EP2011585A1 - Forging die for hammering - Google Patents

Forging die for hammering Download PDF

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Publication number
EP2011585A1
EP2011585A1 EP20080158905 EP08158905A EP2011585A1 EP 2011585 A1 EP2011585 A1 EP 2011585A1 EP 20080158905 EP20080158905 EP 20080158905 EP 08158905 A EP08158905 A EP 08158905A EP 2011585 A1 EP2011585 A1 EP 2011585A1
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EP
European Patent Office
Prior art keywords
die
column
tooling
tooling according
piece
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
EP20080158905
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German (de)
French (fr)
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EP2011585B1 (en
Inventor
Georgio Mariani
Christophe Perret
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Safran Aircraft Engines SAS
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SNECMA SAS
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Publication date
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Publication of EP2011585A1 publication Critical patent/EP2011585A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/02—Dies or mountings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/04—Frames; Guides
    • 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
    • B21K1/761—Making machine elements elements not mentioned in one of the preceding groups rings
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9454—Reciprocable type

Definitions

  • the present invention relates to the stamping of metal parts by means of a pestle, more particularly the stamping of annular pieces and aims at securing means during the stamping operation.
  • Forging by stamping consists of forming by plastic deformation pieces blanks initially carried to a suitable temperature. These parts are made of non-ferrous alloys such as alloys of aluminum, copper, titanium, nickel, etc.
  • Forming is therefore a forging operation performed using a tool comprising matrices: an upper half-die and a lower half-die that are brought closer to one another.
  • the dies are engraved to the shape of the piece.
  • a pestle comprises two fixed frame members each supporting an insert holder and an insert or die.
  • the upper insert door guided by vertical columns is driven at a speed of 1 to 2 m / s against the lower insert holder on the die of which the blank to be tapped.
  • Both matrices are suitably engraved to give the desired shape.
  • the piece When the insert holder resumes its upward movement, the piece is released and thus has the tendency to jump and bounce.
  • the piece can leave the engraving, slide on the insert, or fall out of the matrix.
  • the coin can also turn around during the rebound;
  • a first object of the invention is to find a means relating to the stamping of an annular piece which, during a rebound of the piece, allows it to be retained on the tool.
  • Another object of the invention is to find a means which is also capable of retaining the piece in the center of the tool after the rebound.
  • Another object of the invention is to prevent the rollover of the workpiece.
  • the above objectives are achieved with tooling for tamping with a pylon of an annular piece comprising a lower insert door, with a lower die cooperating with an upper insert door and an upper matrix, the two matrices comprising an annular cavity of stamping.
  • the tooling is characterized in that it comprises a means for guiding the workpiece limiting its lateral movements when the latter is raised from the lower die.
  • the guiding means comprises a column formed between the two dies arranged inside the ring formed by the annular cavity.
  • a central column has the advantage of reducing the part in the die-casting cavity when the rebound forces it against the column, and avoids or limits the intervention of the forge-mate. This further reduces the risks of handling heavy parts and high temperatures.
  • the height of the column is at least equal to the bounce height of the part. The central arrangement by limiting the movement of the part also prevents its reversal by the rebound.
  • the column is integral with the lower matrix.
  • the lower die comprises a bore, formed in the axis of the ring formed by the die-casting cavity, in which the column is housed.
  • a wedging means is for example constituted by an axial clamping flange, which is provided with the column cooperating with a housing formed in the lower die.
  • the column is fixed and the upper die comprises a bore for receiving the upper part of the column.
  • the orifice formed in the upper die comprises a centering cone.
  • the invention also relates to the method of tamping the pestle of an annular piece of disposing a tool of the invention in the pestle and then to hit the piece by means of the tooling.
  • a column disposed at the center of the annular piece to be formed, cooperates with sealing elements to contain the metal being deformed.
