EP3253509B1 - Procédé et dispositif pour réaliser un rebord au niveau d'une pièce - Google Patents

Procédé et dispositif pour réaliser un rebord au niveau d'une pièce Download PDF

Info

Publication number
EP3253509B1
EP3253509B1 EP16702528.7A EP16702528A EP3253509B1 EP 3253509 B1 EP3253509 B1 EP 3253509B1 EP 16702528 A EP16702528 A EP 16702528A EP 3253509 B1 EP3253509 B1 EP 3253509B1
Authority
EP
European Patent Office
Prior art keywords
region
collar
workpiece
die
drawn
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.)
Active
Application number
EP16702528.7A
Other languages
German (de)
English (en)
Other versions
EP3253509A1 (fr
Inventor
Thomas Flehmig
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.)
ThyssenKrupp Steel Europe AG
ThyssenKrupp AG
Original Assignee
ThyssenKrupp Steel Europe AG
ThyssenKrupp AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ThyssenKrupp Steel Europe AG, ThyssenKrupp AG filed Critical ThyssenKrupp Steel Europe AG
Publication of EP3253509A1 publication Critical patent/EP3253509A1/fr
Application granted granted Critical
Publication of EP3253509B1 publication Critical patent/EP3253509B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/16—Additional equipment in association with the tools, e.g. for shearing, for trimming
    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • B21D19/088—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for flanging holes
    • 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
    • B21D22/08—Stamping using rigid devices or tools with die parts on rotating carriers
    • 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
    • B21D22/20—Deep-drawing
    • B21D22/22—Deep-drawing with devices for holding the edge of the blanks
    • 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
    • B21D22/20—Deep-drawing
    • B21D22/30—Deep-drawing to finish articles formed by deep-drawing

