EP0114976B1 - Contact pin and process and device for its manufacture - Google Patents

Contact pin and process and device for its manufacture Download PDF

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Publication number
EP0114976B1
EP0114976B1 EP83111986A EP83111986A EP0114976B1 EP 0114976 B1 EP0114976 B1 EP 0114976B1 EP 83111986 A EP83111986 A EP 83111986A EP 83111986 A EP83111986 A EP 83111986A EP 0114976 B1 EP0114976 B1 EP 0114976B1
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EP
European Patent Office
Prior art keywords
upsetting
curved
contour
side faces
edge
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Expired
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EP83111986A
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German (de)
French (fr)
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EP0114976A3 (en
EP0114976A2 (en
Inventor
Rudi Kolb
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Unimet GmbH
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Unimet GmbH
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Application filed by Unimet GmbH filed Critical Unimet GmbH
Priority to AT83111986T priority Critical patent/ATE35597T1/en
Publication of EP0114976A2 publication Critical patent/EP0114976A2/en
Publication of EP0114976A3 publication Critical patent/EP0114976A3/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/04—Pins or blades for co-operation with sockets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending

Definitions

  • the invention relates to a contact pin with a cylindrical shaft and a tapered end, which is composed of at least two side surfaces and two curved top and bottom surfaces and of which the two side surfaces are arranged at right angles to an axial plane of the pin and in mirror image to the axial plane perpendicular thereto are.
  • Such a contact pin is known from DE-A-1 589 820.
  • the two side surfaces are flat and meet in a wedge shape on a front edge.
  • the top surface is conically compressed during the punching process and the bottom surface remains essentially cylindrical, although the front edge should be rounded off somewhat.
  • this desired rounding off can be achieved during the one-step stamping and embossing process.
  • Disadvantages are the resulting sharp front edge between the side surfaces, the peripheral edge between the conical top surface and the shaft circumference, the sharp-edged transition between the wedge-shaped side surfaces and the shaft circumference in the middle axial section, and the probably unavoidable front edge between the cylindrical base surface and the side surfaces, since the desired automatic rounding , if at all, can be done only to a very small extent. Since the contact pins are provided with a gold plating, damage in the area of the sharp edges cannot be avoided if the contact pins are actuated frequently, so that contact difficulties can arise.
  • the object of the invention is to design a contact pin in such a way that the number of edges at the tapered pin end is at least reduced in order to create a pin tip that is as free of edges as possible from the rotating part by simple stamping and embossing processes. This object is achieved by the features of the characterizing part of claim 1.
  • the new contact pin tip is designed like a turned part and largely avoids edge transitions between the individual surfaces, particularly in the area of the shaft circumference. A thin gold plating is therefore well protected against scraping.
  • the method for producing a contact pin is characterized by a first stamping process with which the curved side surfaces are formed and by a subsequent stamping process with stamping tools which move in the stamping direction and which form the top and bottom surfaces. If the embossing surfaces of the embossing tools are shaped in such a way that they run approximately parallel to their direction of movement in the parting plane of the embossing tools, transition curvatures can be provided in the embossing surfaces which cover the transition zones in the region of the otherwise occurring edges between the top and bottom surfaces on the one hand and the side surfaces on the other hand round off, so that a completely edge-free contact pin tip can be achieved in only two work steps.
  • the contact pin 10 has a cylindrical shaft 12 with a rear fastening end 14.
  • the front pin tip 16 has two single-curved side faces 22 which are not curved in the circumferential direction of the shaft 12, but rather only in an axial plane.
  • the peripheral contours of the side surfaces 22 are therefore the same in parallel planes to the axial plane on which the side surfaces 22 are perpendicular.
  • the two side surfaces 22 meet at the front end of the pin and merge continuously into one another without edges.
  • the contour of these two contiguous side surfaces 22 thus forms a semi-oval or a semi-ellipse, because the two side surfaces 22 are arranged symmetrically to that axial plane 3-3 which is perpendicular to the already mentioned axial plane 2-2, on which the side surfaces 22 are perpendicular .
  • the two side surfaces 22 run tangentially into the rectilinear surface lines of the shaft 12.
  • a cover surface 18 adjoins the two side surfaces 22 at the top and a bottom surface 20 at the bottom.
  • the top and bottom surfaces 18, 20 are doubly curved, both in the axial direction and in the circumferential direction. In this way, a tapering similar to a rotating part to the front pin end is achieved up to the height of the side faces 22, which is the smallest at the pin front end.
  • the top and bottom surfaces 18, 20 run tangentially and thus edge-free into the corresponding surface lines of the shaft 12 in any axial cuts.
  • the top surface 18 and the bottom surface 20 are shaped and arranged in mirror image to the axial plane 2-2.
  • the side surfaces 22 form edges 24 with the top surface 18 and edges 26 with the bottom surface 20, which, however, never reach the circumferential contour of the shaft 12.
  • These edges 24, 26 extend predominantly in the longitudinal direction of the pin and are therefore comparatively harmless, especially since the angle which the adjacent surfaces form at these edges 24, 26 is very obtuse.
  • FIG. 6 shows a punching tool 34 which has a semi-oval or semi-elliptical cutting edge 28 with which elements are punched away from the front end of the cylindrical shaft 12, so that the semi-elliptical side surface contour 22 is formed.
  • the top and bottom surfaces 18, 20 of the pin 10 are then formed by means of two stamping tools 36, 38. These two stamping tools 36, 38 have mold cavities 30, 32, in which double-curved stamping surfaces 40, 42 are formed.
  • the embossing tools 36, 38 are moved towards one another in the same direction as the punching tool 34 with the pin 10 held in place.
  • the contact pin When the two embossing tools 36, 38 touch each other, the contact pin has the dome formation shown in FIGS. 1 to 5.
  • the mold cavities 40.42 have semicircular cross sections with a continuously decreasing diameter in the axial direction towards the inner end. As a result of the material flowing during the embossing process, it is already achieved that the edges 24, 26 run, that is to say are rounded off. The pin tip thus has the desired shape similar to the turned part.
  • a second stamping operation follows with the two stamping tools 44, 46, which are moved at right angles to the stamping tools 36, 38.
  • These further embossing tools 44, 46 have mold cavities 48, 50 which correspond to the mold cavities 40, 42 and also have semicircular cross sections.

