EP0879656A1 - Device for making, by pressing a frustroconical hole in a metal strip material in particular, a lock casing - Google Patents

Device for making, by pressing a frustroconical hole in a metal strip material in particular, a lock casing Download PDF

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Publication number
EP0879656A1
EP0879656A1 EP98440095A EP98440095A EP0879656A1 EP 0879656 A1 EP0879656 A1 EP 0879656A1 EP 98440095 A EP98440095 A EP 98440095A EP 98440095 A EP98440095 A EP 98440095A EP 0879656 A1 EP0879656 A1 EP 0879656A1
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EP
European Patent Office
Prior art keywords
headrest
orifice
strip material
punch
frustoconical
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
EP98440095A
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German (de)
French (fr)
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EP0879656B1 (en
Inventor
Roland Sinteff
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Ferco International Usine de Ferrures de Batiment
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Ferco International Usine de Ferrures de Batiment
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Publication of EP0879656A1 publication Critical patent/EP0879656A1/en
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Publication of EP0879656B1 publication Critical patent/EP0879656B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/04—Stamping using rigid devices or tools for dimpling

Definitions

  • the invention relates to a tool for shaping by stamping of a frustoconical mouth opening in a metallic strip material intended in particular for design of a locking fitting faceplate or the like for door, window or other, comprising at least one punch and one matrix.
  • the invention also relates to a headrest comprising at least one orifice with a frustoconical mouth shaped by stamping using this tool.
  • the present invention relates, more particularly, to the field of hardware of the building.
  • a headrest intended to house the organs of the locking, in particular an operating rod coming lodge, for example, in a groove made at the periphery of a opening corresponding to a door, window or the like.
  • organs fixing such as screws
  • the screws usually used are of the countersunk head type, which comes to be housed in the frustoconical mouth of the screw passage opening present in the headrest.
  • this process consists in making in this material by strip, first of all, an orifice whose section is slightly greater than that which it must ultimately have. Then at during a second operation, we come to realize the mouth frustoconical by means of an appropriately shaped punch leading to material creep at the bottom of the orifice direction of the axis of the latter, whose section becomes, from suddenly, more reduced.
  • This creep of the material is controlled by means a matrix comprising, on its upper face, a crown circular having a triangular section whose apex is directed towards the underside of the strip material to be shaped and which defines, during the stamping operation, a circular groove concentric with the orifice on this face lower of said strip material.
  • the present invention is intended to respond to the problems aforementioned through a tool for controlling, perfectly, the creep of the metal during the drawing, in a single operation, from a frustoconical mouth opening in a strip material, such as a headrest.
  • the invention further relates to a headrest including locking fitting or the like formed by stamping using the tools according to the invention.
  • This headrest comprising at least one orifice with a frustoconical mouth is characterized in that it comprises on its rear face and in edge of the hole a boss which is located with the axis of said orifice in alignment parallel to the longitudinal axis of said headrest.
  • the inventive step corresponding to the present invention results from the fact that one comes to control the creep of the metal so that it defines, on the face back of the headrest, a boss which ultimately does not interfere with no way the displacement of a possible rod of maneuver sheltered by this headrest.
  • said rod necessarily comprises, an oblong opening allowing the passage of said screw fixing, while allowing the free movement of this rod. Consequently, this boss agrees with this oblong opening in the rod and can, in a certain measure, improve the axial guidance of the latter.
  • the present invention relates to a tool 1 for shaping by stamping an orifice 2 with a frustoconical mouth 3 in strip metal material 4 for design, plus particularly, of a headrest 5 of locking fitting or analogous for door, window or other.
  • such a headrest 5 very often comes lodge in a notch or in a groove made in rebate of an opening, or in some cases of a frame sleeping, from such a door or window. Maintaining a position of this headrest 5 is usually provided by organs fastening, of the countersunk screw type, through, specifically, an orifice 2 formed in said headrest 5 for come and stay in the carpentry, whether it is wooden, synthetic or metallic type.
  • the orifices 2 formed in this headrest includes a mouth 3 of frustoconical shape for receiving the milled heads of the screws.
  • this rod operation 7 comprises oblong openings 8 allowing, precisely, the passage of these fasteners, while allowing free movement of said operating rod 7.
  • tool 1 more particularly intended for shaping by stamping of such a port 2 with a mouthpiece frustoconical 3, it includes at least one punch 9 and a matrix 10.
  • the punch 9 comprises a part cylindrical 11 of diameter 12 adjusted to the diameter 13 of the orifice 2 to be formed in the strip material 4, plus particularly in the headrest 5.
  • This cylindrical part 11 constitutes the extension of a frustoconical part 14 of form suitable for the design by stamping the mouthpiece tapered 3.
  • this has a bore 15 of section 16 adjusted to that of the cylindrical part 11 of the punch 9, this bore 15 having, at its wall 17, at least one groove 18 emerging at least on the face upper 19 of the matrix 10 opposite said material in strip 4 to be shaped.
  • axis 20 of the bore 15 and the groove or grooves 18 are located in a alignment 21 substantially parallel to the longitudinal axis 22 of the strip material 4.
  • the matrix 10 includes at least two grooves 18, 18A formed so diametrically opposite at the level of the wall 17 of the bore 15.
  • the axis 20 of the bore 15 and the grooves 18, 18A of the matrix 10 are located in a corresponding alignment, substantially, in the longitudinal median plane of this headrest 5 when it is placed at the level of tool 1.
  • the shaping operation by stamping of an orifice 2 with a frustoconical mouth 3 can be carried out in a single stamping pass, insofar as the punch 9 makes it possible to simultaneously define the orifice 2 in its final dimensions and said frustoconical mouth 3.
  • the creep of the metal resulting from the punching of this frustoconical mouth 3 is perfectly controlled and content through the matrix 10.
  • this creep of the material comes to define bosses 23, 23A at the level of the rear face 24 of the strip material 4, more particularly of the headrest 5.
  • bosses 23, 23A defined on the rear face 24 of the headrest 5 are located on the edge of orifice 2, more particularly on either side of this last, in the longitudinal axis 22 of this headrest 5.
  • these bosses 23, 23A necessarily agree with an oblong opening 8 of an operating rod 7 possibly sheltered by this headrest 5 and does not interfere, in no measurement, the displacement of this operating rod 7.
  • these bosses 23, 23A contribute, to a better axial guidance of this operating rod 7 relative to the headrest 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Punching Or Piercing (AREA)
  • Connection Of Plates (AREA)

