EP0504995A1 - Mâchoires d'appointage par pincement - Google Patents

Mâchoires d'appointage par pincement Download PDF

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Publication number
EP0504995A1
EP0504995A1 EP92200724A EP92200724A EP0504995A1 EP 0504995 A1 EP0504995 A1 EP 0504995A1 EP 92200724 A EP92200724 A EP 92200724A EP 92200724 A EP92200724 A EP 92200724A EP 0504995 A1 EP0504995 A1 EP 0504995A1
Authority
EP
European Patent Office
Prior art keywords
insert
base body
lasting
machines
jaws
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
EP92200724A
Other languages
German (de)
English (en)
Other versions
EP0504995B1 (fr
Inventor
Reinhard Posch
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.)
Plansee Tizit AG
Original Assignee
Plansee Tizit 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 Plansee Tizit AG filed Critical Plansee Tizit AG
Publication of EP0504995A1 publication Critical patent/EP0504995A1/fr
Application granted granted Critical
Publication of EP0504995B1 publication Critical patent/EP0504995B1/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
    • B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G3/00—Making pins, nails, or the like
    • B21G3/16—Pointing; with or without cutting
    • 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
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/56—Making machine elements screw-threaded elements

Definitions

  • the invention relates to a lasting jaw for machines for nail production, consisting of an elongated, prismatic base body with a trapezoidal cross section, one end of which has an exchangeable prismatic insert made of wear-resistant material, which is provided on at least one side surface with a lasting profile for shaping and separating the nail end.
  • Such jaws are used in pairs in machines in which wire is formed into nails. They are arranged there so that the lasting profiles of the lasting jaws are opposite one another. In the course of the workflow, the lasting jaws are brought together and opened. When the gusset jaws are brought together, the tip of the nail is first formed and then the nail is pinched off to the desired nail length. The specially designed lasting profile of the lasting jaws results in a reshaping and a cutting operation.
  • the lasting jaws have largely been made of steel. However, due to the limited wear resistance of steel, they only have a limited service life. If the wear of the lasting profile is inadmissibly high, the lasting jaws must be replaced.
  • DE-OS 28 20 259 describes a machine for nail production, in which the lasting jaws have an insert made of wear-resistant material at one end.
  • the insert is provided on the face with a lasting profile for shaping and separating the nail and clamped in a recess in the lasting jaw with a screw and a wedge-shaped clamping piece.
  • a nail flap jaw for shaping the nail head is known.
  • One end of the base body is slotted and provided with a recess which serves to receive an essentially cylindrical insert made of wear-resistant material with a plurality of clamping grooves in the lateral surface.
  • the insert is clamped in the base body by means of a tensioning screw passing through the slot.
  • the invention has for its object to provide a lasting jaw for machines for nail production with an interchangeable insert made of wear-resistant material, which allows a simpler and more space-saving clamping of the insert on the base body compared to known designs and also a clamping of inserts with a lasting profile on all side surfaces allowed.
  • the insert is arranged in an end-side recess of the base body, with lateral and / or rear contact surfaces and with a support surface inclined at an angle between 10 o and 30 o to the base surface of the base body, and via a bore penetrating the insert can be screwed to the base body.
  • the insert made of wear-resistant material can be specifically dimensioned small and can be provided with one or more lasting profiles that can be used one after the other.
  • the price / performance ratio compared to pinch jaws with a soldered hard metal end is much cheaper.
  • the special mounting and attachment of the insert ensures that the production is only briefly interrupted when replacing or moving the insert and that no new readjustment or adjustment work is required.
  • the changeover to other nail profiles is only possible in wide areas by changing the insert, without having to replace the base body of the lasting jaws.
  • the basic bodies themselves are practically not subject to wear and can therefore be used over a very long period of time. Even if the insert is destroyed prematurely due to poor adjustment or improper operation, the base body is generally not damaged.
  • the insert made of wear-resistant material is well supported by the base body, so that the forces occurring when the nail tip is formed and when the nail is pinched off are fully absorbed by the base body without the fastening screw being loaded.
  • the screw can therefore be dimensioned small and is only used to position and hold the insert in the recess.
  • the insert is screwed to the base body by means of a countersunk screw, the axis of the threaded bore in the base body and the axis of the counterbore in use being offset from one another in the longitudinal direction of the base body, so that use in Tightening the screw against the support surface and at the same time against the rear (s) contact surface (s) of the recess of the base body is pressed.
  • the insert is only provided with a lasting profile, it has proven useful to design the insert with a cuboid basic shape and to provide the rear surface opposite the end profile incorporated in the front with strongly rounded side edges. This ensures a particularly advantageous production of the insert without the safe contact and support of the insert being adversely affected in the recess in the base body.
  • a truncated-tetrahedral or truncated-pyramid shape with gusset profiles incorporated into the side surfaces has proven particularly useful. This enables the assignment to be implemented twice or three times after the initial use.
  • Carbide is the most suitable material for use with wear-resistant material, but the use of other wear-resistant materials cannot be ruled out.
  • the axis of the threaded bore -7- in the base body -1- and the axis of the countersunk bore -5- in the hard metal insert -3- are offset in the longitudinal direction of the base body -1- by a distance -d- so that when the fastening screw is tightened -2- there is a surface pressure between the bottom surface of the hard metal insert -3- and the contact surface in the recess -6- and at the same time the insert -3- is pressed against the rear contact surface of the recess -6-.
  • Figure 4 shows the variant of a hard metal insert -3- which can be used several times.
  • the insert -3- has the basic shape of a tetrahedral stump.
  • a lasting profile -4- is introduced into each of the three lateral surfaces.
  • the insert -3- can be used three times. Due to the truncated tetrahedron shaped basic shape of the insert -3-, the appropriately adapted recess -6- in the base body -1- of appropriate for such use -3- Zwick baking on two at an angle of 60 o extending rear abutment surfaces. As a result, the working pressure acting on these contact surfaces counteracts the notch effect occurring in the pinch profile -4- of the insert, which means that this type of insert -3- can also withstand higher loads.
  • FIG. 5 shows another embodiment of a reusable hard metal insert -3-.
  • This insert -3- has the basic shape of a truncated pyramid.
  • a lasting profile -4- is introduced into each of the four lateral surfaces, which enables the insert -3- to be used four times.
  • Corresponding baffles on the lasting profile -4- are used to support the insert -3- on the rear contact surface of the correspondingly adapted recess -6- of the associated base body -1-, which at the same time largely prevent the direct collision of the cutting edges, even if the setting is incorrect.
  • Such a design of a hard metal insert -3- is particularly suitable for smaller machines for the production of smaller nail types, where lower loads occur.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Table Equipment (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Glass Compositions (AREA)
  • Liquid Crystal (AREA)
EP92200724A 1991-03-20 1992-03-13 Mâchoires d'appointage par pincement Expired - Lifetime EP0504995B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0061891A AT397218B (de) 1991-03-20 1991-03-20 Zwickbacken
AT618/91 1991-03-20

