EP1170760A1 - Method of producing magnetic cores from plates - Google Patents

Method of producing magnetic cores from plates Download PDF

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Publication number
EP1170760A1
EP1170760A1 EP01115529A EP01115529A EP1170760A1 EP 1170760 A1 EP1170760 A1 EP 1170760A1 EP 01115529 A EP01115529 A EP 01115529A EP 01115529 A EP01115529 A EP 01115529A EP 1170760 A1 EP1170760 A1 EP 1170760A1
Authority
EP
European Patent Office
Prior art keywords
slats
solid core
lamellae
sheet metal
assembled
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01115529A
Other languages
German (de)
French (fr)
Other versions
EP1170760B1 (en
Inventor
Eberhard Frölich
Siegfried Jauss
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.)
FROELICH, EBERHARD
JAUSS, SIEGFRIED
Original Assignee
Kienle and Spiess Stanz und Druckgiesswerk GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kienle and Spiess Stanz und Druckgiesswerk GmbH filed Critical Kienle and Spiess Stanz und Druckgiesswerk GmbH
Publication of EP1170760A1 publication Critical patent/EP1170760A1/en
Application granted granted Critical
Publication of EP1170760B1 publication Critical patent/EP1170760B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206Manufacturing of magnetic cores by mechanical means
    • H01F41/0233Manufacturing of magnetic circuits made from sheets
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/24Magnetic cores
    • H01F27/245Magnetic cores made from sheets, e.g. grain-oriented
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods of surface bonding and/or assembly therefor
    • Y10T156/1052Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062Prior to assembly
    • Y10T156/1067Continuous longitudinal slitting
    • Y10T156/1069Bonding face to face of laminae cut from single sheet
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49009Dynamoelectric machine
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49009Dynamoelectric machine
    • Y10T29/49012Rotor
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/4902Electromagnet, transformer or inductor
    • Y10T29/49075Electromagnet, transformer or inductor including permanent magnet or core
    • Y10T29/49078Laminated
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/53Means to assemble or disassemble
    • Y10T29/5313Means to assemble electrical device
    • Y10T29/53143Motor or generator
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/53Means to assemble or disassemble
    • Y10T29/5313Means to assemble electrical device
    • Y10T29/5317Laminated device