  • the column in this type of press does not perform any guiding function or retention of the part because there is no rebound, the movement speeds being very low, less than 0.1 m / s.
  • a pestle 1 comprises a lower fixed frame 2 and an upper fixed frame 3 above it.
  • the two frames each support tools.
  • the lower tooling 20 comprises an insert holder 21 and an insert or die 22.
  • the upper tooling 30 comprises an insert holder 31 and an insert or die 32.
  • the dies are fixed in their respective insert holder removably either by hooping or by means of keys.
  • the two matrices 22 and 32 each comprise a stamping cavity and form between them, when they are placed one on the other, the volume of the part to be obtained.
  • a suitable mechanism ensures the movement of the two door inserts, one towards the other.
  • Piece P is struck and shaped in the die-in cavity.
  • Columns 34 mounted on the upper insert door cooperate with bores 24 formed in the lower insert holder to ensure the centering of the two dies relative to each other.
  • the tooling according to the invention is represented at figure 2 .
  • two matrices 122, 132 arranged one above the other: the upper matrix 132 above the lower die 122.
  • the two matrices are disk-shaped and etched on the surface of a cavity annular 122a and 132a respectively.
  • the two cavities 122a and 132a are coaxial and define between them an annular cavity of axis XX perpendicular to the plane of the matrix disks.
  • the cavity 122a-132a corresponds to the shape of the part after it has been struck between the two dies.
  • the two matrices are bored in their center.
  • the bore 122b passing through the lower die 122 is cylindrical with an axis XX of radius R1 with a widening 122c of radius R2> R1 in its lower part.
  • the bore 132b passing through the upper die is cylindrical with an axis XX of radius R 'slightly greater than R.
  • the bore comprises a flared portion 132c forming a centering cone.
  • a column 140 is engaged in the bore 122b.
  • the column comprises a flange 140a on its lower part whose shape corresponds to the enlarged portion 122c of the lower die.
  • the column is of diameter R and its height H is determined by the expected rebound of the coin struck.
  • the operation of the pestle is as follows. We have shown on the figure 3 the lower die 122 equipped with the column 140 and contained in its insert door. The column 140 is held in place by the flange which is immobilized between the insert and the bottom of the insert door.
  • the upper die 132 is mounted on the upper insert door vis-à-vis the lower die. In this position, the bore 132b is located in the extension of the column 140.
  • the upper insert door is equipped with guide and centering columns 134 which cooperate with bores formed in the upper insert holder. These columns have the function of ensuring correct positioning of the two matrices relative to each other at the time of coining the coin.
  • the blank piece E is placed on the lower die in the cavity 122a and the striking mechanism is actuated.
  • the upper matrix is driven against the lower matrix.
  • the projecting portion of the column is engaged in the bore 132b.
  • the introduction of the column 140 into the bore is facilitated by the centering cone.
  • the radius of the bore of the upper die is sufficient relative to that of the column to avoid unwanted friction.
  • the speed of displacement of the upper matrix is 1 to 2 m / s.
  • the piece By the applied energy, the piece is shaped to the cavities 122a-132a. In the same movement the matrix is raised and the piece bounces on a certain height which is a function of the mechanical energy that has been transferred to it.
  • the annular piece moves upward and tilts to one side. This tilting movement is stopped by the projecting portion of the column. The coin falls back into the central area of the lower die. If the piece has not fallen back into the annular cavity 122a, the operator can easily manipulate it to place it correctly without risk.
  • the height of the column is sufficient so that the piece is not projected over it.

Abstract

The rammer tool (20) has a lower insert holder (21) that comprises a lower die (22) cooperating with an upper insert holder (31) comprising an upper die (32). The upper die and the lower die have a die-cutting annular recess that forms a crown. Columns (34) are arranged inside the crown to restrict the side motion of lower insert holder, when the upper die is lifted from the lower die. An independent claim is included for method of die-cutting metal.

Description

La présente invention concerne le matriçage de pièces métalliques au moyen d'un pilon, plus particulièrement le matriçage de pièces annulaires et vise un moyen de sécurisation lors de l'opération de matriçage.The present invention relates to the stamping of metal parts by means of a pestle, more particularly the stamping of annular pieces and aims at securing means during the stamping operation.

