JPH0242205A - Press-formed type drill screw - Google Patents
Press-formed type drill screwInfo
- Publication number
- JPH0242205A JPH0242205A JP19192688A JP19192688A JPH0242205A JP H0242205 A JPH0242205 A JP H0242205A JP 19192688 A JP19192688 A JP 19192688A JP 19192688 A JP19192688 A JP 19192688A JP H0242205 A JPH0242205 A JP H0242205A
- Authority
- JP
- Japan
- Prior art keywords
- drill
- tip
- cutting edge
- cutting
- shank
- 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.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 13
- 238000005553 drilling Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 9
- 238000005242 forging Methods 0.000 description 3
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000011120 plywood Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 125000002560 nitrile group Chemical group 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010079 rubber tapping Methods 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
- F16B25/0036—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)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はタッピングねじの先端にねじ下孔切削用のドリ
ル部を延設した圧造成形ドリルねじに関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a heading drill screw in which a drill portion for cutting a pilot hole extends from the tip of a tapping screw.
（従来の技術）
ドリルねじには様々な形状のものが開示されているが、
その中でドリル部を圧造により成形した圧造成形ドリル
ねじは、例えば特公昭５９−７０４６号公報のものがあ
る。この技術によると、第９図に示すようにドリル部５
１の直径方向に相対向して軸方向へ延びる二条の縦溝５
２により形成される切削面５３が軸芯に対して互いに反
対側にＢ伺し、かつ前記軸芯と平行に延びる平面を基準
面５４としてその基準面５４より凹曲して形成されると
ともに、その切削面５３の前端縁および側端縁に形成さ
れる切れ刃５５．５６が前記基準面５４上に設けられて
おり、凹曲（）た前記切削面５３により両切れ刃５５．
５６にすくい角α１ （前端縁側）、α２ （側端縁側
）が形成されたものである。(Prior art) Various shapes of drill screws have been disclosed, but
Among these, a forged drill screw whose drill portion is formed by forging is disclosed, for example, in Japanese Patent Publication No. 59-7046. According to this technique, as shown in FIG.
1, two vertical grooves 5 extending in the axial direction and facing each other in the diametrical direction.
The cutting surfaces 53 formed by the cutting surfaces 2 are oriented B on opposite sides with respect to the axis, and are formed with a plane extending parallel to the axis as a reference plane 54, and are concavely curved from the reference plane 54, Cutting edges 55 and 56 formed at the front edge and side edges of the cutting surface 53 are provided on the reference surface 54, and both cutting edges 55.
Rake angles α1 (on the front edge side) and α2 (on the side edge side) are formed at 56.
（発明が解決しようとする課題）
この従来のドリルねじは、ドリル先端のすくい角か小さ
く、被ねじ込み材への穿孔の際に最初の食い込みが遅い
。さらに、すくい角が小さく、縦溝であるために切粉の
流れが悪く、ねじ込み時間が長くなるとともに切粉の噛
み込みによりねじの締付は不良が発生する。また、ねば
りのおる材料に使用したとき、ドリル先端部に構成刃先
が発生し穿孔時間が極めて長くなる。特にアルミ板と軟
鋼板との合板材などには穿孔不能になることが多々発生
し重要な課題になっている。(Problems to be Solved by the Invention) This conventional drill screw has a small rake angle at the tip of the drill, and the initial biting is slow when drilling into a material to be screwed. Furthermore, since the rake angle is small and the screw is a vertical groove, the flow of chips is poor, which increases screwing time and causes defects in screw tightening due to biting of chips. Furthermore, when used on sticky materials, a built-up cutting edge occurs at the tip of the drill, making drilling time extremely long. In particular, drilling is often impossible in plywood materials such as aluminum plates and mild steel plates, which is an important issue.
この課題を解決するためには、ドリル部先端のすくい角
を２０°以上に大きくし、しかもすくい角を形成する斜
面を広くすることが必要であるが、すくい角を大きくし
、すくい角を形成する斜面を広くするとチゼルエツジが
長くなり初期食い込みが遅く、穿孔性が極めて悪くなる
とともに、刃先の剛性が低下するなど関連した課題が発
生し、実際に圧造技術では成形不可能とされていた。本
発明はこの課題を圧造成形ドリルねじにおいて解消する
ことを目的として発明されたものでおる。In order to solve this problem, it is necessary to increase the rake angle at the tip of the drill part to 20° or more and widen the slope forming the rake angle. When the slope of the cutting edge was made wider, the chisel edge became longer, the initial penetration was slower, the perforation became extremely poor, and the rigidity of the cutting edge decreased, which caused related problems, and in fact it was considered impossible to form using forging technology. The present invention was invented with the aim of solving this problem in a heading drill screw.
