WO2007121081A2 - High performance thread forming screw - Google Patents

High performance thread forming screw Download PDF

Info

Publication number
WO2007121081A2
WO2007121081A2 PCT/US2007/065828 US2007065828W WO2007121081A2 WO 2007121081 A2 WO2007121081 A2 WO 2007121081A2 US 2007065828 W US2007065828 W US 2007065828W WO 2007121081 A2 WO2007121081 A2 WO 2007121081A2
Authority
WO
WIPO (PCT)
Prior art keywords
screw
threads
thread forming
hardness
recited
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.)
Ceased
Application number
PCT/US2007/065828
Other languages
English (en)
French (fr)
Other versions
WO2007121081A3 (en
Inventor
David R. Price
Gary Shattuck
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.)
Acument Intellectual Properties LLC
Original Assignee
Acument Intellectual Properties LLC
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 EP07759995.9A priority Critical patent/EP2007990B1/en
Application filed by Acument Intellectual Properties LLC filed Critical Acument Intellectual Properties LLC
Priority to PL07759995T priority patent/PL2007990T3/pl
Priority to BRPI0711260-2A priority patent/BRPI0711260B1/pt
Priority to AU2007238300A priority patent/AU2007238300B2/en
Priority to MX2008013278A priority patent/MX2008013278A/es
Priority to JP2009506673A priority patent/JP2009533635A/ja
Priority to ES07759995.9T priority patent/ES2488414T3/es
Priority to CA2646356A priority patent/CA2646356C/en
Publication of WO2007121081A2 publication Critical patent/WO2007121081A2/en
Anticipated expiration legal-status Critical
Priority to KR1020087027844A priority patent/KR101263539B1/ko
Publication of WO2007121081A3 publication Critical patent/WO2007121081A3/en
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0093—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for screws; for bolts
    • 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
    • F16B33/00—Features common to bolt and nut
    • F16B33/06—Surface treatment of parts furnished with screw-thread, e.g. for preventing seizure or fretting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the present invention generally relates to thread forming screws and methods
  • a thread forming screw be able to form threads in a workpiece which has a hardness
  • material is formed, such as by punching holes in the material, the hardness in and
  • the core of the fastener is at Rockwell C33 to 39 hardness.
  • HSLA material such as HSLA material or any other material, which has a hardness which exceeds
  • the shank are surface hardened, preferably to a minimum surface hardness of HRC 56,
  • Another aspect of the present invention provides a method of forming such a
  • the method includes performing a heat treating process
  • the screw is carbon enriched to at least a 0.48 carbon level, and is quenched
  • the screw is tempered in order to lower the brittleness and to
  • the tempering is controlled such that the
  • both the surface and core of the fastener are at a
  • this tempering step is controlled such that, for
  • the lead threads and the first three to four full threads are at a Rockwell C56
  • minimum hardness preferably to a depth of at least 0.008 inches, and the core of the
  • fastener is at Rockwell C33 to 39 hardness. Finally, preferably a finish is applied to
  • Figure l is a side view of one type of screw which can be surface hardened in
  • FIG. 2 is a partial cross-sectional diagram of the screw shown in Figure 1;
  • Figure 3 is a flow chart illustrating a method of making a surface hardened
  • 3,935,785 discloses a screw with which a method in accordance with an embodiment
  • this step is
  • the screw is tempered, such as at 300 degrees Fahrenheit for a
  • minimum hardness preferably to a depth of at least 0.008 inches, and the core of the
  • fastener is at Rockwell C33 to 39 hardness. While different tempering temperatures
  • lead threads and the first three or four full threads have a minimum surface hardness
  • Another aspect of the present invention provides a method of surface hardening
  • Still another aspect of the present invention provides a product by process