Abstract

Tooling for press shaping a hole (2) with a truncated mouth (3) in a metal strip (4), comprising at least one punch (9) and a die (10) with the following characteristics: a) the punch (9) incorporates a cylindrical part (11) of diameter (12) adjusted to that (13) of the hole (2) to be cut in the strip (4). This cylindrical part (11) makes up the extension of a truncated part (14) by pressing of the truncated opening (3); b) the die (10) incorporates a boring (15) with its section (16) adjusted to that of the cylindrical part (11) of the punch (9). The boring (15) presents, at the level of its wall (17), at least one groove (18, 18A) emerging in the upper face (19) of the die (10), facing the strip (4) to be shaped. These grooves (18, 18A) and the axis (20) of the boring (15) are aligned (21) essentially parallel to the longitudinal axis (22) of the strip (4) during shaping. Also claimed is a headstall produced by this tooling equipment.

Description

L'invention concerne un outillage pour le façonnage par emboutissage d'un orifice à embouchure tronconique dans un matériau métallique en bande destiné notamment à la conception d'une têtière de ferrure de verrouillage ou analogue pour porte, fenêtre ou autre, comprenant au moins un poinçon et une matrice. L'invention concerne, également, une têtière comprenant au moins un orifice à embouchure tronconique façonnée par emboutissage au moyen de cet outillage.The invention relates to a tool for shaping by stamping of a frustoconical mouth opening in a metallic strip material intended in particular for design of a locking fitting faceplate or the like for door, window or other, comprising at least one punch and one matrix. The invention also relates to a headrest comprising at least one orifice with a frustoconical mouth shaped by stamping using this tool.

Tel que cela apparaít ci-dessus, la présente invention concerne, plus particulièrement, le domaine de la quincaillerie du bâtiment.As it appears above, the present invention relates, more particularly, to the field of hardware of the building.

De nombreuses ferrures, notamment de verrouillage, comportent, une têtière destinée à abriter les organes du mécanisme de verrouillage, notamment une tringle de manoeuvre venant se loger, par exemple, dans une rainure ménagée en périphérie d'un ouvrant correspondant à une porte, fenêtre ou analogue. De telles têtières sont maintenues en position à l'aide d'organes de fixation, tels que des vis, venant traverser ladite têtière pour venir se loger dans la menuiserie en passant, le cas échéant, au travers d'une ouverture oblongue ménagée dans une tringle de manoeuvre.Many fittings, in particular of locking, comprise, a headrest intended to house the organs of the locking, in particular an operating rod coming lodge, for example, in a groove made at the periphery of a opening corresponding to a door, window or the like. Of such headrests are held in position by means of organs fixing, such as screws, coming through said headrest to come and stay in the carpentry by the way, the case if necessary, through an oblong opening in a operating rod.