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  • Manufacturing Of Electrical Connectors (AREA)
  • Forging (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Manufacture Of Switches (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Eyeglasses (AREA)

Abstract

1. Contact pin comprising a cylindric shaft having a tapering summit (16) consisting of at least two side faces (22), a curved upper face (18) and a curved bottom face (20), the two side faces (22) thereof arranged rectangularly to an axial plane (2-2) of the pin (10) and mirror-inverted to that axial plane (3-3) forming right angles therewith, characterized in that both side faces (22) have a curved contour and along a continuous line have an edge-free transition and in that axial plane being at right angles therewith running substantially tangentially into the contour of the shaft (12) and that the upper and bottom faces (18, 20) are curved both in axial and circumferential direction and are arranged in mirror-inverted fashion to one another and also run in an edge-free manner tangentially into the contour of the shaft (12).

Description

Die Erfindung betrifft einen Kontaktstift mit zylindrischem Schaft und sich zum Ende hin verjüngender Kuppe, die sich aus mindestens zwei Seitenflächen und zwei gewölbten Deck-und Bodenflächen zusammensetzt und von denen die zwei Seitenflächen rechtwinklig zu einer Axialebene des Stiftes und spiegelbildlich zu deren dazu senkrechten Axialebene angeordnet sind.The invention relates to a contact pin with a cylindrical shaft and a tapered end, which is composed of at least two side surfaces and two curved top and bottom surfaces and of which the two side surfaces are arranged at right angles to an axial plane of the pin and in mirror image to the axial plane perpendicular thereto are.