La forge par matriçage consiste à former par déformation plastique des pièces ébauches portées initialement à une température appropriée. Ces pièces sont réalisées en alliages non ferreux tels que les alliages d'aluminium, de cuivre, de titane, de nickel, etc.Forging by stamping consists of forming by plastic deformation pieces blanks initially carried to a suitable temperature. These parts are made of non-ferrous alloys such as alloys of aluminum, copper, titanium, nickel, etc.

Le matriçage est donc une opération de forge effectuée à l'aide d'un outillage comprenant des matrices : une demi-matrice supérieure et une demi-matrice inférieure que l'on rapproche l'une de l'autre. Les matrices sont gravées à la forme de la pièce.Forming is therefore a forging operation performed using a tool comprising matrices: an upper half-die and a lower half-die that are brought closer to one another. The dies are engraved to the shape of the piece.

Dans le domaine des turbomachines aéronautiques, on fabrique par cette technique de matriçage notamment des disques de turbine. Les pièces concernées sont de forme annulaire et sont dites débouchées, c'est-à-dire avec une ouverture centrale. Elles sont en outre relativement légères, de l'ordre de 100 kg pour un disque de turbine.In the field of aerospace turbomachines, this stamping technique is made in particular of turbine discs. The parts concerned are annular and are said to be open, that is to say with a central opening. They are also relatively light, of the order of 100 kg for a turbine disc.

Plus précisément, un pilon comprend deux éléments de bâti fixes supportant chacun un porte insert et un insert ou matrice. Le porte insert supérieur guidé par des colonnes verticales est entraîné à une vitesse de 1 à 2 m/s contre le porte insert inférieur sur la matrice duquel on a disposé l'ébauche à taper. Les deux matrices sont convenablement gravées pour donner la forme souhaitée. Quand les deux demi-matrices entrent en contact par l'intermédiaire de la pièce, toute l'énergie est transmise à la matière de celle-ci. Une partie est absorbée par la déformation plastique du métal, une partie est transformée en chaleur et une autre partie est transformée en énergie mécanique. Cette dernière résulte du contact entre les deux inserts qui se produit après quelques coups après que la pièce s'est en partie déformée. En raison de l'élasticité du métal constituant les inserts cette énergie mécanique est transmise des inserts à la pièce. Lorsque le porte insert reprend sa course vers le haut, la pièce est libérée et a ainsi tendance à sauter et rebondir. Sur les matrices connues, lors du rebond, la pièce peut sortir de la gravure, glisser sur l'insert, voire tomber hors de la matrice. La pièce peut aussi se retourner lors du rebond ;More specifically, a pestle comprises two fixed frame members each supporting an insert holder and an insert or die. The upper insert door guided by vertical columns is driven at a speed of 1 to 2 m / s against the lower insert holder on the die of which the blank to be tapped. Both matrices are suitably engraved to give the desired shape. When the two half-dies come in contact through the room, all the energy is transmitted to the material thereof. A part is absorbed by the plastic deformation of the metal, a part is transformed into heat and another part is transformed into mechanical energy. The latter results from the contact between the two inserts which occurs after a few strokes after the part is partially deformed. Due to the elasticity of the metal constituting the inserts this mechanical energy is transmitted inserts to the piece. When the insert holder resumes its upward movement, the piece is released and thus has the tendency to jump and bounce. On the known matrices, during the rebound, the piece can leave the engraving, slide on the insert, or fall out of the matrix. The coin can also turn around during the rebound;

Dans ces deux cas la présence d'un compagnon de forge à proximité de la machine est nécessaire pour remettre la pièce en place.In both cases the presence of a forging companion near the machine is necessary to replace the piece.

Une solution est de mettre en oeuvre une matrice avec cuvette. Cette solution est avantageuse car applicable également aux pièces non annulaires, mais l'outillage est cher en raison principalement du surcoût matière ; en outre l'accès à la pièce est plus difficile car elle se situe au fond de la cuvette. Ainsi malgré ses avantages cette solution n'est globalement pas satisfaisante.One solution is to use a matrix with a bowl. This solution is advantageous because it is also applicable to non-annular parts, but the tooling is expensive mainly because of the extra material cost; in addition, access to the room is more difficult because it is located at the bottom of the bowl. Thus, despite its advantages, this solution is not generally satisfactory.

