EP1060812A2 - Draht für Gewindeeinsätze - Google Patents

Draht für Gewindeeinsätze Download PDF

Info

Publication number
EP1060812A2
EP1060812A2 EP00300113A EP00300113A EP1060812A2 EP 1060812 A2 EP1060812 A2 EP 1060812A2 EP 00300113 A EP00300113 A EP 00300113A EP 00300113 A EP00300113 A EP 00300113A EP 1060812 A2 EP1060812 A2 EP 1060812A2
Authority
EP
European Patent Office
Prior art keywords
wire
coil
helical coil
insert
helical
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
EP00300113A
Other languages
English (en)
French (fr)
Other versions
EP1060812A3 (de
EP1060812B1 (de
Inventor
Fusahide Hondo
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.)
NIPPON SPREW CO Ltd
Original Assignee
NIPPON SPREW CO Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=15901936&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1060812(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by NIPPON SPREW CO Ltd filed Critical NIPPON SPREW CO Ltd
Publication of EP1060812A2 publication Critical patent/EP1060812A2/de
Publication of EP1060812A3 publication Critical patent/EP1060812A3/de
Application granted granted Critical
Publication of EP1060812B1 publication Critical patent/EP1060812B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F3/00—Coiling wire into particular forms
    • B21F3/12—Coiling wire into particular forms of interconnected helical springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F3/00—Coiling wire into particular forms
    • B21F3/02—Coiling wire into particular forms helically
    • 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 present invention relates to a helical coil insert used generally by inserting the same into a tap hole of a work. More particularly, the invention relates to a wire used when manufacturing such a helical coil insert.
  • a tanged helical coil insert 10T is illustrated in Fig. 4.
  • Such a helical coil insert 10T is prepared usually by winding into a spring-shaped cylinder a high tensile special steel wire having a diamond-shaped cross-section such as a cold-rolled 18-8 stainless steel wire, and is screwed into a tap hole 101 formed in a work 100 by means of an insertion tool and secured thereto as shown in Figs. 5 and 6. Then, a bolt 20 or the like is screw-engaged with this helical coil insert 10T as a female screw.
  • a high screw tightening force is available, and further, it is possible to repeatedly insert and disengage the bolt 20.
  • a stopper piece 11 folded down in the radial direction of the coil known as a tang engaged with the insertion tool is provided.
  • This tang 11 must be removed after it is secured into the tap hole 101 of the work 100, and for this purpose, a notch 8 is formed on the outer side surface of a first coil portion in contact with the coil free end having the tang 11 formed thereon.
  • the tangless helical coil insert 10 is as well attached to the tap hole 101 of the work as shown in Figs. 5 and 6.
  • the operation of collecting the removed tang 11 after attachment is not necessary.
  • the heads 4 and 5 are formed, for example, into a convergent shape in which the wire diameter is slightly reduced along the longitudinal axis of the wire toward the tip thereof so that the coil free end tip does not damage the tap hole upon attachment of the helical coil insert 10 into the tap hole.
  • the helical coil insert 10 having the heads 4 and 5 and the recesses 6 and 7 for the insertion tool is conventionally manufactured through many such steps as:
  • a wire for manufacturing a helical coil insert comprising coil free end forming sections formed at prescribed intervals of length in the axial direction of a wire, the coil free end forming sections having a first and a second convergent sections extending in directions leaving each other along the axial direction of the wire to reach an outer periphery of the wire and a first and a second recesses formed respectively adjacently to the first and second convergent sections.
  • the coil free end forming sections are formed in alignment with the axial direction of the wire.
  • the coil free end forming sections have a coupling section, extending for a prescribed distance in the axial direction, for connecting the first and second convergent sections.
  • the first and second convergent sections and the first and second recesses of the wire of the invention form a head of the coil free end tip and the recess of the helical coil insert.
  • a wire for manufacturing a helical coil insert with a tang comprising coil free end forming sections formed at prescribed intervals of length in the axial direction of a wire, the coil free end forming sections having a notch comprising a first and a second slants extending in a direction leaving each other along the axial direction of the wire to reach the outer periphery of the wire.