De manière à ne pas créer, au niveau de la face apparente externe de ladite têtière, un obstacle susceptible de gêner la manoeuvre de l'ouvrant ou encore qui nécessiterait une augmentation du jeu au niveau de la feuillure de cet ouvrant par rapport au cadre dormant, les vis habituellement utilisées sont du type à tête fraisée, celle-ci venant se loger dans l'embouchure tronconique de l'orifice de passage de la vis présent dans la têtière.So as not to create, at the level of the visible face external of said headrest, an obstacle liable to hinder the opening operation or which would require a increased clearance at the rebate of this opening compared to the frame, the screws usually used are of the countersunk head type, which comes to be housed in the frustoconical mouth of the screw passage opening present in the headrest.

En conséquence, lors du façonnage de cette têtière il convient de réaliser, le long de cette dernière, plusieurs de ces orifices à embouchure tronconique ce qui pose problème, actuellement, sachant que l'on doit se placer dans des conditions de fabrication à cadence élevée. Ainsi, la solution d'usinage sous forme d'un perçage suivi d'un fraisage n'est absolument pas adaptée à de telles cadences de production. En fait, de telles têtières sont façonnées, usuellement, par emboutissage, solution bien plus adaptée au cas d'espèce. Cependant, l'emboutissage d'un matériau en bande de faible largeur et d'épaisseur réduite est une opération délicate à mener et entraíne souvent des problèmes de déformation, tout particulièrement lorsque l'usinage à réaliser ne consiste pas en une simple opération de suppression de matière par découpage.Consequently, during the shaping of this headrest it is advisable to realize, along the latter, several of these orifices with frustoconical mouth which is problematic, currently, knowing that we have to place ourselves in high rate manufacturing conditions. So the solution machining in the form of a hole followed by a milling is not absolutely not suited to such production rates. In fact, such headrests are usually shaped by stamping, a solution much more suited to the present case. However, stamping a low strip material width and reduced thickness is a delicate operation to often lead and cause deformation problems, everything especially when the machining to be performed does not consist in a simple material removal operation by cutting.

A titre d'exemple si aucune difficulté ne se pose pour la réalisation d'un orifice dans une têtière car cela se traduit, précisément, par une simple suppression de matière, l'aménagement d'une embouchure de type tronconique au niveau de cet orifice conduit à un fluage du matériau, d'où, souvent, une modification des côtes externes de la têtière. Ainsi, si l'on ne contient pas ce fluage du matériau la têtière se voit de largeur légèrement accrue à hauteur d'un orifice à embouchure tronconique découlant d'un procédé d'emboutissage. Finalement cela peut conduire à des difficultés de montage de cette têtière.For example, if no difficulty arises for the realization of an orifice in a headrest as this translates, specifically, by simply removing matter, the fitting of a frustoconical mouthpiece at the level of this orifice leads to a creep of the material, where, often, a modification of the external ribs of the headrest. So if we does not contain this creep of the material the headrest is visible slightly increased width at a mouth opening frustoconical resulting from a stamping process. Finally this can lead to difficulties in mounting this headrest.

On a déjà imaginé un procédé, notamment décrit dans le document FR-A-2.308.440, à même d'assurer le contrôle du fluage du matériau résultant, tout particulièrement, de la conception par emboutissage, de l'embouchure de forme tronconique correspondant à un orifice ménagé, préalablement, dans un matériau en bande de faible largeur et d'épaisseur réduite.We have already imagined a process, notably described in the document FR-A-2.308.440, capable of controlling the creep of the material resulting, in particular, from the design by stamping, frustoconical mouthpiece corresponding to an orifice previously made in a strip material of small width and reduced thickness.

En fait, ce procédé consiste à réaliser dans ce matériau en bande, tout d'abord, un orifice dont la section est légèrement supérieure à celle qu'il doit avoir en définitive. Puis, au cours d'une seconde opération, l'on vient réaliser l'embouchure tronconique au moyen d'un poinçon de forme adaptée conduisant à un fluage du matériau à la partie inférieure de l'orifice en direction de l'axe de ce dernier, dont la section devient, du coup, plus réduite. Ce fluage du matériau est contrôlé au moyen d'une matrice comportant, sur sa face supérieure, une couronne circulaire ayant une section triangulaire dont le sommet est dirigé vers la face inférieure du matériau en bande à façonner et qui vient définir, au cours de l'opération d'emboutissage, une rainure circulaire concentrique à l'orifice sur cette face inférieure dudit matériau en bande.In fact, this process consists in making in this material by strip, first of all, an orifice whose section is slightly greater than that which it must ultimately have. Then at during a second operation, we come to realize the mouth frustoconical by means of an appropriately shaped punch leading to material creep at the bottom of the orifice direction of the axis of the latter, whose section becomes, from suddenly, more reduced. This creep of the material is controlled by means a matrix comprising, on its upper face, a crown circular having a triangular section whose apex is directed towards the underside of the strip material to be shaped and which defines, during the stamping operation, a circular groove concentric with the orifice on this face lower of said strip material.

