JP5852844B2 - 木質系材料用自穿孔ねじの製造方法 - Google Patents
木質系材料用自穿孔ねじの製造方法 Download PDFInfo
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- JP5852844B2 JP5852844B2 JP2011238317A JP2011238317A JP5852844B2 JP 5852844 B2 JP5852844 B2 JP 5852844B2 JP 2011238317 A JP2011238317 A JP 2011238317A JP 2011238317 A JP2011238317 A JP 2011238317A JP 5852844 B2 JP5852844 B2 JP 5852844B2
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- 239000000463 material Substances 0.000 title claims description 87
- 239000002023 wood Substances 0.000 title claims description 62
- 238000005553 drilling Methods 0.000 title claims description 37
- 238000004519 manufacturing process Methods 0.000 title claims description 19
- 238000000034 method Methods 0.000 title description 7
- 238000005096 rolling process Methods 0.000 claims description 9
- 239000007769 metal material Substances 0.000 claims description 7
- 230000000052 comparative effect Effects 0.000 description 19
- 238000010079 rubber tapping Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 239000011094 fiberboard Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000007586 pull-out test Methods 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000002648 laminated material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910000669 Chrome steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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
- 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
- F16B25/0015—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 a soft organic material, e.g. wood or plastic
-
- 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
- F16B25/0047—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 being characterised by its cross-section in the plane of the shaft axis
-
- 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
-
- 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
- F16B25/106—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a self-piercing screw-point, i.e. without removing material
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Wood Science & Technology (AREA)
- Connection Of Plates (AREA)
Description
金属材料からなり、自らねじ立てをしながら木質系材料にねじ込まれ、締め付けを行う木質系材料用自穿孔ねじをねじ転造により製造する木質系材料用自穿孔ねじの製造方法において、
ねじ軸線を含む縦断面における進み側フランクの谷底からねじ山の頂までの長さ(Ll)が、ねじ軸線を含む縦断面における追い側フランクの谷底からねじ山の頂までの長さ(Lf)より20%以上短くなるようにするとともに、
ねじ転造時に転造ダイスが追い側フランクより進み側フランクに強くかつ長く接触するようにすることにより、進み側フランクを追い側フランクより摩擦係数が小さな面とするものである。
(イ)ねじ込み時のトルクを安定的に小さくするとともに、引き抜き抵抗を安定的に大きくでき、かつ1本1本のねじ毎の、ねじ込みトルク性能および引き抜き抵抗性能のばらつきを少なくすることができる、
(ロ)製造方法が簡単で安価に製造できる、
(ハ)追い側フランクの摩擦が大きくなるようにすることにより、戻しトルクを増大させることができる、
等の優れた効果を得られるものである。
Ll=(ねじ外径−ねじ谷径)/2cosα
Lf=(ねじ外径−ねじ谷径)/2cosβ
となる。なお、この場合、(ねじ外径−ねじ谷径)=ねじ山高さである。
Ll/Lf=0.752(75.2%)
となっている。すなわち、ねじ軸線を含む縦断面における進み側フランク6の谷底からねじ山5の頂7までの長さLlが、ねじ軸線を含む縦断面における追い側フランク8の谷底からねじ山5の頂7までの長さLfより24.8%短くされている。これにより、進み側フランク6の面積は追い側フランク8の面積より前記長さの比Ll/Lfに対応して小さくされている。