Definitions

  • the present invention relates to a method and an apparatus for producing a collar on a workpiece.
  • Collar or necks are required on workpieces, such as blanks or other finished parts, for different purposes, for example as a guide support, as a stiffening support or as a threaded carrier.
  • the necessary collar for this purpose, for example, by means of a forming process, the so-called collar pulling or necking, made on the workpiece.
  • an exact shape of the collar such as its length or its diameter, is of importance, for example, first a perforation of the workpiece can be made. Subsequently, by means of a partially conical, pointed or rounded collar stamp, the width of the previously produced hole can be made wide, with a collar usually forming perpendicular to the workpiece.
  • the degree of expansion can be made dependent on the achievable collar length and / or the size of the expansion to be achieved.
  • the hole widening capability is dependent not only on the initial or to-be-achieved hole size, but also on the material itself, which limits the achievable collar size and / or collar length.
  • soft, deep-drawable steels have good hole widening capability. Accordingly, the hole widening capacity of high-strength steels is lower, so that in particular the achievable with these materials collar length can be severely limited.
  • the present invention has for its object to provide a method and apparatus for producing a collar on a workpiece available, with large collar lengths can be achieved with good quality even in high-strength metals, especially high-strength steels in a simple manner.
  • the object is achieved according to a first teaching of the present invention in a generic method in that the method comprises the following steps: preforming a portion of the workpiece to form a material reserve for a collar pulling operation, collar pulling the workpiece, wherein the drawn workpiece has a flange portion and a wherein the drawn region has a ridge region adjoining the flange region, wherein the drawn region comprises a frame region and a drawing tray adjoining the frame region, and material from the region of the material reserve at least partially serves to form the frame region, perforating the drawing soil located in the drawn region of the workpiece so that an opening is formed in the drawing tray and a Ziehgen?teil adjoins the Zargen Symposium, and widening of the Ziehbodenteil Tempes.
  • the collar includes the frame portion and the expanded drawing sheet portion portion. It is particularly advantageous that the method can be easily implemented in existing press-based process steps, since in particular the collar pulling and widening can be realized by a drawing punch.
  • the material reserve makes modifications or adjustments to the workpiece, which can be used specifically to support the collar pulling operation. For example, this can provide additional material and / or facilitate the flow of the material into the drawn area. For example, can be accumulated in the region of the material reserve by preforming to form a material reserve of the material, so that for the collar pulling additional material is available. For example, in the region of the material reserve a special geometry of the workpiece can be provided, which promotes the collar pull. The material of the material reserve can flow during the collar pull especially in the frame area. Preferably, the material reserve is consumed after the collar of the workpiece.
  • the workpiece is preferably made of metal, in particular of steel.
  • steel both soft deep-drawing steels as well as higher-strength or high-strength steels are considered.
  • the workpiece may be a substantially planar, in particular unperforated board, a sheet, a semi-finished or a nearly finished molded component.
  • the process can then very efficiently a collar be formed directly on the board.
  • the collar pulling in the process is then, for example, a single-stage collar pulling operation.
  • the workpiece may also be an already formed, for example, a drawn workpiece, such as a finished part.
  • the collar pulling can thus be performed in several stages, for example, in different tools to further increase the collar length and perform the individual process steps flexible.
  • the collar pull in the context of the method then represents, for example, the last collar pull step.
  • the material reserve can therefore be formed, for example, before the beginning of the collar pull or before the last collar pull step.
  • the method may, for example, be part of a cold forming or hot working, or be integrated into such.
  • the preforming to form the material reserve, the collar, the punching and / or the expansion can be done as hot working or cold forming.
  • the collar quality corresponds to the width of the Ziehbodenteil Schemes in the radial direction, that is, in particular transversely to the collar pulling direction, preferably at most the maximum expansion width of the material.
  • the collar pulling can be done for example by means of a drawing punch and an adapted die.
  • the die for example, has a Aushalskontur, in which the Zargen Suite can be formed, whereby the collar pull can be done during the process reliable process.
  • the punching is preferably carried out by means of a cutting punch.
  • a combined pull-cutting punch is used, which has a cutting edge, preferably a rounded cutting edge on the drawing die bottom, so that the punching can be done with this stamp.
  • the region of the material reserve lies at least partially outside the region to be drawn. Under the area to be drawn is understood in particular the contact area of the drawing punch with the workpiece.