Definitions

  • the invention relates to a method for producing solid cores from slats according to the preamble of claim 1.
  • the invention has for its object the generic method so that the sheet metal strip when removing the Slats for the solid core can be used optimally.
  • the sheet metal strip is in its First separated in the longitudinal direction in at least two metal sheets. These sheet metal sheets are then successively transversely to the longitudinal direction the individual slats separated. With the invention The process is therefore 100 percent material utilization possible.
  • a Sheet metal strip 1 (Fig. 1) slats 2 separated, from which a solid core 3 is produced in the form of a core package 3 (FIG. 5). He has approximately cylindrical shape. To reach them are the individual Slats 2 of different widths.
  • the solid core 3 is, for example used as a magnetic core in ignition systems of motor vehicles.
  • the sheet metal strip 1 is first in slotted in its longitudinal direction, whereby individual sheet metal webs 4th are formed (Fig. 1). They are used to manufacture the cylindrical Solid core 3 of different widths.
  • the sheet metal strip 1 is only divided into three sheet metal sheets 4 to 6, for example.
  • the sheet metal strip 1 can also be divided into two or more than three sheet metal sheets become.
  • the sheet metal sheets do not have to be different either Have width, but can also be the same width.
  • the slats 2 are not approximately circular in cross section, but square solid cores formed. In the illustrated and described However, the solid core is approximately cylindrical trained so that it corresponding circular cross-section Has.
  • positive locking means 7 are provided, for example holes or wart-like elevations. After attaching the positive locking means 7, the sheet metal sheets 4 to 6 are vertical separated into their longitudinal direction in the individual slats 2.
  • the sheet metal strip 1 is optimally used. There is almost no waste of material, so that almost 100 percent Utilization of the sheet metal strip 1 is achieved. Thereby the solid core 3 can be manufactured inexpensively.
  • For longitudinal slitting of the sheet metal strip 1 and for separating the slats 2 no structurally complex devices and tools required.
  • For slitting the sheet metal strip 1 in its longitudinal direction can, for example, rotating slitting knives, but also die and stamp.
  • To separate the slats 2 from the strip-shaped sheet metal sheets 4 to 6 can be simple Stamps are used.
  • the solid core 3 is assembled from the slats of different widths and advantageously of the same length 2, the solid core 3 is assembled.
  • Fig. 2 shows a top view the different width slats 2.
  • the cylindrical shape of the Solid core 3 is achieved the more the lower the gradation in the widths of the slats 2.
  • About the positive locking means 7 the superimposed, rectangular slats in the exemplary embodiment 2 positively connected.
  • Are the positive locking means 7 wart-like forms in the lamella 2 then engages the respective upper lamella 2 with their projections 7 in the corresponding Indentations on the back of the neighboring lamella 2 a.
  • the lamellae 2 are in this way in the die-cutting process positively connected.
  • 5a shows such a solid core produced by punching and packaging 3.
  • any form-locking means on the slats 2 but instead put them on top of each other to form a solid core 3 Slats 2 to slide into a tube 8 (Fig. 5b).
  • the inside diameter of the tube 8 corresponds to the outer diameter of the solid core 3.
  • the tube 8 holds the fins 2 of the solid core 3 reliably together.
  • the fins 2 can be glued, for example his. It is also possible to insert the solid core 3 to close the tube 8 at both ends.
  • 5c shows the possibility of the individual slats 2 of the solid core 3 to connect with each other by rivets 9, which the slats 2 enforce.
  • the superimposed lamellae 2 can also according to FIG. 5d be joined together by welding to form the solid core 3.
  • To the Welding can be a laser welding device or a laser unit be used.
  • the slats 2 can also be held together by a wrapping 10 (FIG. 5e) his.
  • the lamellae 2 lying one on top of the other to glue.
  • an adhesive device for Application of the adhesive to the slats 2 provided.
  • a heating unit can be provided to complete the setting process to accelerate.
  • a metal strip 1 to use, on which an adhesive is already applied, which at Room temperature is not adhesive.
  • the lamellae 2 are advantageously used with a joining tool 11 Solid core 3 composed.
  • the joining tool 11 has an advantage four tool parts 12 to 15, each radial with respect to the Solid core are adjustable (Fig. 2). They are in the joining position four tool parts 12 to 15 with bevelled end faces 16, 17 flat against each other.
  • Each tool part 12 to 15 has approximately two End faces 16, 17 lying at right angles to one another, between which there is a concave, part-circular recess 18.
  • the slats 2 of the solid core 3 lie with their in the axial direction of the solid core 3 running edges on the wall of the recording room 19.
  • the joining tool 11 can also advantageously be used as a pressing or embossing tool be formed.
  • Fig. 3 for such a joining tool 11 shows, the lamellae 2 of the solid core 3 lie axially extending longitudinal edges 20 in a starting position of the Tool parts 11 to 15 on the wall of the receiving space 19th on. Between the superimposed slats 2 and the wall 21 of the receiving space 19 remain approximately in cross section triangular spaces 22.
  • the tool parts 12 to 15, the in the embodiment shown in Fig. 3 still distance from each other have to be moved radially inwards.
  • the slats 2 in the edge region of the longitudinal edges 20 so plastic deformed (Fig.
  • the solid core 3 has an optimal cylindrical shape, although it is formed from the rectangular sheet metal lamellae 2.
  • Fig. 3 is the solid line, the inner wall 21 of the tool parts 12 to 15 in the starting position and with a dash-dotted line Line shown in the position after the pressing process.
  • Burr formation Longitudinal edges 20
  • the solid core 3 has excellent Electrical Properties.
  • Fig. 6 shows an enlarged view of one of the slats 2. Die the edges of the lamella provided ridges 25 to 28, which are result from the separation process, are shown enlarged.
  • the ridges 25, 27 and the existing on the two long sides a ridge 26 provided on one narrow side is in the same Direction from lamella 2.
  • the one on the opposite On the other hand, the narrow side of the lamella 2 existing ridge 28 is opposite arranged to the other ridges 25 to 27.
  • Fig. 7 shows in cross section the sheet metal strip 1 or one of its sheet webs 4 to 6.
  • the lamella 2 becomes transverse to the longitudinal direction of the corresponding sheet metal sheet by means of a Stamp 30 separated. Because of this cutting process results the changing punch burr direction shown in Fig. 6.
  • Fig. 8 shows the possibility of the slats 2 from the sheet metal strip 1 in cut out its longitudinal direction with stamps 30.
  • the stamp 30 are between two matrices 29 in the sheet metal strip 1 immersed.
  • the slats 2 are punched out, whose Ridges extend in the same direction.
  • the slats 2 are supported resiliently during this separation process.
  • Fig. 9 shows the position of die 29 and punch 30.
  • the cutting edge 31 of the stamp runs straight and perpendicular to the longitudinal direction sheet metal sheet 4 to 6.
  • the lamella separated from the sheet metal sheet 2 thus has straight narrow sides.
  • the for the solid core 3 slats thus have a top view seen, rectangular shape. In particular, the corners of the slat 2 be without radii due to this manufacturing method.
  • a corresponding tool can be used accordingly designed die 29 and punch 30 are used.
  • 9 shows two punching tools 32 with dashed lines, with those on the longitudinal edges of the respective sheet webs 4 to 6 profiles 33 are spaced apart.
  • the stamp 30 With the stamp 30, the sheet metal sheet 4 to 6 is transverse to it Longitudinal direction in the area of the profiles 33 to form the slats 2 separated.
  • the slats 2 are at least one End, preferably at both ends, with the desired profile provided, which is a rounding in the embodiment.
  • the lamella 2 shows one possibility, first in the respective sheet metal strip 4 to 6, for example, punch a rectangular opening 34, in the Then in the longitudinal direction with the stamp 30, the lamella 2 is separated. As a result, the slats 2 are on their narrow sides with cut-outs, which with assembled solid core 3 form a depression on its two end faces. In these recesses can in the embodiment of FIG. 5d the weld be accommodated. It therefore does not apply to the face, so that easily on the end faces of the solid core 3, for example Magnets can be attached.
  • the slats 2 can be waste can be separated from the metal strip 1.
  • the slats 2 are stacked to the solid core 3.
  • the joining tool 11 is advantageously used.
  • Joining, riveting, welding or bending are appropriate assembly tools intended.
  • the slats 2 are advantageous in Manufacturer of the slats for the solid cores 3 in the described Assembled way and if necessary with the joining tool 11 deburred and / or compressed. But it is also possible that Deliver slats 2 to the customer, who in turn supplies the slats to form the solid core 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Laminated Bodies (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Punching Or Piercing (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Glass Compositions (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

Massivkerne werden beispielsweise als Magnetkerne bei Zündsystemen in Kraftfahrzeugen eingesetzt. Bei dem Verfahren zu ihrer Herstellung werden die Lamellen (2) aus einem Blechband (1) herausgestanzt und zum Massivkern zusammengesetzt. Um das Blechband (1) beim Heraustrennen der Lamellen (2) für den Massivkern optimal nutzen zu können, wird das Blechband (1) in seiner Längsrichtung in wenigstens zwei Blechbahnen (4 bis 6) getrennt, aus denen die Lamellen (2) quer zur Längsrichtung der jeweiligen Blechbahnen (4 bis 6) abgetrennt werden. Mit diesem Verfahren ist eine hundertprozentige Materialausnutzung möglich. <IMAGE>Solid cores are used, for example, as magnetic cores in ignition systems in motor vehicles. In the process for their production, the lamellae (2) are punched out of a sheet metal strip (1) and assembled to form the solid core. In order to be able to use the sheet metal strip (1) optimally when the slats (2) are being removed for the solid core, the sheet metal strip (1) is separated in its longitudinal direction into at least two sheet metal strips (4 to 6), from which the slats (2) cross to Longitudinal direction of the respective sheet metal sheets (4 to 6) are separated. With this process, 100 percent material utilization is possible. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Massivkernen aus Lamellen nach dem Oberbegriff des Anspruches 1.The invention relates to a method for producing solid cores from slats according to the preamble of claim 1.

