JPH062706A - Drill screw for very thick plate - Google Patents
Drill screw for very thick plateInfo
- Publication number
- JPH062706A JPH062706A JP15787392A JP15787392A JPH062706A JP H062706 A JPH062706 A JP H062706A JP 15787392 A JP15787392 A JP 15787392A JP 15787392 A JP15787392 A JP 15787392A JP H062706 A JPH062706 A JP H062706A
- Authority
- JP
- Japan
- Prior art keywords
- drill
- screw
- thick plate
- extra
- shaft
- 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.)
- Pending
Links
Landscapes
- Drilling Tools (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、ドリル部で極厚板に
穴をあけながら、ねじ部をねじ込んでいく極厚板用ドリ
ルねじに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drill screw for an extra-thick plate in which a screw portion is screwed in while making a hole in the extra-thick plate with a drill portion.
【０００２】[0002]
【従来の技術】従来、極厚板用ドリルねじは、極厚板の
厚さよりも例えば１０％程度長いリードを有するドリル
部を設けて、極厚板であっても、ドリル部で穿孔しなが
ら切削屑を外部に排出できるようにして、極厚板にねじ
部をねじ込むことができるようにしている。2. Description of the Related Art Conventionally, a drill screw for an extra-thick plate is provided with a drill portion having a lead longer than the thickness of the extra-thick plate by, for example, about 10%. The cutting waste can be discharged to the outside, and the screw part can be screwed into the extremely thick plate.
【０００３】[0003]
【発明が解決しようとする課題】ところが、このような
極厚板用ドリルねじにおいては、ドリル部の長さが長い
ため、極厚板にねじ込んだ際に、極厚板の裏側に大きく
ドリル部が突出し、その裏側に突出したドリル部が人体
を損傷する危険があった。However, in such a drill screw for an extra thick plate, since the length of the drill portion is long, when it is screwed into the extra thick plate, a large drill portion is provided on the back side of the extra thick plate. There is a risk that the drill part projected and the drill part projected on the back side would damage the human body.
【０００４】また、この極厚板用のドリルねじはリード
の長いドリル部を必要とするため、このリードの長いド
リル部を作るための金型が高価になり、また金型を作動
させるための鍛造機械も大型かつ高価になり、ひいて
は、極厚板用ドリルねじのコストが高いものになるとい
う問題があった。Further, since the drill screw for the extra-thick plate requires a drill portion having a long lead, a die for making the drill portion having a long lead becomes expensive and a die for operating the die is required. There is a problem that the forging machine also becomes large and expensive, and eventually the cost of the drill screw for extra thick plate becomes high.
【０００５】そこで、この発明の目的は、裏側に突出し
たドリル部を取り除くことができ、安全で、かつ、ドリ
ル部のリード長さを短くすることができて、安価に製造
することができる極厚板用ドリルねじを提供することに
ある。Therefore, an object of the present invention is to remove the drill portion projecting to the back side, to be safe, to shorten the lead length of the drill portion, and to manufacture at low cost. To provide a drill screw for a thick plate.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、この発明の極厚板用ドリルねじは、頭部とねじ部と
ドリル部とを有する極厚板用ドリルねじにおいて、In order to achieve the above object, an extra-thick plate drill screw of the present invention is an extra-thick plate drill screw having a head portion, a screw portion and a drill portion.
【０００７】上記ドリル部とねじ部との間に、上記ドリ
ル部の外接円よりも細い軸部を設け、上記軸部の上記ね
じ部側の箇所に破断用の溝を設けて、上記溝の箇所を破
断して、上記軸部とドリル部をねじ部から分離できるよ
うにしたことを特徴としている。A shaft portion, which is thinner than the circumscribed circle of the drill portion, is provided between the drill portion and the screw portion, and a groove for breaking is provided at a portion of the shaft portion on the screw portion side. It is characterized in that the shaft portion and the drill portion can be separated from the screw portion by breaking the portion.
【０００８】[0008]
【作用】上記極厚板用のドリルねじは、ドリル部によっ
て極厚板を穿孔し、穿孔により生じた切削屑はドリル部
の外接円よりも細い軸部のまわりを通って外部に排出さ
れる。したがって、ドリル部のリードの長さを短かくし
ても、切削屑を軸部の回りを通して外部に排出できるこ
とになる。このように、ドリル部のリードの長さを短か
くすることができるので、この極厚板用ドリルねじの製
造コストを低減することができる。そして、このドリル
部によって穿孔された穴に軸部に連なるねじ部がねじ込
まれていき、極厚板と被締付物を締め付けることができ
る。そして、極厚板の裏側に突出した軸部およびドリル
部は外部からハンマーなどによって、側方から衝撃を与
えると、軸部の溝の箇所が破断され、軸部とドリル部は
ねじ部から除去される。In the above-mentioned drill screw for the extra thick plate, the extra thick plate is punched by the drill portion, and the cutting waste generated by the punching is discharged to the outside through the shaft portion thinner than the circumscribed circle of the drill portion. . Therefore, even if the length of the lead of the drill portion is shortened, the cutting waste can be discharged to the outside through the shaft portion. In this way, the length of the lead of the drill portion can be shortened, so that the manufacturing cost of this extra thick plate drill screw can be reduced. Then, the screw portion connected to the shaft portion is screwed into the hole drilled by the drill portion, and the extremely thick plate and the object to be fastened can be fastened. When the shaft and drill protruding from the back side of the extra-thick plate are impacted from the outside by a hammer etc. from the outside, the groove of the shaft is broken and the shaft and drill are removed from the screw. To be done.