（課題を解決するための手段）
この目的を達成するために本発明は、外周にねじ山を形
成したシャンク１と、このシャンク１の上端に一体形成
され・１こ工具係合部を有する頭部２と、前記シＶンク
１の下方に延設したドリル部３とからなり、ドリル部３
の下端は、軸芯に対称な二つの傾斜面により軸芯で交叉
する逃げ面５．６を形成した先端部４を有し、この先端
部４からシＶンク１まで軸芯に相対向して下端より互い
に反対方向の斜め上方へ、しかもやや外向きに二条の傾
斜溝７．８を刻設し、この二条の傾斜溝７．８と前記二
つの逃げ面５．６とによりそれぞれ形成される先端部４
の稜線を先端切れ刃９．１０とするとともに、二条の傾
斜溝７．８とドリル部３の外周面とによりそれぞれ形成
される稜線を外周切れ刃１１．１２とするドリルねじに
おいて、前記二条の傾斜溝７．８によりそれぞれ形成さ
れる所定の角度θ傾斜した切削面１３．１４に、先端切
れ刃９．１０に平行して所定の幅だけ先端すくい角αを
設け、これに連続した外周切れ刃１１．１２に平行して
所定の幅だけ外周すくい角βを形成したものである。(Means for Solving the Problems) In order to achieve this object, the present invention includes a shank 1 having a thread formed on its outer periphery, and a head having a tool engaging portion integrally formed at the upper end of the shank 1. part 2, and a drill part 3 extending below the sink 1.
The lower end has a tip 4 which forms a flank 5.6 that intersects at the axis with two inclined surfaces symmetrical to the axis, and the tip 4 extends from the sink 1 to face the axis. Two inclined grooves 7.8 are cut diagonally upward from the lower end in mutually opposite directions and slightly outward, and are formed by these two inclined grooves 7.8 and the two flank surfaces 5.6, respectively. tip 4
In the drill screw, the ridgeline of the two grooves 7.8 is the tip cutting edge 9.10, and the ridgeline formed by the two inclined grooves 7.8 and the outer circumferential surface of the drill part 3 is the outer cutting edge 11.12. Cutting surfaces 13.14 each formed by the inclined grooves 7.8 and inclined at a predetermined angle θ are provided with a tip rake angle α of a predetermined width parallel to the tip cutting edge 9.10, and a continuous peripheral cutting edge is provided. An outer rake angle β is formed by a predetermined width parallel to the blades 11 and 12.
（作用）
ドリル部３において、角度θ傾斜させた切削面１３．１
４に先端切れ刃９．１０と平行に所定の幅だけ先端すく
い角αを設けたこと、すなわち、傾斜角θの上にざらに
先端すくい角αを連続して設けたことにより、先端切れ
刃９．１０の剛性を保らながら被ねじ込み材への初期食
い込みも速くなり穿孔速度が改善される。ねばりのめる
材料にねじ込む際にも構成刃先が発生することなく、し
かも切粉の流れや切粉の排除が良好になる。また、前記
切削面１３．１４の傾斜角θを設けた上に外周すくい角
βを設けたことにより、穿孔時の推進力を増進させると
ともに、外径方向の切削性が改善され穿孔寸法が安定す
る。(Function) In the drill part 3, the cutting surface 13.1 is inclined at an angle θ.
By providing the tip rake angle α by a predetermined width in parallel with the tip cutting edge 9. While maintaining the rigidity of 9.10, the initial biting into the material to be screwed becomes faster and the drilling speed is improved. Even when screwing into sticky materials, built-up edges do not occur, and the flow and removal of chips are improved. In addition, by providing the inclination angle θ of the cutting surfaces 13 and 14 and the outer peripheral rake angle β, the driving force during drilling is increased, and the machinability in the outer radial direction is improved and the drilling dimension is stabilized. do.
（実施例）
以下、第１図ないし第６図に基づき本発明の詳細な説明
する。図において、１は外周にタッピング状ねじ山を形
成したシャンクである。このシャンク１の上端にはドリ
ルねじを駆動するための工具係合部を有する頭部２か一
体形成されている。(Example) Hereinafter, the present invention will be explained in detail based on FIGS. 1 to 6. In the figure, 1 is a shank with a tapping-like thread formed on its outer periphery. A head 2 having a tool engaging portion for driving a drill screw is integrally formed at the upper end of the shank 1.