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Forging (AREA)
PCT/US2007/065828 2006-04-17 2007-04-03 High performance thread forming screw Ceased WO2007121081A2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
CA2646356A CA2646356C (en) 2006-04-17 2007-04-03 High performance thread forming screw
PL07759995T PL2007990T3 (pl) 2006-04-17 2007-04-03 Sposób formowania wysokiej jakości śrub do formowania gwintu
BRPI0711260-2A BRPI0711260B1 (pt) 2006-04-17 2007-04-03 Método para formar um parafuso com formação de rosca
AU2007238300A AU2007238300B2 (en) 2006-04-17 2007-04-03 High performance thread forming screw
MX2008013278A MX2008013278A (es) 2006-04-17 2007-04-03 Tornillo roscador de alto rendimiento.
EP07759995.9A EP2007990B1 (en) 2006-04-17 2007-04-03 Method of forming a high performance thread forming screw
ES07759995.9T ES2488414T3 (es) 2006-04-17 2007-04-03 Método de formación de un tornillo autorroscante de alto rendimiento
JP2009506673A JP2009533635A (ja) 2006-04-17 2007-04-03 高性能のネジ部形成用ネジ
KR1020087027844A KR101263539B1 (ko) 2006-04-17 2008-11-14 고성능 나사산 성형 스크루 제작 방법

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US74497406P 2006-04-17 2006-04-17
US60/744,974 2006-04-17
US11/695,341 2007-04-02
US11/695,341 US20070243043A1 (en) 2006-04-17 2007-04-02 High performance thread forming screw

Publications (2)

Publication Number Publication Date
WO2007121081A2 true WO2007121081A2 (en) 2007-10-25
WO2007121081A3 WO2007121081A3 (en) 2008-11-27

Family

ID=38604987

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/065828 Ceased WO2007121081A2 (en) 2006-04-17 2007-04-03 High performance thread forming screw

Country Status (11)

Country Link
US (2) US20070243043A1 (enExample)
EP (1) EP2007990B1 (enExample)
JP (2) JP2009533635A (enExample)
KR (1) KR101263539B1 (enExample)
AU (1) AU2007238300B2 (enExample)
BR (1) BRPI0711260B1 (enExample)
CA (1) CA2646356C (enExample)
ES (1) ES2488414T3 (enExample)
MX (1) MX2008013278A (enExample)
PL (1) PL2007990T3 (enExample)
WO (1) WO2007121081A2 (enExample)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3032205B1 (ja) 1999-06-04 2000-04-10 株式会社 大同分析リサーチ 非磁性高強度合金
US20070243043A1 (en) * 2006-04-17 2007-10-18 Acument Intellectual Properties, Llc High performance thread forming screw
US20080163728A1 (en) * 2007-01-05 2008-07-10 Snap-On Incorporated Dual hardness connector
US8419332B2 (en) 2007-10-19 2013-04-16 Atlas Bolt & Screw Company Llc Non-dimpling fastener
US8529178B2 (en) * 2010-02-19 2013-09-10 Nucor Corporation Weldless building structures
US9004835B2 (en) * 2010-02-19 2015-04-14 Nucor Corporation Weldless building structures
DE102010063677A1 (de) * 2010-12-21 2012-06-21 Hilti Aktiengesellschaft Verfahren zur Herstellung eines Schraubankers und Schraubanker
US20130206513A1 (en) * 2012-02-14 2013-08-15 Carterpillar Inc. Linkage pin assembly
AU2013205904B2 (en) * 2012-05-17 2017-12-07 Woodstock Percussion Pty Ltd Full Strength Threaded Bar
JP6247477B2 (ja) * 2012-08-31 2017-12-13 日東精工株式会社 高周波焼入タッピンねじ
WO2015029266A1 (ja) * 2013-08-30 2015-03-05 日東精工株式会社 高周波焼入タッピンねじ
US9731172B2 (en) 2014-12-09 2017-08-15 Dunlop Sports Co., Ltd Sporting apparatus with monitoring device
CA3211072A1 (en) 2016-05-02 2017-11-02 Asia Fastening (Us), Inc. Double threaded standoff fastener
GB201618301D0 (en) * 2016-10-28 2016-12-14 Excalibur Screwbolts Ltd Improvements in or relating to screwbolts
CN106736309A (zh) * 2017-02-23 2017-05-31 河北顶创金属制品有限公司 一种螺钉加工工艺
US11028457B2 (en) * 2017-07-17 2021-06-08 Caterpillar Inc. Method of heat treating a fastening member
EP3536812A1 (de) * 2018-03-08 2019-09-11 HILTI Aktiengesellschaft Bimetallschraube mit martensitisch härtbarem stahl
DE102020102982A1 (de) * 2020-02-05 2021-08-05 Böllhoff Verbindungstechnik GmbH Fügeelement, Verbindungsstruktur mit dem Fügeelement, Herstellungsverfahren des Fügeelements und entsprechendes Verbindungsverfahren
TW202136656A (zh) * 2020-03-18 2021-10-01 美商工程組件公司 螺紋緊固件及其製作方法
CN112522492B (zh) * 2020-10-28 2022-11-01 浙江自紧王机械有限公司 一种自紧螺母及自紧垫片的热处理工艺
CN113404757A (zh) * 2021-06-29 2021-09-17 嘉兴市一鼎机电科技有限公司 一种核电用螺栓及其生产工艺