  • the area of the material reserve is preferably completely outside the area to be pulled.
  • the area of the material reserve is provided in the flange area.
  • the area of the material reserve can also be formed in the area to be pulled, that is to say in the region of the drawing floor, whereby a thinning in the region of the, in particular, ground drawing radius can be counteracted.
  • one or more elevations, in particular in the form of beads are formed by preforming the area for forming the material reserve.
  • one or more circumferential, in particular concentric elevations, in particular in the form of beads are formed around the area to be pulled.
  • at least two concentric beads are provided around the area to be drawn. It has been shown that such preforming is, on the one hand, to be carried out particularly quickly and leads to rapid cycle times and, on the other hand, satisfactorily enables the formation of the necessary material reserve.
  • the elevations are provided against the Kragenziehraum so that the workpiece can rest safely on the tool for collaring despite the surveys.
  • the preforming of the area for the formation of the material reserve takes place as a function of properties of the workpiece and / or the collar shape to be achieved. Because the area of the material reserve is tailored as a function of the collar shape, reliable production of the collar can be achieved with little effort.
  • the geometry of the area of the material reserve is determined as a function of the material and / or the workpiece thickness. For example, if one or more beads are provided in the area of the material reserve, for example, the height, the width and / or the shape of the beads can be made dependent on the material and / or the workpiece thickness. Also, the distance of the beads can be made dependent on the material properties.
  • the height of the beads is chosen so that the elongation of the material is not exceeded.
  • a length of the workpiece additionally generated by the preforming in the area of the material reserve is dimensioned such that the extensibility of the material is not exceeded.
  • the preforming of the area for forming the material reserve includes, at least in sections, a pre-stretching up to a maximum of the yield strength of the material. It has been shown that by pre-stretching the material and the resulting additional length, the flow of the material from the material reserve into the frame area can be improved and the material reserve can be provided simply and efficiently. Preferably, the extensibility of the material is not exceeded, otherwise the process reliability and quality would be impaired.
  • the area of the material reserve essentially corresponds to the collar-length of the workpiece.
  • the workpiece in the region of the material reserve during the collar pulling at least temporarily and at least partially acted upon by a particular controlled force for example by the hold-down in Kragenziehraum. Due to the particularly controlled application of force, the material reserve can additionally be pressed into the area to be pulled, which in particular can further improve the material flow in the frame area.
  • the preforming of the area for forming the material reserve takes place in a first tool or tool section and at least the collar pulling in a second tool or tool section.
  • the preforming of the material reserve area can be integrated into existing processes without substantial modifications of the collaring tools.
  • the first tool can optionally also be integrated into other work steps, such as first collar-pulling operations or cutting of the workpiece.
  • the collar pulling, the punching of the drawing floor and the expansion of the Ziehêtteil Kunststoffs Preferably in the second tool, the collar pulling, the punching of the drawing floor and the expansion of the Ziehêtteil Kunststoffs. As a result, otherwise necessary transports between individual tools can be reduced to a minimum.
  • the workpiece is brought, for example, between a drawing punch and a die with hold-down. After the collar pulling, punching and widening of the workpiece, the workpiece with finished trained collar can be removed from the second tool.
  • the object mentioned by a device for producing a collar on a workpiece in particular for carrying out the method according to the invention, with preforming means for preforming a portion of the workpiece to form a material reserve for a collar pulling, with means for collaring adapted to pull the workpiece such that the workpiece has a drawn region adjoining a flange region with a frame region and with a drawing bottom adjoining the frame region, with means for punching which are arranged to punch the drawing surface, so that a Ziehgen todayteil Scheme subsequent to the Zargen Scheme Kunststoff arises, and with means for expansion, which are adapted to expand the Ziehbodenteil Hor.
  • the combination of the frame region and the expanded drawing-sheet partial region makes it possible to form a longer and more precise collar, while the device can be easily realized by means of press-supported devices.
  • a material reserve can be formed for a subsequent collar pulling operation, so that in combination with the means for collaring, punching and widening with the apparatus, the collar length can be increased particularly effectively, even with high-strength materials.
  • high quality requirements can be met because enough material can be drawn into the frame area and thus the floor area does not thinn excessively.
  • the device has means for fixing the workpiece.
  • the means for fixing the workpiece may be formed such that the workpiece with its flange portion in the device, in particular during the collar pulling, Punching and widening is fixed.
