, in particular at most 15 µm.
  8. Method according to one of the preceding claims, characterized in that a layer thickness of the first surface coating along the notch faces (B) is at least 20%, in particular at least 30%, of the layer thickness of the first surface coating on the first surface of the component DOb1, or of the semi-finished product, and/or in that a layer thickness of the second surface coating along the notch faces (C) is at least 20%, in particular at least 30%, of the layer thickness of the second surface coating on the second surface of the component DOb2, or of the semi-finished product.
  9. Method according to one of the preceding claims, characterized in that the layer thickness of the first surface coating along the notch faces (B), and/or the layer thickness of the second surface coating along the notch faces (C), describe/describes a gradient.
  10. Method according to one of the preceding claims, characterized in that the notching of the component (1), or of the semi-finished product, on the first surface (3) coated with the first surface coating (5) and/or on the second surface (4) coated with the second surface coating (6) is carried out in the same method step as the severing, perforating or trimming of the component (1), or of the semi-finished product, along the notch (8).
  11. Component, comprising a main body (2) having a first surface (3) and a first surface coating (5) provided on the first surface (3);
    wherein the component (1) on a second surface (4) opposite the first surface (3) has a second surface coating (6);
    wherein the component (1) on the first surface (3) coated with the first surface coating (5) and on the second surface (4) coated with the second surface coating (6) is notched to a depth of 10 to 40% of the thickness of the main body DG, and at least part of the notched first surface coating (5) is preserved along notch faces (7),
    characterized in that the notch faces (C) are covered by the first surface coating (5) by at least 40%, in particular at least 70%, wherein the first and the second surface coating (5, 6) comprise at least one zinc layer.
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US20180333761A1 (en) 2018-11-22
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US11247257B2 (en) 2022-02-15
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