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1054170A2 (en) 1999-05-21 2000-11-22 Hiroshi Onoe High strength screw
DE10113946A1 (de) 2001-03-22 2002-09-26 Toge Duebel A Gerhard Kg Selbstschneidende Schraube, insbesondere Betonschraube, aus Stahl

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH218873A (de) * 1939-06-07 1942-01-15 Barmag Barmer Maschf Verfahren zur Herstellung von zylindrischen Kunstseidenwickeln.
US3769103A (en) * 1971-03-25 1973-10-30 Res Eng & Mfg Method of heat treating articles
US3836743A (en) * 1973-02-22 1974-09-17 Res Eng & Mfg Localized heat treating machine
US3894570A (en) * 1973-04-23 1975-07-15 Dumont Aviat Associates Self-tapping fastener
US3972084A (en) * 1973-04-23 1976-08-03 Litton Fastening Systems Fastener manufacturing method
US3835785A (en) * 1973-11-26 1974-09-17 Goodyear Tire & Rubber Switching apparatus for transportation system
US3935785A (en) * 1974-01-03 1976-02-03 Rockford Headed Products, Inc. Thread swaging screw
US4021274A (en) * 1975-03-26 1977-05-03 Russell, Birdsall & Ward, Inc. Method for heat treating by induced current
US4233880A (en) * 1978-07-20 1980-11-18 Illinois Tool Works Inc. Stainless steel drill screw
US4842467A (en) * 1984-08-24 1989-06-27 Yamashina Seiko-Sho, Ltd. Concrete screw
HU206367B (en) * 1988-04-30 1992-10-28 Sandoz Ag Process for producing acid addition salts of steroid carboxylic acid-amidated taurine and glycine, as well as pharmaceutical compositions comprising such salts
US5000639A (en) * 1989-01-24 1991-03-19 Paul B. Elswick Self-threading bolt
US5211520A (en) * 1992-07-02 1993-05-18 Mckinney Blake Self-threading fastener
US6035495A (en) * 1998-08-11 2000-03-14 Builder's Best, Inc. Hose clamp
JP2001247937A (ja) * 1999-05-21 2001-09-14 Koji Onoe 高強度ねじ及び高強度ねじ用鋼
US6213884B1 (en) * 1999-10-20 2001-04-10 Daimlerchrysler Corporation Case hardened self-drilling, self-tapping, self-piercing fasteners and process for making the same
US6338600B2 (en) * 1999-11-15 2002-01-15 Ejot Verbindungstechnik Gmbh & Co. Kg Self-tapping, corrosion-resistant screw with hardened tip
JP4313983B2 (ja) * 2002-04-18 2009-08-12 Ｊｆｅスチール株式会社 靭性および準高温域での転動疲労寿命に優れる肌焼き軸受け用鋼
JP4188010B2 (ja) * 2002-07-04 2008-11-26 有限会社新城製作所 耐熱ドリルねじ
DE10315957A1 (de) * 2003-04-08 2004-10-28 Ejot Gmbh & Co. Kg Schraube mit einer partiell gehärteten Funktionsspitze und Verfahren zu ihrer Herstellung
JP5319866B2 (ja) * 2004-05-24 2013-10-16 株式会社小松製作所 転動部材およびその製造方法
JP2006016648A (ja) * 2004-06-30 2006-01-19 Hino Motors Ltd タップ形成ボルト
US20070243043A1 (en) * 2006-04-17 2007-10-18 Acument Intellectual Properties, Llc High performance thread forming screw