Comme cela ressort de la description précédente, ce procédé présente l'inconvénient en ce que l'on est dans l'obligation d'opérer en deux étapes, ce qui engendre, bien sûr, une perte de temps appliqué à des têtières de ferrures de type verrouillage ou autre, cela se traduit par une cadence de production limitée.As appears from the preceding description, this process has the disadvantage that you have to to operate in two stages, which leads, of course, to a loss of time applied to type faceplates lock or whatever, this results in a cadence of limited production.

En outre, l'on observera que la section finale de l'orifice est dépendante de l'épaisseur du matériau en bande, ceci à supposer que la course du poinçon de forme tronconique correspond à une donnée invariable. Aussi, l'on comprend qu'il est impossible d'ajuster, avec précision, cette section de l'orifice destiné au passage de la vis de fixation.In addition, it will be observed that the final section of the orifice is dependent on the thickness of the strip material, this assuming that the stroke of the frustoconical punch corresponds to a invariable data. Also, we understand that it is impossible to adjust, with precision, this section of the orifice intended when the fixing screw passes.

La présente invention se veut à même de répondre aux problèmes précités au travers d'un outillage permettant de contrôler, parfaitement, le fluage du métal au cours de l'emboutissage, en une seule opération, d'un orifice à embouchure tronconique dans un matériau en bande, tel qu'une têtière.The present invention is intended to respond to the problems aforementioned through a tool for controlling, perfectly, the creep of the metal during the drawing, in a single operation, from a frustoconical mouth opening in a strip material, such as a headrest.

A cet effet, l'invention concerne un outillage pour le façonnage par emboutissage d'un orifice à embouchure tronconique dans un matériau métallique en bande destiné notamment à la conception d'une têtière de ferrure de verrouillage ou analogue pour porte, fenêtre ou autre, comprenant au moins un poinçon et une matrice, caractérisé par le fait que :

  • ledit poinçon comporte une partie cylindrique de diamètre ajusté au diamètre de l'orifice à ménager dans le matériau en bande, cette partie cylindrique constituant le prolongement d'une partie tronconique de forme adaptée à la conception par emboutissage de l'embouchure de forme tronconique ;
  • la matrice comporte un alésage de section ajustée à celui de la partie cylindrique du poinçon, cet alésage présentant au niveau de sa paroi au moins une rainure, débouchante sur la face supérieure de cette matrice en regard du matériau en bande, cette ou ces rainures et l'axe de l'alésage se situant dans un alignement sensiblement parallèle à l'axe longitudinal dudit matériau en bande lors du façonnage de ce dernier.
To this end, the invention relates to a tool for shaping by stamping an orifice with a frustoconical mouthpiece in a metallic strip material intended in particular for the design of a faceplate of locking fitting or the like for door, window or other, comprising at least one punch and a die, characterized in that:
  • said punch comprises a cylindrical part of diameter adjusted to the diameter of the orifice to be formed in the strip material, this cylindrical part constituting the extension of a frustoconical part of shape adapted to the design by stamping of the frustoconical mouthpiece;
  • the matrix has a bore of cross-section adjusted to that of the cylindrical part of the punch, this bore having at its wall at least one groove, opening out on the upper face of this matrix opposite the strip material, this or these grooves and the axis of the bore lying in an alignment substantially parallel to the longitudinal axis of said strip material during the shaping of the latter.

L'invention concerne, en outre, une têtière notamment de ferrure de verrouillage ou analogue façonnée par emboutissage à l'aide de l'outillage conforme à l'invention. Cette têtière comportant au moins un orifice à embouchure tronconique est caractérisée en ce qu'elle comporte sur sa face arrière et en bordure de l'orifice un bossage lequel se situe avec l'axe dudit orifice dans un alignement parallèle à l'axe longitudinal de ladite têtière. The invention further relates to a headrest including locking fitting or the like formed by stamping using the tools according to the invention. This headrest comprising at least one orifice with a frustoconical mouth is characterized in that it comprises on its rear face and in edge of the hole a boss which is located with the axis of said orifice in alignment parallel to the longitudinal axis of said headrest.