Un premier objectif de l'invention est de trouver un moyen relatif au matriçage d'une pièce annulaire qui, lors d'un rebond de la pièce, permet à celle-ci d'être retenue sur l'outillage.A first object of the invention is to find a means relating to the stamping of an annular piece which, during a rebound of the piece, allows it to be retained on the tool.

L'invention a comme autre objectif de trouver un moyen qui est également susceptible de retenir la pièce au centre l'outillage après le rebond.Another object of the invention is to find a means which is also capable of retaining the piece in the center of the tool after the rebound.

L'invention a comme autre objectif d'empêcher le retournement de la pièce.Another object of the invention is to prevent the rollover of the workpiece.

On atteint les objectifs ci-dessus avec un outillage pour le matriçage au pilon d'une pièce annulaire comprenant un porte insert inférieur, avec une matrice inférieure, coopérant avec un porte insert supérieur et une matrice supérieure, les deux matrices comprenant une cavité annulaire de matriçage. L'outillage est caractérisé par le fait qu'il comprend un moyen de guidage de la pièce limitant ses déplacements latéraux lorsque celle-ci est soulevée depuis la matrice inférieure.The above objectives are achieved with tooling for tamping with a pylon of an annular piece comprising a lower insert door, with a lower die cooperating with an upper insert door and an upper matrix, the two matrices comprising an annular cavity of stamping. The tooling is characterized in that it comprises a means for guiding the workpiece limiting its lateral movements when the latter is raised from the lower die.

En disposant un tel moyen de guidage sur l'outillage on assure le maintien de la pièce sur celui-ci quand il vient à être projeté en l'air. On protège ainsi le personnel qui se tient à proximité du pilon. On réduit aussi sensiblement les risques d'endommagement des pièces par des rebonds d'amplitude incontrôlée. La solution de l'invention permet indirectement d'appliquer une puissance par le pilon plus élevée que dans l'art antérieur, lorsque cela est requis pour certaines pièces. Avec les pilons de l'art antérieur en effet en cherchant à éviter les rebonds on limite au contraire le niveau de puissance appliquée. Cette élévation de niveau de puissance a un effet sur la qualité de la pièce.By disposing such a guide means on the tooling ensures the maintenance of the piece on it when it comes to be projected in the air. This protects the personnel who stands near the pestle. It also substantially reduces the risk of damage to parts by bounces of uncontrolled amplitude. The solution of the invention indirectly allows to apply a power by the pylon higher than in the prior art, when this is required for certain parts. With the drumsticks of the prior art indeed by seeking to avoid rebounds is limited on the contrary the power level applied. This rise in power level has an effect on the quality of the room.

Avantageusement le moyen de guidage comprend une colonne ménagée entre les deux matrices disposée à l'intérieur de la couronne formée par la cavité annulaire. Une colonne centrale présente l'avantage de ramener la pièce dans la cavité de matriçage lorsque le rebond l'entraîne contre la colonne, et évite ou limite l'intervention du compagnon de forge. Cela réduit encore les risques liés à la manipulation de pièces lourdes et à haute température. En particulier, la hauteur de la colonne est au moins égale à la hauteur de rebond de la pièce. La disposition centrale en limitant le déplacement de la pièce empêche également son retournement par le rebond.Advantageously, the guiding means comprises a column formed between the two dies arranged inside the ring formed by the annular cavity. A central column has the advantage of reducing the part in the die-casting cavity when the rebound forces it against the column, and avoids or limits the intervention of the forge-mate. This further reduces the risks of handling heavy parts and high temperatures. In particular, the height of the column is at least equal to the bounce height of the part. The central arrangement by limiting the movement of the part also prevents its reversal by the rebound.