  • the means for fixing can be realized for example by a particular pressure-controlled hold-down.
  • the device has a first tool or a first tool portion and a second tool or a second tool portion, wherein the first tool or first tool portion having the preforming means and wherein the second tool or the second tool portion comprises the means for collaring, the means for punching and the means for expanding.
  • the preforming means for forming the region of the material reserve are arranged to form one or more elevations, in particular in the form of a further embodiment of the device according to the invention of corrugations, preferably with uniform radii.
  • the device has means for at least temporary and at least partially controlled, in particular controlled application of force to the workpiece in the flange area during the collar pulling.
  • the means for applying force can be realized for example by a hold-down. Due to the particular controlled application of force in the flange region and thus preferably in the region of the material reserve, the material from the region of the material reserve can additionally be pressed into the region to be drawn, which can improve the material flow.
  • the means for collar pulling comprise a drawing punch and the means for punching a arranged on Ziehstempelteil, in particular rounded cutting edge and the drawing die arranged opposite and adapted to the cutting edge Perforated die.
  • a combined die-cutting punch is provided.
  • the cutting edge protrudes, for example, in Kragenziehraum and spaced from the drawing punch edge of the drawing punch bottom out.
  • the drawing punch can also serve to expand the Ziehêtteil Schemes. Thereby, the production of the collar can be realized with short cycle times and without substantial modifications of existing press-based devices.
  • the collar pulling, punching and widening is realized, for example, only by a movement of the drawing punch in a Kragenziehraum.
  • the collar-pulling means further comprise a die having a neck-out contour so that the workpiece can be subjected to a drawing operation by relative movement of the die and die so that the collar can be formed by the punch along the neck-out contour.
  • the stamp seen in collar pull direction may have different cross-sectional shapes, such as a round, oval or square cross-section.
  • the drawing punch has a substantially round cross-section or is of rotationally symmetrical design.
  • the preferably rounded cutting edge is arranged concentrically on the drawing punch bottom.
  • a cup-shaped pulled region can be generated by means of the collar pulling and then by punching, for example, a hub-shaped collar arise.
  • the drawing bottom can basically be formed parallel or obliquely to the flange region of the workpiece.
  • the boundary line of the drawing floor may be circular, wavy or otherwise shaped.
  • drawing die bottom apart from the cutting edge, is substantially flat and extends transversely to the collar pulling direction, unwanted overstretching of the drawing bottom is avoided and more material can flow from the flange region into the frame region.
  • a circular, in particular rounded, cutting edge and a particularly sharp-edged perforated die adapted thereto can be provided, so that a circular opening can be punched into the drawing bottom.
  • other geometric cross sections which are suitable for punching, usable, such as oval or square cross-sections.
  • the cross-sectional shapes used when collaring and punching substantially, except for an offset, match or different shapes can be used.
  • the cutting edge is rounded.
  • the drawn part bottom is not damaged by the cutting edge during the collar pulling and, for example, no indentations occur or no premature, partial punching of the workpiece takes place. Rather, the material can initially slide over the cutting edge. In interaction with the perforated die, whose movement is inhibited against the Kragenziehraum, then takes place a punching of the drawing floor at a defined time. This increases the quality of the collar wall and the possible draw depth.
  • the cutting edge is rounded means in particular that the radius of the cutting edge is greater than 0.15 mm, in particular greater than 0.25 mm, preferably up to 1 mm.
  • the radius of the cutting edge is between 0.3 and 0.8 mm.
  • an inhibiting element which serves for temporary particular defined application of force to the perforated die in response to a force acting on the part of the drawing punch in Kragenziehraum.
  • the device is set up in such a way that a defined restraining force of the perforated die exceeds the cutting force required for perforating the drawing bottom part in order to allow perforation.
  • the inhibiting force can be exerted, for example, by the inhibiting element.
  • the inhibiting element is designed as a transversal to the collar pulling movable plow, which inhibits the movement of the perforated die in Kragenziehraum.
  • the thrust wedge can release the movement of the perforated die in the collar pulling direction, in particular if the defined restraining force of the perforated die exceeds the cutting force required for punching the drawing bottom part.
  • the pusher is spring-loaded.
  • the thrust wedge and the perforated die have mating sliding surfaces, which allow sliding of the perforated die on the thrust wedge and displacement of the thrust wedge.
  • the perforated die is also spring-loaded to allow a further force against the Kragenziehraum.
  • Fig. 1 shows a schematic view of an embodiment of a first tool or tool section 1 of a device prior to the formation of a material reserve.