Finalement, on observera que le pas inventif correspondant à la présente invention résulte du fait que l'on vient contrôler le fluage du métal de manière que celui-ci définisse, sur la face arrière de la têtière, un bossage qui, finalement, ne gêne en aucune manière le déplacement d'une éventuelle tringle de manoeuvre abritée par cette têtière. En effet, au droit de l'orifice à embouchure tronconique destiné au passage de l'organe de fixation, ladite tringle comporte, nécessairement, une ouverture oblongue autorisant le passage de ladite vis de fixation, tout en permettant le libre déplacement de cette tringle. En conséquence, ce bossage concorde avec cette ouverture oblongue dans la tringle et peut, dans une certaine mesure, améliorer le guidage axial de cette dernière.Finally, it will be observed that the inventive step corresponding to the present invention results from the fact that one comes to control the creep of the metal so that it defines, on the face back of the headrest, a boss which ultimately does not interfere with no way the displacement of a possible rod of maneuver sheltered by this headrest. Indeed, the right to the orifice with a frustoconical mouth intended for the passage of the fixing member, said rod necessarily comprises, an oblong opening allowing the passage of said screw fixing, while allowing the free movement of this rod. Consequently, this boss agrees with this oblong opening in the rod and can, in a certain measure, improve the axial guidance of the latter.

L'invention sera mieux comprise à la lecture de la description qui va suivre se rapportant à un exemple de réalisation représenté dans le dessin en annexe.

  • la figure 1 représente, de manière schématisée et en élévation, l'outillage conforme à l'invention, comprenant un poinçon et une matrice entre lesquels est représenté, de manière schématisée et en traits discontinus, un matériau en bande, notamment une têtière, comprenant un orifice à embouchure tronconique obtenu par emboutissage au moyen de cet outillage ;
  • la figure 2 est une vue schématisée et de dessus de la matrice ;
  • la figure 3 est une vue schématisée et en coupe d'une têtière, conforme à l'invention, abritant une tringle de manoeuvre ;
  • la figure 4 est une vue schématisée et de dessous de la figure 3.
The invention will be better understood on reading the following description relating to an exemplary embodiment shown in the accompanying drawing.
  • Figure 1 shows, schematically and in elevation, the tool according to the invention, comprising a punch and a die between which is shown, schematically and in broken lines, a strip material, in particular a headrest, comprising a frustoconical mouth opening obtained by stamping using this tool;
  • Figure 2 is a schematic top view of the matrix;
  • Figure 3 is a schematic sectional view of a headrest, according to the invention, housing an operating rod;
  • FIG. 4 is a schematic view from below of FIG. 3.

Tel que cela apparaít dans les figures du dessin ci-joint, la présente invention a trait à un outillage 1 pour le façonnage par emboutissage d'un orifice 2 à embouchure 3 tronconique dans un matériau métallique en bande 4 destiné à la conception, plus particulièrement, d'une têtière 5 de ferrure de verrouillage ou analogue pour porte, fenêtre ou autre.As it appears in the figures of the attached drawing, the present invention relates to a tool 1 for shaping by stamping an orifice 2 with a frustoconical mouth 3 in strip metal material 4 for design, plus particularly, of a headrest 5 of locking fitting or analogous for door, window or other.

A ce propos, une telle têtière 5 vient, très fréquemment, se loger dans un entaillage ou dans une rainure ménagée en feuillure d'un ouvrant, voire dans certains cas, d'un cadre dormant, d'une telle porte ou fenêtre. Le maintien en position de cette têtière 5 est assuré, habituellement, par des organes de fixation, du type vis à tête fraisée, traversant, précisément, un orifice 2 ménagé dans ladite têtière 5 pour venir se loger dans la menuiserie, que celle-ci soit en bois, en matière synthétique ou de type métallique. Pour éviter que ces organes de fixation ne soient saillants par rapport à la face avant 6 de ladite têtière 5, les orifices 2 ménagés dans cette têtière comportent une embouchure 3 de forme tronconique pour la réception des têtes fraisées des vis.In this connection, such a headrest 5 very often comes lodge in a notch or in a groove made in rebate of an opening, or in some cases of a frame sleeping, from such a door or window. Maintaining a position of this headrest 5 is usually provided by organs fastening, of the countersunk screw type, through, specifically, an orifice 2 formed in said headrest 5 for come and stay in the carpentry, whether it is wooden, synthetic or metallic type. To prevent these fasteners are not protruding from the front face 6 of said faceplate 5, the orifices 2 formed in this headrest includes a mouth 3 of frustoconical shape for receiving the milled heads of the screws.