De préférence la colonne est solidaire de la matrice inférieure. Notamment la matrice inférieure comprend un alésage, ménagé dans l'axe de la couronne formée par la cavité de matriçage, dans lequel est logée la colonne. Un moyen de calage est par exemple constitué par une collerette de calage axial, dont est pourvue la colonne coopérant avec un logement ménagé dans la matrice inférieure.Preferably, the column is integral with the lower matrix. In particular, the lower die comprises a bore, formed in the axis of the ring formed by the die-casting cavity, in which the column is housed. A wedging means is for example constituted by an axial clamping flange, which is provided with the column cooperating with a housing formed in the lower die.

Pour assurer un fonctionnement optimum la colonne est fixe et la matrice supérieure comprend un alésage pour la réception de la partie supérieure de la colonne. En particulier l'orifice ménagé dans la matrice supérieure comprend un cône de centrage.To ensure optimum operation, the column is fixed and the upper die comprises a bore for receiving the upper part of the column. In particular the orifice formed in the upper die comprises a centering cone.

L'invention porte également sur le procédé de matriçage au pilon d'une pièce annulaire consistant à disposer un outillage de l'invention dans le pilon puis à frapper la pièce au moyen de l'outillage.The invention also relates to the method of tamping the pestle of an annular piece of disposing a tool of the invention in the pestle and then to hit the piece by means of the tooling.

La demanderesse connaît le document DE 10356269 qui porte sur une presse pour le thixoformage de métal à l'état fluide ou pâteux. Dans un mode de réalisation, une colonne, disposée au centre de la pièce annulaire à former, coopère avec des éléments d'étanchéité pour contenir le métal en cours de déformation. La colonne dans ce type de presse ne remplit aucune fonction de guidage ni de rétention de la pièce car il ne se produit aucun rebond, les vitesses de déplacement étant très faibles, inférieures à 0,1 m/s.The applicant knows the document DE 10356269 which relates to a press for the thixoforming of metal in the fluid or pasty state. In one embodiment, a column, disposed at the center of the annular piece to be formed, cooperates with sealing elements to contain the metal being deformed. The column in this type of press does not perform any guiding function or retention of the part because there is no rebound, the movement speeds being very low, less than 0.1 m / s.

D'autres caractéristiques et avantages ressortiront de la description qui suit d'un mode de réalisation de l'invention accompagnée des dessins sur lesquels

  • La figure 1 montre schématiquement un pilon ;
  • La figure 2 montre en coupe un outillage de l'invention avec une matrice inférieure et une matrice supérieure percées d'un orifice central pour respectivement le logement et le guidage d'une colonne de centrage.
  • La figure 3 montre l'outillage de l'invention monté sur un pilon.
Other features and advantages will become apparent from the following description of an embodiment of the invention accompanied by the drawings in which
  • The figure 1 schematically shows a pestle;
  • The figure 2 shows in section a tool of the invention with a lower die and an upper die drilled with a central hole for respectively housing and guiding a centering column.
  • The figure 3 shows the tool of the invention mounted on a pestle.

Comme on le voit sur la figure 1 un pilon 1 comprend un bâti fixe inférieur 2 et un bâti fixe supérieur 3 au dessus de celui-ci. Les deux bâtis supportent chacun un outillage. L'outillage inférieur 20 comprend un porte insert 21 et un insert ou matrice 22. L'outillage supérieur 30 comprend un porte insert 31 et un insert ou matrice 32. Les matrices sont fixées dans leur porte insert respectif de façon amovible soit par frettage soit au moyen de clavettes. Les deux matrices 22 et 32 comportent chacune une cavité de matriçage et ménagent entre elles, lorsqu'elles sont posées l'une sur l'autre, le volume de la pièce à obtenir. Un mécanisme approprié assure le déplacement des deux porte inserts, l'un en direction de l'autre. La pièce P est frappée et mise en forme dans la cavité de matriçage. Des colonnes 34 montées sur la porte insert supérieure coopèrent avec des alésages 24 ménagées dans le porte insert inférieur pour assurer le centrage des deux matrices l'une par rapport à l'autre.As we see on the figure 1 a pestle 1 comprises a lower fixed frame 2 and an upper fixed frame 3 above it. The two frames each support tools. The lower tooling 20 comprises an insert holder 21 and an insert or die 22. The upper tooling 30 comprises an insert holder 31 and an insert or die 32. The dies are fixed in their respective insert holder removably either by hooping or by means of keys. The two matrices 22 and 32 each comprise a stamping cavity and form between them, when they are placed one on the other, the volume of the part to be obtained. A suitable mechanism ensures the movement of the two door inserts, one towards the other. Piece P is struck and shaped in the die-in cavity. Columns 34 mounted on the upper insert door cooperate with bores 24 formed in the lower insert holder to ensure the centering of the two dies relative to each other.