  • the tool or tool section 1 is shown in a partial longitudinal section, and is constructed symmetrically about the axis A.
  • the tool or the tool section 1 is installed in a suitable press, not shown here, and has an upper die 1a and a lower die or punch 1b adapted thereto preforming means for forming a region 4 of a workpiece or Workpiece section 2 on.
  • the workpiece or the workpiece section 2 in the form of a board or a sheet is brought with the press open between the dies 1a, 1b.
  • a region 4 of the workpiece 2 can be reshaped by the tool 1, so that a material reserve for a later collar pulling operation is formed in the region 4.
  • the upper die 1a is moved toward closing the tool 1 in the direction of the arrow 6 on the lower die.
  • Fig. 2 shows a schematic view of the first tool 1 from Fig. 1 after the formation of a material reserve in the region 4 of the tool 2.
  • the pre-forming with the tool 1 caused a pre-stretching of the material in the area 4 of the beads 6 a, 6 b and the adjoining areas, which led to an extension of the cross-sectional length in the region 4 of the workpiece or workpiece section 2.
  • the area 4 with the beads 6a, 6b can serve as a material reserve for a subsequent collar pulling operation.
  • the tool 1 can also be a tool section of a more complex tool, not shown, it is in principle possible for this tool to also carry out further machining operations, for example further deformations, of the workpiece 2 during the closing of the press.
  • Fig. 3 shows a schematic view of an embodiment of a second tool 10 of a device before the collar pulling.
  • the device 10 is also constructed symmetrically about the axis A. It has with a movable in Kragenziehraum 8 drawing punch or pull-cutting punch 12 means for collaring of the workpiece 2.
  • the drawing punch has a rounded cutting edge 16 arranged on the drawing die bottom 14. The cutting edge 16 protrudes in Kragenziehraum 8 from the drawing punch bottom 14 addition. This avoids the risk of premature damage or perforation of the workpiece 2.
  • the tool 10 also has means for fixing the workpiece 2 with the hold-down device 18. As shown by the arrow 9, the holding-down device can act on the workpiece 2 in a flange region 20 with a controlled force in the collar-pulling direction 8. In this way, the workpiece 2 can be fixed and material from the area 4 of the material reserve can be tracked.
  • the tool 10 further has a die 26, whose cross-sectional contour represents the Aushalskontur 28 and is adapted to the drawing die 12.
  • a perforated die 30 is resiliently mounted and adapted to the cutting edge 16 to allow a punching of the drawplate portion 42.
  • a spring element 32 is provided, which can act on the perforated die with a force against the collar pulling 8.
  • an inhibiting element in the form of a thrust wedge 34 is mounted.
  • the thrust wedge supports the perforated die 30, so that the movement of the perforated die 30 in the collar-pulling direction 8 is initially inhibited.
  • the pusher wedge 34 presses with a spring element 36 under the perforated die 30.
  • the perforated die 30 and the pusher wedge 34 have mutually adapted sliding surfaces 38, 40, which allow sliding of the punch die 30 on the pusher wedge 34.
  • Fig. 4 and 5 show a schematic view of the second tool 10 from Fig. 3 during collaring.
  • the drawing punch 12 is moved in Kragenziehraum 8.
  • a drawn region forms in the workpiece 2 with a frame region 44 adjoining the flange region 20 and with a drawing bottom 42 adjoining the frame region.
  • material of the material reserve is fed into the frame area 44 by the application of force to the area 4 with the hold-down device 18.
  • the frame portion 44 can be formed longer than with the conventional methods, while the drawing tray 42 is not substantially thinned.
  • the beads 6a, 6b are substantially smoothed during the collar pulling.
  • the drawing tray 42 is not damaged or prematurely punctured during the collar pulling and it can be reduced or avoided thinning of the drawing tray 42 by the substantially flat and transverse to the collar 8 direction drawing punch bottom 14 thinning.
  • Fig. 6 For this purpose, a schematic view of the second tool or tool section 10 is shown Fig. 3 after punching.
  • the Zargen Scheme 44 is now followed by a Ziehêtteil Colour 45.
  • the back pressure of the punch die 30 on the punch 12 is limited by the provision of the sliding surfaces 38, 40 on the Lochmatrize 30 and the pusher wedge 34 and the spring bearing of the pusher 34 to the necessary cutting force for punching the Zieh foundedteils. If the force limit is exceeded, the thrust wedge 34 deviates outward transversely to the collar pulling direction 8 in the direction of the arrow 48.
  • the perforated die 30 is further displaced further in the collar pulling direction 8, as shown by the arrow 50, by the drawing die 12 further down and the drawing die 12 can perform by further progression in Kragenziehraum 8 widening of the drawing bottom portion 45.
  • Fig. 7 shows a schematic view of the second tool or tool section 10 Fig. 3 by expanding the drawplate subregion 45.
  • the collar comprising longitudinal portions of the frame region 44 and the expanded drawplate subregion 45, a long collar can be formed without material failure from the region 4 of the material reserve and the rounded cutting edge 16.
  • Fig. 8 shows a schematic view of the second tool or tool section 10 Fig. 3 after ejection. In this case, the workpiece 2 has been conveyed out of the die 26 by the spring-loaded punching die 30 for removal from the tool 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Claims (16)

