EP0117213A1 - Apparatus for cold-forming metal workpieces having opposite axial elements - Google Patents

Apparatus for cold-forming metal workpieces having opposite axial elements Download PDF

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Publication number
EP0117213A1
EP0117213A1 EP84420011A EP84420011A EP0117213A1 EP 0117213 A1 EP0117213 A1 EP 0117213A1 EP 84420011 A EP84420011 A EP 84420011A EP 84420011 A EP84420011 A EP 84420011A EP 0117213 A1 EP0117213 A1 EP 0117213A1
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EP
European Patent Office
Prior art keywords
die
fixed part
spinning
axial
forming
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
EP84420011A
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German (de)
French (fr)
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EP0117213B1 (en
Inventor
Guy Bostbarge
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.)
Ateliers Mecaniques et Industries Speciales SAS AMIS
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Ateliers Mecaniques et Industries Speciales SAS AMIS
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Priority to AT84420011T priority Critical patent/ATE24127T1/en
Publication of EP0117213A1 publication Critical patent/EP0117213A1/en
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Publication of EP0117213B1 publication Critical patent/EP0117213B1/en
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints
    • B21K1/765—Outer elements of coupling members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/03—Making uncoated products by both direct and backward extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/74—Making machine elements forked members or members with two or more limbs, e.g. U-bolts, anchors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints

Definitions

  • Tools are known for the manufacture of metal parts by extrusion provided with lateral extensions such as the braces of universal joints. Such a device has been described in document FR A 2 226 228.
  • the present invention aims to allow the production of a tool for manufacturing by extrusion, preferably cold, of metal parts with opposite directions of spinning in the axis of the forging or parallel to it.
  • the die ensuring the spinning of an axial extension of the part which is opposite to another axial spinning, for example tubular, is placed in the movable part of the tool, said die being hooped dynamically during the movement.
  • This element can consist of a hoop of the fixed die (s).
  • the tools illustrated in fig. l firstly comprises a fixed part assigned to the general reference 1 and a tubular movable die 2.
  • the fixed part 1 is clamped on a table not shown. It comprises a base 3 supporting a punch 4 of generally cylindrical shape and the bottom of which has a frustoconical bearing 4a. This range is engaged in a bore of complementary shape 5a of a sole 5 placed above the base 3 so that the sole in question and the punch 4 are locked relative to each other.
  • Around the punch 4 is arranged an annular ring 6 resting on the 'sole 5.
  • the sole 5 and the base 3 are held externally by a centering ring 7 which also extends around part of a die 8.
  • a centering ring 7 which also extends around part of a die 8.
  • the periphery 8b of the matrix 8 is provided slightly tapered upwards.
  • This matrix is hooped in a hoop 9 with additional bore, clamped by any appropriate means with respect to the press table to ensure an energetic clamping of all the components of part 1 of the tooling.
  • the hoop being perfectly centered relative to the sole 5, perfect centering of the annular ring 6 is carried out relative to the punch 4.
  • the punch 4 and the annular ring 6 limit a spinning section intended for the construction of the axial skirt of a part, as will be explained better below.
  • the punch is provided with a head 4b whose end face is conical, while its periphery has a diameter slightly larger than that of the body of the punch.
  • the annular ring 6 has a flange interior 6a of diameter smaller than that of said ring.
  • the movable die 2 is in the form of a tube whose lower annular face 2a is frustoconical, the connection of this face and the internal bore 2b of the die comprising a bead 2c of diameter smaller than that of the bore 2b.
  • the action of the die 2 on the piece 10 generates two simultaneous actions: first the formation of a skirt 11 in the annular space between the ring 6 and the punch 4 (fig. 2) and then the production of a cylindrical shaft end 12 located opposite the skirt 11 and which forms inside the bore 2b of the die 2.
  • the outside diameter of the movable die 2 is at play almost equal to that of the bore 8a of the die 8, so that the introduction of the movable die 2 into said bore 8a causes its hooping dynamic from the moment the die comes into contact with the piece of land 10.
  • the punch 4 could have a complex shape allowing, for example, the production of a part 14 of the kind produced as indicated above, but the skirt 11 of which would be replaced by multiple axially oriented branches, for example for the production of the tripod fork of a universal joint.
  • FIG. 3 Illustrated in fig. 3 a tool capable of allowing the production of such a fork 14. It can be seen that the annular ring 6 has been eliminated, the bore 8a of the matrix 8 externally limiting the spinning of the branches 14a of the fork 14 including the axial rod 14b is spun inside the die 2. We observe the complex shape of the punch 4 which allows the branches and openings which separate them to be obtained.
  • the dynamic hooping system of the die 2 for the spinning of the rod 14b makes it possible to statically hoop the punch 4 with multiple dies intended for the spinning of the branches 14a.
  • the static hooping of the punch 4 makes it possible to ensure (despite its weakening form) optimum resistance to the force by making it possible to manufacture the part 14, which is not achievable by a conventional spinning process.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Metal Extraction Processes (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