Aus DE-A-1 589 820 ist ein solcher Kontaktstift bekannt. Die beiden Seitenflächen sind eben und stoßen keilförmig an einer Vorderkante zusammen. Die Deckfläche wird während des Stanzvorganges konisch gestaucht und die Bodenfläche bleibt im wesentlichen zylindrisch, wobei sich jedoch die Vorderkante etwas abrunden soll. Allerdings ist fraglich, ob sich diese gewünschte Abrundung während des einschrittigen Stanz-und Prägevorganges erzielen läßt.Such a contact pin is known from DE-A-1 589 820. The two side surfaces are flat and meet in a wedge shape on a front edge. The top surface is conically compressed during the punching process and the bottom surface remains essentially cylindrical, although the front edge should be rounded off somewhat. However, it is questionable whether this desired rounding off can be achieved during the one-step stamping and embossing process.

Nachteilig ist die entstehende scharfe Vorderkante zwischen den Seitenflächen, die Umfangskante zwischen konischer Deckfläche und dem Schaftumfang, der scharfkantige Übergang zwischen den keilförmigen Seitenflächen und dem Schaftumfang im mittleren Axialschnitt sowie die wohl unvermeidbare Vorderkante zwischen zylindrischer Bodenfläche .und den Seitenflächen, da die gewünschte selbsttätige Abrundung, wenn überhaupt, dann nur in sehr geringem Maß erfolgen kann. Da die Kontaktstifte mit einer Goldauflage versehen werden, ist eine Beschädigung im Bereich der scharfen Kanten bei häufiger Betätigung der Kontaktstifte nicht zu vermeiden, sodaß es zu Kontaktschwierigkeiten kommen kann.Disadvantages are the resulting sharp front edge between the side surfaces, the peripheral edge between the conical top surface and the shaft circumference, the sharp-edged transition between the wedge-shaped side surfaces and the shaft circumference in the middle axial section, and the probably unavoidable front edge between the cylindrical base surface and the side surfaces, since the desired automatic rounding , if at all, can be done only to a very small extent. Since the contact pins are provided with a gold plating, damage in the area of the sharp edges cannot be avoided if the contact pins are actuated frequently, so that contact difficulties can arise.

Aufgabe der Erfindung ist es, einen Kontaktstift so auszubilden, daß die Zahl der Kanten am verjüngten Stiftende mindestens verringert wird, um durch einfache Stanz-Prägevorgänge eine möglichst kantenfreie drehteilähnliche Stiftkuppe zu schaffen. Diese Aufgabe wird durch die Merkmale des Kennzeichnungsteils des Anspruchs 1 gelöst.The object of the invention is to design a contact pin in such a way that the number of edges at the tapered pin end is at least reduced in order to create a pin tip that is as free of edges as possible from the rotating part by simple stamping and embossing processes. This object is achieved by the features of the characterizing part of claim 1.

Die neue Kontaktstiftkuppe ist drehteilähnlich ausgebildet und vermeidet weitestgehend Kantenübergänge zwischen den einzelnen Flächen, insbesondere im Bereich des Schaftumfanges. Eine dünne Goldauflage ist daher gegen Abschabungen gut geschützt.The new contact pin tip is designed like a turned part and largely avoids edge transitions between the individual surfaces, particularly in the area of the shaft circumference. A thin gold plating is therefore well protected against scraping.