一方、前記シャンク１の下方にはこれと同心にドリル部
３が延設されている。このドリル部３の下端は、軸芯に
対称な二つの傾斜面（角度は一般に９０’ないし１１０
’ ）により軸芯で互いに交叉する逃げ面５．６によっ
て先端部４が形成されており、この先端部４の逃げ面５
．６からシャンク１まで軸芯に相対向して、下端より互
いに斜め上方（角度θは１０°ないし１２°）の反対方
向へ、しかもやや外向きに二条の傾斜溝７．８が刻設さ
れている。On the other hand, a drill portion 3 extends concentrically below the shank 1. The lower end of this drill part 3 has two inclined surfaces (the angle is generally 90' to 110') symmetrical to the axis.
), the tip 4 is formed by the flanks 5 and 6 that intersect with each other at the axis, and the flank 5 of the tip 4 is
．． 6 to the shank 1, two inclined grooves 7.8 are carved diagonally upward from the lower end (angle θ is 10° to 12°) in opposite directions and slightly outward. There is.
この傾斜溝７．８と前記逃げ而５．６とにより形成され
た、軸芯を含む平面と平行に位置した稜線をそれぞれ先
端切れ刃９．１０とし、面記逃げ而５．６が交叉した下
端の稜線がヂゼルエツジ１５を形成している。また二条
の傾斜溝７．８とドリル部３の外周面とによりそれぞれ
形成される稜線が外周切れ刃１１．１２どなっている。The ridge lines formed by this inclined groove 7.8 and the relief 5.6, which are located parallel to the plane containing the axis, are respectively defined as tip cutting edges 9.10, and the surface relief 5.6 intersects. The ridgeline at the lower end forms a diesel edge 15. Further, the ridge lines formed by the two inclined grooves 7.8 and the outer circumferential surface of the drill portion 3 form the outer circumferential cutting edge 11.12.
この両外周切れ刃１１．１２の成す直径は、前記シャン
ク１に形成されたねじ山の外径よりも小さく谷径より大
きくしてねじ込みに最適な穿孔寸法に設定されている。The diameter of both outer circumferential cutting edges 11, 12 is smaller than the outer diameter of the thread formed on the shank 1 and larger than the root diameter, and is set to the optimum drilling size for screwing.
そして、前記二条の傾斜溝７．８によりそれぞれ形成さ
れるθ角傾斜した切削面１３．１４において、先端切れ
刃９．１０とそれぞれ平行に所定の幅だけ（例えば、４
ｍｍサイズのドリルねじでは０．４〜０．５ｍｍ幅）先
端すくい角α（αは１０°ないし１２°）か付けられて
おり、これに連続した外周切れ刃１１．１２に平行して
所定の幅だけ（例えば、４ｍｍサイズのドリルねじでは
０．５〜０．６ｍｍ幅）それぞれ外周すくい角β（βは
１５°ないし１８°）が付けられている。Then, a predetermined width (for example,
For mm size drill screws, a tip rake angle α (α is 10° to 12°) (width 0.4 to 0.5 mm) is attached, and a predetermined rake angle is attached parallel to the continuous peripheral cutting edge 11.12. The outer circumferential rake angle β (β is 15° to 18°) is attached to each of the widths (for example, 0.5 to 0.6 mm width for a 4 mm size drill screw).
このような構成の圧造成形ドリルねじは、ドリル部３に
おいて、角度θ傾斜させた切削面１３．１４に先端切れ
刃９．１０と平行に所定の幅だけ先端すくい角αを設け
たこと、すなわち、傾斜角θの上にざらに先端すくい角
αを連続して設けたことにより、先端切れ刃９．１０の
剛性を保らながら被ねじ込み材への初期食い込みも速く
なり穿孔速度が改善される。ねばりのある材料にねじ込
む際にも構成刃先が発生することなく、しかも切粉の流
れや、切粉の排除が良好になる。また、前記切削面１３
．１４の傾斜角θを設けた上に外周すくい角βを設けた
ことにより、穿孔時の推進力を増進させるとともに、外
径方向の切削性が改善され穿孔寸法が安定し、速く確実
に締付けができる圧造成形ドリルねじとなる。The forging drill screw having such a configuration has a tip rake angle α of a predetermined width parallel to the tip cutting edge 9.10 on the cutting surface 13.14 inclined at an angle θ in the drill portion 3, that is, By providing the tip rake angle α continuously and roughly above the inclination angle θ, the initial biting into the material to be screwed becomes faster and the drilling speed is improved while maintaining the rigidity of the tip cutting edge 9.10. . Even when screwing into sticky materials, built-up edges do not occur, and the flow and removal of chips are improved. Further, the cutting surface 13
．． By providing an inclination angle θ of 14 and an outer rake angle β, the propulsive force during drilling is increased, machinability in the outer diameter direction is improved, the drilling dimension is stabilized, and tightening is fast and reliable. It becomes a heading molded drill screw.