A noter, en outre, qu'une telle têtière 5 est amenée, usuellement, à abriter une tringle de manoeuvre 7 apte à se déplacer dans la rainure ou dans l'entaillage présent dans cette menuiserie et refermée par la têtière 5. Aussi au droit des organes de fixation de cette dernière, cette tringle de manoeuvre 7 comporte des ouvertures oblongues 8 autorisant, précisément, le passage de ces organes de fixation, tout en permettant un libre déplacement de ladite tringle de manoeuvre 7.Note, moreover, that such a headrest 5 is brought, usually to house an operating rod 7 capable of move in the groove or in the notch present in this carpentry and closed by the headrest 5. Also on the right fasteners for the latter, this rod operation 7 comprises oblong openings 8 allowing, precisely, the passage of these fasteners, while allowing free movement of said operating rod 7.

Quant à l'outillage 1 plus particulièrement destiné au façonnage par emboutissage d'un tel orifice 2 à embouchure tronconique 3, il comprend au moins un poinçon 9 et une matrice 10.As for tool 1, more particularly intended for shaping by stamping of such a port 2 with a mouthpiece frustoconical 3, it includes at least one punch 9 and a matrix 10.

En fait, selon l'invention, le poinçon 9 comporte une partie cylindrique 11 de diamètre 12 ajusté au diamètre 13 de l'orifice 2 à ménager dans le matériau en bande 4, plus particulièrement dans la têtière 5. Cette partie cylindrique 11 constitue le prolongement d'une partie tronconique 14 de forme adaptée à la conception par emboutissage de l'embouchure tronconique 3.In fact, according to the invention, the punch 9 comprises a part cylindrical 11 of diameter 12 adjusted to the diameter 13 of the orifice 2 to be formed in the strip material 4, plus particularly in the headrest 5. This cylindrical part 11 constitutes the extension of a frustoconical part 14 of form suitable for the design by stamping the mouthpiece tapered 3.

Quant à la matrice 10, celle-ci comporte un alésage 15 de section 16 ajustée à celle de la partie cylindrique 11 du poinçon 9, cet alésage 15 présentant, au niveau de sa paroi 17, au moins une rainure 18 débouchante au moins sur la face supérieure 19 de la matrice 10 en regard dudit matériau en bande 4 à façonner. A noter, plus particulièrement que l'axe 20 de l'alésage 15 et la ou les rainures 18 se situent dans un alignement 21 sensiblement parallèle à l'axe longitudinal 22 du matériau en bande 4.As for the die 10, this has a bore 15 of section 16 adjusted to that of the cylindrical part 11 of the punch 9, this bore 15 having, at its wall 17, at least one groove 18 emerging at least on the face upper 19 of the matrix 10 opposite said material in strip 4 to be shaped. Note, more particularly that axis 20 of the bore 15 and the groove or grooves 18 are located in a alignment 21 substantially parallel to the longitudinal axis 22 of the strip material 4.

Telle que représentée dans la figure 2, la matrice 10 comporte au moins deux rainures 18, 18A ménagées de manière diamétralement opposées au niveau de la paroi 17 de l'alésage 15.As shown in Figure 2, the matrix 10 includes at least two grooves 18, 18A formed so diametrically opposite at the level of the wall 17 of the bore 15.

En outre, s'agissant plus particulièrement d'une têtière 5 à façonner, l'axe 20 de l'alésage 15 et les rainures 18, 18A de la matrice 10 se situent dans un alignement correspondant, sensiblement, au plan médian longitudinal de cette têtière 5 lorsque celle-ci vient se placer au niveau de l'outillage 1.In addition, being more particularly a headrest 5 to shape, the axis 20 of the bore 15 and the grooves 18, 18A of the matrix 10 are located in a corresponding alignment, substantially, in the longitudinal median plane of this headrest 5 when it is placed at the level of tool 1.

Finalement, grâce à ce dernier, l'opération de façonnage par emboutissage d'un orifice 2 à embouchure tronconique 3 peut être menée en une seule passe d'emboutissage, dans la mesure où le poinçon 9 permet de définir, simultanément, l'orifice 2 dans ses dimensions définitives et ladite embouchure tronconique 3. A ce propos le fluage du métal résultant du poinçonnage de cette embouchure tronconique 3 est parfaitement contrôlé et contenu au travers de la matrice 10. En effet, grâce aux rainures 18, 18A présentes dans cette matrice 10, ce fluage de la matière vient définir des bossages 23, 23A au niveau de la face arrière 24 du matériau en bande 4, plus particulièrement de la têtière 5.Finally, thanks to the latter, the shaping operation by stamping of an orifice 2 with a frustoconical mouth 3 can be carried out in a single stamping pass, insofar as the punch 9 makes it possible to simultaneously define the orifice 2 in its final dimensions and said frustoconical mouth 3. In this regard the creep of the metal resulting from the punching of this frustoconical mouth 3 is perfectly controlled and content through the matrix 10. Indeed, thanks to grooves 18, 18A present in this matrix 10, this creep of the material comes to define bosses 23, 23A at the level of the rear face 24 of the strip material 4, more particularly of the headrest 5.