Es ist bekannt, aus einem Blechband mit einem Folgestanzwerkzeug Lamellen herauszustanzen, die zum Massivkern zusammengefügt werden. Solche Massivkerne werden beispielsweise als Magnetkerne bei Zündsystemen in Kraftfahrzeugen eingesetzt. Die Lamellen werden in einzelnen Stanzschritten aus dem Blechband gestanzt, wobei quer zur Bandlängsrichtung in einer ersten Stanzfolge mit Abstand voneinander erste Lamellen ausgestanzt werden. In einem nachfolgenden Stanzschritt werden in die zwischen den ausgestanzten Lamellen verbleibenden Bandbereiche weitere Lamellen ausgestanzt. Bei diesem Verfahren fällt erheblicher Schrottabfall an, da zwischen den ausgestanzten Lamellen Blechstege stehenbleiben, die nicht mehr verwertet werden können.It is known from a sheet metal strip with a follow-up punch Punch out lamellas that are joined together to form the solid core become. Such solid cores are used, for example, as magnetic cores used in ignition systems in motor vehicles. The slats are stamped from the sheet metal strip in individual stamping steps, whereby transversely to the longitudinal direction of the tape in a first punching sequence at a distance first slats are punched out from each other. In a subsequent one Stamping step are in the between the punched-out slats remaining slats are punched out further slats. With this process, there is considerable scrap waste, because between the punched-out lamellae remain, but not can be used more.

Der Erfindung liegt die Aufgabe zugrunde, das gattungsgemäße Verfahren so auszubilden, daß das Blechband beim Heraustrennen der Lamellen für den Massivkern optimal genutzt werden kann.The invention has for its object the generic method so that the sheet metal strip when removing the Slats for the solid core can be used optimally.

Diese Aufgabe wird beim gattungsgemäßen Verfahren erfindungsgemäß mit den kennzeichnenden Merkmalen des Anspruches 1 gelöst.This object is achieved according to the invention in the generic method solved with the characterizing features of claim 1.

Beim erfindungsgemäßen Verfahren wird das Blechband in seiner Längsrichtung zunächst in wenigstens zwei Blechbahnen getrennt. Aus diesen Blechbahnen werden dann quer zur Längsrichtung nacheinander die einzelnen Lamellen abgetrennt. Mit dem erfindungsgemäßen Verfahren ist somit eine hundertprozentige Materialausnutzung möglich.In the method according to the invention, the sheet metal strip is in its First separated in the longitudinal direction in at least two metal sheets. These sheet metal sheets are then successively transversely to the longitudinal direction the individual slats separated. With the invention The process is therefore 100 percent material utilization possible.

Weitere Merkmale der Erfindung ergeben sich aus den weiteren Ansprüchen, der Beschreibung und den Zeichnungen.Further features of the invention result from the further claims, the description and the drawings.

Die Erfindung wird anhand einiger in den Zeichnungen dargestellter Ausführungsformen näher erläutert. Es zeigen

Fig. 1
in schematischer Darstellung ein Blechband während der Durchführung des erfindungsgemäßen Verfahrens,
Fig. 2
ein Fügewerkzeug zur Herstellung eines Massivkerns,
Fig. 3
in vergrößerter Darstellung einen Teil des Fügewerkzeuges gemäß Fig. 2 in einer Ausgangsstellung,
Fig. 4
einen Teil des Fügewerkzeuges in einer Endstellung,
Fig. 5
verschiedene Ausführungsformen der Verbindung der einzelnen Lamellen zum Massivkern,
Fig. 6
in vergrößerter Darstellung eine Lamelle zur Herstellung des Massivkerns,
Fig. 7
in vergrößerter Darstellung und im Schnitt einen Stempel, der aus dem Blechband die Lamelle gemäß Fig. 6 heraustrennt,
Fig. 8
eine zweite Ausführungsform einer Stanzeinrichtung beim Heraustrennen von Lamellen aus dem Blechband,
Fig. 9
in schematischer Darstellung und in Draufsicht die Matrize und den Stempel gemäß Fig. 7, mit denen eine Lamelle abgetrennt wird,
Fig. 10
in einer Darstellung entsprechend Fig. 9 eine weitere Möglichkeit, aus einem Blechband Lamellen abzutrennen.
The invention is explained in more detail with reference to some embodiments shown in the drawings. Show it
Fig. 1
a schematic representation of a sheet metal strip while performing the method according to the invention,
Fig. 2
a joining tool for producing a solid core,
Fig. 3
2 shows an enlarged view of a part of the joining tool according to FIG. 2 in a starting position,
Fig. 4
part of the joining tool in an end position,
Fig. 5
different embodiments of the connection of the individual slats to the solid core,
Fig. 6
an enlarged view of a lamella for producing the solid core,
Fig. 7
in an enlarged representation and in section, a stamp which separates the lamella according to FIG. 6 from the sheet metal strip,
Fig. 8
2 shows a second embodiment of a punching device when severing lamellae from the sheet metal strip,
Fig. 9
in a schematic representation and in plan view, the die and the punch according to FIG. 7, with which a lamella is separated,
Fig. 10
in a representation corresponding to FIG. 9 a further possibility of separating lamellae from a sheet metal strip.

Mit dem im folgenden beschriebenen Verfahren werden aus einem Blechband 1 (Fig. 1) Lamellen 2 herausgetrennt, aus denen ein Massivkern 3 in Form eines Kernpaketes 3 (Fig. 5) hergestellt wird. Er hat etwa zylindrische Form. Um sie zu erreichen, sind die einzelnen Lamellen 2 unterschiedlich breit. Der Massivkern 3 wird beispielsweise als Magnetkern in Zündsystemen von Kraftfahrzeugen eingesetzt.Using the procedure described below, a Sheet metal strip 1 (Fig. 1) slats 2 separated, from which a solid core 3 is produced in the form of a core package 3 (FIG. 5). He has approximately cylindrical shape. To reach them are the individual Slats 2 of different widths. The solid core 3 is, for example used as a magnetic core in ignition systems of motor vehicles.