1. Apparatus for forming, preferably cold forming, metal workpieces (11, 12, 14, 14a, 14b) from a billet (10), comprising a fixed die (4, 6), which ensures the drawing of axial or longitudinal elements (11, 14a) and which is held statically in the fixed part (8) of the apparatus by a band so as to resist the forming forces developing in its fixed part (8) and comprising in addition a tubular die (2) which is integral with the mobile part of the apparatus and is guided in the said fixed part (8) so as to create by drawing a second axial element (12) opposed to the first (11, 14a), characterized in that the annular face (2a) of the die (2) is in the shape of a truncated cone or is concave (Fig. 3) in the direction of flow of the metal which passes into the die (2) (Fig. 1 to 3), the introduction of the tubular die (2) into the fixed part (8) of the apparatus causing it to be dynamically banded in the fixed part (8) at the moment at which this die (8) comes into contact with the billet (10).

Description

On connaît des outillages destinés à la fabrication de pièces métalliques par extrusion pourvues de prolongements latéraux tels que les croisillons de joints de cardan. On a décrit un tel dispositif dans le document FR A 2 226 228.Tools are known for the manufacture of metal parts by extrusion provided with lateral extensions such as the braces of universal joints. Such a device has been described in document FR A 2 226 228.

On connaît aussi des outillages susceptibles de permettre l'obtention d'un prolongement axial réalisé par filage simple ou multiple dans l'axe de forgeage. Dans ce cas, la filière permettant le filage central est placée dans la partie fixe de l'outillage et son frettage destiné à assurer sa résistance face aux efforts de formage est effectué statiquement par une ou plusieurs frettes.There are also known tools capable of making it possible to obtain an axial extension produced by single or multiple spinning in the forging axis. In this case, the die allowing the central spinning is placed in the fixed part of the tooling and its shrinking intended to ensure its resistance against the forming forces is carried out statically by one or more hoops.

La présente invention vise à permettre la réalisation d'un outillage de fabrication par extrusion, préférablement à froid, de pièces métalliques avec des directions opposées de filage dans l'axe du forgeage ou parallèle à celui-ci.The present invention aims to allow the production of a tool for manufacturing by extrusion, preferably cold, of metal parts with opposite directions of spinning in the axis of the forging or parallel to it.

A cet effet, la filière assurant le filage d'un prolongement axial de la pièce qui se trouve opposé à un autre filage axial, par exemple tubulaire, est placé dans la partie mobile de l'outillage, ladite filière étant frettée dynamiquement pendant le mouvement de descente du coulisseau de la presse, à l'intérieur d'un élément de la partie fixe de l'outillage. Cet élément peut consister en une frette de la ou des filières fixes.To this end, the die ensuring the spinning of an axial extension of the part which is opposite to another axial spinning, for example tubular, is placed in the movable part of the tool, said die being hooped dynamically during the movement. lowering of the press slide, inside an element of the fixed part of the tool. This element can consist of a hoop of the fixed die (s).

Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer :

  • Fig. l est une vue en coupe d'un outillage suivant l'invention à sa position ouverte.
  • Fig. 2 illustre la manière dont une pièce à filages opposés peut être réalisée avec l'outillage illustré en fig. 1. Dans cette figure, ce dernier est représenté fermé, c'est-à-dire à la fin du forgeage.
  • Fig. 3 est une vue semblable à celle de fig. 2 mais montrant une variante.
The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it presents and the advantages which it is capable of providing:
  • Fig. l is a sectional view of a tool according to the invention in its open position.
  • Fig. 2 illustrates how a spinning part opposite can be carried out with the tool illustrated in fig. 1. In this figure, the latter is shown closed, that is to say at the end of forging.
  • Fig. 3 is a view similar to that of FIG. 2 but showing a variant.