Das Verfahren zur Herstellung eines Kontaktstiftes ist gekennzeichnet durch einen ersten Stanzvorgang, mit dem die gewölbten Seitenflächen gebildet werden und durch einen anschließenden Prägevorgang mit in Stanzrichtung bewegten Prägewerkzeugen, die die Deck- und Bodenflächen formen. Werden dabei die Prägeflächen der Prägewerkzeuge so geformt, daß sie in der Teilungsebene der Prägewerkzeuge etwa parallel zu ihrer Bewegungsrichtung verlaufen, so können Übergangskrümmungen in den Prägeflächen vorgesehen werden, die die Übergangszonen im Bereich der sonst entstehenden Kanten zwischen Deck-und Bodenfläche einerseits und den Seitenflächen andererseits abrunden, womit eine vollständig kantenfreie Kontaktstiftkuppe in nur zwei Arbeitsgängen erzielbar ist.The method for producing a contact pin is characterized by a first stamping process with which the curved side surfaces are formed and by a subsequent stamping process with stamping tools which move in the stamping direction and which form the top and bottom surfaces. If the embossing surfaces of the embossing tools are shaped in such a way that they run approximately parallel to their direction of movement in the parting plane of the embossing tools, transition curvatures can be provided in the embossing surfaces which cover the transition zones in the region of the otherwise occurring edges between the top and bottom surfaces on the one hand and the side surfaces on the other hand round off, so that a completely edge-free contact pin tip can be achieved in only two work steps.

Anhand eines Ausführungsbeispieles sei die Erfindung näher beschrieben.

  • Fig. 1 zeigt eine perspektivische Ansicht eines Kontaktstiftes,
  • Fig. 2 und 3 zeigen Lähgsschnittansichten durch die Stiftkuppe längs der Linien 2-2 und 3-3,
  • Fig. 4 und 5 zeigen Querschnittsansichten der Linien 4-4 und 5-5 der Figur 1,
  • Fig. 6 zeigt ein Stanzwerkzeug mit einer Draufsicht der gestanzten Stiftkuppe,
  • Fig. 7 und 8 zeigen Prägewerkzeuge in Stirnansicht und Querschnitt zur Formung der Deck-und Bodenflächen der Stiftkuppe und
  • Figuren 9 und 10 zeigen zwei Hilfsprägewerkzeuge in Stirnansicht und innerer Seitenansicht zur Kantenabrundung.
The invention will be described in more detail using an exemplary embodiment.
  • 1 shows a perspective view of a contact pin,
  • 2 and 3 show longitudinal sectional views through the pin tip along the lines 2-2 and 3-3,
  • 4 and 5 show cross-sectional views of lines 4-4 and 5-5 of Figure 1,
  • 6 shows a punching tool with a top view of the punched pin tip,
  • 7 and 8 show embossing tools in front view and cross section for shaping the top and bottom surfaces of the pin tip and
  • FIGS. 9 and 10 show two auxiliary embossing tools in a front view and an inner side view for rounding off the edges.

Der Kontaktstift 10 hat einen zylindrischen Schaft 12 mit hinterem Befestigungsende 14. Die vordere Stiftkuppe 16 hat zwei einfach gekrümmte Seitenflächen 22, die in Umfangsrichtung des Schaftes 12 nicht, sondern lediglich in einer Axialebene gekrümmt sind. Die Umfangskonturen der Seitenflächen 22 sind also in parallelen Ebenen zu der Axialebene auf der die Seitenflächen 22 senkrecht stehen dieselben. Die beiden Seitenflächen 22 stoßen am Stiftvorderende zusammen und gehen kantenfrei stetig ineinander über. Die Kontur dieser beiden zusammenhängenden Seitenflächen 22 bildet somit ein Halboval oder eine Halbellipse, denn die beiden Seitenflächen 22 sind symmetrisch zur derjenigen Axialebene 3-3 angeordnet, die zu der schon erwähnten Axialebene 2-2, auf der die Seitenflächen 22 senkrecht stehen, rechtwinklig liegt. In dieser Axialebene 2-2 laufen die beiden Seitenflächen 22 tangential in die geradlinigen Mantellinien des Schaftes 12 ein.The contact pin 10 has a cylindrical shaft 12 with a rear fastening end 14. The front pin tip 16 has two single-curved side faces 22 which are not curved in the circumferential direction of the shaft 12, but rather only in an axial plane. The peripheral contours of the side surfaces 22 are therefore the same in parallel planes to the axial plane on which the side surfaces 22 are perpendicular. The two side surfaces 22 meet at the front end of the pin and merge continuously into one another without edges. The contour of these two contiguous side surfaces 22 thus forms a semi-oval or a semi-ellipse, because the two side surfaces 22 are arranged symmetrically to that axial plane 3-3 which is perpendicular to the already mentioned axial plane 2-2, on which the side surfaces 22 are perpendicular . In this axial plane 2-2, the two side surfaces 22 run tangentially into the rectilinear surface lines of the shaft 12.