  • the coil free end forming sections are in alignment with the axial direction of the wire.
  • the aforesaid notch of the wire of the invention forms a notch on an inner periphery of a first coil portion adjacent to the tanged helical coil insert.
  • Fig. 1 illustrates an embodiment of the wire 1 for a helical coil insert of the present invention.
  • a wire 1 may be, for example, a high tensile special steel wire such as a cold-worked 18-8 stainless steel wire having, for example, a diamond-shaped cross-section.
  • coil free end forming sections 2 axe formed, on the wire 1, at prescribed intervals of length (P) determined from the geometry of a helical coil insert to be manufactured, in the longitudinal axial direction of the wire 1.
  • the coil free end forming sections 2 have a coupling section 3 having a prescribed length (W) with a cross-sectional shape smaller than the outer shape of the wire, and a first and a second convergent sections 4 and 5 which are in contact with both sides of the coupling section 3 and which extend in directions leaving each other toward the outer periphery of the wire 1 along the axial direction thereof.
  • the length (W) of this coupling section 3 may be set at an arbitrary value as required, or may be non-existent.
  • the aforementioned first and second convergent sections 4 and 5 may have an identical shape or different shapes. At all events, these sections 4 and 5 have substantially the same shape as that of the convergent heads formed at the coil free end tips of the helical coil insert to be manufactured.
  • the inclination angles a, b, c and d of the first and second convergent sections 4 and 5 are usually within a range of from 10° to 15°, are not limited, and may be the same or different. It is also possible to form the first and second convergent sections 4 and 5 into a rounded shape to eliminate sharp corners.
  • the coil free end forming section 2 has recesses 6 and 7 formed adjacently respectively to the above-mentioned first and second convergent sections 4 and 5.
  • These recesses 6 and 7 are formed perpendicularly to the axis of the wire 1, and comprise flat surfaces 6a and 7a serving as stopper surfaces engaging with clicks 31 of the insertion tool 30 (Fig. 8) after completion of the helical coil insert, and curved surfaces 6b and 7b which curvedly extend from these flat surfaces 6a and 7a in a direction counter to that of the convergent sections 4 and 5, and after completion of the helical coil insert, serve as cam surfaces acting on the click of the insertion tool. That is, the recesses 6 and 7 serve as recesses formed adjacently to the head of the manufactured helical coil insert, and take substantially the same shape as that of the recesses of the helical coil insert.
  • the coil free end forming section 2 having the configuration as described above can be formed by the same press working as that applied when forming the heads 4 and 5 and the recesses 6 and 7 of the conventional helical coil insert 10 (forming and notching steps). Each coil free end forming section 2 is formed usually in alignment with the axial line of the wire 1.
  • the wire 1 is continuously fed to a coil manufacturing machine so that the aforementioned coil free end forming section 2 is positioned on the inner periphery side during coiling.
  • the coil manufacturing machine may be one commonly in use.
  • the wire 1 fed to the coil manufacturing machine is clamped at the tip thereof by a clamping means of the coil manufacturing machine, or as required, coiled into a coil without clamping.
  • the wire Upon completion of coiling a coil with a prescribed number of turns, the wire is cut for separation from the coupling section 3, and thus, as shown in Fig. 2(b), the helical coil insert 10 already provided with the heads 4 and 5 and the recesses 6 and 7 is manufactured. After completion of the manufacture of a helical coil insert 10, the next wire 1 is fed in succession to the coil manufacturing machine to carry out the next operation of coiling for the manufacture of the next helical coil insert 10.
  • the wire 1 fed to the coil manufacturing machine already has heads and recesses formed thereon. It is therefore only required to apply coil head working to a minimum extent as required to the wire fed to the coil manufacturing machine, thus permitting remarkable improvement of productivity as compared with the conventional manufacturing method.