Par ailleurs, grâce à une disposition judicieuse de ces rainures 18, 18A au niveau de la matrice 10, ceci par rapport au matériau en bande 4, les bossages 23, 23A définis sur la face arrière 24 de la têtière 5, se situent en bordure de l'orifice 2, plus particulièrement de part et d'autre de ce dernier, dans l'axe longitudinal 22 de cette têtière 5. En conséquence, ces bossages 23, 23A concordent nécessairement avec une ouverture oblongue 8 d'une tringle de manoeuvre 7 éventuellement abritée par cette têtière 5 et ne gênent, en aucune mesure, le déplacement de cette tringle de manoeuvre 7. Au contraire, ces bossages 23, 23A contribuent, à un meilleur guidage axial de cette tringle de manoeuvre 7 par rapport à la têtière 5.Furthermore, thanks to a judicious arrangement of these grooves 18, 18A at the level of the die 10, this with respect to to the strip material 4, the bosses 23, 23A defined on the rear face 24 of the headrest 5, are located on the edge of orifice 2, more particularly on either side of this last, in the longitudinal axis 22 of this headrest 5. In consequence, these bosses 23, 23A necessarily agree with an oblong opening 8 of an operating rod 7 possibly sheltered by this headrest 5 and does not interfere, in no measurement, the displacement of this operating rod 7. On the contrary, these bosses 23, 23A contribute, to a better axial guidance of this operating rod 7 relative to the headrest 5.

Claims (4)

Outillage pour le façonnage par emboutissage d'un orifice (2) à embouchure tronconique (3) dans un matériau métallique en bande (4), notamment destiné à la conception d'une têtière (5) de ferrure de verrouillage ou analogue pour porte, fenêtre ou autre, comprenant au moins un poinçon (9) et une matrice (10), caractérisé par le fait que : ledit poinçon (9) comporte une partie cylindrique (11) de diamètre (12) ajusté au diamètre (13) de l'orifice (2) à ménager dans le matériau en bande (4), cette partie cylindrique (11) constituant le prolongement d'une partie tronconique (14) de forme adaptée à la conception par emboutissage de l'embouchure tronconique (3) ; la matrice (10) comporte un alésage (15) de section (16) ajustée à celle de la partie cylindrique (11) du poinçon (9), cet alésage (15) présentant au niveau de sa paroi (17) au moins une rainure (18, 18A), débouchante sur la face supérieure (19) de cette matrice (10), en regard du matériau en bande (4) à façonner, cette ou ces rainures (18, 18A) et l'axe (20) de l'alésage (15) se situant dans un alignement (21) sensiblement parallèle à l'axe longitudinal (22) dudit matériau en bande (4) lors du façonnage de ce dernier. Tools for shaping by stamping an orifice (2) with frustoconical mouth (3) in a metallic strip material (4), in particular intended for the design of a headrest (5) of locking fitting or the like for a door, window or other, comprising at least one punch (9) and a matrix (10), characterized in that: said punch (9) comprises a cylindrical part (11) of diameter (12) adjusted to the diameter (13) of the orifice (2) to be formed in the strip material (4), this cylindrical part (11) constituting the extension a frustoconical part (14) of a shape adapted to the design by stamping of the frustoconical mouthpiece (3); the die (10) has a bore (15) of section (16) adjusted to that of the cylindrical part (11) of the punch (9), this bore (15) having at least on its wall (17) a groove (18, 18A), emerging on the upper face (19) of this matrix (10), facing the strip material (4) to be shaped, this or these grooves (18, 18A) and the axis (20) of the bore (15) being located in an alignment (21) substantially parallel to the longitudinal axis (22) of said strip material (4) during the shaping of the latter. Outillage selon la revendication 1, caractérisé par le fait que la matrice (10) comporte, au niveau de la paroi (17) de l'alésage (15), au moins deux rainures (18, 18A) disposées de manière diamétralement opposée.Tool according to claim 1, characterized by the fact that the matrix (10) comprises, at the level of the wall (17) of the bore (15), at least two grooves (18, 18A) arranged in diametrically opposite way. Outillage selon l'une quelconque des revendications précédentes, caractérisé par le fait que l'axe (20) de l'alésage (15) dans la matrice (10) et les rainures (18, 18A) se situent dans le plan médian longitudinal du matériau en bande (4) lors du façonnage de ce dernier.Tool according to any one of the claims above, characterized in that the axis (20) of the bore (15) in the die (10) and the grooves (18, 18A) lie in the longitudinal median plane of the material in strip (4) during the shaping of the latter. Têtière (5) de ferrure de verrouillage ou analogue pour porte, fenêtre ou autre comprenant au moins un orifice (2) à embouchure tronconique (3) façonné par emboutissage à l'aide d'un outillage conforme aux revendications 1 à 3, caractérisée par le fait qu'elle comporte au niveau de sa face arrière (24) et en bordure de l'orifice (2) au moins un bossage (23, 23A) disposé avec l'axe (20) dudit orifice (2) dans l'axe longitudinal (22) de cette têtière (5).Locking headrest (5) or the like for door, window or other comprising at least one orifice (2) to frustoconical mouthpiece (3) shaped by stamping using a tool according to claims 1 to 3, characterized by the fact that it comprises at its rear face (24) and at the edge of the orifice (2) at least one boss (23, 23A) disposed with the axis (20) of said orifice (2) in the axis longitudinal (22) of this headrest (5).
EP98440095A 1997-05-20 1998-05-12 Device for making, by pressing a frustroconical hole in a metal strip material in particular, a lock casing Expired - Lifetime EP0879656B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9706280A FR2763522B1 (en) 1997-05-20 1997-05-20 TOOLS FOR SHAPING BY STAMPING OF AN ORIFICE WITH A TRUNCONIC MOUTH IN A STRIP METAL MATERIAL, IN PARTICULAR A HEADER
FR9706280 1997-05-20