L'outillage illustré en fig. l comprend tout d'abord une partie fixe affectée de la référence générale 1 et une filière mobile tubulaire 2. La partie fixe 1 est bridée sur une table non représentée. Elle comprend une embase 3 supportant un poinçon 4 de forme générale cylindrique et dont le bas comporte une portée tronconique 4a. Cette portée est engagée dans un alésage de forme complémentaire 5a d'une semelle 5 placée au-dessus de l'embase 3 de manière que la semelle en question et le poinçon 4 soient verrouillés l'un par rapport à l'autre. Autour du poinçon 4 est disposée une bague annulaire 6 reposant sur la 'semelle 5.The tools illustrated in fig. l firstly comprises a fixed part assigned to the general reference 1 and a tubular movable die 2. The fixed part 1 is clamped on a table not shown. It comprises a base 3 supporting a punch 4 of generally cylindrical shape and the bottom of which has a frustoconical bearing 4a. This range is engaged in a bore of complementary shape 5a of a sole 5 placed above the base 3 so that the sole in question and the punch 4 are locked relative to each other. Around the punch 4 is arranged an annular ring 6 resting on the 'sole 5.

La semelle 5 et l'embase 3 sont maintenues extérieurement par une couronne de centrage 7 qui s'étend également autour d'une partie d'une matrice 8. Dans l'alésage étagé 8a de cette dernière est engagée la bague annulaire 6. Le pourtour 8b de la matrice 8 est prévu légèrement conique vers le haut. Cette matrice est frettée dans une frette 9 à alésage complémentaire, bridée par tous moyens appropriés par rapport à la table de la presse pour assurer un serrage énergique de tous les composants de la partie 1 de l'outillage. La frette étant centrée parfaitement par rapport à la semelle 5, on réalise un centrage parfait de la bague annulaire 6 par rapport au poinçon 4.The sole 5 and the base 3 are held externally by a centering ring 7 which also extends around part of a die 8. In the stepped bore 8a of the latter is engaged the annular ring 6. The periphery 8b of the matrix 8 is provided slightly tapered upwards. This matrix is hooped in a hoop 9 with additional bore, clamped by any appropriate means with respect to the press table to ensure an energetic clamping of all the components of part 1 of the tooling. The hoop being perfectly centered relative to the sole 5, perfect centering of the annular ring 6 is carried out relative to the punch 4.

En fait, le poinçon 4 et la bague annulaire 6 limitent une section de filage destinée à la construction de la jupe axiale d'une pièce, comme on l'expliquera mieux plus loin. A cet effet, le poinçon est pourvu d'une tête 4b dont la face extrême est conique, tandis que sa périphérie présente un diamètre légèrement plus grand que celui du corps du poinçon. De même, la bague annulaire 6 comporte une collerette intérieure 6a de diamètre inférieur à celui général de ladite bague. On observe enfin que la face extrême 6b de la bague 6 tournée vers le haut est évasée pour faciliter l'écoulement du métal lors du filage.In fact, the punch 4 and the annular ring 6 limit a spinning section intended for the construction of the axial skirt of a part, as will be explained better below. To this end, the punch is provided with a head 4b whose end face is conical, while its periphery has a diameter slightly larger than that of the body of the punch. Similarly, the annular ring 6 has a flange interior 6a of diameter smaller than that of said ring. Finally, it is observed that the end face 6b of the ring 6 facing upwards is flared to facilitate the flow of the metal during spinning.

La filière mobile 2 se présente sous la forme d'un tube dont la face annulaire inférieure 2a est tronconique, la liaison de cette face et de l'alésage intérieur 2b de la filière comportant un cordon 2c de diamètre inférieur à celui de l'alésage 2b.The movable die 2 is in the form of a tube whose lower annular face 2a is frustoconical, the connection of this face and the internal bore 2b of the die comprising a bead 2c of diameter smaller than that of the bore 2b.