  1. Procédé de fabrication d'un rebord sur une pièce, le procédé comprenant les étapes suivantes:
    - préformer une région de la pièce pour former une réserve de matière destinée à une opération d'étirage de rebord,
    - étirer la pièce pour former le rebord, la pièce étirée comportant une région formant bride et une région étirée se raccordant à la région formant bride, la région étirée comprenant une région formant corps et une région d'étirage se raccordant à la région formant corps, et la matière de la région de la réserve de matière servant au moins partiellement à former la région formant corps,
    - perforer le fond d'emboutissage se trouvant dans la région étirée de la pièce pour former une ouverture dans le fond d'étirage et pour raccorder une partie de fond d'étirage à la région formant corps et
    - élargir la partie de fond d'étirage.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    la région de la réserve de matière est située au moins partiellement à l'extérieur de la région à étirer.
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que
    au moins une élévation, se présentant notamment sous la forme de moulure, est formée par préformage de la région destinée à former la réserve de matière.
  4. Procédé selon l'une des revendications 1 à 3,
    caractérisé en ce que
    le préformage de la région destinée à former la réserve de matière est effectué en fonction de propriétés de la pièce et/ou de la forme de rebord à obtenir.
  5. Procédé selon l'une des revendications 1 à 4,
    caractérisé en ce que
    le préformage de la zone destinée à former la réserve de matière comprend, au moins par parties, une précontrainte allant jusqu'à la limite d'élasticité maximale de la matière.
  6. Procédé selon l'une des revendications 1 à 5,
    caractérisé en ce que
    la région de la réserve de matière correspond sensiblement à la longueur d'étirage de la pièce pour former le rebord.
  7. Procédé selon l'une des revendications 1 à 6,
    caractérisé en ce que
    la pièce est soumise au moins temporairement et au moins partiellement à une force notamment commandée, pendant l'étirage de rebord dans la région de la réserve de matière.
  8. Procédé selon l'une des revendications 1 à 7,
    caractérisé en ce que
    le préformage de la région destinée à former la réserve de matière est effectué dans un premier outil ou une première partie d'outil, et au moins l'étirage de rebord est effectué dans un deuxième outil ou une première partie d'outil.
  9. Dispositif de fabrication d'un rebord sur une pièce (2), en particulier pour la mise en oeuvre du procédé selon l'une des revendications 1 à 8, le dispositif comprenant
    - des moyens de préformage (1a, 1b) destiné à préformer une région (4) de la pièce (2) pour former une réserve de matière destinée à une opération d'étirage de rebord,
    - des moyens d'étirage de rebord (12), qui sont adaptés pour étirer la pièce [2] de telle sorte que la pièce (2) comporte une région étirée se raccordant à une région formant bride (20) et pourvue d'une région formant corps (44) et d'un fond d'étirage (42) se raccordant à la région formant corps,
    - des moyens de perforation (16, 30) qui sont adaptés pour perforer la région d'étirage (42) afin de former une partie de fond d'étirage (45) se raccordant à la région formant corps (44) et
    - des moyens d'élargissement (12) qui sont adaptés pour élargir la partie de fond d'étirage (45).
  10. Dispositif selon la revendication 9, comprenant
    - un premier outil ou une première partie d'outil (1) et
    - un deuxième outil ou une deuxième partie d'outil (10),
    le premier outil ou la première partie d'outil (1) comportant les moyens de préformage (1a, 1b) et le deuxième outil ou la deuxième partie d'outil (10) comportant les moyens d'étirage de rebord (12), les moyens de perforation (16, 30) et les moyens d'élargissement (12).
  11. Dispositif selon la revendication 9 ou 10,
    caractérisé en ce que
    les moyens de préformage (1a, 1b) destinés à former la région (4) de la réserve de matière et les moyens d'étirage de rebord (12) sont adaptés les uns aux autres de telle sorte que la région (4) de la réserve de matière se trouve à l'extérieur de la région (22) à étirer.
  12. Dispositif selon l'une des revendications 9 à 11,
    caractérisé en ce que
    les moyens de préformage (1a, 1b) destinés à former la région (4) de la réserve de matière sont adaptés pour former au moins une élévation (6a, 6b), notamment sous la forme de moulures (6a, 6b).
  13. Dispositif selon l'une des revendications 9 à 12,
    caractérisé en ce que
    le dispositif comprend des moyens destinés à soumettre la pièce (2) au moins temporairement et au moins partiellement à une force notamment commandée (18) dans la région formant bride (20) pendant l'étirage du rebord.
  14. Dispositif selon l'une des revendications 9 à 13,
    caractérisé en ce que
    les moyens d'étirage de rebord (12) comprennent un poinçon d'étirage (12) et les moyens de perforation (16, 30) comprennent une arête de coupe (16) notamment arrondie qui est disposée au niveau du fond (14) du poinçon d'étirage et une matrice de perforation (30) notamment à arêtes vives qui est disposée en face du poinçon d'étirage (12) et adaptée à l'arête de coupe.
  15. Dispositif selon la revendication 14,
    caractérisé en ce que
    un élément de blocage (34) est prévu qui est utilisé pour soumettre la matrice de perforation (30) à une force temporaire notamment définie en réponse à une force agissant sur le poinçon d'étirage (12) dans le sens d'étirage du rebord (8).
  16. Dispositif selon la revendication 15,
    caractérisé en ce que
    le dispositif est adapté de manière à ce qu'une force de blocage définie de la matrice de perforation (30) dépasse la force de coupe nécessaire pour perforer la partie de fond d'étirage (42).
EP16702528.7A 2015-02-06 2016-02-01 Procédé et dispositif pour réaliser un rebord au niveau d'une pièce Active EP3253509B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015101717.2A DE102015101717A1 (de) 2015-02-06 2015-02-06 Verfahren und Vorrichtung zum Auskragen eines Werkstücks
PCT/EP2016/052042 WO2016124528A1 (fr) 2015-02-06 2016-02-01 Procédé et dispositif pour réaliser un rebord au niveau d'une pièce