また、他の実施例として第７図および第８図に示すよう
に、ドリル部３先端のチゼルエツジ１５近傍に相対向し
てシンニング２０．２１を設けたドリルねじにおいて、
前記同様に先端切れ刃９．１０に先端すくい角αを付け
、外周切れ刃１１．１２にも外周すくい角βを付けるこ
とより、前記同様の作用効果を発揮するとともに穿孔初
期に先端ぶれをしない圧造成形ドリルねじとなる。As another example, as shown in FIGS. 7 and 8, in a drill screw in which thinnings 20 and 21 are provided oppositely in the vicinity of the chisel edge 15 at the tip of the drill portion 3,
By attaching a tip rake angle α to the tip cutting edge 9.10 and attaching an outer circumferential rake angle β to the outer cutting edge 11.12 in the same manner as described above, the same effect as described above is achieved and the tip does not run out at the initial stage of drilling. Becomes a heading drill screw.
（発明の効果）
以上説明した実施例から明らかなように、本発明のドリ
ル部は、傾斜角を設けた切削面の上にさらに先端すくい
角を付けた形状とし、ドリル部の外周切削刃にもすくい
角を５９けた構成の圧造成形ドリルねじてあり、被ねじ
込み材への食込みが確実でしかも速くなり、ドリリング
タイムが従来のドリルねじに比較して３０％速くするこ
とができた。また、従来のドリルねじて課題となってい
たアルミ板と軟鋼板の合板材にも確実にねじ込むことが
でき、しかもドリル部は薄板から厚板（３，２ｍｍ以上
）まで共通して使用できる性能を有するものとなった。(Effects of the Invention) As is clear from the embodiments described above, the drill part of the present invention has a shape in which a tip rake angle is further added on the cutting surface provided with an inclination angle, and the outer cutting edge of the drill part The head-formed drill screw has a rake angle of 59 digits, which ensures reliable and fast penetration into the material to be screwed, resulting in a 30% faster drilling time compared to conventional drill screws. In addition, it can be reliably screwed into plywood materials such as aluminum plates and mild steel plates, which was an issue with conventional drill screws, and the drill part can be used in common from thin plates to thick plates (3.2 mm or more). It now has the following.
ざらに、この形状にしたことにより圧造成形金型の耐久
性が約４０％向上した。また、ねじ転造工程における圧
造成形のパリの離脱が極めて容易になり、ドリルねじの
品質が安定し、生産性が著しく向上するなど多くの効果
が得られる。Roughly speaking, this shape improved the durability of the heading mold by about 40%. In addition, it becomes extremely easy to remove the head formed during the thread rolling process, the quality of the drilled screw is stabilized, and productivity is significantly improved, and many other effects can be obtained.
第１図は第６図に示す本発明のドリルねじのドリル部拡
大正面図、第２図は第１図のドリル部側面図、第３図は
第１図の先端平面図、第４図は第１図のＡ−Ａ線断面図
の先端部を示す図面、第５図は第１図のＢ−Ｂ線断面図
、第６図は本発明の実施例を示すドリルねじの正面図、
第７図は他の実施例を示すドリル部拡大正面図、第８図
は第７図の先端平面図、第９図は従来のドリルねじのド
リル部側面図である。
１：シャンク
３ニトリル部
５．６：逃げ面
９．１０：先端切れ刃
１３．１４：切削面
α：先喘すくい角
θ：切削面の傾斜角
２０．２１：シンニング
頭部
先端部
８：傾斜溝
１２：外周切れ刃
ヂゼルエツジ
外周すくい角Figure 1 is an enlarged front view of the drill part of the drill screw of the present invention shown in Figure 6, Figure 2 is a side view of the drill part of Figure 1, Figure 3 is a top plan view of the tip of Figure 1, and Figure 4 is FIG. 5 is a sectional view taken along line BB in FIG. 1, and FIG. 6 is a front view of a drill screw showing an embodiment of the present invention.