【０００９】このように、この極厚板用ドリルねじにお
いては、極厚板の裏側に突出する軸部およびドリル部が
除去できるので、人体を損傷するなどの恐れがなくな
る。As described above, in this extra-thick plate drill screw, since the shaft portion and the drill portion protruding to the back side of the extra-thick plate can be removed, there is no fear of damaging a human body.
【００１０】[0010]
【実施例】以下、この発明を図示の実施例により詳細に
説明する。図１において、１は頭部、２はねじ部、３は
ドリル部である。上記ねじ部２とドリル部３との間に、
直径がドリル部３の外接円の直径の５０％から９０％の
大きさの軸部５を設けている。上記軸部５の大きさは、
被穿孔物である極厚板１１の厚さが厚い程、細くして、
切削屑を外部に出し易くしている。この軸部５の長さ
は、ドリル部３が極厚板１１を穿孔することにより生ず
る切削屑を外部に排出できるように、極厚板１１の長さ
に応じて長くしている。さらに、この軸部５のねじ部側
の箇所には、圧造により形成した破断用の環状の溝６を
設けている。なお、上記ドリル部３のリードの長さは極
厚板１１の厚さよりも短かくしている。The present invention will be described in detail below with reference to the embodiments shown in the drawings. In FIG. 1, 1 is a head part, 2 is a screw part, and 3 is a drill part. Between the screw part 2 and the drill part 3,
The shaft portion 5 having a diameter of 50% to 90% of the diameter of the circumscribed circle of the drill portion 3 is provided. The size of the shaft portion 5 is
The thicker the extremely thick plate 11 that is the object to be drilled, the thinner
Makes it easy to take out cutting waste. The length of the shaft portion 5 is set to be long according to the length of the extra thick plate 11 so that the cutting waste generated by the drill portion 3 drilling the extra thick plate 11 can be discharged to the outside. Further, an annular groove 6 for breaking formed by forging is provided at a portion of the shaft portion 5 on the screw portion side. The length of the lead of the drill portion 3 is shorter than the thickness of the extra thick plate 11.
【００１１】また、上記ドリル部３には第１すくい面３
aと第２すくい面３bを設けて、切削性を良くしている。The first rake face 3 is provided on the drill portion 3.
By providing a and the second rake face 3b, the machinability is improved.
【００１２】なお、図１において、７はワッシャー部で
あり、１２は極厚板１１にドリルねじによって締め付け
られる被締付部材である。In FIG. 1, 7 is a washer portion, and 12 is a member to be fastened to the extra thick plate 11 with a drill screw.
【００１３】上記構成の極厚板用ドリルねじを、極厚板
１１と被締付部材１２を重ねた上からねじ込んでいく
と、ドリル部３が被締付部材１２および極厚板１１を穿
孔し、切削屑はドリル部３の外接円の直径よりも小径の
軸部５の回りを通して上方に排出される。この軸部５の
長さは、ドリル部３が極厚板１１および被締付部材１２
を穿孔している間において、切削屑を外部に排出するの
に十分な長さを有しているから、この軸部５のまわりの
空間を通して切削屑が外部に排出され、切削屑が内部に
つまるようなことはない。また、このドリルねじは、ド
リル部３に第１すくい面３ａと、第２すくい面３bを設
けているから、切削性が良い。When the extra-thick plate drill screw having the above-mentioned structure is screwed into the extra-thick plate 11 and the member 12 to be fastened, the drill portion 3 punches the member 12 to be fastened and the extra-thick plate 11. However, the cutting waste is discharged upward through a shaft portion 5 having a diameter smaller than the diameter of the circumscribing circle of the drill portion 3. The length of the shaft portion 5 is such that the drill portion 3 has an extremely thick plate 11 and a member 12 to be fastened.
Since it has a sufficient length to discharge the cutting chips to the outside while the hole is being drilled, the cutting chips are discharged to the outside through the space around the shaft portion 5, and the cutting chips are discharged to the inside. There is no such thing as a jam. Further, since this drill screw has the first rake face 3a and the second rake face 3b on the drill portion 3, it has good cutting performance.