Ll=(ねじ外径−ねじ谷径l)/2cosα
Lf=(ねじ外径−ねじ谷径f)/2cosβ
となる。
Ll/Lf=0.715(71.5%)
となる。すなわち、長さLlがLfより28.5%短くされている。
5 ねじ山
6 進み側フランク
7 ねじ山の頂
8 追い側フランク
9 突条
10 溝
α 進み側フランク角
β 追い側フランク角
Dl 進み側フランクの谷底端におけるねじ谷径
Df 追い側フランクの谷底端におけるねじ谷径
Ll ねじ軸線を含む縦断面における進み側フランクの谷底からねじ山の頂までの長さ
Lf ねじ軸線を含む縦断面における進み側フランクの谷底からねじ山の頂までの長さ
Claims (7)
- 金属材料からなり、自らねじ立てをしながら木質系材料にねじ込まれ、締め付けを行う木質系材料用自穿孔ねじをねじ転造により製造する木質系材料用自穿孔ねじの製造方法において、
ねじ軸線を含む縦断面における進み側フランクの谷底からねじ山の頂までの長さ(Ll)が、ねじ軸線を含む縦断面における追い側フランクの谷底からねじ山の頂までの長さ(Lf)より20%以上短くなるようにするとともに、
ねじ転造時に転造ダイスが追い側フランクより進み側フランクに強くかつ長く接触するようにすることにより、進み側フランクを追い側フランクより摩擦係数が小さな面とする木質系材料用自穿孔ねじの製造方法。 - ねじ軸線を含む縦断面における進み側フランクの谷底からねじ山の頂までの長さ(Ll)が、ねじ軸線を含む縦断面における追い側フランクの谷底からねじ山の頂までの長さ(Lf)より24%以上短くなるようにする請求項1記載の木質系材料用自穿孔ねじの製造方法。
- ねじ軸線を含む縦断面における進み側フランクの谷底からねじ山の頂までの長さ(Ll)が、ねじ軸線を含む縦断面における追い側フランクの谷底からねじ山の頂までの長さ(Lf)より28%以上短くなるようにする請求項1記載の木質系材料用自穿孔ねじの製造方法。
- 進み側フランク角が追い側フランク角より小さくなるようにする請求項1乃至3のいずれか1項に記載の木質系材料用自穿孔ねじの製造方法。
- 進み側フランクの谷底端におけるねじ谷径(Dl)が追い側フランクの谷底端におけるねじ谷径(Df)より太くなるようにする請求項1乃至4のいずれか1項に記載の木質系材料用自穿孔ねじの製造方法。
- ねじ山の全長または一部において、追い側フランクに放射状に突条または溝を設ける請求項1乃至5のいずれか1項に記載の木質系材料用自穿孔ねじの製造方法。
- 追い側フランク角を45度とする請求項1乃至6のいずれか1項に記載の木質系材料用自穿孔ねじの製造方法。
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JP2011238317A JP5852844B2 (ja) | 2011-10-31 | 2011-10-31 | 木質系材料用自穿孔ねじの製造方法 |
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JP5852844B2 true JP5852844B2 (ja) | 2016-02-03 |
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JP6173498B2 (ja) * | 2016-01-25 | 2017-08-02 | 有限会社藤▲崎▼鋲螺 | 非円形ねじ |
JP6626227B1 (ja) * | 2019-02-13 | 2019-12-25 | 株式会社トープラ | ねじ |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5035565A (ja) * | 1973-08-01 | 1975-04-04 | ||
JPS5289558U (ja) * | 1975-12-27 | 1977-07-04 | ||
JPS543570U (ja) * | 1977-06-10 | 1979-01-11 | ||
JPS5967608U (ja) * | 1982-10-18 | 1984-05-08 | 中山 弘 | 木ねじ |
JPS61127910A (ja) * | 1984-11-26 | 1986-06-16 | 株式会社 丸エム製作所 | アンカ−ボルト |
JPH062020Y2 (ja) * | 1987-11-19 | 1994-01-19 | 和枝 鈴木 | タッピンねじ |
AT389923B (de) * | 1988-01-29 | 1990-02-26 | Sfs Stadler Ag | Selbstbohrende und -gewindeschneidende schraube zum eindrehen in gasbeton |
US5120171A (en) * | 1990-11-27 | 1992-06-09 | Stuart Surgical | Bone screw with improved threads |
JPH0468212U (ja) * | 1990-10-23 | 1992-06-17 | ||
JPH0712615U (ja) * | 1993-08-06 | 1995-03-03 | 美隆 吉成 | 木ネジ |
DE19960287C1 (de) * | 1999-12-14 | 2001-07-26 | Ejot Verbindungstech Gmbh & Co | Selbstfurchende Schraube |
JP2001227524A (ja) * | 2000-02-14 | 2001-08-24 | Daiichi Kogyo Co Ltd | 緩み止めボルト |
JP3087879U (ja) * | 2001-12-11 | 2002-08-23 | 第一工業株式会社 | 緩み止めボルト |
JP2004176901A (ja) * | 2002-11-26 | 2004-06-24 | Aisan Ind Co Ltd | ボルト |
DE202005006493U1 (de) * | 2005-04-22 | 2005-06-23 | Berner Gmbh | Holz- und Kunststoffschraube |
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