FIG. 7 is an enlarged front view of the drill part showing another embodiment, FIG. 8 is a top plan view of the tip of FIG. 7, and FIG. 9 is a side view of the drill part of a conventional drill screw. 1: Shank 3 Nitrile part 5.6: Flank surface 9.10: Tip cutting edge 13.14: Cutting surface α: Tip rake angle θ: Inclination angle of cutting surface 20.21: Thinning head tip 8: Inclined Groove 12: Peripheral cutting edge Diesel edge peripheral rake angle
Claims (1)
ク（１）の上端に一体形成された工具係合部を有する頭
部（２）と、前記シャンク（１）の下方に延設したドリ
ル部（３）とからなり、ドリル部（３）の下端は、軸芯
に対称な二つの傾斜面により軸芯で交叉する逃げ面（５
、６）を形成した先端部（４）を有し、この先端部（４
）からシャンク（１）まで軸芯に相対向して下端より互
いに反対方向の斜め上方へしかもやや外向きに二条の傾
斜溝（７、８）を刻設し、この二条の傾斜溝（７、８）
と前記二つの逃げ面（５、６）とによりそれぞれ形成さ
れる先端部（４）の稜線を先端切れ刃（９、１０）とす
るとともに、二条の傾斜溝（７、８）とドリル部（３）
の外周面とによりそれぞれ形成される稜線を外周切れ刃
（１１、１２）とするドリルねじにおいて、前記二条の
傾斜溝（７、８）によりそれぞれ形成される所定の角度
（θ）傾斜した切削面（１３、１４）に先端切れ刃（９
、１０）に平行して所定の幅だけ先端すくい角（α）を
設け、これに連続した外周切れ刃（１１、１２）に所定
の幅だけ外周すくい角（β）を形成したことを特徴とす
る圧造成形ドリルねじ。A shank (1) having a thread formed on its outer periphery, a head (2) having a tool engaging portion integrally formed at the upper end of the shank (1), and a drill extending below the shank (1). The lower end of the drill part (3) has a flank (5) that intersects at the axis with two inclined surfaces symmetrical to the axis.
, 6).
) to the shank (1), two inclined grooves (7, 8) are carved diagonally upward from the lower end in opposite directions and slightly outward from the lower end, facing the axis, and these two inclined grooves (7, 8) 8)
The ridgeline of the tip (4) formed by the two flanks (5, 6) is the tip cutting edge (9, 10), and the two inclined grooves (7, 8) and the drill part ( 3)
In a drill screw whose outer peripheral cutting edge (11, 12) is a ridge line formed by the outer peripheral surface of (13, 14) have the tip cutting edge (9
, 10) is provided with a tip rake angle (α) of a predetermined width, and a peripheral rake angle (β) of a predetermined width is formed on the peripheral cutting edge (11, 12) continuous with this. Heading molded drill screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63191926A JPH0668283B2 (en) | 1988-07-29 | 1988-07-29 | Forging drill screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63191926A JPH0668283B2 (en) | 1988-07-29 | 1988-07-29 | Forging drill screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0242205A true JPH0242205A (en) | 1990-02-13 |
| JPH0668283B2 JPH0668283B2 (en) | 1994-08-31 |
Family
ID=16282742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63191926A Expired - Lifetime JPH0668283B2 (en) | 1988-07-29 | 1988-07-29 | Forging drill screw |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0668283B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7140825B2 (en) * | 2002-01-31 | 2006-11-28 | Honda Giken Kogyo Kabushiki Kaisha | Self tapping bolt |
| JP2015200346A (en) * | 2014-04-07 | 2015-11-12 | 北村精工株式会社 | drill screw |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61282614A (en) * | 1985-02-12 | 1986-12-12 | ニスコ株式会社 | Drill screw |
-
1988
- 1988-07-29 JP JP63191926A patent/JPH0668283B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61282614A (en) * | 1985-02-12 | 1986-12-12 | ニスコ株式会社 | Drill screw |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7140825B2 (en) * | 2002-01-31 | 2006-11-28 | Honda Giken Kogyo Kabushiki Kaisha | Self tapping bolt |
| JP2015200346A (en) * | 2014-04-07 | 2015-11-12 | 北村精工株式会社 | drill screw |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0668283B2 (en) | 1994-08-31 |
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| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |