WO2007121081A2 - High performance thread forming screw - Google Patents
High performance thread forming screw Download PDFInfo
- 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
Links
- 238000000034 method Methods 0.000 claims abstract description 35
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 26
- 230000006698 induction Effects 0.000 claims abstract description 17
- 238000010791 quenching Methods 0.000 claims abstract description 12
- 230000000171 quenching effect Effects 0.000 claims abstract description 10
- 238000005496 tempering Methods 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000003921 oil Substances 0.000 claims description 3
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- 239000005864 Sulphur Substances 0.000 claims description 2
- 230000005684 electric field Effects 0.000 claims description 2
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 239000011572 manganese Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 19
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 101150075267 FTRC gene Proteins 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2646356A CA2646356C (en) | 2006-04-17 | 2007-04-03 | High performance thread forming screw |
EP07759995.9A EP2007990B1 (en) | 2006-04-17 | 2007-04-03 | Method of forming a high performance thread forming screw |
ES07759995.9T ES2488414T3 (en) | 2006-04-17 | 2007-04-03 | Method of forming a high-performance self-tapping screw |
JP2009506673A JP2009533635A (en) | 2006-04-17 | 2007-04-03 | High performance screw forming screw |
MX2008013278A MX2008013278A (en) | 2006-04-17 | 2007-04-03 | High performance thread forming screw. |
PL07759995T PL2007990T3 (en) | 2006-04-17 | 2007-04-03 | Method of forming a high performance thread forming screw |
AU2007238300A AU2007238300B2 (en) | 2006-04-17 | 2007-04-03 | High performance thread forming screw |
BRPI0711260-2A BRPI0711260B1 (en) | 2006-04-17 | 2007-04-03 | METHOD FOR FORMING A THREAD FORMING SCREW |
KR1020087027844A KR101263539B1 (en) | 2006-04-17 | 2008-11-14 | High performance thread forming screw |
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 WO2007121081A2 (en) | 2006-04-17 | 2007-04-03 | High performance thread forming screw |
Country Status (11)
Country | Link |
---|---|
US (2) | US20070243043A1 (en) |
EP (1) | EP2007990B1 (en) |
JP (2) | JP2009533635A (en) |
KR (1) | KR101263539B1 (en) |
AU (1) | AU2007238300B2 (en) |
BR (1) | BRPI0711260B1 (en) |
CA (1) | CA2646356C (en) |
ES (1) | ES2488414T3 (en) |
MX (1) | MX2008013278A (en) |
PL (1) | PL2007990T3 (en) |
WO (1) | WO2007121081A2 (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US9004835B2 (en) * | 2010-02-19 | 2015-04-14 | Nucor Corporation | Weldless building structures |
US8529178B2 (en) * | 2010-02-19 | 2013-09-10 | Nucor Corporation | Weldless building structures |
DE102010063677A1 (en) * | 2010-12-21 | 2012-06-21 | Hilti Aktiengesellschaft | Method for producing a screw anchor and screw anchor |
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 (en) * | 2012-08-31 | 2017-12-13 | 日東精工株式会社 | Induction hardening tapping screw |
WO2015029266A1 (en) * | 2013-08-30 | 2015-03-05 | 日東精工株式会社 | Induction-hardened tapping screw |
US9731172B2 (en) | 2014-12-09 | 2017-08-15 | Dunlop Sports Co., Ltd | Sporting apparatus with monitoring device |
CA2964008C (en) | 2016-05-02 | 2023-10-24 | Nucor Corporation | Double threaded standoff fastener |
CN106736309A (en) * | 2017-02-23 | 2017-05-31 | 河北顶创金属制品有限公司 | A kind of screw processing technology |
US11028457B2 (en) * | 2017-07-17 | 2021-06-08 | Caterpillar Inc. | Method of heat treating a fastening member |
EP3536812A1 (en) * | 2018-03-08 | 2019-09-11 | HILTI Aktiengesellschaft | Bi-metal screw with martensitic hardenable steel |
DE102020102982A1 (en) * | 2020-02-05 | 2021-08-05 | Böllhoff Verbindungstechnik GmbH | Joining element, connection structure with the joining element, manufacturing method of the joining element and corresponding connection method |
CN113494510A (en) * | 2020-03-18 | 2021-10-12 | 工程组件公司 | Threaded fastener and method of making same |
CN112522492B (en) * | 2020-10-28 | 2022-11-01 | 浙江自紧王机械有限公司 | Heat treatment process for self-tightening nut and self-tightening gasket |
