EP0406202B1 - Dispositif de serrage pour la fabrication de clous - Google Patents

Dispositif de serrage pour la fabrication de clous Download PDF

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Publication number
EP0406202B1
EP0406202B1 EP90850253A EP90850253A EP0406202B1 EP 0406202 B1 EP0406202 B1 EP 0406202B1 EP 90850253 A EP90850253 A EP 90850253A EP 90850253 A EP90850253 A EP 90850253A EP 0406202 B1 EP0406202 B1 EP 0406202B1
Authority
EP
European Patent Office
Prior art keywords
die
die holder
clamping
hole
holder
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.)
Expired - Lifetime
Application number
EP90850253A
Other languages
German (de)
English (en)
Other versions
EP0406202A2 (fr
EP0406202A3 (en
Inventor
Lars Hurtig
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.)
HAMEX HARDMETALLVERKTYG AB
Original Assignee
HAMEX HARDMETALLVERKTYG AB
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 HAMEX HARDMETALLVERKTYG AB filed Critical HAMEX HARDMETALLVERKTYG AB
Publication of EP0406202A2 publication Critical patent/EP0406202A2/fr
Publication of EP0406202A3 publication Critical patent/EP0406202A3/en
Application granted granted Critical
Publication of EP0406202B1 publication Critical patent/EP0406202B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/02—Dies or mountings therefor
    • B21J13/03—Die mountings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G3/00—Making pins, nails, or the like
    • B21G3/12—Upsetting; Forming heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G3/00—Making pins, nails, or the like
    • B21G3/18—Making pins, nails, or the like by operations not restricted to one of the groups B21G3/12 - B21G3/16
    • B21G3/28—Making pins, nails, or the like by operations not restricted to one of the groups B21G3/12 - B21G3/16 by forging or pressing

Definitions

  • the present invention relates to a clamping device for nails, as described in the introductory portion of claim 1.
  • Clamping devices of the above-mentioned kind are previously known. They are provided in pairs in a nail-making machine and hold the nail while a head is being formed and the nail is cut off from a metal wire.
  • Known clamping devices comprise a die holder provided with a recess, in which a hard metal die has been mounted by soldering. The reason why the entire clamping device is not made of hard metal is the high material costs. Although the clamping parts are made of metal they wear out after some time of use, and the whole clamping device will then be discarded and replaced by a new one, since the cost of removing the die and mounting a new die in the die holder will not be less than that of replacing the whole clamping device and since the tensile properties of the die holder become impaired.
  • DD-A-40525 discloses a clamping device according to the preamble of the claim.
  • the die and the hole in the die holder each have a hexagonal cross section.
  • This design has quite a few disadvantages.
  • One is that the corners of the hexagonal hole form indications of fraction which weaken the holder and which may cause cracks therein emanating from the corners.
  • Another one is that the die and the hole in the die holder are more complicated to manufacture than dies and die holes having circular cross sections.
  • a third disadvantage is that the machining, especially grinding, of the die and the die hole is more dificult and more time-consuming than that of circular dies and die holes.
  • the die holder of DD-A-40525 is provided with a device for axially retaining the die in the hole, the hexagonal cross-section preventing the die from rotation about its longitudonal axis, the die not being clamped in the die holder.
  • clamping devices shown in the figures are used in pairs, as shown in Figure 4, in a nail-making machine to clamp a wire while a head is being formed at the open end of the wire by means of a punch and the wire is cut to the length of the nail by cutting tools working in pairs.
  • Each of the two clamping devices which are of essentially the same shape, comprises a die holder 1 intended to be mounted in the nail-making machine, and a hard-metal die 2, which is detachably mounted in the die holder.
  • the die holder 1 which is made of steel, has a parallel-trapezoidal cross section and is provided with a recess in the form of a drilled hole 3 at one end.
  • the circumference of the drilled hole 3 is smaller than the circumference of a circle, so that the drilled hole opens at said end along two parallel edges 4 and 5, the distance between which is considerably smaller than and preferably around two fifths of the diameter of the drilled hole.
  • the edges 4, 5 delimit parallel surfaces 6 and 7 on the die holder 1, the parallel surfaces connecting on to bevels 8 and 9.
  • a smaller drilled hole 10 parallel with the drilled hole 3 but of a smaller diameter than the drilled hole is connected with the drilled hole 3 by means of a through slot 11.
  • a through hole 12 intersects the slot 11 and is provided, on one side of the slot, with a thread 13.
  • a bolt 14 is inserted in the drilled hole 12 and presses the two tool portions 1a and 1b on both sides of the slot against each other on tightening, since said portions are flexible.
  • the die 2 is substantially cylindrical and has a diameter which is slightly smaller than the diameter of the drilled hole 3. Its length corresponds to the length of the drilled hole 3.
  • the die 2 is formed with three plane surfaces in which clamping surfaces in the form of clamping grooves 15 are provided.
  • Each clamping groove comprises a semi-cylindrical portion 16 with a plurality of annular slots 17, and a semi-frustoconical portion 18. All the clamping grooves 15 can be identical or of different dimensions adapted to different nail sizes and shapes.
  • the clamping grooves 15 can be less or more than three in number and are suitably evenly distributed over the circumference of the die.
  • the die 2 fits the drilled hole 3 into which it is inserted in the way shown in Figures 1 and 4 and is turnable 360° within the drilled hole.
  • the die is lockable in any position in the drilled hole by tightening the bolt 14 which presses the portions 1a and 1b against each other.
  • Figure 4 shows two clamping devices, at least one of which is slidable along its longitudinal axis towards and away from the other clamping device.
  • two identical clamping surfaces 15 on the two dies 2 bearing on each other form a circular groove 19, the portions 16 of which are intended to clamp a wire (not shown) from which a nail is to be made, and the portions 18 of which are intended to guide the wire fed to the clamping devices.
  • a nail head is intended to be formed from the wire at the open end thereof when a punch (not shown) is struck onto said end in the longitudinal direction of the wire.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
  • Adornments (AREA)
  • Clamps And Clips (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Claims (1)

