JPS5942496Y2 - Tatsu pin screw - Google Patents
Tatsu pin screwInfo
- Publication number
- JPS5942496Y2 JPS5942496Y2 JP3106278U JP3106278U JPS5942496Y2 JP S5942496 Y2 JPS5942496 Y2 JP S5942496Y2 JP 3106278 U JP3106278 U JP 3106278U JP 3106278 U JP3106278 U JP 3106278U JP S5942496 Y2 JPS5942496 Y2 JP S5942496Y2
- Authority
- JP
- Japan
- Prior art keywords
- cutout
- semicircular
- screw
- tip
- cutout part
- 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
Links
- 238000010079 rubber tapping Methods 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000005553 drilling Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material 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
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Drilling Tools (AREA)
Description
【考案の詳細な説明】
本考案はタッピンねじの改良に関するものであって、そ
の特徴とするところは、タッピンねじの下端ねじ助成下
を正面半円形に切除し、それに続き下方細幅のゆるい彎
曲切除部を設け、更にその下を下方細幅の直線切除部と
して尖端部がシャンクの軸線上に位置する如くなし、且
つ側面からみた時、該尖端部から直線傾斜切除部までを
略同じ薄幅とし、該部分から半円形切除部に至る間はそ
れぞれ外方へ彎曲に形成され、尖端部から該半円形切除
部間を外郭線より中くぼみの球面状のすくい角とした二
枚刃錐状の切削刃を形成してなる薄鉄板用のタッピンね
じであり、以下本考案の実施例を示す図面について説明
する。[Detailed description of the invention] The present invention relates to an improvement of a self-tapping screw, and its characteristics are that the lower end of the self-tapping screw is cut out in a semicircular shape in the front, followed by a narrow downward gentle curvature. A cutout is provided, and a straight cutout with a narrow downward width is provided below the cutout so that the tip is located on the axis of the shank, and when viewed from the side, the width from the tip to the straight inclined cutout is approximately the same thin width. A double-edged conical shape with a spherical rake angle that is concave in the middle from the outline line between the tip and the semicircular cutout. This is a self-tapping screw for a thin iron plate formed with a cutting edge, and the drawings showing the embodiments of the present invention will be described below.
第１図は本考案の正面図、第２図は側面図を示したもの
であって、図中１はねじ回し工具受入部２を具えた頭部
、３はシャンク、４は該シャンク３に形成されているね
じ山を示し、該ねじ山３直下には第１図に見る如く、正
面半円形切除部５に続き下方細幅のゆるい彎曲切除部６
とし、更にその下ににげ面Ｉ′を有する下方細幅の直線
傾斜切除部７として尖端部８がシャンク３の軸線上に位
置する如く正背面を対称的に切除し、且つ該尖端部８か
も直線傾斜切除部７部分は第２図に示されている如く、
側面において先端かや＼細幅か、はぼ同じ薄幅で、該部
分１かも半円形切除部５に至る間はそれぞれ側面外方へ
彎曲９に形成され且つ前記尖端部８かも半円形切除部に
至る間は外郭線より中くぼみの球面状のすくい角１０と
した二枚刃錐状の切削刃を形成し、第４図のイ２ロ、へ
に示す如く薄鉄板１１に穿孔しながら押し出し部１２を
形成し、タッピンねじを切れる如くなしたものである。Fig. 1 shows a front view of the present invention, and Fig. 2 shows a side view. As shown in FIG. 1, just below the thread 3, there is a semicircular cutout 5 on the front side followed by a gently curved cutout 6 with a narrow downward width.
Further, the right back surface is cut out symmetrically so that the pointed end 8 is located on the axis of the shank 3 as a downwardly narrow linearly inclined cut section 7 having a barbed surface I' below, and the pointed end 8 is As shown in FIG.
On the side surface, the tip and the narrow width are approximately the same thin width, and the portion 1 is curved outward from the side surface 9 while reaching the semicircular cutout 5, and the pointed end 8 is also the semicircular cutout. A two-edged cone-shaped cutting blade with a rake angle of 10 is formed with a spherical surface concave in the middle from the outline, and is extruded while drilling into the thin iron plate 11 as shown in Fig. 4, A2B and B. A portion 12 is formed so that a tapping screw can be cut.
従って本考案は薄鉄板１１にねじ孔をあげる際、ねじ孔
をあける位置をポンチングしなくとも尖端部８によって
、ねじ孔穿設位置を所定位置に正確に設定し得る。Therefore, in the present invention, when drilling a screw hole in the thin iron plate 11, the position of the screw hole can be accurately set at a predetermined position using the pointed end 8 without punching the position of the screw hole.
