CA2524636A1 - Inhibiting metal fatigue in a tool secured in a tool holder - Google Patents

Inhibiting metal fatigue in a tool secured in a tool holder Download PDF

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Publication number
CA2524636A1
CA2524636A1 CA002524636A CA2524636A CA2524636A1 CA 2524636 A1 CA2524636 A1 CA 2524636A1 CA 002524636 A CA002524636 A CA 002524636A CA 2524636 A CA2524636 A CA 2524636A CA 2524636 A1 CA2524636 A1 CA 2524636A1
Authority
CA
Canada
Prior art keywords
tool
wedge
recess
shape
sides
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
CA002524636A
Other languages
French (fr)
Other versions
CA2524636C (en
Inventor
Svend-Helge Sell Sorensen
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.)
Enkotec AS
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2524636A1 publication Critical patent/CA2524636A1/en
Application granted granted Critical
Publication of CA2524636C publication Critical patent/CA2524636C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • 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
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • 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
    • B21K1/44—Making machine elements bolts, studs, or the like
    • B21K1/46—Making machine elements bolts, studs, or the like with heads

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Workshop Equipment, Work Benches, Supports, Or Storage Means (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Milling Processes (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

The present invention relates to a method of at least inhibiting metal fatig ue in a tool (2) secured in a tool holder (4), which tool comprises a front sid e (6) shaped for use in forming of metal wire into nails, screws etc., and whi ch tool holder comprises a recess (8) adapted for receiving the tool. New aspec ts of the method involve that the tool (2) comprises two sides (10,12) forming a wedge-shaped, which is narrowing towards the front side (6) of the tool, whe re the angle (A~) of the wedge-shaped is between 0.5 and 45 degrees, and preferably between 1 and 15 degrees. It is thereby obtained that the tool ma y be compressed between the sides of the recess, such that compressive stresse s are introduced in the tool. Due to the angle of the wedge-shape of the tool and the recess, the compressive stresses may reach a high level. When the to ol is afterwards used in the nail/screw making process, the tensile stresses caused thereby must relieve or overcome the built-in compressive stresses before a state of tensile stress in the tool can be present.

Claims (11)

1. A method of at least inhibiting metal fatigue in a tool secured in a tool holder, which tool(2) comprises a front side(6) including a shaping por-tion(36) shaped for use in forming of metal wire into nails, screws, etc., and which tool holder(4) comprises a recess(8) adapted for receiving the tool(2), said tool(2) comprising two sides(10,12) forming a wedge-shape, which is narrowing towards the front side(6) of the tool, where the angle(A') of the wedge-shape is between 0.5 and 45 degrees, and preferably between 1 and 15 degrees, and where the tool(2) further comprises a back side(18), and where the tool(2) is placed in the recess(8) and forced in the direction of the front side(6), by applying pressure on said back side(18) of the tool with fas-tening means(20), in a way such that the two sides(10,12) of the tool are compressed against corresponding sides(14,16) of the recess and compres-sive stresses are introduced in the tool between said two sides(10,12), said compressive stresses being present at least in a region by the shaping por-tion(36).
2. A method according to claim 1, wherein the region with compressive stresses is ranging from around the shaping portion and a distance away, which is at least equal to two times the active width of the shaping portion, and preferably more than five times the active width of the shaping portion.
3. A method according to claim 1 or 2, wherein the region with compressive stresses makes out at least the majority of the tool(2), and preferably the entire tool(2) in general.
4. A method according to claims 1 - 3, wherein the two sides(10,12) of the tool(2) are formed with a wedge-shape relative to a bottom side(22) of the recess, which wedge-shape is narrowing away from said bottom side.
5. A method according to claims 1 - 4, wherein the back side(18) of the tool is sloped relative to the bottom side(22) of the recess, and where a wedge(24) is placed with one side against the back side(18), which wedge(24) comprises a hole(26), through which hole a bolt(28) is connected to the tool holder(4), and where pressure is applied on said back side(18) by tightening the bolt(28) against the wedge(24).
6. A tool system for practising a method according to any of claims 1- 5, said tool system comprising a tool(2) and a tool holder(4), which tool comprises a front side(6) shaped for use in forming of metal wire into nails, screws, etc., and which tool holder(4) comprises a recess(8) adapted for receiving the tool and wherein the tool(2) is placed, wherein the tool(2) comprises two sides(10,12) forming a wedge-shape, which is narrowing towards the front side(6) of the tool, where the angle(A') of the wedge-shape is between 0.5 and 45 degrees, and preferably between 1 and 15 degrees, and where the recess(8) in the tool holder comprises two corresponding sides(14,16), which have substantially the same wedge-shape as the tool(2), and where the tool comprises a back side(18), and where the tool(2) can be forced in the direction of the front side(6), by the application of pressure on said back side(18) of the tool with fastening means(20), in a way such that the two sides(10,12) of the tool will be compressed against corresponding sides(14,16) of the recess.
7. A tool system according to claim 6, wherein the back side(18) of the tool is sloped relative to a bottom side(22) of the recess, and where the system further includes a wedge(24) placed with one side against the back side(18) and the opposite side against an end side(30) of the recess, which wedge(24) comprises a hole(26), through which hole a bolt(28) is connected to the tool holder(4), and where pressure can be applied to the back side(18) of the tool(2) by tightening the bolt(28) against the wedge(24).
8. A tool for a tool system according to claim 6 or 7, wherein the tool(2) com-prises a front side(6) shaped for use in forming of metal wire into nails, screws, etc., said tool(2) being adapted to be placed in a tool holder(4), said tool holder comprising a recess(8) shaped for receiving the tool, wherein the tool(2) comprises two sides(10,12) forming a wedge-shape, which is narrow-ing towards the front side(6) of the tool, where the angle(A') of the wedge-shape is between 0.5 and 45 degrees, and preferably between 1 and 15 de-grees.
9. A tool according to claim 8, wherein the tool(2) comprises a back side(18), which back side is sloped and adapted for cooperation with a wedge(24).
10. A tool according to claim 8 or 9, wherein the two sides(10,12) of the tool(2) are further forming a wedge-shape, which is narrowing away from a bottom side(38) of the tool, and where the angle(Z') of the.wedge-shape is between 0.5 and 15 degrees.
11. Use of a tool(2) according to any of claims 8-10 in a machine process for the manufacture of nails, screws and similar items.
CA2524636A 2003-05-14 2003-05-14 Inhibiting metal fatigue in a tool secured in a tool holder Expired - Lifetime CA2524636C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DK2003/000320 WO2004101194A1 (en) 2003-05-14 2003-05-14 Inhibiting metal fatigue in a tool secured in a tool holder