Publications (2)

Publication Number Publication Date
EP0504995A1 true EP0504995A1 (fr) 1992-09-23
EP0504995B1 EP0504995B1 (fr) 1994-09-28

Family

ID=3495359

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92200724A Expired - Lifetime EP0504995B1 (fr) 1991-03-20 1992-03-13 Mâchoires d'appointage par pincement

Country Status (5)

Country Link
EP (1) EP0504995B1 (fr)
AT (2) AT397218B (fr)
DE (1) DE59200553D1 (fr)
DK (1) DK0504995T3 (fr)
ES (1) ES2062861T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003015955A1 (fr) * 2001-08-13 2003-02-27 Kennametal Inc. Inserts d'outils utilises dans la fabrication de clous resistant a l'usure
WO2004101194A1 (fr) * 2003-05-14 2004-11-25 Enkotec A/S Procede permettant d'eviter la fatigue du metal dans un outil fixe a un porte-outil
EP3333089A1 (fr) * 2016-12-08 2018-06-13 Unotech GmbH Déviation du fil pourvu d'insert en métal dur

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD40525A (fr) *
DE2349873A1 (de) * 1972-10-05 1974-05-02 Illinois Tool Works Backenhaltevorrichtung
US4150451A (en) * 1978-03-01 1979-04-24 Usm Corporation Die holder assembly
EP0401918A2 (fr) * 1989-06-09 1990-12-12 Plansee Tizit Gesellschaft M.B.H. Mâchoires de serrage pour machines de fabrication de clous
EP0406202A2 (fr) * 1989-06-30 1991-01-02 Hamex Hardmetallverktyg Ab Dispositif de serrage pour la fabrication de clous

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53137859A (en) * 1977-05-09 1978-12-01 Kameo Doi Pinch pointing device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD40525A (fr) *
DE2349873A1 (de) * 1972-10-05 1974-05-02 Illinois Tool Works Backenhaltevorrichtung
US4150451A (en) * 1978-03-01 1979-04-24 Usm Corporation Die holder assembly
EP0401918A2 (fr) * 1989-06-09 1990-12-12 Plansee Tizit Gesellschaft M.B.H. Mâchoires de serrage pour machines de fabrication de clous
EP0406202A2 (fr) * 1989-06-30 1991-01-02 Hamex Hardmetallverktyg Ab Dispositif de serrage pour la fabrication de clous

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003015955A1 (fr) * 2001-08-13 2003-02-27 Kennametal Inc. Inserts d'outils utilises dans la fabrication de clous resistant a l'usure
US6780116B2 (en) 2001-08-13 2004-08-24 Kennametal Inc. Wear resistant nail manufacturing tool inserts
WO2004101194A1 (fr) * 2003-05-14 2004-11-25 Enkotec A/S Procede permettant d'eviter la fatigue du metal dans un outil fixe a un porte-outil
CN100355516C (zh) * 2003-05-14 2007-12-19 伊科泰克公司 抑制固定在刀具夹中刀具的金属疲劳的方法、刀具系统和刀具、以及刀具的应用
EP3333089A1 (fr) * 2016-12-08 2018-06-13 Unotech GmbH Déviation du fil pourvu d'insert en métal dur

Also Published As

Publication number Publication date
ATA61891A (de) 1993-07-15
ES2062861T3 (es) 1994-12-16
DE59200553D1 (de) 1994-11-03
DK0504995T3 (da) 1995-04-10
AT397218B (de) 1994-02-25
EP0504995B1 (fr) 1994-09-28
ATE112194T1 (de) 1994-10-15

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