EP0870558B1 - Verschleissfester Werkzeugeinsatz - Google Patents

Verschleissfester Werkzeugeinsatz Download PDF

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Publication number
EP0870558B1
EP0870558B1 EP98201082A EP98201082A EP0870558B1 EP 0870558 B1 EP0870558 B1 EP 0870558B1 EP 98201082 A EP98201082 A EP 98201082A EP 98201082 A EP98201082 A EP 98201082A EP 0870558 B1 EP0870558 B1 EP 0870558B1
Authority
EP
European Patent Office
Prior art keywords
insert
wear
tool half
tool
resistant
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
EP98201082A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0870558A3 (de
EP0870558A2 (de
Inventor
Michael Ing. Schretter
Thomas Ing. Ginther
Markus Ing. De Monte
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.)
Ceratizit Austria GmbH
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 EP0870558A2 publication Critical patent/EP0870558A2/de
Publication of EP0870558A3 publication Critical patent/EP0870558A3/de
Application granted granted Critical
Publication of EP0870558B1 publication Critical patent/EP0870558B1/de
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
    • 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
    • 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
    • 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 invention relates to a wear-resistant tool insert that can be used in machines for shaping and cutting to length nails, screws and rivets wire-shaped starting material.
  • Such half tool inserts are so-called striking or clamping jaws as well as lasting jaws, which are used in pairs in the machine in identical design.
  • the clamping jaws are often implemented and exchangeable Half-inserts in tool holders usually in the form of elongated, prismatic bodies with trapezoidal cross section in corresponding recesses of this tool holder used and clamped.
  • the jaws have an or on an insert surface several clamping grooves with a semicircular cross-section for clamping the supplied wire and a subsequent one Recess on which in the closed state of the two opposing clamping jaws or half-tool inserts for shaping the desired head shape of the one to be produced Part serves.
  • the clamping jaws are arranged in the machine so that the clamping grooves opposite the half-inserts used in pairs.
  • the jaws are closed or opened. in the the inserted wire is closed by the tension grooves clamped.
  • the clamping grooves are preferably with semicircular transverse grooves profiled.
  • the part is closed by closing two opposite tool half-inserts in the form of lasting jaws.
  • the jaws are also clamped in tool holders or directly in the machine. she have a symmetrical profile with several cutting edges, through which on the one hand the end of the finished part is molded and the part is cut to length and on the other hand, the initial geometry for the formation of the head of the next part is molded.
  • the two-wire version enables the simultaneous production of two Nails, screws or rivets, i.e. a doubling of the Production output.
  • the pinch jaws are usually only single-core executed so that four in conjunction with two-core jaws Pinches are used.
  • the half-tool inserts are often used to reduce wear Carbide made. Is the wear of the clamping grooves or the cutting edges bets must be exchanged.
  • Tungsten carbide and other hard, wear-resistant materials also show a high compressive strength a very high hardness and therefore high Wear resistance, but are in terms of tensile and Bending stresses only moderately resilient. Due to irregularities in wire quality fluctuating dimensions or different strengths it can the manufacture of nails, screws or rivets at very high levels Tensile stresses and thus excessive stresses on the inserts wear-resistant material come what often with a break of the inserts connected is.
  • EP-A-0 650 698 describes a method for producing surgical Needles, in which the needle tip is formed by reshaping the wire-shaped outlet material, is produced in a corresponding die.
  • the die In order to shape the die with transitions that are as sharp as possible, to form a needle point that is as pointed and sharp as possible, the die can be reached in the longitudinal direction of the needle tip executed symmetrically divided.
  • the invention has for its object wear-resistant tool inserts for machines for the production of nails, screws, rivets and the like create an inadmissible compared to known designs Overstraining due to excessive tensile stresses and therefore premature Breaking is avoided.
  • the individual parts of the half tool insert are by a Rivet or screw connection connected to each other.
  • the individual parts of the half tool insert via the tool holder or the machine part in which it is inserted are pressed together.
  • the individual parts protrude an at least partially serrated surface in connection.
  • Connecting elements such as screws or rivets, for connecting the individual parts are provided.
  • Tungsten carbide is a particularly advantageous material for semi-tool use used.
  • FIG. 1 shows a nail beating jaw consisting of an elongated prism-shaped base body -1- with one in a recess interchangeable, cube-shaped, inventive Insert -2- made of hard metal at one end.
  • the basic body is -1- starting from the recess for use in the middle in the longitudinal direction Slot introduced.
  • the base body -1- of one is transverse to this slot
  • Clamping screw -7- passes through which through the slot spaced sections of the base body -1- contracted and thus insert -2- is clamped in the recess.
  • the insert -2- points in a clamping groove -3- with transverse grooves -8- on its front surface the inserted wire for nail production is clamped.
  • the bet is -2 designed symmetrically divided in the longitudinal direction of the clamping groove -3-. Through the the clamping force acting from the base body -1- onto the insert -2- becomes the two Parts pressed together. To improve mutual interlocking of the two parts have the interconnected surfaces a sawtooth profile -6-.
  • FIGS. 2 and 3 show the variant of an insert -2-according to the invention.
  • the cube-shaped insert -2- points to two opposite Shell surfaces each two parallel and symmetrical to each other Clamping grooves -3-.
  • the insert -2- is two in the longitudinal direction opposite clamping grooves -3- split. Cross to the The insert -2- is pierced in the center of the clamping grooves -3-. With a rivet -5- they are three parts of the insert joined together.
  • Figures 4 to 6 show an insert according to the invention -9- for one Pinch jaws for the production of nails with a symmetrical profile in the longitudinal direction of the wire to be cut.
  • the jaws are centered and cut -10-by the central cutting edge.
  • the lateral cutting edges -11- on the one hand the end of the finished part and on the other hand the initial shape of the next Part molded to form the final head shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Insertion Pins And Rivets (AREA)
  • Forging (AREA)
EP98201082A 1997-04-09 1998-04-06 Verschleissfester Werkzeugeinsatz Expired - Lifetime EP0870558B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT210/97U 1997-04-09
AT21097U 1997-04-09
AT0021097U AT2143U1 (de) 1997-04-09 1997-04-09 Verschleissfester werkzeugeinsatz