Pour effectuer le filage, on part d'un lopin métallique 10 de forme générale cylindrique que l'on dispose contre la face 6b de la bague annulaire 6, puis la filière mobile 2 est introduite à l'intérieur de la matrice 8 sous une force élevée.To carry out the spinning, we start from a metal piece 10 of generally cylindrical shape which is placed against the face 6b of the annular ring 6, then the movable die 2 is introduced inside the matrix 8 under a force. high.

L'action de la filière 2 sur le lopin 10 engendre deux actions simultanées : premièrement la formation d'une jupe 11 dans l'espace annulaire compris entre la bague 6 et le poinçon 4 (fig. 2) et ensuite la réalisation d'un bout d'arbre cylindrique 12 situé à l'opposé de la jupe 11 et qui se forme à l'intérieur de l'alésage 2b de la filière 2.The action of the die 2 on the piece 10 generates two simultaneous actions: first the formation of a skirt 11 in the annular space between the ring 6 and the punch 4 (fig. 2) and then the production of a cylindrical shaft end 12 located opposite the skirt 11 and which forms inside the bore 2b of the die 2.

Conformément à l'invention, le diamètre extérieur de la filière mobile 2 est au jeu près égal à celui de l'alésage 8a de la matrice 8, de telle manière que l'introduction de la filière mobile 2 dans ledit alésage 8a provoque son frettage dynamique à partir du moment où la filière entre en contact avec le lopin 10.According to the invention, the outside diameter of the movable die 2 is at play almost equal to that of the bore 8a of the die 8, so that the introduction of the movable die 2 into said bore 8a causes its hooping dynamic from the moment the die comes into contact with the piece of land 10.

Ainsi, lors de l'attaque de la face tronconique 2a de la filière mobile 2 sur le pion 10, on est assuré que le filage s'effectuera sans rupture ni détérioration de la filière 2. On observera que le frettage dynamique en question est réalisé par la matrice 8 de la filière fixe, de telle sorte qu'il n'est pas nécessaire de prévoir de pièces supplémentaires pour la réalisation dudit frettage dynamique. Une fois la pièce terminée et la filière 2 ramenée à sa position initiale, la pièce ll-12 est extraite de la partie fixe de l'outillage au moyen d'éjecteurs 13. Ceux-ci, prévus au nombre de trois, traversent librement l'embase 3 et la semelle 5 pour venir agir sur l'arête terminale de la jupe 11.Thus, during the attack on the frustoconical face 2a of the movable die 2 on the pin 10, it is ensured that the spinning will be carried out without rupture or deterioration of the die 2. It will be observed that the dynamic hooping in question is carried out by the matrix 8 of the fixed die, so that it is not necessary to provide additional parts for the realization of said dynamic hooping. Once the part is finished and the die 2 returned to its initial position, the part ll-12 is extracted from the fixed part of the tooling by means of ejectors 13. These, provided three in number, pass freely through the base 3 and sole 5 to act on the end edge of skirt 11.

Le poinçon 4 pourrait affecter une forme complexe permettant par exemple la réalisation d'une pièce 14 du genre de celle réalisée comme indiqué ci-dessus, mais dont la jupe 11 serait remplacée par des branches multiples orientées axialement, par exemple pour la réalisation de la fourche tripode d'un joint de cardan.The punch 4 could have a complex shape allowing, for example, the production of a part 14 of the kind produced as indicated above, but the skirt 11 of which would be replaced by multiple axially oriented branches, for example for the production of the tripod fork of a universal joint.

On a illustré en fig. 3 un outillage susceptible de permettre la réalisation d'une telle fourche 14. On observe que la bague annulaire 6 a été supprimée, l'alésage 8a de la matrice 8 limitant extérieurement le filage des branches 14a de la fourche 14 dont la tige axiale 14b est filée à l'intérieur de la filière 2. On observe la forme complexe du poinçon 4 qui permet l'obtention des branches et des ouvertures qui les séparent.Illustrated in fig. 3 a tool capable of allowing the production of such a fork 14. It can be seen that the annular ring 6 has been eliminated, the bore 8a of the matrix 8 externally limiting the spinning of the branches 14a of the fork 14 including the axial rod 14b is spun inside the die 2. We observe the complex shape of the punch 4 which allows the branches and openings which separate them to be obtained.