An die beiden Seitenflächen 22 schließt sich oben eine Deckfläche 18 und unten eine Bodenfläche 20 an. Die Deck- und Bodenflächen 18, 20 sind doppelt gekrümmt und zwar sowohl in axialer Richtung als auch in Umfangsrichtung. Damit wird eine drehteilähnliche Verjüngung zum vorderen Stiftende hin bis auf die Höhe der Seitenflächen 22 erreicht, die am Stiftvorderende am geringsten ist. Hinten laufen die Deck- und Bodenflächen 18, 20 in allen beliebigen Axialschnitten tangential und damit kantenfrei in die entsprechenden Mantellinien des Schaftes 12 ein. Die Deckfläche 18 und die Bodenfläche 20 sind spiegelbildlich zur Axialebene 2-2 geformt und angeordnet.A cover surface 18 adjoins the two side surfaces 22 at the top and a bottom surface 20 at the bottom. The top and bottom surfaces 18, 20 are doubly curved, both in the axial direction and in the circumferential direction. In this way, a tapering similar to a rotating part to the front pin end is achieved up to the height of the side faces 22, which is the smallest at the pin front end. At the rear, the top and bottom surfaces 18, 20 run tangentially and thus edge-free into the corresponding surface lines of the shaft 12 in any axial cuts. The top surface 18 and the bottom surface 20 are shaped and arranged in mirror image to the axial plane 2-2.

Die Seitenflächen 22 bilden mit der Deckfläche 18 Kanten 24 und mit der Bodenfläche 20 Kanten 26, die jedoch niemals die Umfangskontur des Schaftes 12 erreichen. Diesen Kanten 24, 26 erstrecken sich überwiegend in Stiftlängsrichtung und sind daher vergleichsweise ungefährlich, zumal der Winkel, den die benachbarten Flächen an diesen Kanten 24, 26 bilden sehr stumpf ist.The side surfaces 22 form edges 24 with the top surface 18 and edges 26 with the bottom surface 20, which, however, never reach the circumferential contour of the shaft 12. These edges 24, 26 extend predominantly in the longitudinal direction of the pin and are therefore comparatively harmless, especially since the angle which the adjacent surfaces form at these edges 24, 26 is very obtuse.