Publications (3)

Publication Number Publication Date
EP0870558A2 EP0870558A2 (de) 1998-10-14
EP0870558A3 EP0870558A3 (de) 2001-01-31
EP0870558B1 true EP0870558B1 (de) 2003-10-15

Family

ID=3484425

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98201082A Expired - Lifetime EP0870558B1 (de) 1997-04-09 1998-04-06 Verschleissfester Werkzeugeinsatz

Country Status (6)

Country Link
US (1) US5979216A (da)
EP (1) EP0870558B1 (da)
AT (1) AT2143U1 (da)
DE (1) DE59809893D1 (da)
DK (1) DK0870558T3 (da)
ES (1) ES2212209T3 (da)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6780116B2 (en) 2001-08-13 2004-08-24 Kennametal Inc. Wear resistant nail manufacturing tool inserts
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

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US377981A (en) * 1888-02-14 Bolt-threading machine
US228033A (en) * 1880-05-25 Device for swaging screw-threads on eyebolts
US357768A (en) * 1887-02-15 Clinton fuebish
US739873A (en) * 1902-11-28 1903-09-29 Harding Allen Self-opening die.
US740016A (en) * 1903-06-15 1903-09-29 Harding Allen Self-opening die.
US986697A (en) * 1909-12-17 1911-03-14 Frank Mchale Mechanism for making bolts.
US996840A (en) * 1910-06-28 1911-07-04 Frank Mchale Mechanism for making bolts, screws, &c.
US2652577A (en) * 1946-04-27 1953-09-22 Bulloneria E Viteria Italiana Machine for producing articles from blank stock
AT392028B (de) * 1989-06-09 1991-01-10 Plansee Tizit Gmbh Nagelschlagbacken
AU676091B2 (en) * 1993-11-01 1997-02-27 Ethicon Inc. Process for manufacturing surgical needles

Also Published As

Publication number Publication date
EP0870558A3 (de) 2001-01-31
ES2212209T3 (es) 2004-07-16
DE59809893D1 (de) 2003-11-20
US5979216A (en) 1999-11-09
DK0870558T3 (da) 2004-02-23
AT2143U1 (de) 1998-05-25
EP0870558A2 (de) 1998-10-14

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