Dans ce cas, le système de frettage dynamique de la filière 2 pour le filage de la tige 14b permet de fretter statiquement le poinçon 4 à filières multiples destiné au filage des branches 14a.In this case, the dynamic hooping system of the die 2 for the spinning of the rod 14b makes it possible to statically hoop the punch 4 with multiple dies intended for the spinning of the branches 14a.

Le frettage statique du poinçon 4 permet d'assurer (malgré sa forme fragilisante) une résistance optimale à l'effort en rendant possible la fabrication de la pièce 14, qui n'est pas réalisable par un procédé conventionnel de filage.The static hooping of the punch 4 makes it possible to ensure (despite its weakening form) optimum resistance to the force by making it possible to manufacture the part 14, which is not achievable by a conventional spinning process.

Claims (1)

Outillage de formage à froid de pièces métalliques du genre comprenant une filière fixe (4-6) assurant le filage d'éléments axiaux ou longitudinaux et qui est frettée statiquement dans la partie fixe de l'outillage pour résister aux efforts de formage, caractérisé en ce qu'il comporte en outre une filière tubulaire (2) solidaire de la partie mobile de l'outillage et destinée à réaliser par filage un second élément axial (12) opposé aux premiers (10), ladite filière (2) venant se frotter dynamiquement à l'intérieur d'un élément (8) de la partie fixe de l'outillage.Tool for cold forming of metallic parts of the kind comprising a fixed die (4-6) ensuring the spinning of axial or longitudinal elements and which is statically hooped in the fixed part of the tool to resist the forming forces, characterized in what it further comprises a tubular die (2) integral with the movable part of the tooling and intended to produce by spinning a second axial element (12) opposite the first (10), said die (2) coming to rub dynamically inside an element (8) of the fixed part of the tool.
EP84420011A 1983-02-15 1984-01-27 Apparatus for cold-forming metal workpieces having opposite axial elements Expired EP0117213B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84420011T ATE24127T1 (en) 1983-02-15 1984-01-27 DEVICE FOR COLD FORMING OF METALLIC WORKPIECES WITH OPPOSITE AXIAL PARTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8302885 1983-02-15
FR8302885A FR2540758B1 (en) 1983-02-15 1983-02-15 COLD FORMING TOOLS OF METAL PARTS COMPRISING OPPOSITE AXIAL ELEMENTS

Publications (2)

Publication Number Publication Date
EP0117213A1 true EP0117213A1 (en) 1984-08-29
EP0117213B1 EP0117213B1 (en) 1986-12-10

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EP84420011A Expired EP0117213B1 (en) 1983-02-15 1984-01-27 Apparatus for cold-forming metal workpieces having opposite axial elements

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EP (1) EP0117213B1 (en)
AT (1) ATE24127T1 (en)
DE (1) DE3461601D1 (en)
ES (1) ES277491Y (en)
FR (1) FR2540758B1 (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4739644A (en) * 1986-12-30 1988-04-26 Honda Giken Kogyo Kabushiki Kaisha Process for forming internal gear profile cup-shaped member and apparatus therefor
EP0456862A1 (en) * 1990-05-17 1991-11-21 Instytut Obrobki Plastycznej Method and apparatus for the extrusion of comb-shaped parts for roller bearing cages
US5296317A (en) * 1992-09-03 1994-03-22 Water Gremlin Co. High torque battery terminal and method of making same
US5373720A (en) * 1992-09-03 1994-12-20 Water Gremlin Company Method of making battery terminal with necked flange
US5606887A (en) * 1995-06-02 1997-03-04 Tulip Corporation Apparatus and method for cold forming an L-shaped lead alloy battery terminal
US5632173A (en) * 1995-05-17 1997-05-27 Tulip Corporation Apparatus and method for cold forming a ring on a lead alloy battery terminal
US5655400A (en) * 1995-06-02 1997-08-12 Tulip Corporation Progressive die apparatus and method for making a lead alloy battery terminal
US5791183A (en) * 1995-05-17 1998-08-11 Tulip Corporation Apparatus and method for cold forming a ring on a lead alloy battery terminal including an anti-torque structure
CN100591437C (en) * 2008-05-07 2010-02-24 四川振强模锻有限公司 U shaped suspension clamp swaging technique
US8202328B2 (en) 2004-01-02 2012-06-19 Water Gremlin Company Battery part
US8497036B2 (en) 2009-04-30 2013-07-30 Water Gremlin Company Battery parts having retaining and sealing features and associated methods of manufacture and use
US8701743B2 (en) 2004-01-02 2014-04-22 Water Gremlin Company Battery parts and associated systems and methods
US9034508B2 (en) 2002-03-29 2015-05-19 Water Gremlin Company Multiple casting apparatus and method
US9748551B2 (en) 2011-06-29 2017-08-29 Water Gremlin Company Battery parts having retaining and sealing features and associated methods of manufacture and use
US9954214B2 (en) 2013-03-15 2018-04-24 Water Gremlin Company Systems and methods for manufacturing battery parts
US11038156B2 (en) 2018-12-07 2021-06-15 Water Gremlin Company Battery parts having solventless acid barriers and associated systems and methods