Publications (2)

Publication Number Publication Date
CA2524636A1 true CA2524636A1 (en) 2004-11-25
CA2524636C CA2524636C (en) 2011-07-12

Family

ID=33442591

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2524636A Expired - Lifetime CA2524636C (en) 2003-05-14 2003-05-14 Inhibiting metal fatigue in a tool secured in a tool holder

Country Status (8)

Country Link
EP (1) EP1626828A1 (en)
CN (1) CN100355516C (en)
AU (1) AU2003223933A1 (en)
BR (1) BR0318294A (en)
CA (1) CA2524636C (en)
MX (1) MXPA05012174A (en)
NO (1) NO20055833L (en)
WO (1) WO2004101194A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4150451A (en) * 1978-03-01 1979-04-24 Usm Corporation Die holder assembly
JPS57165153A (en) * 1981-04-02 1982-10-12 Kenji Deki Press-forming device for middle of shaft part
CN85107978A (en) * 1985-10-19 1987-04-22 南通市拉丝厂 The mould of roll-type nail-making machine and clamping device thereof
SE467530B (en) * 1989-06-30 1992-08-03 Haamex Haardmetallverktyg Ab CLAUM BACK FOR SPIKE MANUFACTURING
AT397218B (en) * 1991-03-20 1994-02-25 Plansee Tizit Gmbh Pinch
AT2143U1 (en) * 1997-04-09 1998-05-25 Plansee Tizit Gmbh WEAR-RESISTANT TOOL INSERT
US6780116B2 (en) * 2001-08-13 2004-08-24 Kennametal Inc. Wear resistant nail manufacturing tool inserts

Also Published As

Publication number Publication date
AU2003223933A1 (en) 2004-12-03
CN1774308A (en) 2006-05-17
NO20055833L (en) 2006-01-20
CA2524636C (en) 2011-07-12
NO20055833D0 (en) 2005-12-08
EP1626828A1 (en) 2006-02-22
WO2004101194A1 (en) 2004-11-25
BR0318294A (en) 2006-07-11
MXPA05012174A (en) 2006-02-08
CN100355516C (en) 2007-12-19

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Effective date: 20230515