Publications (2)

Publication Number Publication Date
EP3253509A1 EP3253509A1 (fr) 2017-12-13
EP3253509B1 true EP3253509B1 (fr) 2019-09-04

Family

ID=55275088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16702528.7A Active EP3253509B1 (fr) 2015-02-06 2016-02-01 Procédé et dispositif pour réaliser un rebord au niveau d'une pièce

Country Status (5)

Country Link
US (1) US10118211B2 (fr)
EP (1) EP3253509B1 (fr)
CN (1) CN107206452B (fr)
DE (1) DE102015101717A1 (fr)
WO (1) WO2016124528A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109685779B (zh) * 2018-12-14 2021-07-02 凌云光技术股份有限公司 一种工件边宽检测方法
DE102023001962A1 (de) 2023-05-15 2023-12-21 Mercedes-Benz Group AG Gegenprägen einer Sicke in einem Blech

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1613961A (en) 1923-12-10 1927-01-11 Winnifred B Parish Die mechanism
DE1452669A1 (de) * 1965-12-09 1969-03-27 Golde Gmbh H T Verfahren zur Erzeugung von Muttern fuer Schraubenverbindungen aus Blechmaterial undVorrichtung zu dessen Durchfuehrung
JPS5742569Y2 (fr) 1974-10-28 1982-09-20
JPS5155856A (ja) * 1974-11-13 1976-05-17 Hitachi Ltd Kaitenjikushiirusochi
GB1539793A (en) * 1975-04-21 1979-02-07 Hitachi Ltd Plastic working of metal
JPH0724871B2 (ja) * 1988-03-31 1995-03-22 松下電器産業株式会社 熱交換器用フィンのカラー成形法及び金型
SU1562043A1 (ru) * 1988-06-21 1990-05-07 Предприятие П/Я А-7179 Штамп дл выт жки
JP2643336B2 (ja) * 1988-08-10 1997-08-20 トヨタ自動車株式会社 バーリング加工方法および装置
US5237849A (en) * 1992-02-19 1993-08-24 Hidaka Seiki Kabushiki Kaisha Method of manufacturing fins for heat exchangers
KR100289338B1 (ko) 1996-10-07 2001-06-01 가네미쓰 유키오 보스부 일체형 판금제부재의 보스부 형성방법
FR2877864B1 (fr) * 2004-11-16 2008-02-01 Renault Sas Fixation de tole par fluo taraude a embase conique
JP2006205232A (ja) * 2005-01-28 2006-08-10 Toyota Motor Corp バーリング加工方法、及び、バーリング加工装置
DE102006029124B4 (de) 2006-06-22 2009-09-10 Benteler Automobiltechnik Gmbh Auskragen von Blechteilen
DE102008017728B4 (de) * 2008-04-07 2012-05-16 Thyssenkrupp Steel Europe Ag Verfahren zur Materialflusssteuerung beim Tiefziehen eines Werkstücks
SE533132C2 (sv) * 2008-11-18 2010-07-06 Scania Cv Abp Förfarande och anordning för pressning av en krage i en metallplåt, samt krage och plåtbleck
DE102011117066B4 (de) * 2011-10-27 2022-10-13 Benteler Automobiltechnik Gmbh Vorrichtung zur Herstellung eines warmumgeformten und pressgehärteten Kraftfahrzeugkarosseriebauteils sowie Verfahren zur Herstellung
JP2013126673A (ja) * 2011-12-19 2013-06-27 Ricoh Co Ltd 薄板バーリング加工方法及び薄板雌ねじ形成方法
JP5892150B2 (ja) 2013-12-09 2016-03-23 ダイキン工業株式会社 熱交換器用フィンのアイアニング加工装置、熱交換器用フィン製造方法及び熱交換器製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
US20180036784A1 (en) 2018-02-08
EP3253509A1 (fr) 2017-12-13
CN107206452A (zh) 2017-09-26
DE102015101717A1 (de) 2016-08-11
US10118211B2 (en) 2018-11-06
WO2016124528A1 (fr) 2016-08-11
CN107206452B (zh) 2020-07-14