Zur Herstellung der Lamellen 2 wird das Blechband 1 zunächst in seiner Längsrichtung geschlitzt, wodurch einzelne Blechbahnen 4 gebildet werden (Fig. 1). Sie sind zur Herstellung des zylindrischen Massivkerns 3 unterschiedlich breit. In Fig. 1 ist das Blechband 1 nur beispielhaft in drei Blechbahnen 4 bis 6 aufgeteilt. Das Blechband 1 kann auch nur in zwei oder auch mehr als drei Blechbahnen aufgeteilt werden. Die Blechbahnen müssen auch nicht unterschiedliche Breite haben, sondern können auch gleich breit sein. In diesem Falle werden aus den Lamellen 2 keine im Querschnitt etwa kreisförmigen, sondern eckige Massivkerne gebildet. Im dargestellten und beschriebenen Ausführungsbeispiel ist allerdings der Massivkern etwa zylindrisch ausgebildet, so daß er entsprechenden kreisförmigen Querschnitt hat.To produce the slats 2, the sheet metal strip 1 is first in slotted in its longitudinal direction, whereby individual sheet metal webs 4th are formed (Fig. 1). They are used to manufacture the cylindrical Solid core 3 of different widths. In Fig. 1, the sheet metal strip 1 is only divided into three sheet metal sheets 4 to 6, for example. The sheet metal strip 1 can also be divided into two or more than three sheet metal sheets become. The sheet metal sheets do not have to be different either Have width, but can also be the same width. In this case the slats 2 are not approximately circular in cross section, but square solid cores formed. In the illustrated and described However, the solid core is approximately cylindrical trained so that it corresponding circular cross-section Has.

Nach der Längsaufteilung der Blechbahn 1 werden in den Blechbahnen 4 bis 6 Formschlußmittel 7 vorgesehen, die beispielsweise Löcher oder warzenartige Erhebungen sein können. Nach dem Anbringen der Formschlußmittel 7 werden die Blechbahnen 4 bis 6 senkrecht zu ihrer Längsrichtung in die einzelnen Lamellen 2 aufgetrennt. After the longitudinal division of the sheet web 1 are in the sheet webs 4 to 6 positive locking means 7 are provided, for example holes or wart-like elevations. After attaching the positive locking means 7, the sheet metal sheets 4 to 6 are vertical separated into their longitudinal direction in the individual slats 2.

Aufgrund dieser Verfahrensweise wird das Blechband 1 optimal ausgenutzt. Es tritt nahezu kein Materialabfall auf, so daß eine fast hundertprozentige Ausnutzung des Blechbandes 1 erreicht wird. Dadurch kann der Massivkern 3 kostengünstig gefertigt werden. Zum Längsschlitzen des Blechbandes 1 und zum Abtrennen der Lamellen 2 sind keine konstruktiv aufwendigen Vorrichtungen und Werkzeuge erforderlich. Zum Schlitzen des Blechbandes 1 in seiner Längsrichtung können beispielsweise rotiernede Schlitzmesser, aber auch Matrize und Stempel, herangezogen werden. Zum Abtrennen der Lamellen 2 aus den streifenförmigen Blechbahnen 4 bis 6 können einfache Stempel eingesetzt werden.Due to this procedure, the sheet metal strip 1 is optimally used. There is almost no waste of material, so that almost 100 percent Utilization of the sheet metal strip 1 is achieved. Thereby the solid core 3 can be manufactured inexpensively. For longitudinal slitting of the sheet metal strip 1 and for separating the slats 2 no structurally complex devices and tools required. For slitting the sheet metal strip 1 in its longitudinal direction can, for example, rotating slitting knives, but also die and stamp. To separate the slats 2 from the strip-shaped sheet metal sheets 4 to 6 can be simple Stamps are used.

Aus den unterschiedlich breiten und vorteilhaft gleich langen Lamellen 2 wird der Massivkern 3 zusammengesetzt. Fig. 2 zeigt in Draufsicht die unterschiedlich breiten Lamellen 2. Die Zylinderform des Massivkerns 3 wird um so mehr erreicht, je geringer die Abstufung in den Breiten der Lamellen 2 ist. Über die Formschlußmittel 7 werden die aufeinander liegenden, im Ausführungsbeispiel rechteckigen Lamellen 2 formschlüssig miteinander verbunden. Sind die Formschlußmittel 7 warzenartige Ausprägungen in der Lamelle 2, dann greift die jeweils obere Lamelle 2 mit ihren Vorsprüngen 7 in die entsprechenden Vertiefungen an der Rückseite der benachbarten Lamelle 2 ein. Die Lamellen 2 werden auf diese Weise im Stanzpaketierverfahren formschlüssig miteinander verbunden. Fig. 5a zeigt einen solchen, durch Stanzpaketieren hergestellten Massivkern 3.From the slats of different widths and advantageously of the same length 2, the solid core 3 is assembled. Fig. 2 shows a top view the different width slats 2. The cylindrical shape of the Solid core 3 is achieved the more the lower the gradation in the widths of the slats 2. About the positive locking means 7 the superimposed, rectangular slats in the exemplary embodiment 2 positively connected. Are the positive locking means 7 wart-like forms in the lamella 2, then engages the respective upper lamella 2 with their projections 7 in the corresponding Indentations on the back of the neighboring lamella 2 a. The lamellae 2 are in this way in the die-cutting process positively connected. 5a shows such a solid core produced by punching and packaging 3.

Es ist auch möglich, an den Lamellen 2 keine Formschlußmittel vorzusehen, sondern die zu einem Massivkern 3 aufeinandergesetzten Lamellen 2 in ein Rohr 8 (Fig. 5b) zu schieben. Der Innendurchmesser des Rohres 8 entspricht dem Außendurchmesser des Massivkerns 3. Das Rohr 8 hält die Lamellen 2 des Massivkerns 3 zuverlässig zusammen. Im Rohr 8 können die Lamellen 2 beispielsweise eingeklebt sein. Auch ist es möglich, nach dem Einschieben des Massivkerns 3 das Rohr 8 an beiden Enden zu verschließen. It is also possible not to provide any form-locking means on the slats 2, but instead put them on top of each other to form a solid core 3 Slats 2 to slide into a tube 8 (Fig. 5b). The inside diameter of the tube 8 corresponds to the outer diameter of the solid core 3. The tube 8 holds the fins 2 of the solid core 3 reliably together. In the tube 8, the fins 2 can be glued, for example his. It is also possible to insert the solid core 3 to close the tube 8 at both ends.