L'outillage conforme à l'invention est représenté à la figure 2. Sur cette figure on voit deux matrices 122, 132, disposées l'une au dessus de l'autre : la matrice supérieure 132 au dessus de la matrice inférieure 122. Les deux matrices sont en forme de disque et gravées en surface d'une cavité annulaire 122a et 132a respectivement. Les deux cavités 122a et 132a sont coaxiales et définissent entre elles une cavité annulaire d'axe XX perpendiculaire au plan des disques de matrice. La cavité 122a-132a correspond à la forme de la pièce après qu'elle a été frappée entre les deux matrices.The tooling according to the invention is represented at figure 2 . In this figure we see two matrices 122, 132, arranged one above the other: the upper matrix 132 above the lower die 122. The two matrices are disk-shaped and etched on the surface of a cavity annular 122a and 132a respectively. The two cavities 122a and 132a are coaxial and define between them an annular cavity of axis XX perpendicular to the plane of the matrix disks. The cavity 122a-132a corresponds to the shape of the part after it has been struck between the two dies.

Les deux matrices sont alésées en leur centre. L'alésage 122b traversant de la matrice inférieure 122 est cylindrique d'axe XX de rayon R1 avec un élargissement 122c de rayon R2 >R1 dans sa partie inférieure.The two matrices are bored in their center. The bore 122b passing through the lower die 122 is cylindrical with an axis XX of radius R1 with a widening 122c of radius R2> R1 in its lower part.

L'alésage 132b traversant de la matrice supérieure est cylindrique d'axe XX de rayon R' légèrement supérieur à R. Sur la partie basse de la matrice, l'alésage comprend une portion évasée 132c formant cône de centrage.The bore 132b passing through the upper die is cylindrical with an axis XX of radius R 'slightly greater than R. On the lower part of the die, the bore comprises a flared portion 132c forming a centering cone.

Sur la figure, une colonne 140 est engagée dans l'alésage 122b. La colonne comprend une collerette 140a sur sa partie inférieure dont la forme correspond à la partie élargie 122c de la matrice inférieure. La colonne est de diamètre R et sa hauteur H est déterminée par le rebond attendu de la pièce frappée.In the figure, a column 140 is engaged in the bore 122b. The column comprises a flange 140a on its lower part whose shape corresponds to the enlarged portion 122c of the lower die. The column is of diameter R and its height H is determined by the expected rebound of the coin struck.

Le fonctionnement du pilon est le suivant. On a représenté sur la figure 3 la matrice inférieure 122 équipée de la colonne 140 et contenue dans son porte insert. La colonne 140 est maintenue en place par la collerette qui est immobilisée entre l'insert et le fond du porte insert.The operation of the pestle is as follows. We have shown on the figure 3 the lower die 122 equipped with the column 140 and contained in its insert door. The column 140 is held in place by the flange which is immobilized between the insert and the bottom of the insert door.

La matrice supérieure 132 est montée sur le porte insert supérieur en vis-à-vis de la matrice inférieure. Dans cette position, l'alésage 132b se situe dans le prolongement de la colonne 140. Le porte insert supérieur est équipé de colonnes 134 de guidage et de centrage qui coopèrent avec des alésages ménagés dans le porte insert supérieur. Ces colonnes ont pour fonction d'assurer un positionnement correct des deux matrices l'une par rapport à l'autre au moment de la frappe de la pièce.The upper die 132 is mounted on the upper insert door vis-à-vis the lower die. In this position, the bore 132b is located in the extension of the column 140. The upper insert door is equipped with guide and centering columns 134 which cooperate with bores formed in the upper insert holder. These columns have the function of ensuring correct positioning of the two matrices relative to each other at the time of coining the coin.