Publications (2)

Publication Number Publication Date
EP0879656A1 true EP0879656A1 (en) 1998-11-25
EP0879656B1 EP0879656B1 (en) 1999-10-13

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EP98440095A Expired - Lifetime EP0879656B1 (en) 1997-05-20 1998-05-12 Device for making, by pressing a frustroconical hole in a metal strip material in particular, a lock casing

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Country Link
US (1) US5927137A (en)
EP (1) EP0879656B1 (en)
CA (1) CA2237792C (en)
DE (1) DE69800028T2 (en)
FR (1) FR2763522B1 (en)

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DE102014103975A1 (en) 2014-03-24 2015-09-24 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Method, punching tool and leveling tool for the production of countersunk holes in a plate-shaped material

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KR100441047B1 (en) * 2002-01-10 2004-07-21 주식회사 신성엔지니어링 Method for processing a orifice Hole on the orifice for Gas Absorption Chiller and Heater
US7308814B2 (en) * 2005-10-13 2007-12-18 Gassner Ges.M.B.H. & Co Kg Method for perforating a sheet
US9643230B2 (en) 2013-03-14 2017-05-09 A.K. Stamping Company, Inc. Grounding spacer
CN106623614B (en) * 2016-12-30 2018-11-16 上海伟奕传动轴配件有限公司 A kind of transmission axis hole molding die
DE102019008178A1 (en) 2019-11-25 2020-08-06 Daimler Ag Front wall for a motor vehicle, screw connection and method for producing a screw connection
US20210196319A1 (en) * 2019-12-29 2021-07-01 Biosense Webster (Israel) Ltd Trocar with internal camera providing tilted view angle

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FR2308440A1 (en) * 1975-04-21 1976-11-19 Ferco Int Usine Ferrures Countersink for sheet metal circular holes - has oversize pilot hole drilled or punched and countersink produced by deforming hole edges
GB2086786A (en) * 1980-11-08 1982-05-19 Behrens Ag C Apparatus for flanging the edges of holes in workpieces on a piercing press
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Publication number Priority date Publication date Assignee Title
DE102014103975A1 (en) 2014-03-24 2015-09-24 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Method, punching tool and leveling tool for the production of countersunk holes in a plate-shaped material
EP2923778A2 (en) 2014-03-24 2015-09-30 TRUMPF Werkzeugmaschinen GmbH + Co. KG Method for the manufacturing holes with a countersink in a plate-like material
EP2923778A3 (en) * 2014-03-24 2016-03-16 TRUMPF Werkzeugmaschinen GmbH + Co. KG Method for the manufacturing holes with a countersink in a plate-like material
DE102014103975B4 (en) 2014-03-24 2018-12-20 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Method, punching tool and leveling tool for the production of countersunk holes in a plate-shaped material

Also Published As

Publication number Publication date
FR2763522A1 (en) 1998-11-27
CA2237792A1 (en) 1998-11-20
CA2237792C (en) 2002-04-30
US5927137A (en) 1999-07-27
EP0879656B1 (en) 1999-10-13
DE69800028D1 (en) 1999-11-18
DE69800028T2 (en) 2000-04-20
FR2763522B1 (en) 1999-07-23

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