GB1442987A - Method of making headed fasteners - Google Patents

Method of making headed fasteners

Info

Publication number
GB1442987A
GB1442987A GB4353472A GB4353472A GB1442987A GB 1442987 A GB1442987 A GB 1442987A GB 4353472 A GB4353472 A GB 4353472A GB 4353472 A GB4353472 A GB 4353472A GB 1442987 A GB1442987 A GB 1442987A
Authority
GB
United Kingdom
Prior art keywords
heading
blank
stock
die
sizing
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
Application number
GB4353472A
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.)
GKN UK Investments Ltd
Original Assignee
GKN Bolts and Nuts 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
Application filed by GKN Bolts and Nuts Ltd filed Critical GKN Bolts and Nuts Ltd
Priority to GB4353472A priority Critical patent/GB1442987A/en
Publication of GB1442987A publication Critical patent/GB1442987A/en
Expired legal-status Critical Current

Links

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
    • B21K1/44—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)
  • Forging (AREA)

Abstract

1442987 Making headed fasteners; heading GKN BOLTS & NUTS Ltd 30 Oct 1973 [20 Sept 1972] 43534/72 Headings B3A and B3H A headed fastener, such as a bolt, rivet, set pin &c. is made from black bar stock steel by sizing the stock in a metal removing operation followed by a simple blow cold heading operation. The metal removing may be produced by turning or grinding. The black bar stock is initially straightened before being sized and blanks are cropped from the stock before or after sizing. The blank ends are turned and bevelled to produce a symmetrical end prior to heading. Before heading the blank is phosphated and lubricated. The heading tool 10 has a recess 11 which co-operates with a retaining ring 17 and a die 12 to shape the head. After heading the blank shank is extruded in a second die set with a stepped cylindrical die passage. The blank is ejected through the extrusion punch which trims the forged head. The blank shank is then thread rolled and heat treated if desired.
GB4353472A 1972-09-20 1972-09-20 Method of making headed fasteners Expired GB1442987A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4353472A GB1442987A (en) 1972-09-20 1972-09-20 Method of making headed fasteners

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4353472A GB1442987A (en) 1972-09-20 1972-09-20 Method of making headed fasteners

Publications (1)

Publication Number Publication Date
GB1442987A true GB1442987A (en) 1976-07-21

Family

ID=10429182

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4353472A Expired GB1442987A (en) 1972-09-20 1972-09-20 Method of making headed fasteners

Country Status (1)

Country Link
GB (1) GB1442987A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2234923A (en) * 1989-05-31 1991-02-20 Unifix Ltd Anchors
NL1004256C2 (en) * 1996-10-11 1998-04-15 Demu Metaalindustrie B V Method for making a mounting anchor as well as a mounting anchor.
CN103990748A (en) * 2014-05-28 2014-08-20 眉山南车紧固件科技有限公司 Pull rivet pin manufacturing method and die
CN107671218A (en) * 2017-10-30 2018-02-09 苏州工业园区新凯精密五金有限公司 A kind of cold-heading molding technique and cold-heading module for being used to manufacture double end tail cutting slot screw
CN112008030A (en) * 2020-09-27 2020-12-01 东风汽车紧固件有限公司 Semi-circular head bolt cold upsetting forming processing method and die thereof
IT202100014393A1 (en) * 2021-06-01 2022-12-01 Fabrica 47 S R L METHOD OF FORGING ITEMS

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2234923A (en) * 1989-05-31 1991-02-20 Unifix Ltd Anchors
NL1004256C2 (en) * 1996-10-11 1998-04-15 Demu Metaalindustrie B V Method for making a mounting anchor as well as a mounting anchor.
EP0835972A1 (en) * 1996-10-11 1998-04-15 Demu Metaalindustrie B.V. Method of making a fixing cramp, as well as a fixing cramp
CN103990748A (en) * 2014-05-28 2014-08-20 眉山南车紧固件科技有限公司 Pull rivet pin manufacturing method and die
CN103990748B (en) * 2014-05-28 2016-06-29 眉山南车紧固件科技有限公司 Staking pin manufacture method and mould
CN107671218A (en) * 2017-10-30 2018-02-09 苏州工业园区新凯精密五金有限公司 A kind of cold-heading molding technique and cold-heading module for being used to manufacture double end tail cutting slot screw
CN107671218B (en) * 2017-10-30 2024-04-09 苏州新凯紧固***有限公司 Cold heading forming process and cold heading module for manufacturing double-end tail groove cutting screw
CN112008030A (en) * 2020-09-27 2020-12-01 东风汽车紧固件有限公司 Semi-circular head bolt cold upsetting forming processing method and die thereof
IT202100014393A1 (en) * 2021-06-01 2022-12-01 Fabrica 47 S R L METHOD OF FORGING ITEMS

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee