IE37620L - Self-tapping threaded fastener. - Google Patents

Self-tapping threaded fastener.

Info

Publication number
IE37620L
IE37620L IE730741A IE74173A IE37620L IE 37620 L IE37620 L IE 37620L IE 730741 A IE730741 A IE 730741A IE 74173 A IE74173 A IE 74173A IE 37620 L IE37620 L IE 37620L
Authority
IE
Ireland
Prior art keywords
lobes
tapering
self
die
shank portion
Prior art date
Application number
IE730741A
Other versions
IE37620B1 (en
Original Assignee
Usm Corp
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 Usm Corp filed Critical Usm Corp
Priority to IE167/75A priority Critical patent/IE39132B1/en
Publication of IE37620L publication Critical patent/IE37620L/en
Publication of IE37620B1 publication Critical patent/IE37620B1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/027—Rolling of self-tapping screws
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
    • F16B25/0021—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the material being metal, e.g. sheet-metal or aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F16B25/0052—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the ridge having indentations, notches or the like in order to improve the cutting behaviour

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Forging (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

1376585 Self-tapping screws; making selftapping screws; rolling USM CORP 23 May 1973 [24 May 1972] 24779/73 Headings B3N B3A and B3M A self-tapping threaded fastener comprises a cylindrical shank portion 10 and a tapering work-entering portion 16, a continuous thread being formed on the tapering portion and part of the shank portion, there being lobes 30 superimposed on the thread on the tapering portion and are arranged such that their radial extent diminishes as they approach the junction between the tapering and shank portions so that they do not extend radially beyond the crest of the thread on the shank portion. The lobes are arranged in rows. The fastener is rolled by primary die 42 and secondary die 44. Each die has a flat region 46 for rolling the shank portion and an inclined taper rolling region 52. Recesses for the lobes are arranged in rows and are all on the primary die. The dies also have reroll regions 61, 60 which act on the lobes to ensure they have the correct radial projection. [GB1376585A]
IE741/73A 1972-05-24 1973-05-10 Improvements in or relating to fasteners IE37620B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IE167/75A IE39132B1 (en) 1972-05-24 1973-05-10 Improvements in or relating to fasteners

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25637072A 1972-05-24 1972-05-24

Publications (2)

Publication Number Publication Date
IE37620L true IE37620L (en) 1973-11-24
IE37620B1 IE37620B1 (en) 1977-08-31

Family

ID=22972001

Family Applications (1)

Application Number Title Priority Date Filing Date
IE741/73A IE37620B1 (en) 1972-05-24 1973-05-10 Improvements in or relating to fasteners

Country Status (18)

Country Link
AT (1) AT339118B (en)
BE (1) BE799936A (en)
CA (1) CA977192A (en)
CH (1) CH572165A5 (en)
DE (2) DE2322351A1 (en)
ES (1) ES415433A1 (en)
FI (2) FI58819C (en)
FR (1) FR2186084A5 (en)
GB (2) GB1376585A (en)
HK (2) HK65878A (en)
IE (1) IE37620B1 (en)
IL (1) IL42270A0 (en)
IT (1) IT987827B (en)
LU (1) LU67649A1 (en)
NL (1) NL174914C (en)
NO (2) NO139343C (en)
SE (1) SE397394B (en)
ZA (1) ZA733514B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2703433A1 (en) * 1977-01-28 1978-12-07 Schumacher Wilhelm Kg THREAD FORMING SCREW AND METHOD OF MANUFACTURING THE SAME AND ROLLING JAW FOR PERFORMING THE METHOD
DE2844412C2 (en) * 1978-10-12 1986-03-27 Standard Elektrik Lorenz Ag, 7000 Stuttgart Cup-shaped housing for electrical components
US4411147A (en) * 1981-08-12 1983-10-25 Russell Burdsall & Ward Corporation Rolling dies and method of forming the same
DE102022121435A1 (en) * 2022-08-24 2024-02-29 Ejot Se & Co. Kg Screw for direct screwing into a component
DE102022121434A1 (en) * 2022-08-24 2024-02-29 Ejot Se & Co. Kg Screw for direct screwing into a component

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2348850A (en) * 1939-05-03 1944-05-16 Groov Pin Corp Art of screw rolling
FR1337952A (en) * 1961-10-25 1963-09-20 Gen Am Transport Groove-less tapping tools and manufacturing processes
US3426642A (en) * 1962-02-05 1969-02-11 Res Eng & Mfg Self-tapping screws with threadforming projections
US3504722A (en) * 1968-11-20 1970-04-07 Lamson & Sessions Co Thread forming and locking fastener

Also Published As

Publication number Publication date
ES415433A1 (en) 1976-02-16
NL7307022A (en) 1973-11-27
AT339118B (en) 1977-10-10
SE397394B (en) 1977-10-31
NL174914C (en) 1984-09-03
BE799936A (en) 1973-09-17
FI58819B (en) 1980-12-31
HK65778A (en) 1978-11-24
NO139343C (en) 1979-02-21
NL174914B (en) 1984-04-02
FI58819C (en) 1981-04-10
FI801888A7 (en) 1981-01-01
AU5598073A (en) 1974-11-28
DE2322351A1 (en) 1973-12-06
CA977192A (en) 1975-11-04
LU67649A1 (en) 1973-07-26
ZA733514B (en) 1974-11-27
DE2322351C2 (en) 1990-08-23
CH572165A5 (en) 1976-01-30
NO139343B (en) 1978-11-13
ATA448573A (en) 1977-01-15
GB1376586A (en) 1974-12-04
GB1376585A (en) 1974-12-04
NO750695L (en) 1973-11-27
IL42270A0 (en) 1973-07-30
IE37620B1 (en) 1977-08-31
HK65878A (en) 1978-11-24
FR2186084A5 (en) 1974-01-04
IT987827B (en) 1975-03-20

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