  1. Dispositif de blocage pour clous, comprenant un porte-outils (1), montable dans une machine à fabriquer des clous, et un outil (2) en métal dur disposé dans ledit porte-outil, le porte-outil avec l'outil étant susceptibles de bloquer des clous, lorsqu'ils sont en combinaison avec un porte-outil complémentaire avec outil pendant la fabrication des clous, l'outil en métal dur ayant une surface de serrage (15) qui, en association avec une surface de serrage complémentaire d'un outil complémentaire, maintient un clou pendant la fabrication de celui-ci, l'outil (2) étant muni d'au moins deux surfaces de serrage (15) espacées selon la circonférence, chaque surface de serrage (15) s'étendant parallèlement à l'axe longitudinal de l'outil (2), celui-ci étant introduit de manière amovible de façon à pouvoir être bloqué dans une cavité (3) formée dans le porte-outil (1) de telle manière que l'une des surfaces de serrage se trouve en face d'une surface de serrage correspondante sur l'outil complémentaire et coopère avec elle, caractérisé en ce que la cavité (3) s'étend sous la forme d'un trou cylindrique partiellement circulaire traversant le porte-outil (1) et est perpendiculaire à l'axe longitudinal du porte-outil (1), le trou débouchant, sur toute sa longueur, selon deux bords parallèles (4, 5) dans la surface d'extrémité du porte-outil (1), en face du porte-outil complémentaire (1), la distance entre les bords (4, 5) étant inférieure à la taille du trou, la surface de serrage (15) de l'outil (2) étant apte à faire face à la surface de serrage correspondante sur l'outil complémentaire, en étant disposée entre les deux bords parallèles (4, 5) du porte-outil (1), un second trou traversant (10) percé dans le porte-outil (1) étant prévu parallèlement à la cavité (3) sur le côté opposé à l'emplacement de la surface d'extrémité, une fente traversante (11) étant prévue pour relier le second trou (10) à la cavité (3) sur toute sa longueur dans le plan de symétrie du porte-outil (1) et un boulon (14) étant prévu entre la cavité (3) et le second trou (10), perpendiculairement à la fente (11) pour permettre le blocage de l'outil (2) dans le porte-outil (1).
EP90850253A 1989-06-30 1990-06-26 Dispositif de serrage pour la fabrication de clous Expired - Lifetime EP0406202B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8902386A SE467530B (sv) 1989-06-30 1989-06-30 Klaemback foer spiktillverkning
SE8902386 1989-06-30

Publications (3)

Publication Number Publication Date
EP0406202A2 EP0406202A2 (fr) 1991-01-02
EP0406202A3 EP0406202A3 (en) 1991-07-24
EP0406202B1 true EP0406202B1 (fr) 1994-06-01

Family

ID=20376450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90850253A Expired - Lifetime EP0406202B1 (fr) 1989-06-30 1990-06-26 Dispositif de serrage pour la fabrication de clous

Country Status (5)

Country Link
EP (1) EP0406202B1 (fr)
AT (1) ATE106292T1 (fr)
DE (1) DE69009310T2 (fr)
FI (1) FI95213C (fr)
SE (1) SE467530B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7004846B2 (en) 2001-08-13 2006-02-28 Kennametal Inc. Wear resistant nail manufacturing tool inserts

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT397218B (de) * 1991-03-20 1994-02-25 Plansee Tizit Gmbh Zwickbacken
TR200101596T2 (tr) * 1998-12-10 2001-09-21 Enkotec A/S Bir çivi makinesi için takım çemberi ve fiting
US6786828B2 (en) 2002-04-17 2004-09-07 Soerensen Svend-Helge Sell Method of fastening a tool in a tool holder
AU2003223933A1 (en) * 2003-05-14 2004-12-03 Enkotec A/S Inhibiting metal fatigue in a tool secured in a tool holder
US7090585B2 (en) * 2004-02-27 2006-08-15 Kennametal Inc. Nail manufacturing tool holder having a quick change mechanism
AT10206U1 (de) * 2007-10-22 2008-11-15 Ceratizit Austria Gmbh Werkzeug zum klemmen oder ablängen
CN118682050B (zh) * 2024-08-23 2024-10-29 常州洛克曼医疗器械有限公司 切割吻合器用钛钉加工系统及其工作方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE369347C (de) * 1923-02-17 Karl Hubschneider Feilstock
DD40525A (fr) *
US2550949A (en) * 1948-03-19 1951-05-01 Weidner Hilda Thread chasing tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7004846B2 (en) 2001-08-13 2006-02-28 Kennametal Inc. Wear resistant nail manufacturing tool inserts

Also Published As

Publication number Publication date
SE8902386L (sv) 1990-12-31
EP0406202A2 (fr) 1991-01-02
SE467530B (sv) 1992-08-03
ATE106292T1 (de) 1994-06-15
FI903321A0 (fi) 1990-06-29
SE8902386D0 (sv) 1989-06-30
EP0406202A3 (en) 1991-07-24
DE69009310T2 (de) 1995-01-19
FI95213B (fi) 1995-09-29
DE69009310D1 (de) 1994-07-07
FI95213C (fi) 1996-01-10

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