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US3005259A (en) * 1958-11-24 1961-10-24 Chrysler Corp Method of making brake drums
FR1464560A (en) * 1963-10-14 1967-01-06 Caltexa Trust Reg Motor vehicle door locks and devices for their manufacture
DE1627665A1 (en) * 1967-04-13 1971-08-05 Aluminium U Metallwerke Soeren Process and device for the production of sleeves and technical extrusion parts made of light metal
FR2226228A1 (en) * 1973-04-17 1974-11-15 Glaenzer Spicer Sa
FR2340153A1 (en) * 1976-02-05 1977-09-02 Perrier Jean Flat steel parts made by cold forging - using annealed blanks and tools providing close dimensional tolerances
US4177665A (en) * 1978-04-03 1979-12-11 Schurmann Heinz P Cold flow forming

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3005259A (en) * 1958-11-24 1961-10-24 Chrysler Corp Method of making brake drums
FR1464560A (en) * 1963-10-14 1967-01-06 Caltexa Trust Reg Motor vehicle door locks and devices for their manufacture
DE1627665A1 (en) * 1967-04-13 1971-08-05 Aluminium U Metallwerke Soeren Process and device for the production of sleeves and technical extrusion parts made of light metal
FR2226228A1 (en) * 1973-04-17 1974-11-15 Glaenzer Spicer Sa
FR2340153A1 (en) * 1976-02-05 1977-09-02 Perrier Jean Flat steel parts made by cold forging - using annealed blanks and tools providing close dimensional tolerances
US4177665A (en) * 1978-04-03 1979-12-11 Schurmann Heinz P Cold flow forming

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4739644A (en) * 1986-12-30 1988-04-26 Honda Giken Kogyo Kabushiki Kaisha Process for forming internal gear profile cup-shaped member and apparatus therefor
EP0456862A1 (en) * 1990-05-17 1991-11-21 Instytut Obrobki Plastycznej Method and apparatus for the extrusion of comb-shaped parts for roller bearing cages
US5296317A (en) * 1992-09-03 1994-03-22 Water Gremlin Co. High torque battery terminal and method of making same
US5349840A (en) * 1992-09-03 1994-09-27 Water Gremlin Company Method of making a high torque battery terminal
US5373720A (en) * 1992-09-03 1994-12-20 Water Gremlin Company Method of making battery terminal with necked flange
US5632173A (en) * 1995-05-17 1997-05-27 Tulip Corporation Apparatus and method for cold forming a ring on a lead alloy battery terminal
US5791183A (en) * 1995-05-17 1998-08-11 Tulip Corporation Apparatus and method for cold forming a ring on a lead alloy battery terminal including an anti-torque structure
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Also Published As

Publication number Publication date
ES277491Y (en) 1985-03-01
EP0117213B1 (en) 1986-12-10
FR2540758B1 (en) 1986-03-07
ES277491U (en) 1984-07-16
DE3461601D1 (en) 1987-01-22
FR2540758A1 (en) 1984-08-17
ATE24127T1 (en) 1986-12-15

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