  • a plurality of helical coil inserts 10 are continuously manufactured as shown in Fig. 2(c) by feeding the wire 1 continuously to the coil manufacturing machine. Then, the helical coil inserts 10 are individually separated, as shown in Fig. 2(b), by cutting and separating this continuous helical coil insert 10 into individual helical coil inserts at the position of the coupling section 3 of the coil free end forming sections. Subsequently, as required, finish working may be applied to make the heads 4 and 5 of each helical coil insert 10 smoother.
  • helical coil inserts are manufactured continuously, and then, it is sufficient to separate the helical coil insert into individual pieces, leading to a remarkably improved productivity. Further, since the head 4 of one helical coil insert 10 is connected to the head 5 of the next helical coil insert via the coupling section 3, it is possible to smoothly form a coil without the risk of breaking the free end forming section of the helical coil insert, and this provides the advantage of further improved productivity.
  • the cross-sectional shape of the wire 1 of the invention is not limited to this, but the wire of the invention may take any arbitrary shape such as a rectangle, a circle or a triangle.
  • Fig. 3 illustrates another embodiment of the wire rod 1 according to the present invention.
  • the coil free end forming section 2 may be a notch 8 comprising a first and a second slants 8a and 8b which extend in directions leaving each other along the longitudinal axial direction of the wire 1 to the outer periphery of the wire 1, as shown in Fig. 3(a).
  • coil free end forming sections 2 are usually arranged in alignment with the axial line of the wire 1 at prescribed intervals in the axial direction of the wire 1.
  • wire 1 of the invention suitably permits manufacture of a tanged helical coil insert 10T provided with a notch 8 as shown in Fig. 3(c) on the coil innerperiphery.
  • the wire 1 is continuously fed to a coil manufacturing machine so that the aforementioned coil free end forming section 2, i.e., the notch 8 is positioned on the inner periphery side during the coiling operation.
  • the coil manufacturing machine may be one commonly in use.
  • the wire 1 fed to the coil manufacturing machine is clamped at the tip thereof by a clamping means of the coil manufacturing machine as shown in Fig.3(b) to form a tang, and thereafter, the wire 1 is coiled.
  • the wire 1 Upon completion of a coiling into a coil having a prescribed number of turns, the wire 1 is cut for separation at a position a prescribed distance prior to the next notch 8 position, thereby manufacturing a tanged helical coil insert 10T having a notch already formed at a first coil portion in the proximity to a tang 11, as shown in Fig. 3(c).
  • the wire 1 After manufacture of one tanged helical coil insert 10T, the wire 1 is continuously fed to the coil manufacturing machine for the next operations of tang forming and coiling for the manufacture of the next tanged helical coil insert 10T.
  • the notch 8 is formed on the inner periphery of the coil.
  • a notch is thus formed on the coil inner periphery, there is provided the advantage of easier removal of the tang 11 after fixing the helical coil insert 10T into a tap hole 101 of the work 100.
  • the wire 1 has a diamond-shaped cross-section, but the cross-section may have any arbitrary shape such as a rectangle, a circle or a triangle.
  • the present invention provides a wire for the manufacture of a helical coil insert having a configuration comprising coil free end forming sections formed at prescribed intervals of length in the axial direction of a wire, the coil free end forming sections having a first and a second convergent sections extending in directions leaving each other along the axial direction of the wire to reach the outer periphery of the wire rod and a first and a second recesses formed respectively adjacently to the first and second convergent sections, or coil free end forming sections having a notch comprising a first and a second slants extending in directions leaving each other along the axial direction of the wire to reach the exterior shape of the wire. It is therefore possible, by the use thereof in the manufacture of a helical coil inert, to continuously manufacture a helical coil insert at a very high efficiency, thus permitting the remarkable improvement of productivity of helical coil inserts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
EP20000300113 1999-06-16 2000-01-10 Draht für Gewindeeinsätze Expired - Lifetime EP1060812B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP17027599 1999-06-16
JP17027599A JP4018844B2 (ja) 1999-06-16 1999-06-16 螺旋状コイルインサートの製造方法