CN113404757A (en) * | 2021-06-29 | 2021-09-17 | 嘉兴市一鼎机电科技有限公司 | Bolt for nuclear power and production process thereof |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1054170A2 (en) | 1999-05-21 | 2000-11-22 | Hiroshi Onoe | High strength screw |
DE10113946A1 (en) | 2001-03-22 | 2002-09-26 | Toge Duebel A Gerhard Kg | Self-tapping, steel concrete bolt has cold-rolled self tapping thread near tip, normal thread continuing from this towards head and only section which carries self-tapping thread being hardened |
Family Cites Families (23)
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CH218873A (en) * | 1939-06-07 | 1942-01-15 | Barmag Barmer Maschf | Process for the production of cylindrical rayon rolls. |
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 |
US3972084A (en) * | 1973-04-23 | 1976-08-03 | Litton Fastening Systems | Fastener manufacturing method |
US3894570A (en) * | 1973-04-23 | 1975-07-15 | Dumont Aviat Associates | Self-tapping fastener |
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 (en) * | 1999-05-21 | 2001-09-14 | Koji Onoe | High strength screw and steel for high strength screw |
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US6338600B2 (en) * | 1999-11-15 | 2002-01-15 | Ejot Verbindungstechnik Gmbh & Co. Kg | Self-tapping, corrosion-resistant screw with hardened tip |
JP4313983B2 (en) * | 2002-04-18 | 2009-08-12 | Jfeスチール株式会社 | Steel for case hardening bearings with excellent toughness and rolling fatigue life in sub-high temperature range |
JP4188010B2 (en) * | 2002-07-04 | 2008-11-26 | 有限会社新城製作所 | Heat resistant drill screw |
DE10315957A1 (en) * | 2003-04-08 | 2004-10-28 | Ejot Gmbh & Co. Kg | Screw with a partially hardened functional tip and process for its manufacture |
JP5319866B2 (en) * | 2004-05-24 | 2013-10-16 | 株式会社小松製作所 | Rolling member and manufacturing method thereof |
JP2006016648A (en) * | 2004-06-30 | 2006-01-19 | Hino Motors Ltd | Bolt for forming tap |
US20070243043A1 (en) * | 2006-04-17 | 2007-10-18 | Acument Intellectual Properties, Llc | High performance thread forming screw |
-
2007
- 2007-04-02 US US11/695,341 patent/US20070243043A1/en not_active Abandoned
- 2007-04-03 CA CA2646356A patent/CA2646356C/en active Active
- 2007-04-03 MX MX2008013278A patent/MX2008013278A/en active IP Right Grant
- 2007-04-03 PL PL07759995T patent/PL2007990T3/en unknown
- 2007-04-03 BR BRPI0711260-2A patent/BRPI0711260B1/en active IP Right Grant
- 2007-04-03 AU AU2007238300A patent/AU2007238300B2/en active Active
- 2007-04-03 WO PCT/US2007/065828 patent/WO2007121081A2/en active Search and Examination
- 2007-04-03 ES ES07759995.9T patent/ES2488414T3/en active Active
- 2007-04-03 JP JP2009506673A patent/JP2009533635A/en active Pending
- 2007-04-03 EP EP07759995.9A patent/EP2007990B1/en active Active
-
2008
- 2008-11-14 KR KR1020087027844A patent/KR101263539B1/en active IP Right Grant
-
2009
- 2009-07-28 US US12/510,771 patent/US8172692B2/en active Active
-
2012
- 2012-05-21 JP JP2012115545A patent/JP5522548B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1054170A2 (en) | 1999-05-21 | 2000-11-22 | Hiroshi Onoe | High strength screw |
DE10113946A1 (en) | 2001-03-22 | 2002-09-26 | Toge Duebel A Gerhard Kg | Self-tapping, steel concrete bolt has cold-rolled self tapping thread near tip, normal thread continuing from this towards head and only section which carries self-tapping thread being hardened |
Non-Patent Citations (1)
Title |
---|
See also references of EP2007990A4 |
Also Published As
Publication number | Publication date |
---|---|
EP2007990A4 (en) | 2011-12-21 |
CA2646356A1 (en) | 2007-10-25 |
US20090286608A1 (en) | 2009-11-19 |
AU2007238300A1 (en) | 2007-10-25 |
WO2007121081A3 (en) | 2008-11-27 |
JP2012187638A (en) | 2012-10-04 |
ES2488414T3 (en) | 2014-08-27 |
CA2646356C (en) | 2013-10-08 |
BRPI0711260A8 (en) | 2018-02-06 |
BRPI0711260B1 (en) | 2019-09-17 |
KR101263539B1 (en) | 2013-05-13 |
JP5522548B2 (en) | 2014-06-18 |
KR20080110677A (en) | 2008-12-18 |
EP2007990A2 (en) | 2008-12-31 |
AU2007238300B2 (en) | 2012-04-19 |
EP2007990B1 (en) | 2014-07-02 |
US20070243043A1 (en) | 2007-10-18 |
US8172692B2 (en) | 2012-05-08 |
JP2009533635A (en) | 2009-09-17 |
BRPI0711260A2 (en) | 2011-08-30 |
MX2008013278A (en) | 2008-10-28 |
PL2007990T3 (en) | 2014-12-31 |
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