GB1374915A - Formation of nuts - Google Patents

Formation of nuts

Info

Publication number
GB1374915A
GB1374915A GB943572A GB943572A GB1374915A GB 1374915 A GB1374915 A GB 1374915A GB 943572 A GB943572 A GB 943572A GB 943572 A GB943572 A GB 943572A GB 1374915 A GB1374915 A GB 1374915A
Authority
GB
United Kingdom
Prior art keywords
coil
casing
nut
welding
bush
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
GB943572A
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.)
Goering A H
Hattan M Green W P
Original Assignee
Goering A H
Hattan M Green W P
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
Priority to US12181771A priority Critical
Application filed by Goering A H, Hattan M Green W P filed Critical Goering A H
Publication of GB1374915A publication Critical patent/GB1374915A/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B39/00Locking of screws, bolts or nuts
    • F16B39/22Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K15/00Electron-beam welding or cutting
    • B23K15/0046Welding
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B37/00Nuts or like thread-engaging members
    • F16B37/12Nuts or like thread-engaging members with thread-engaging surfaces formed by inserted coil-springs, discs, or the like; Independent pieces of wound wire used as nuts; Threaded inserts for holes

Abstract

1374915 Making lock nuts; welding by fusion M HATTAN W P GREEN and A H GOERING 1 March 1972 [8 March 1971] 9435/72 Headings B3A and B3R [Also in Division F2] A nut 10 is formed by locating within a casing 12 a helical metal coil 13 shaped internally to form a screw thread and being in a workhardened condition, and welding the radially outer portion of the coil to the casing 12 by locally heating said outer portion to a temperature locally adversely affecting the workhardened condition of the coil outer portion, while maintaining the radially inner portion of the coil at a temperature low enough to avoid destroying said work-hardened condition. The coil 13 is formed by drawing a circular wire 20 through a forming machine 21 to produce the cross-section shown and to work-harden the wire, and forcing the wire against a die 23, the wire being sheared by a cutter 24 after 5“ turns have been formed. The coil 13 and an end bush 14 are placed in the casing 12 and the assembly clamped between plates 41, 42, a packing washer 53 and a spring washer 55 under the plate 41 ensuring that the casing 12 and coil 13 are pressed firmly against the bush 14. A copper or aluminium mandrel 45 is screwed into the coil 13 to provide a heat sink during welding. Laser or electron beam welding, using a gun 56, heats a tapering zone (shown by dotted lines in Fig. 1) to weld the coil and the bush to the casing 12, and to weld adjacent turns of the coil 13 together at their radially outer portions. The upper coil 13<SP>1</SP> is not welded. After welding the nut is removed from the tool 40 and is deformed radially inwardly at two diametrically opposite points adjacent its upper surface 18 by forging dies 59 to make the nut self-locking (Fig. 6). Finally the nut is heat treated at a temperature high enough to harden the casing 12, coil 13, and bush 14 without destroying the work-hardening of the thread portion of the coil. The casing may be of martenitic stainless steel and the coil may be of semi-austenitic stainless steel, both parts, except for the welded periphery of the coil, will in the completed nut be in heat hardened martensitic condition.
GB943572A 1971-03-08 1972-03-01 Formation of nuts Expired GB1374915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12181771A true 1971-03-08 1971-03-08

Publications (1)

Publication Number Publication Date
GB1374915A true GB1374915A (en) 1974-11-20

Family

ID=22398991

Family Applications (1)

Application Number Title Priority Date Filing Date
GB943572A Expired GB1374915A (en) 1971-03-08 1972-03-01 Formation of nuts

Country Status (3)

Country Link
CA (1) CA975509A (en)
DE (1) DE2210472A1 (en)
GB (1) GB1374915A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101434021B (en) * 2007-11-12 2010-10-13 包明涛 Method for processing locknut of conical rotor motor
CN105127690A (en) * 2015-09-30 2015-12-09 河南柴油机重工有限责任公司 Machining tool and method for internal threads with ultra-large thread pitches
CN112222785A (en) * 2020-10-20 2021-01-15 苏州市正如懿电子科技有限公司 Copper nut machining process

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2603996C2 (en) * 1976-02-03 1984-11-15 Helmut Hofmann Screw-nut combination for high-strength pre-tensioned connections
FR2750747B1 (en) * 1996-07-04 1998-09-18 Snecma THREADED SOCKET AND ASSEMBLY WITH AN ADDED THREAD
DE102006030894A1 (en) * 2006-07-01 2008-01-03 Beltec Industrietechnik Gmbh Force transmission unit, e.g. for anchors in mining/tunneling, has a body of a compound fiber material and a reinforcement with a thread
CN101850495B (en) * 2010-05-25 2011-08-17 烟台开发区蓝鲸金属修复有限公司 Processing method of composite copper nuts
DE102016111933A1 (en) * 2016-06-29 2018-01-04 Sfs Intec Holding Ag Lightweight construction fastener with wire thread nut
CN111853037B (en) * 2020-07-22 2021-07-02 同济大学 Check bolt fastener

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101434021B (en) * 2007-11-12 2010-10-13 包明涛 Method for processing locknut of conical rotor motor
CN105127690A (en) * 2015-09-30 2015-12-09 河南柴油机重工有限责任公司 Machining tool and method for internal threads with ultra-large thread pitches
CN112222785A (en) * 2020-10-20 2021-01-15 苏州市正如懿电子科技有限公司 Copper nut machining process

Also Published As

Publication number Publication date
CA975509A (en) 1975-10-07
DE2210472A1 (en) 1972-09-28

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Legal Events

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