Fig. 5c zeigt die Möglichkeit, die einzelnen Lamellen 2 des Massivkerns 3 durch Nieten 9 miteinander zu verbinden, welche die Lamellen 2 durchsetzen. In diesem Fall sind die Lamellen 2 mit Öffnungen für die Nieten 9 versehen.5c shows the possibility of the individual slats 2 of the solid core 3 to connect with each other by rivets 9, which the slats 2 enforce. In this case, the slats 2 with openings provided for the rivets 9.

Die aufeinander liegenden Lamellen 2 können gemäß Fig. 5d auch durch Schweißen zum Massivkern 3 zusammengefügt sein. Zum Schweißen kann eine Laserschweißvorrichtung oder ein Laseraggregat herangezogen werden.The superimposed lamellae 2 can also according to FIG. 5d be joined together by welding to form the solid core 3. To the Welding can be a laser welding device or a laser unit be used.

Die Lamellen 2 können auch durch eine Umwicklung 10 (Fig. 5e) zusammengehalten sein.The slats 2 can also be held together by a wrapping 10 (FIG. 5e) his.

Es ist ferner möglich, die aufeinander liegenden Lamellen 2 miteinander zu verkleben. In diesem Falle ist eine Klebevorrichtung zum Auftrag des Klebemittels auf die Lamellen 2 vorgesehen. Gegebenenfalls kann noch ein Anwärmaggregat vorgesehen sein, um den Abbindevorgang zu beschleunigen. Es ist auch möglich, ein Blechband 1 zu verwenden, auf das ein Kleber schon aufgebracht ist, der bei Raumtemperatur nicht klebefähig ist.It is also possible for the lamellae 2 lying one on top of the other to glue. In this case, an adhesive device for Application of the adhesive to the slats 2 provided. Possibly a heating unit can be provided to complete the setting process to accelerate. It is also possible to use a metal strip 1 to use, on which an adhesive is already applied, which at Room temperature is not adhesive.

In den Fällen, in denen die Lamellen 2 in das umhüllende Bauteil 8 gesteckt oder zusammengeschweißt oder umwickelt oder verklebt werden, sind Formschlußmittel bzw. Öffnungen in den Lamellen 2 nicht erforderlich. Dann muß das Blechband 1 lediglich in seiner Längsrichtung geschlitzt und aus den entsprechenden Blechbahnen die Lamellen gestanzt werden.In the cases in which the slats 2 are in the enveloping component 8 plugged in or welded together or wrapped or glued are positive locking means or openings in the slats 2 not mandatory. Then the sheet metal strip 1 only needs to be in its Slotted lengthways and from the corresponding sheet metal the slats are punched.

Die Lamellen 2 werden vorteilhaft mit einem Fügewerkzeug 11 zum Massivkern 3 zusammengesetzt. Das Fügewerkzeug 11 hat vorteilhaft vier Werkzeugteile 12 bis 15, die jeweils radial in bezug auf den Massivkern verstellbar sind (Fig. 2). In der Fügestellung liegen die vier Werkzeugteile 12 bis 15 mit abgeschrägten Stirnseiten 16, 17 flächig aneinander. Jedes Werkzeugteil 12 bis 15 hat zwei etwa rechtwinklig zueinander liegende Stirnseiten 16, 17, zwischen denen eine konkave, teilkreisförmige Vertiefung 18 liegt. Liegen die Werkzeugteile 12 bis 15 mit ihren Stirnseiten 16, 17 aneinander, bilden die Vertiefungen 18 einen zylindrischen Aufnahmeraum 19 für den Massivkern 3. Die Lamellen 2 des Massivkerns 3 liegen mit ihren in Achsrichtung des Massivkerns 3 verlaufenden Rändern an der Wandung des Aufnahmeraumes 19 an.The lamellae 2 are advantageously used with a joining tool 11 Solid core 3 composed. The joining tool 11 has an advantage four tool parts 12 to 15, each radial with respect to the Solid core are adjustable (Fig. 2). They are in the joining position four tool parts 12 to 15 with bevelled end faces 16, 17 flat against each other. Each tool part 12 to 15 has approximately two End faces 16, 17 lying at right angles to one another, between which there is a concave, part-circular recess 18. Are the tool parts lying 12 to 15 with their end faces 16, 17 together, form the Recesses 18 a cylindrical receiving space 19 for the solid core 3. The slats 2 of the solid core 3 lie with their in the axial direction of the solid core 3 running edges on the wall of the recording room 19.

Vorteilhaft kann das Fügewerkzeug 11 auch als Preß- bzw. Prägewerkzeug ausgebildet werden. Wie Fig. 3 für ein solches Fügewerkzeug 11 zeigt, liegen die Lamellen 2 des Massivkerns 3 mit ihren axial verlaufenden Längsrändern 20 in einer Ausgangsstellung der Werkzeugteile 11 bis 15 an der Wandung des Aufnahmeraumes 19 an. Zwischen den aufeinander liegenden Lamellen 2 und der Wandung 21 des Aufnahmeraumes 19 verbleiben im Querschnitt etwa dreieckförmige Zwischenräume 22. Die Werkzeugteile 12 bis 15, die in der in Fig. 3 dargestellten Ausführungsform noch Abstand voneinander haben, werden radial nach innen verschoben. Hierbei werden die Lamellen 2 im Randbereich der Längsränder 20 derart plastisch verformt (Fig. 4), daß die Lamellen 2 im Bereich der Längsränder 20 abgeflacht werden, indem ein Teil des Randbereiches der Lamellen 2 in die Zwischenräume 22 verdrängt wird. Diese durch plastische Verformung entstehenden verdrängten Bereiche 23 sind in Fig. 4 dargestellt. Aufgrund der verformten Bereiche 23 werden die Zwischenräume 22 verkleinert. Da außerdem die Lamellen 2 durch den Preßvorgang im Bereich ihrer Längsränder 20 abgeflacht werden, hat der Massivkern 3 eine optimale zylindrische Außenform.The joining tool 11 can also advantageously be used as a pressing or embossing tool be formed. As Fig. 3 for such a joining tool 11 shows, the lamellae 2 of the solid core 3 lie axially extending longitudinal edges 20 in a starting position of the Tool parts 11 to 15 on the wall of the receiving space 19th on. Between the superimposed slats 2 and the wall 21 of the receiving space 19 remain approximately in cross section triangular spaces 22. The tool parts 12 to 15, the in the embodiment shown in Fig. 3 still distance from each other have to be moved radially inwards. Here are the slats 2 in the edge region of the longitudinal edges 20 so plastic deformed (Fig. 4) that the slats 2 in the region of the longitudinal edges 20th be flattened by part of the edge area of the slats 2 is displaced into the spaces 22. This through plastic deformation resulting displaced areas 23 are shown in FIG. 4. Because of the deformed areas 23, the spaces 22 reduced. Since also the slats 2 through the pressing process are flattened in the area of their longitudinal edges 20, the Solid core 3 an optimal cylindrical outer shape.

Durch Abstimmung der Dicke der Lamellen 2 kann erreicht werden, daß die Zwischenräume 22 nur so groß sind, daß die verformten Bereiche 23 der Lamellen 2 die Zwischenräume 22 vollständig ausfüllen. In diesem Falle hat der Massivkern 3 eine optimale Zylinderform, obwohl er aus den rechteckigen Blechlamellen 2 gebildet wird. By coordinating the thickness of the lamellae 2, that the gaps 22 are only so large that the deformed areas 23 of the slats 2 completely fill the spaces 22. In this case, the solid core 3 has an optimal cylindrical shape, although it is formed from the rectangular sheet metal lamellae 2.

In Fig. 3 ist mit der ausgezogenen Linie die Innenwand 21 der Werkzeugteile 12 bis 15 in der Ausgangsstellung und mit einer strichpunktierten Linie in der Lage nach dem Preßvorgang dargestellt. Nach dem Pressen sind die Lamellen 2 anstelle ihrer Längsränder 20 mit gekrümmten Flächen 24 versehen, die in der Mantelfläche des fertigen Massivkerns 3 liegen. Aufgrund des beschriebenen Preßvorganges wird das Füllvolumen des Massivkerns, bezogen auf den Kreisquerschnitt, im Vergleich zu einem nicht verpreßten Massivkern 3 erhöht. Außerdem wird die Gratbildung (Längsränder 20) beseitigt. Aufgrund der Erhöhung des Füllvolumens hat der Massivkern 3 hervorragende elektrische Eigenschaften.In Fig. 3 is the solid line, the inner wall 21 of the tool parts 12 to 15 in the starting position and with a dash-dotted line Line shown in the position after the pressing process. To the lamellae 2 instead of their longitudinal edges 20 with the pressing curved surfaces 24 provided in the outer surface of the finished Solid core 3 lie. Because of the pressing process described the filling volume of the solid core, based on the circular cross-section, compared to a non-pressed solid core 3 increased. Burr formation (longitudinal edges 20) is also eliminated. Due to the increase in the filling volume, the solid core 3 has excellent Electrical Properties.

Fig. 6 zeigt in vergrößerter Darstellung eine der Lamellen 2. Die an den Rändern der Lamelle vorgesehenen Grate 25 bis 28, die sich aufgrund des Trennvorganges ergeben, sind vergrößert dargestellt. Die an den beiden Längsseiten vorhandenen Grate 25, 27 sowie der eine an der einen Schmalseite vorgesehene Grat 26 stehen in gleicher Richtung von der Lamelle 2 ab. Der an der gegenüberliegenden Schmalseite der Lamelle 2 vorhandene Grat 28 hingegen ist entgegengesetzt zu den anderen Graten 25 bis 27 angeordnet.Fig. 6 shows an enlarged view of one of the slats 2. Die the edges of the lamella provided ridges 25 to 28, which are result from the separation process, are shown enlarged. The ridges 25, 27 and the existing on the two long sides a ridge 26 provided on one narrow side is in the same Direction from lamella 2. The one on the opposite On the other hand, the narrow side of the lamella 2 existing ridge 28 is opposite arranged to the other ridges 25 to 27.

Fig. 7 zeigt im Querschnitt das Blechband 1 bzw. eines seiner Blechbahnen 4 bis 6. Im Bereich einer Matrize 29 wird die Lamelle 2 quer zur Längsrichtung der entsprechenden Blechbahn mittels eines Stempels 30 abgetrennt. Aufgrund dieses Schneidprozesses ergibt sich die in Fig. 6 dargestellte wechselnde Stanzgratrichtung.Fig. 7 shows in cross section the sheet metal strip 1 or one of its sheet webs 4 to 6. In the area of a die 29, the lamella 2 becomes transverse to the longitudinal direction of the corresponding sheet metal sheet by means of a Stamp 30 separated. Because of this cutting process results the changing punch burr direction shown in Fig. 6.

Fig. 8 zeigt die Möglichkeit, die Lamellen 2 aus dem Blechband 1 in dessen Längsrichtung mit Stempeln 30 herauszutrennen. Die Stempel 30 werden zwischen jeweils zwei Matrizen 29 in das Blechband 1 eingetaucht. Hierbei werden die Lamellen 2 herausgestanzt, deren Grate sich in gleicher Richtung erstrecken. Die Lamellen 2 werden während dieses Abtrennvorganges federnd abgestützt. Fig. 8 shows the possibility of the slats 2 from the sheet metal strip 1 in cut out its longitudinal direction with stamps 30. The stamp 30 are between two matrices 29 in the sheet metal strip 1 immersed. Here, the slats 2 are punched out, whose Ridges extend in the same direction. The slats 2 are supported resiliently during this separation process.