On place la pièce ébauche E sur la matrice inférieure dans la cavité 122a et on actionne le mécanisme de frappe. La matrice supérieure est entraînée contre la matrice inférieure. Lors du déplacement de la matrice supérieure, la partie saillante de la colonne est engagée dans l'alésage 132b. L'introduction de la colonne 140 dans l'alésage est facilitée par le cône de centrage. En outre le rayon de l'alésage de la matrice supérieure est suffisant par rapport à celui de la colonne pour éviter les frottements intempestifs.The blank piece E is placed on the lower die in the cavity 122a and the striking mechanism is actuated. The upper matrix is driven against the lower matrix. When moving the upper die, the projecting portion of the column is engaged in the bore 132b. The introduction of the column 140 into the bore is facilitated by the centering cone. In addition, the radius of the bore of the upper die is sufficient relative to that of the column to avoid unwanted friction.

La vitesse de déplacement de la matrice supérieure est de 1 à 2 m/s.The speed of displacement of the upper matrix is 1 to 2 m / s.

Par l'énergie appliquée, la pièce est mise à la forme des cavités 122a-132a. Dans le même mouvement la matrice est relevée et la pièce rebondit sur une certaine hauteur qui est fonction de l'énergie mécanique qui lui a été transférée. La pièce annulaire se déplace vers le haut et bascule sur un côté. Ce mouvement de basculement est arrêté par la partie saillante de la colonne. La pièce retombe dans la zone centrale de la matrice inférieure. Si la pièce n'est pas retombée dans la cavité annulaire 122a, l'opérateur peut aisément la manipuler pour la placer correctement sans risque. La hauteur de la colonne est suffisante pour que la pièce ne soit pas projetée par-dessus elle.By the applied energy, the piece is shaped to the cavities 122a-132a. In the same movement the matrix is raised and the piece bounces on a certain height which is a function of the mechanical energy that has been transferred to it. The annular piece moves upward and tilts to one side. This tilting movement is stopped by the projecting portion of the column. The coin falls back into the central area of the lower die. If the piece has not fallen back into the annular cavity 122a, the operator can easily manipulate it to place it correctly without risk. The height of the column is sufficient so that the piece is not projected over it.

Claims (10)

Outillage pour le matriçage au pilon d'une pièce annulaire comprenant un porte insert inférieur avec une matrice inférieure (122) coopérant avec un porte insert supérieur et une matrice supérieure (132), les deux matrices comprenant une cavité annulaire de matriçage (122a, 132a), caractérisé par le fait qu'il comprend un moyen de guidage de la pièce limitant ses déplacements latéraux lorsque celle-ci est soulevée depuis la matrice inférieure.Tooling for tamping with an annular piece comprising a lower insert holder with a lower die (122) cooperating with an upper insert holder and an upper die (132), the two die comprising an annular die cavity (122a, 132a) ), characterized in that it comprises a guide means of the workpiece limiting its lateral movements when the latter is raised from the lower die. Outillage selon la revendication précédente dont le moyen de guidage comprend une colonne (140) ménagée entre les deux matrices (122, 132) à l'intérieur de la couronne formée par la cavité annulaire (122a, 132a).Tooling according to the preceding claim, the guide means comprises a column (140) formed between the two dies (122, 132) inside the ring formed by the annular cavity (122a, 132a). Outillage selon la revendication précédente dont la colonne (140 est solidaire de la matrice inférieure (122).Tooling according to the preceding claim wherein the column (140 is integral with the lower die (122). Outillage selon la revendication précédente dont la matrice inférieure (122) comprend un alésage (122b), ménagé dans l'axe (XX) de la couronne formée par la cavité de matriçage (122a, 132a), dans lequel est logée la colonne (140).Tooling according to the preceding claim, the lower die (122) comprising a bore (122b), formed in the axis (XX) of the ring formed by the die-in cavity (122a, 132a), in which the column (140 ). Outillage selon la revendication précédente dont la colonne comprend une collerette (140a) de calage axial coopérant avec un logement ménagé dans la matrice inférieure.Tooling according to the preceding claim, the column comprises an collar (140a) of axial wedging cooperating with a recess in the lower die. Outillage selon l'une des revendications précédentes dont la hauteur de la colonne (140) est au moins égale à la hauteur de rebond de la pièce.Tooling according to one of the preceding claims, the height of the column (140) is at least equal to the bounce height of the workpiece. Outillage selon l'une des revendications 3 à 6 dont la matrice supérieure (132) comprend un alésage 132b) pour la réception de la partie saillante de la colonne (140).Tooling according to one of claims 3 to 6, the upper die (132) comprises a bore 132b) for receiving the projecting portion of the column (140). Outillage selon la revendication précédente dont l'alésage ménagé dans la matrice supérieure comprend un cône de centrage.Tooling according to the preceding claim, the bore formed in the upper die comprises a centering cone. Outillage selon l'une des revendications précédentes comprenant des colonnes de guidage entre le porte insert inférieur et le porte insert supérieur.Tooling according to one of the preceding claims comprising guide columns between the lower insert door and the upper insert door. Procédé de matriçage au pilon d'une pièce annulaire consistant à disposer un outillage dans le pilon selon l'une des revendications 1 à 9 puis à frapper la pièce au moyen de l'outillage.Method for punching an annular piece consisting of placing a tool in the pestle according to one of claims 1 to 9 and then striking the piece by means of the tooling.
EP20080158905 2007-06-25 2008-06-24 Forging die for hammering Active EP2011585B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0704546A FR2917653B1 (en) 2007-06-25 2007-06-25 TOOLS FOR PILON MATRIXING