また穿孔に際しては、この二枚刃錐状の先方の直線傾斜
切除部Ｔにおいて薄鉄板１１に穿孔が行われる。Further, when drilling, the thin iron plate 11 is drilled at the straight inclined cutting portion T at the front of the two-blade conical shape.
そして、この穿孔時に出る切削屑のはげ部分を、本考案
では第２図に明瞭に示す如く中くぼみの球面状すくい角
１０に形成しであるので、切削屑はすくいあげるように
鉄板外の上方へ効率よく排出され（第４図のイ参照）そ
して、ゆるい下方細幅彎曲切除部６部分によって押し出
し部１２が形成され、（第４図の口参照）そしてねじ山
４部でねじがきられ、該ねじの締付けがなされる。In the present invention, the bald part of the cutting waste generated during drilling is formed into a hollow spherical rake angle 10 as clearly shown in FIG. The extruded portion 12 is formed by the loose downward narrow curved cut portion 6 (see the opening in FIG. 4), and the thread is cut with the thread 4 portion. The screw is tightened.
従って本考案は、タッピンねじによる薄鉄板に対する穿
孔位置の位置決めをタッピンねじ自体によって行い得る
と同時にタッピンねじの下孔穿設効率がよいので、タッ
ピンねじによるねじ形成、並びに該ねじの締付作業能率
の向上に多大の効果を奏する。Therefore, the present invention enables the positioning of the hole to be drilled into a thin steel plate by the tapping screw itself, and at the same time, the efficiency of drilling the pilot hole of the tapping screw is high. It has a great effect on improving.
図面は本考案の実施例を示したものであって、第１図は
正面図、第２図は同側面図、第３図は底面図、第４図の
イ２２ロ、ハ本考案タッピンねじによるねじ成形工程を
説明するために示した要部正面図である。
４・・・・・・ねじ山、５・・・・・・正面半円形切除
部、６・・・・・・彎曲切除部、Ｉ・・・・・・直線傾
斜切除部、７′・・・・・・にげ面、８・・・・・・尖
端部、９・・・・・・彎曲、１０・・・・・・球面状す
くい角。The drawings show an embodiment of the present invention, in which Fig. 1 is a front view, Fig. 2 is a side view, Fig. 3 is a bottom view, and Fig. 4 shows the tapping screw of the present invention. FIG. 3 is a front view of main parts shown to explain a thread forming process according to the present invention. 4...Screw thread, 5...Front semicircular cutout, 6...Curved cutout, I...Straight inclined cutout, 7'... ... Convex surface, 8 ... Point, 9 ... Curved, 10 ... Spherical rake angle.
Claims (1)
５に続く下方細幅のゆるい彎曲切除部６と更にその下を
にげ面７′を有する下方細幅の直線切除部１として尖端
部８をシャンクの軸線上に位置する如く正背面同形状に
切除し、且つ尖端部８から直線傾斜切除部７部分は側面
略同じ薄幅とし、該部分から半円形切除部５に至る間は
それぞれ外方へ彎曲９に形成され、そして尖端部８かも
半円形切除部５に至る間を外郭線より中くぼみの球面状
すくい角１０とした二枚刃錐状の切削刃を形成してなる
タッピンねじ。Immediately below the thread 4 at the lower end of the self-tapping screw, a downwardly narrow gently curved cutout part 6 continues to the front semicircular cutout part 5, and further below that, a lower narrow straight cutout part 1 having a barbed surface 7' is formed as a pointed end. 8 is cut into the same shape on the front and back sides so as to be located on the axis of the shank, and the portion from the tip 8 to the straight inclined cut portion 7 has approximately the same width on the sides, and from this portion to the semicircular cut portion 5, each A tapping pin formed with a two-edged cone-shaped cutting blade that is curved outwardly 9 and has a spherical rake angle 10 that is concave from the outline between the tip 8 and the semicircular cutout 5. screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3106278U JPS5942496Y2 (en) | 1978-03-10 | 1978-03-10 | Tatsu pin screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3106278U JPS5942496Y2 (en) | 1978-03-10 | 1978-03-10 | Tatsu pin screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54134865U JPS54134865U (en) | 1979-09-19 |
| JPS5942496Y2 true JPS5942496Y2 (en) | 1984-12-12 |
Family
ID=28881908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3106278U Expired JPS5942496Y2 (en) | 1978-03-10 | 1978-03-10 | Tatsu pin screw |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5942496Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010039659A1 (en) * | 2010-08-24 | 2012-03-01 | Adolf Würth GmbH & Co. KG | fastener |
-
1978
- 1978-03-10 JP JP3106278U patent/JPS5942496Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54134865U (en) | 1979-09-19 |
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