Fig. 9 zeigt die Lage von Matrize 29 und Stempel 30. Die Schneidkante 31 des Stempels verläuft gerade und senkrecht zur Längsrichtung der Blechbahn 4 bis 6. Die aus der Blechbahn abgetrennte Lamelle 2 weist dadurch gerade verlaufende Schmalseiten auf. Die für den Massivkern 3 verwendeten Lamellen haben somit, in Draufsicht gesehen, Rechteckform. Insbesondere können die Ecken der Lamelle 2 aufgrund dieser Herstellungsweise ohne Radien sein.Fig. 9 shows the position of die 29 and punch 30. The cutting edge 31 of the stamp runs straight and perpendicular to the longitudinal direction sheet metal sheet 4 to 6. The lamella separated from the sheet metal sheet 2 thus has straight narrow sides. The for the solid core 3 slats thus have a top view seen, rectangular shape. In particular, the corners of the slat 2 be without radii due to this manufacturing method.

Sind im Eckbereich der Lamellen 2 jedoch Radien oder andere Profilierungen gewünscht, kann ein entsprechendes Werkzeug mit entsprechend gestalteter Matrize 29 und Stempel 30 eingesetzt werden. In Fig. 9 sind mit gestrichelten Linien zwei Stanzwerkzeuge 32 dargestellt, mit denen an den Längsrändern der jeweiligen Blechbahnen 4 bis 6 in Abständen voneinander Profilierungen 33 angebracht werden. Mit dem Stempel 30 wird die Blechbahn 4 bis 6 quer zu deren Längsrichtung im Bereich der Profilierungen 33 zur Bildung der Lamellen 2 abgetrennt. Dadurch sind die Lamellen 2 wenigstens an einem Ende, vorzugsweise an beiden Enden, mit der gewünschten Profilierung versehen, die im Ausführungsbeispiel eine Abrundung ist.However, there are radii or other profiles in the corner area of the slats 2 desired, a corresponding tool can be used accordingly designed die 29 and punch 30 are used. 9 shows two punching tools 32 with dashed lines, with those on the longitudinal edges of the respective sheet webs 4 to 6 profiles 33 are spaced apart. With the stamp 30, the sheet metal sheet 4 to 6 is transverse to it Longitudinal direction in the area of the profiles 33 to form the slats 2 separated. As a result, the slats 2 are at least one End, preferably at both ends, with the desired profile provided, which is a rounding in the embodiment.

Fig. 10 zeigt eine Möglichkeit, zunächst im jeweiligen Blechband 4 bis 6 eine beispielsweise rechteckige Öffnung 34 zu stanzen, in deren Längsrichtung anschließend mit dem Stempel 30 die Lamelle 2 abgetrennt wird. Dadurch sind die Lamellen 2 an ihren Schmalseiten mit Aussparungen versehen, die bei zusammengesetztem Massivkern 3 eine Vertiefung an dessen beiden Stirnseiten bilden. In diesen Vertiefungen kann bei der Ausführungsform gemäß Fig. 5d die Schweißnaht untergebracht werden. Sie trägt somit stirnseitig nicht auf, so daß an den Stirnseiten des Massivkerns 3 problemlos beispielsweise Magnete befestigt werden können.10 shows one possibility, first in the respective sheet metal strip 4 to 6, for example, punch a rectangular opening 34, in the Then in the longitudinal direction with the stamp 30, the lamella 2 is separated. As a result, the slats 2 are on their narrow sides with cut-outs, which with assembled solid core 3 form a depression on its two end faces. In these recesses can in the embodiment of FIG. 5d the weld be accommodated. It therefore does not apply to the face, so that easily on the end faces of the solid core 3, for example Magnets can be attached.

Mit dem beschriebenen Verfahren können die Lamellen 2 abfallos aus dem Blechband 1 herausgetrennt werden. Die Lamellen 2 werden zum Massivkern 3 gestapelt. Zum Paketieren und/oder Entgraten und/oder Nachprägen wird vorteilhaft das Fügewerkzeug 11 verwendet. Zum Zusammensetzen der Lamellen 2 durch Stanzpaketieren, Fügen, Nieten, Schweißen oder Umwinkeln sind entsprechende Montagewerkzeuge vorgesehen. Die Lamellen 2 werden vorteilhaft beim Hersteller der Lamellen zu den Massivkernen 3 in der beschriebenen Weise zusammengesetzt und gegebenenfalls mit dem Fügewerkzeug 11 entgratet und/oder verdichtet. Es ist aber auch möglich, die Lamellen 2 dem Kunden auszuliefern, der seinerseits die Lamellen zum Massivkern 3 zusammensetzt.With the described method, the slats 2 can be waste can be separated from the metal strip 1. The slats 2 are stacked to the solid core 3. For packaging and / or deburring and / or post-stamping, the joining tool 11 is advantageously used. To assemble the slats 2 by punching packages, Joining, riveting, welding or bending are appropriate assembly tools intended. The slats 2 are advantageous in Manufacturer of the slats for the solid cores 3 in the described Assembled way and if necessary with the joining tool 11 deburred and / or compressed. But it is also possible that Deliver slats 2 to the customer, who in turn supplies the slats to form the solid core 3.

Claims (17)