Similar Documents

Publication Publication Date Title
EP1796859B1 (fr) Procede et dispositif pour produire un profile creux a soudure longitudinale
DE60200731T2 (de) Platteninnenhochdruckumformung und Vorrichtung
EP2802425B1 (fr) Dispositif et procede d'emboutissage d'elements en forme de coque avec decoupe du fond et de la paroi integree
DE102011117066B4 (de) Vorrichtung zur Herstellung eines warmumgeformten und pressgehärteten Kraftfahrzeugkarosseriebauteils sowie Verfahren zur Herstellung
DE102015101715B4 (de) Verfahren und Umformvorrichtung zur Herstellung eines Hohlkörpers
DE19647963C2 (de) Verfahren und Vorrichtung zur Herstellung von Löchern am Umfang von Hohlprofilen
EP3401032B1 (fr) Outil composite et procédé de fabrication d'un élément en tôle
EP3253509B1 (fr) Procédé et dispositif pour réaliser un rebord au niveau d'une pièce
DE102015108768A1 (de) Verfahren und Vorrichtung zur Erzielung von großen Kragenlängen
WO2016119940A1 (fr) Procédé et dispositif pour la fabrication d'un col sur une pièce à usiner
DE102017102356B3 (de) Verfahren und Vorrichtung zum Herstellen eines Kragens an einem Werkstück
EP2403665B1 (fr) Dispositif de réalisation d'un profil sur une pièce en tôle
DE102014115073A1 (de) Verfahren und Vorrichtung zur Herstellung eines Kragens an einem Werkstück
EP1623782A1 (fr) Procédé et appareil pour découper un matériau en feuillard à haute résistance
DE102015114317A1 (de) Auskragen mit großer Kragenwanddicke
EP0844035A1 (fr) Méthode de fabrication des ouvertures allongées dans des profilés creux et dispositif pour l'exécution de cette méthode
DE19913757A1 (de) Verfahren zur Herstellung einer Nietverbindung
EP3691807A1 (fr) Procédé et dispositif pour la fabrication d'éléments en tôle façonnés au moyen d'éléments préfaçonnés
EP1477248B1 (fr) Méthode de fabrication d'un corps creux comme demi-produit pour un creuset ou un cylindre de coulée
WO2011117147A1 (fr) Procédé de fabrication d'ailettes pour échangeurs de chaleur et dispositif pour mettre en œuvre ce procédé
DE102016116243A1 (de) Verfahren und Vorrichtung zum Herstellen eines Kragens an einem Werkstück
DE102008062850B4 (de) Verfahren zur Herstellung eines Tiefziehteils sowie ein Verfahren zur Steuerung einer Tiefziehvorrichtung und eine Tiefziehvorrichtung
DE10151659B4 (de) Verfahren zum Fügen von zumindest zwei Bauteilen und Vorrichtung hierfür
DE10042896A1 (de) Verfahren zum Ausbilden eins ringartigen Elementes aus einem zylindrischen Element mit einem radialen Flansch an einem Ende
DE102016103271A1 (de) Verfahren zum Herstellen eines Kragens an einem Werkstück mittels eines Vorkragens

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20170728

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190424

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1174639

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190915

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502016006415

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20190904

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191204

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191205

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200106

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20200219

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200224

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502016006415

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG2D Information on lapse in contracting state deleted

Ref country code: IS

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200105

26N No opposition filed

Effective date: 20200605

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20200201

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200229

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200229

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200229

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200201

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200201

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200229

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200229

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502016006415

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210901

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1174639

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190904