Publications (3)

Publication Number Publication Date
EP1060812A2 true EP1060812A2 (de) 2000-12-20
EP1060812A3 EP1060812A3 (de) 2001-11-28
EP1060812B1 EP1060812B1 (de) 2003-09-17

Family

ID=15901936

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000300113 Expired - Lifetime EP1060812B1 (de) 1999-06-16 2000-01-10 Draht für Gewindeeinsätze

Country Status (4)

Country Link
EP (1) EP1060812B1 (de)
JP (1) JP4018844B2 (de)
CA (1) CA2295256C (de)
DE (1) DE60005249T2 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002076651A1 (en) * 2001-03-23 2002-10-03 Newfrey Llc Cold head stamped fastener inserts including selectively removable tangs
US9719546B2 (en) 2010-11-08 2017-08-01 Böllhoff Verbindungstechnik GmbH Wire thread insert with redressable mounting tang as well as its manufacturing and installation
FR3102708A1 (fr) * 2019-11-04 2021-05-07 Skf Aerospace France Interface de fixation d’une première pièce sur une deuxième pièce comprenant une collerette en matériaux composite, palier complet comprenant une telle interface et procédé de fabrication d’une telle interface

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022087907A (ja) 2020-12-02 2022-06-14 株式会社ジャノメ インサート供給装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1862992A (en) * 1929-06-14 1932-06-14 Gen Motors Corp Coil spring
GB682135A (en) * 1950-02-27 1952-11-05 B E V I Bulloneria E Viteria I Improvements in or relating to the drawing of wire or rod
GB1015300A (en) * 1964-10-14 1965-12-31 Heli Coil Corp Wire coil screw thread insert
JPS58112621A (ja) * 1981-12-25 1983-07-05 High Frequency Heattreat Co Ltd 冷間成形コイルばね用切断ナイフ
US4563119A (en) * 1984-02-21 1986-01-07 Rexnord Inc. Hook cutout for tangless helically coiled insert
US4645398A (en) * 1983-09-16 1987-02-24 Rexnord Inc. Tangless helically coiled insert
DE4129172A1 (de) * 1991-09-03 1993-03-11 Saar Federn Gmbh Verfahren zum haspeln von bunden mit konzentrischen windungen aus walzhartem, verguetetem oder auf andere weise waermebehandeltem draht mit sich periodisch veraendernden drahtdurchmessern

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1862992A (en) * 1929-06-14 1932-06-14 Gen Motors Corp Coil spring
GB682135A (en) * 1950-02-27 1952-11-05 B E V I Bulloneria E Viteria I Improvements in or relating to the drawing of wire or rod
GB1015300A (en) * 1964-10-14 1965-12-31 Heli Coil Corp Wire coil screw thread insert
JPS58112621A (ja) * 1981-12-25 1983-07-05 High Frequency Heattreat Co Ltd 冷間成形コイルばね用切断ナイフ
US4645398A (en) * 1983-09-16 1987-02-24 Rexnord Inc. Tangless helically coiled insert
US4563119A (en) * 1984-02-21 1986-01-07 Rexnord Inc. Hook cutout for tangless helically coiled insert
DE4129172A1 (de) * 1991-09-03 1993-03-11 Saar Federn Gmbh Verfahren zum haspeln von bunden mit konzentrischen windungen aus walzhartem, verguetetem oder auf andere weise waermebehandeltem draht mit sich periodisch veraendernden drahtdurchmessern