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1054170A2 (en) 1999-05-21 2000-11-22 Hiroshi Onoe High strength screw
DE10113946A1 (de) 2001-03-22 2002-09-26 Toge Duebel A Gerhard Kg Selbstschneidende Schraube, insbesondere Betonschraube, aus Stahl

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2007990A4

Also Published As

Publication number Publication date
AU2007238300A1 (en) 2007-10-25
AU2007238300B2 (en) 2012-04-19
US20090286608A1 (en) 2009-11-19
MX2008013278A (es) 2008-10-28
PL2007990T3 (pl) 2014-12-31
EP2007990A4 (en) 2011-12-21
BRPI0711260A2 (pt) 2011-08-30
KR20080110677A (ko) 2008-12-18
BRPI0711260B1 (pt) 2019-09-17
JP2012187638A (ja) 2012-10-04
EP2007990B1 (en) 2014-07-02
KR101263539B1 (ko) 2013-05-13
WO2007121081A3 (en) 2008-11-27
EP2007990A2 (en) 2008-12-31
US8172692B2 (en) 2012-05-08
BRPI0711260A8 (pt) 2018-02-06
CA2646356C (en) 2013-10-08
US20070243043A1 (en) 2007-10-18
JP5522548B2 (ja) 2014-06-18
JP2009533635A (ja) 2009-09-17
ES2488414T3 (es) 2014-08-27
CA2646356A1 (en) 2007-10-25

Similar Documents

Publication Publication Date Title
AU2007238300B2 (en) High performance thread forming screw
CN101501350A (zh) 高性能自攻锁紧螺钉
US6338600B2 (en) Self-tapping, corrosion-resistant screw with hardened tip
USRE33901E (en) Breakable composite drill screw
EP1109637B1 (de) Selbstgewindeformende schraube aus leichtmetall und verfahren zu ihrer herstellung
US7438773B2 (en) Method of manufacturing a blind threaded insert
CN1274812A (zh) 高强度螺钉
US7632053B2 (en) Method for the production of a screw, and screw produced according to said method
US20040154705A1 (en) Fastening element made of carbon-containing steel and method for the production thereof
US6213884B1 (en) Case hardened self-drilling, self-tapping, self-piercing fasteners and process for making the same
US10662993B2 (en) High-strength screw including an unhardened thread end
EP2080572B9 (en) Method for cold forging high strength fastener from austenitic 300 series material
US10598207B2 (en) High-strength screw including an unhardening layer
US20210293267A1 (en) Threaded fastener
WO2015029266A1 (ja) 高周波焼入タッピンねじ
JP2007298110A (ja) もみ切り式自己穿孔ねじ及びその製造方法
JP2007298141A (ja) ドリルねじ及びその製造方法
HK1032432B (en) High strength screw

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200780013867.9

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07759995

Country of ref document: EP

Kind code of ref document: A2

WWE Wipo information: entry into national phase

Ref document number: 2646356

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: MX/a/2008/013278

Country of ref document: MX

WWE Wipo information: entry into national phase

Ref document number: 2009506673

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2007759995

Country of ref document: EP

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2007238300

Country of ref document: AU

Ref document number: 1020087027844

Country of ref document: KR

ENP Entry into the national phase

Ref document number: 2007238300

Country of ref document: AU

Date of ref document: 20070403

Kind code of ref document: A

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
ENP Entry into the national phase

Ref document number: PI0711260

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20081016