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EP2011585A1 true EP2011585A1 (en) 2009-01-07
EP2011585B1 EP2011585B1 (en) 2011-01-19

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US (1) US8181501B2 (en)
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JP (1) JP5503849B2 (en)
CA (1) CA2634944C (en)
DE (1) DE602008004592D1 (en)
FR (1) FR2917653B1 (en)
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RU (1) RU2465977C2 (en)

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CN104325028A (en) * 2014-11-17 2015-02-04 贵州贵航汽车零部件股份有限公司 Static riveting device for producing automobile electrical appliance switch sealing part

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CN104226822A (en) * 2014-09-25 2014-12-24 哈尔滨汽轮机厂有限责任公司 Mold for forming hollow static blade flow guide core of light-weight gas turbine engine turbine
CN106001258A (en) * 2016-07-02 2016-10-12 安徽碧源环保工程有限公司 One-time forming hydraulic machine for mine tray
CN108748747A (en) * 2018-07-05 2018-11-06 深圳市喜钻珠宝科技有限公司 Jewelry efficient drilling device

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EP0163769A2 (en) * 1984-06-05 1985-12-11 The State Of Israel Ministry Of Defence Israel Military Industries A method and a machine for producing a metallic ring with specially contoured surfaces from a ring-shaped blank of selected cross-section
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DE10356269B3 (en) 2003-11-28 2005-04-07 Institut für Umformtechnik Universität Stuttgart Device for sealing the gap between workpiece parts moving relative to each other used in casting and thixoforming methods comprises a sealing element formed on one workpiece part in the form of a spring element

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CN104325028A (en) * 2014-11-17 2015-02-04 贵州贵航汽车零部件股份有限公司 Static riveting device for producing automobile electrical appliance switch sealing part

Also Published As

Publication number Publication date
IL192432A0 (en) 2009-02-11
RU2008125793A (en) 2009-12-27
FR2917653B1 (en) 2009-10-16
DE602008004592D1 (en) 2011-03-03
RU2465977C2 (en) 2012-11-10
JP2009006399A (en) 2009-01-15
CA2634944A1 (en) 2008-12-25
IL192432A (en) 2012-02-29
FR2917653A1 (en) 2008-12-26
US20090000452A1 (en) 2009-01-01
EP2011585B1 (en) 2011-01-19
JP5503849B2 (en) 2014-05-28
US8181501B2 (en) 2012-05-22
CA2634944C (en) 2015-01-20

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