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GB959647A - Method and apparatus for forming a drilling point and the article so formed - Google Patents

Method and apparatus for forming a drilling point and the article so formed

Info

Publication number
GB959647A
GB959647A GB3724/63A GB372463A GB959647A GB 959647 A GB959647 A GB 959647A GB 3724/63 A GB3724/63 A GB 3724/63A GB 372463 A GB372463 A GB 372463A GB 959647 A GB959647 A GB 959647A
Authority
GB
United Kingdom
Prior art keywords
jan
self
pair
groove
blank
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
GB3724/63A
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.)
Illinois Tool Works Inc
Original Assignee
Illinois Tool Works Inc
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 Illinois Tool Works Inc filed Critical Illinois Tool Works Inc
Publication of GB959647A publication Critical patent/GB959647A/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
    • 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
    • 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
    • F16B25/0084—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 geometric details of the tip
    • 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
    • F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
    • F16B25/103—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a drilling screw-point, i.e. with a cutting and material removing action

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Drilling Tools (AREA)
  • Forging (AREA)

Abstract

959,647. Self-tapping screws; forging. ILLINOIS TOOL WORKS Inc. Jan. 29, 1963 (Jan. 29, 1962], No. 3724/63. Headings B3H and B3N. A self-tapping screw 10 has a leading end 16 comprising four flat or cone-shaped faces 46, 48, 50, 52, a pair of spaced points 58, 60, and a groove 70 which extends down one side of end 16, and up the other, to form cutting edges 62, 64, 66, 68. End 16 is produced by a pair of identical dies 22, Figs. 2-6, which are moved towards the fastener blank 14, Fig. 2, to carry out a pinching operation and remove an end piece 20 from the blank. Each of the dies comprises a body 24 formed with a V-groove 25 having receding symmetrical side walls 26, 28, two vertical flat surfaces 30, 32, which terminate in a horizontal line 38 which passes through the apex of walls 26, 28, and a receding surface 34.
GB3724/63A 1962-01-29 1963-01-29 Method and apparatus for forming a drilling point and the article so formed Expired GB959647A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US169325A US3204516A (en) 1962-01-29 1962-01-29 Method and apparatus for forming a drilling point and the article so formed

Publications (1)

Publication Number Publication Date
GB959647A true GB959647A (en) 1964-06-03

Family

ID=22615185

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3724/63A Expired GB959647A (en) 1962-01-29 1963-01-29 Method and apparatus for forming a drilling point and the article so formed

Country Status (2)

Country Link
US (1) US3204516A (en)
GB (1) GB959647A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0102605B1 (en) * 1982-09-02 1986-08-13 Rockenfeller KG Befestigungselemente Wood-screw
JPH0135055Y2 (en) * 1985-07-26 1989-10-25
US5755542A (en) * 1996-08-06 1998-05-26 Elco Textron, Inc. Self-drilling/self-tapping fastener
US10865824B1 (en) 2006-04-07 2020-12-15 W. C. Litzinger Mushroom-compaction and asymmetric-thread impact-drivable screw
US9291183B2 (en) 2007-03-20 2016-03-22 W. C. Litzinger Mushroom-compaction and asymmetric-thread impact-drivable screw
US10197085B1 (en) 2006-04-07 2019-02-05 W. C. Litzinger Mushroom-compaction and asymmetric-thread impact-drivable screw
US20070258794A1 (en) * 2006-04-07 2007-11-08 Litzinger W C Mushroom-compaction and asymmetric-thread impact-drivable screw
DE102006026176A1 (en) 2006-05-29 2007-12-06 Adolf Würth GmbH & Co. KG Self-drilling screw
DE102012219121A1 (en) 2012-10-19 2014-05-08 Adolf Würth GmbH & Co. KG Method and pair of jaws for making a drill bit

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US335131A (en) * 1886-02-02 Manufacture of screw-nails
US45133A (en) * 1864-11-22 Improvement in screws
US507379A (en) * 1893-10-24 Robert naysmith
US681143A (en) * 1901-05-27 1901-08-20 Albert W W Miller Shoe-nail.
US1638230A (en) * 1925-12-28 1927-08-09 Delta Star Electric Co Clamping means
US1764053A (en) * 1928-06-15 1930-06-17 Reed And Prince Mfg Company Rolled-thread wood screw
US2175228A (en) * 1935-12-04 1939-10-10 Harry S Stronach Die construction for making non-splitting nails
US2347360A (en) * 1942-08-03 1944-04-25 American Screw Co Self-tapping screw
US2572647A (en) * 1945-02-09 1951-10-23 Milford Rivet And Machine Comp Self-threading fastener
US2558379A (en) * 1946-08-01 1951-06-26 Res Eng & Mfg Self-locking fastener

Also Published As

Publication number Publication date
US3204516A (en) 1965-09-07

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