Verfahren zur Herstellung von Massivkernen aus Lamellen, die aus einem Blechband herausgetrennt und zum Massivkern zusammengesetzt werden,
dadurch gekennzeichnet, daß das Blechband (1) in seiner Längsrichtung in wenigstens zwei Blechbahnen (4 bis 6) getrennt wird, aus denen die Lamellen (2) quer zur Längsrichtung der jeweiligen Blechbahn (4 bis 6) abgetrennt werden.
Process for the production of solid cores from lamellae, which are separated from a sheet metal strip and put together to form the solid core,
characterized in that the sheet metal strip (1) is separated in its longitudinal direction into at least two sheet metal sheets (4 to 6), from which the lamellae (2) are cut off transversely to the longitudinal direction of the respective sheet metal sheet (4 to 6).
Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß die Blechbahnen (4 bis 6) unterschiedliche Breite haben.
Method according to claim 1,
characterized in that the sheet webs (4 to 6) have different widths.
Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die Blechbahnen (4 bis 6) vor dem Abtrennen der Lamellen (2) mit Formschlußmitteln (7), vorzugsweise warzenartigen Erhöhungen, versehen werden.
The method of claim 1 or 2,
characterized in that the sheet metal webs (4 to 6) are provided with positive locking means (7), preferably wart-like elevations, before the lamellae (2) are separated.
Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß die Lamellen (2) durch Stanzpaketieren zum Massivkern (3) zusammengesetzt werden.
Method according to one of claims 1 to 3,
characterized in that the lamellae (2) are put together to form a solid core (3) by punching.
Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß die Lamellen (2) in einer rohrförmigen Aufnahme (8) zum Massivkern (3) zusammengesetzt werden.
Method according to one of claims 1 to 3,
characterized in that the lamellae (2) are assembled in a tubular receptacle (8) to form the solid core (3).
Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß die Lamellen (2) durch Nieten zum Massivkern (3) zusammengesetzt werden.
Method according to one of claims 1 to 3,
characterized in that the lamellae (2) are assembled by rivets to form the solid core (3).
Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß die Lamellen (2) durch Schweißen zum Massivkern (3) zusammengesetzt werden.
Method according to one of claims 1 to 3,
characterized in that the lamellae (2) are assembled by welding to form the solid core (3).
Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß die Lamellen (2) durch Umwickeln zum Massivkern (3) zusammengesetzt werden.
Method according to one of claims 1 to 3,
characterized in that the slats (2) are assembled by wrapping them around the solid core (3).
Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß die Lamellen (2) durch Kleben zum Massivkern (3) zusammengesetzt werden.
Method according to one of claims 1 to 3,
characterized in that the slats (2) are assembled by gluing to form the solid core (3).
Verfahren nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, daß die Lamellen (2) mittels eines Fügewerkzeuges (11) zum Massivkern (3) zusammengesetzt werden.
Method according to one of claims 1 to 9,
characterized in that the lamellae (2) are assembled to form the solid core (3) by means of a joining tool (11).
Verfahren nach Anspruch 10,
dadurch gekennzeichnet, daß das Fügewerkzeug (11) wenigstens zwei, vorteilhaft gegen die Lamellen (2) bewegbare, vorzugsweise unabhängig voneinander bewegbare Werkzeugteile (12 bis 15) aufweist, die einen Aufnahrneraum (19) für die Lamellen (2) begrenzen.
A method according to claim 10,
characterized in that the joining tool (11) has at least two tool parts (12 to 15) which can advantageously be moved against the slats (2) and preferably can be moved independently of one another and which delimit a receiving space (19) for the slats (2).
Verfahren, insbesondere nach einem der Ansprüche 1 bis 11,
dadurch gekennzeichnet, daß die Lamellen (2) nach dem Zusammensetzen zum Massivkern (3) entgratet werden.
Method, in particular according to one of claims 1 to 11,
characterized in that the slats (2) are deburred after assembly to form the solid core (3).
Verfahren nach Anspruch 12,
dadurch gekennzeichnet, daß zum Entgraten die Werkzeugteile (12 bis 15) des Fügewerkzeuges (11) gegen die Lamellen (2) so weit bewegt werden, daß die Grate (25 bis 28) der Lamellen (2) durch plastsiche Verformung weggedrückt werden.
Method according to claim 12,
characterized in that for deburring the tool parts (12 to 15) of the joining tool (11) are moved so far against the fins (2) that the burrs (25 to 28) of the fins (2) are pushed away by plastic deformation.
Verfahren, insbesondere nach einem der Ansprüche 1 bis 13,
dadurch gekennzeichnet, daß die Lamellen (2) nach dem Zusammensetzen zum Massivkern (3) im Bereich ihrer Längsränder (20) plastisch verformt werden.
Method, in particular according to one of claims 1 to 13,
characterized in that the slats (2) are plastically deformed in the region of their longitudinal edges (20) after they have been assembled to form the solid core (3).
Verfahren nach Anspruch 14,
dadurch gekennzeichnet, daß die Lamellen (2) so plastisch verformt werden, daß die Außenseiten (24) der verformten Bereiche in einer gemeinsamen Zylindermantelfläche liegen.
The method of claim 14
characterized in that the fins (2) are plastically deformed in such a way that the outer sides (24) of the deformed areas lie in a common cylinder surface.
Verfahren nach Anspruch 14 oder 15,
dadurch gekennzeichnet, daß die Werkzeugteile (12 bis 15) des Fügewerkzeuges (11) zur Verformung gegen die Lamellen (2) bewegt werden.
A method according to claim 14 or 15,
characterized in that the tool parts (12 to 15) of the joining tool (11) are moved against the lamellae (2) for deformation.
Verfahren nach Anspruch einem der Ansprüche 14 bis 16,
dadurch gekennzeichnet, daß beim Verformen Bereiche (23) der Lamellen (2) in Zwischenräume (22) zwischen den Lamellen (2) und der Wandung des Aufnahmeraumes (19) des Fügewerkzeuges (11) verdrängt werden, und daß vorzugsweise die verdrängten Bereiche (23) die Zwischenräume (22) nahezu vollständig ausfüllen.
Method according to one of claims 14 to 16,
characterized in that regions (23) of the lamellae (2) are displaced into spaces (22) between the lamellae (2) and the wall of the receiving space (19) of the joining tool (11), and that the displaced regions (23 ) almost completely fill the spaces (22).
EP01115529A 2000-07-05 2001-06-28 Method of producing magnetic cores from plates Expired - Lifetime EP1170760B1 (en)

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DE10032506A DE10032506A1 (en) 2000-07-05 2000-07-05 Making dense cores from lamellas involves dividing sheet strip lengthwise into at least two strip lengths, separating lamellas transversely to longitudinal direction of each strip length
DE10032506 2000-07-05

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DE50104459D1 (en) 2004-12-16
HU224512B1 (en) 2005-10-28
ATE282243T1 (en) 2004-11-15
HUP0102410A3 (en) 2002-06-28
US7082675B2 (en) 2006-08-01
PL348449A1 (en) 2002-01-14
PL199034B1 (en) 2008-08-29
US20020003025A1 (en) 2002-01-10
HUP0102410A2 (en) 2002-04-29
DE10032506A1 (en) 2002-01-17

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