Die Kanten 24, 26 können, wie nachstehend noch erläutert wird durch gewölbte Übergangszonen ersetzt werden, sodaß die Stiftkuppe 16 absolut kantenfrei ist. Fig. 6 zeigt ein Stanzwerkzeug 34, das eine halbovale oder halbelliptische Schneidkante 28 hat, mit dem vom Vorderende des zylindrischen Schaftes 12 Elemente weggestanzt werden, sodaß die halbelliptische Seitenflächenkontur 22 entsteht. In einem ersten Prägevorgang werden dann mittels zweier Prägewerkzeuge 36, 38 die Deck- und Bodenflächen 18, 20 des Stiftes 10 geformt. Diese beiden Prägewerkzeuge 36, 38 haben Formhohlräume 30, 32, in denen doppeltgekrümmte Prägeflächen 40, 42 ausgebildet sind. Die Prägewerkzeuge 36, 38 werden in derselben Richtung wie das Stanzwerkzeug 34 bei festgehaltenem Stift 10 aufeinander zubewegt. Wenn die beiden Prägewerkzeuge 36, 38 einander berühren hat der Kontaktstift die in Figuren 1 bis 5 dargestellte Kuppenausbildung. Die Formhohlräume 40.42 haben halbkreisförmige Querschnitte mit sich in axialer Richtung zum inneren Ende hin stetig verringerndem Durchmesser. Dadurch wird durch das Fließen des Materials während des Prägevorganges schon erreicht, daß die Kanten 24, 26 verlaufen, also abgerundet werden. Die Stiftkuppe hat damit die gewünschte drehteilähnliche Form.The edges 24, 26 can, as below to be explained will be replaced by curved transition zones, so that the pin tip 16 is absolutely free of edges. FIG. 6 shows a punching tool 34 which has a semi-oval or semi-elliptical cutting edge 28 with which elements are punched away from the front end of the cylindrical shaft 12, so that the semi-elliptical side surface contour 22 is formed. In a first stamping process, the top and bottom surfaces 18, 20 of the pin 10 are then formed by means of two stamping tools 36, 38. These two stamping tools 36, 38 have mold cavities 30, 32, in which double-curved stamping surfaces 40, 42 are formed. The embossing tools 36, 38 are moved towards one another in the same direction as the punching tool 34 with the pin 10 held in place. When the two embossing tools 36, 38 touch each other, the contact pin has the dome formation shown in FIGS. 1 to 5. The mold cavities 40.42 have semicircular cross sections with a continuously decreasing diameter in the axial direction towards the inner end. As a result of the material flowing during the embossing process, it is already achieved that the edges 24, 26 run, that is to say are rounded off. The pin tip thus has the desired shape similar to the turned part.

Soll diese kantenfreie, drehteilähnliche Form noch weiter verbessert werden, so schließt sich ein zweiter Prägevorgang mit den beiden Prägewerkzeugen 44, 46 an, die rechtwinklig zu den Prägewerkzeugen 36, 38 bewegt werden. Diese weiteren Prägewerkzeuge 44, 46 haben Formhohlräume 48, 50, die den Formhohlräumen 40, 42 entsprechen und ebenfalls halbkreisförmige Querschnitte aufweisen. Mit diesen Prägewerkzeugen 44, 46 werden etwaige nach dem ersten Prägevorgang noch verbliebene Kanten oder Ungleichheiten an der Stiftkuppe beseitigt, wie etwa die Kanten 24, 26 und es ergeben sich an deren Stelle abgerundete Übergangszonen, die in Fig. 5 bei 52 strichpunktiert veranschaulicht sind.If this edge-free, turned part-like shape is to be further improved, a second stamping operation follows with the two stamping tools 44, 46, which are moved at right angles to the stamping tools 36, 38. These further embossing tools 44, 46 have mold cavities 48, 50 which correspond to the mold cavities 40, 42 and also have semicircular cross sections. With these embossing tools 44, 46, any edges or inequalities on the pin tip that are still left after the first embossing process, such as edges 24, 26, are eliminated, and rounded transition zones result, which are illustrated in FIG.

Claims (8)