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 217 (M-245), 27 September 1983 (1983-09-27) & JP 58 112621 A (KOUSHIYUUHA NETSUREN KK), 5 July 1983 (1983-07-05) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002076651A1 (en) * 2001-03-23 2002-10-03 Newfrey Llc Cold head stamped fastener inserts including selectively removable tangs
US6561913B2 (en) * 2001-03-23 2003-05-13 Newfrey Llc Cold head stamped fastener inserts including selectively removable tangs
US9719546B2 (en) 2010-11-08 2017-08-01 Böllhoff Verbindungstechnik GmbH Wire thread insert with redressable mounting tang as well as its manufacturing and installation
FR3102708A1 (fr) * 2019-11-04 2021-05-07 Skf Aerospace France Interface de fixation d’une première pièce sur une deuxième pièce comprenant une collerette en matériaux composite, palier complet comprenant une telle interface et procédé de fabrication d’une telle interface
US11415176B2 (en) 2019-11-04 2022-08-16 SKF Aerospace France S.A.S Interface for fastening a first component to a second component comprising a collar made from composite material, bearing unit comprising such an interface and method for manufacturing such an interface

Also Published As

Publication number Publication date
CA2295256C (en) 2007-08-21
JP2000356212A (ja) 2000-12-26
DE60005249T2 (de) 2004-07-15
DE60005249D1 (de) 2003-10-23
CA2295256A1 (en) 2000-12-16
JP4018844B2 (ja) 2007-12-05
EP1060812A3 (de) 2001-11-28
EP1060812B1 (de) 2003-09-17

Similar Documents

Publication Publication Date Title
EP0228981B1 (de) Schraubenförmig gewundener Einsatz ohne Griff
US6609866B2 (en) Expandable metal body for an expansion bolt
US5503596A (en) Method of manufacturing tee nuts
EP0157715B1 (de) Hakenförmiger Schnitt für schraubenförmig gewundene Einsätze ohne Griffe
HUT76966A (hu) Ásószerű fúrófej, valamint eljárás és berendezés ilyen fúrófejek, és hasonló fém alkatrészek előállítására
US6171040B1 (en) Thread insert having detachable tongue
EP1060812B1 (de) Draht für Gewindeeinsätze
US4356719A (en) Mandrel jaw and method of manufacture
EP0140812B1 (de) Schraubenförmig gewundener Einsatz ohne Griff
US7080432B2 (en) Piston pin spiral or wire lock ring insertion tool
EP3173634B1 (de) Blindniet und befestigungsverfahren dafür
CN219025610U (zh) 具有多头螺纹的冲头和拉拔螺柱的组合体
EP1707828A1 (de) Gewindeeinsatz mit verbesserter Entfernbarkeit
US2454829A (en) Electrical connector
JP4030750B2 (ja) タング無し螺旋状コイルインサートの製造方法
EP1372882B1 (de) Befestigungseinsätze mit selektiv entfernbaren zapfen
EP0648558A1 (de) Methode und Gerät zum Formen eines Kopfes an einem Befestigungselement und ein Befestigungselement so geformt
JP2007211991A (ja) 螺旋状コイルインサート用線材
EP0832703A1 (de) Verfahren zur Herstellung metallischer Bauteile mit Innengewinden und Maschine dafür
GB2052963A (en) Brush tuft element
EP0707156A1 (de) Befestigungsvorrichtung

Legal Events

Date Code Title Description
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

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20010627

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

AKX Designation fees paid

Free format text: DE FR GB IT

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HONDO, FUSAHIDE

REF Corresponds to:

Ref document number: 60005249

Country of ref document: DE

Date of ref document: 20031023

Kind code of ref document: P

ET Fr: translation filed
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

26N No opposition filed

Effective date: 20040618

PGRI Patent reinstated in contracting state [announced from national office to epo]

Ref country code: IT

Effective date: 20110501

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 60005249

Country of ref document: DE

Representative=s name: MAI DOERR BESIER PATENTANWAELTE, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 60005249

Country of ref document: DE

Representative=s name: MAI DOERR BESIER EUROPEAN PATENT ATTORNEYS - E, DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 19

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

Ref country code: GB

Payment date: 20181112

Year of fee payment: 20

Ref country code: FR

Payment date: 20181120

Year of fee payment: 20

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

Ref country code: IT

Payment date: 20181130

Year of fee payment: 20

Ref country code: DE

Payment date: 20190201

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 60005249

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20200109

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 EXPIRATION OF PROTECTION

Effective date: 20200109