1. Contact pin comprising a cylindric shaft having a tapering summit (16) consisting of at least two side faces (22), a curved upper face (18) and a curved bottom face (20), the two side faces (22) thereof arranged rectangularly to an axial plane (2-2) of the pin (10) and mirror-inverted to that axial plane (3-3) forming right angles therewith, characterized in that both side faces (22) have a curved contour and along a continuous line have an edge-free transition and in that axial plane being at right angles therewith running substantially tangentially into the contour of the shaft (12) and that the upper and bottom faces (18, 20) are curved both in axial and circumferential direction and are arranged in mirror-inverted fashion to one another and also run in an edge-free manner tangentially into the contour of the shaft (12).
2. Contact pin according to claim 1, characterized in that the transition areas between the side faces (22) and. the upper and bottom faces (18, 20) are rounded.
3. Method for manufacturing a contact pin according to claim 1 or 2, in which the side faces (22) are formed by a first punching step, characterized in that the upper and bottom faces (18, 20) are formed by a subsequent upsetting step using upsetting dies (36, 38) moved in punching direction.
4. Method according to claim 3, characterized in that transition areas between the side faces (22) and upper and bottom faces (18, 20) are formed during a further upsetting step using upsetting dies (44, 46) which are moved at right angles to the first upsetting step, the transition areas connecting adjacent surfaces in an edge-free manner.
5. Device for the performance of the method according to claim 3, characterized in that the punching die (34) used in the first punching step has a half-elliptic or half-oval cutting edge (28) and the upsetting dies (36, 38) have forming chambers (30, 32) with doubly curved upsetting surfaces (40, 42) and that the contour of the forming chambers (30, 32) in the joint face of the upsetting dies (36, 38) is equal or geometrically similar with the contour of the cutting edges (28) of the punching die (34).
6. Device according to claim 5, characterized in that the upsetting surfaces (40, 42 ; 48, 50) of the upsetting dies (36, 38 ; 44, 46) in the joint face thereof run out substantially parallel with their moving direction.
7. Device according to claim 5 or 6, characterized in that the forming chambers (40, 42 ; 48, 50) have semicircular cross-sections, the diameters thereof continuously reducing in axial direction.
EP83111986A 1982-12-28 1983-11-30 Contact pin and process and device for its manufacture Expired EP0114976B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83111986T ATE35597T1 (en) 1982-12-28 1983-11-30 CONTACT PIN AND METHOD AND APPARATUS FOR PRODUCTION THEREOF.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3248256 1982-12-28
DE3248256A DE3248256C3 (en) 1982-12-28 1982-12-28 Contact pin

Publications (3)

Publication Number Publication Date
EP0114976A2 EP0114976A2 (en) 1984-08-08
EP0114976A3 EP0114976A3 (en) 1987-01-21
EP0114976B1 true EP0114976B1 (en) 1988-07-06

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EP83111986A Expired EP0114976B1 (en) 1982-12-28 1983-11-30 Contact pin and process and device for its manufacture

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EP (1) EP0114976B1 (en)
JP (1) JPS59123172A (en)
AT (1) ATE35597T1 (en)
DE (2) DE3248256C3 (en)

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DE102013213497A1 (en) * 2013-05-24 2014-11-27 Continental Teves Ag & Co. Ohg Method for producing a contact element, contact element and its use
DE102020003458A1 (en) * 2020-06-09 2021-12-09 Wieland-Werke Aktiengesellschaft Method for producing a device for measuring current intensities and device for measuring current intensities

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GB278359A (en) * 1926-10-01 1927-12-22 Deltavis Co Process of manufacturing of a plug for electrical connections and plugs manufactured according to this process
US3071844A (en) * 1959-08-05 1963-01-08 Malco Mfg Co Method of making a terminal
US3416126A (en) * 1966-04-18 1968-12-10 Gen Electric Contact pin and manufacture thereof
US4057315A (en) * 1976-08-02 1977-11-08 E. I. Du Pont De Nemours And Company Circuit board pin
CA1097417A (en) * 1978-07-31 1981-03-10 Raymond Bernier No translation available
DE3112245C2 (en) * 1981-03-27 1984-10-31 Siemens AG, 1000 Berlin und 8000 München Procedure for sharpening or sharpening contact pins

Also Published As

Publication number Publication date
JPS59123172A (en) 1984-07-16
DE3248256C2 (en) 1991-02-28
EP0114976A3 (en) 1987-01-21
DE3248256C3 (en) 1996-01-18
JPH0465503B2 (en) 1992-10-20
DE3377321D1 (en) 1988-08-11
EP0114976A2 (en) 1984-08-08
ATE35597T1 (en) 1988-07-15
DE3248256A1 (en) 1984-06-28

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