【００１４】上記ドリル部３によって穿孔された穴に
は、ねじ部２がねじ込まれていき、図１に示すように、
極厚板１１に被締付部材１２を締め付ける。この状態
で、軸部５およびドリル部３は極厚板１１の裏側に突出
している。The screw portion 2 is screwed into the hole drilled by the drill portion 3 as shown in FIG.
The member 12 to be fastened is fastened to the extra thick plate 11. In this state, the shaft portion 5 and the drill portion 3 project to the back side of the extra thick plate 11.
【００１５】その後、図２に示すように、ドリル部３に
ハンマー１５で横方向から衝撃を与えると、環状溝６の
箇所で軸部５が破断され、この軸部５およびドリル部３
がねじ部２から分離されてしまう。こうすることによっ
て、極厚板１１の裏側にドリル部３および軸部５が突出
していることがないので、人体などを損傷する恐れもな
くなり、また見映えも良くなる。After that, as shown in FIG. 2, when the hammer is applied to the drill section 3 from the lateral direction, the shaft section 5 is broken at the annular groove 6, and the shaft section 5 and the drill section 3 are broken.
Will be separated from the screw part 2. By doing so, since the drill portion 3 and the shaft portion 5 do not project to the back side of the extra thick plate 11, there is no risk of damaging a human body and the appearance is also improved.
【００１６】さらに、この極厚板用ドリルねじは、軸部
５およびドリル部３をねじ部２から分離することができ
るので、薄板に対しても使用することが可能である。Further, since the shaft screw 5 and the drill portion 3 can be separated from the screw portion 2, this extra thick plate drill screw can be used for a thin plate.
【００１７】さらに、ドリル部３の外接円の直径よりも
小径の軸部５をドリル部３とねじ部２の間に設けて、軸
部５の回りを通して切削屑を排出することができるよう
にしたので、ドリル部３の長さを短かくすることがで
き、したがって、ドリル部３を製作するための金型の製
作コストを低減でき、ドリル部３を製作するための鍛造
機械を小型化することができ、このドリルねじの製造コ
ストを低減することができる。Further, a shaft portion 5 having a diameter smaller than the diameter of the circumscribed circle of the drill portion 3 is provided between the drill portion 3 and the screw portion 2 so that cutting waste can be discharged around the shaft portion 5. Therefore, the length of the drill part 3 can be shortened, and therefore, the manufacturing cost of the die for manufacturing the drill part 3 can be reduced, and the forging machine for manufacturing the drill part 3 can be downsized. Therefore, the manufacturing cost of this drill screw can be reduced.
【００１８】上記実施例では、上記ドリル部５は断面丸
型の丸棒形状としているが、角柱形状であってもよい。
また、上記破断用の環状溝６の箇所は、横方向の衝撃に
より破断しやすいように、脆性を付加する熱処理などを
加えてもよい。また、上記実施例のドリル部に第２すく
い面３bを設けているが、第２すくい面３bは設けなくて
もよい。In the above embodiment, the drill portion 5 has a round bar shape with a round cross section, but it may have a prismatic shape.
In addition, heat treatment for adding brittleness or the like may be applied to the location of the annular groove 6 for fracture so that the annular groove 6 is easily fractured by a lateral impact. Further, although the second rake face 3b is provided in the drill portion of the above-mentioned embodiment, the second rake face 3b may not be provided.
【００１９】[0019]
【発明の効果】以上より明らかなように、この発明によ
れば、ドリル部とねじ部との間に、上記ドリル部の外接
円の直径よりも小径の軸部を設けているので、上記ドリ
ル部のリードを短かくしても切削屑はこの軸部の外周側
の空間を通して外部に排出することができる。したがっ
て、ドリル部の長さをが短かくすることができ、ドリル
部の製作用の金型を小型化でき、鍛造機を小型化でき、
ひいてはこのドリルねじの製造コストを低減することが
できる。As is apparent from the above, according to the present invention, since the shaft portion having a diameter smaller than the diameter of the circumscribed circle of the drill portion is provided between the drill portion and the screw portion, the drill described above is provided. Even if the lead of the section is shortened, the cutting waste can be discharged to the outside through the space on the outer peripheral side of the shaft section. Therefore, the length of the drill portion can be shortened, the die for manufacturing the drill portion can be downsized, and the forging machine can be downsized.
Consequently, the manufacturing cost of this drill screw can be reduced.
【００２０】また、この発明によれば、上記軸部のねじ
部側の箇所に破断用の溝を設けているので、例えばドリ
ル部に横方向から衝撃を与えることによって、破断用の
環状溝の箇所で破断して、極厚板の裏側に突出した軸部
およびドリル部をねじ部から分離することができる。し
たがって、極厚板の裏側にドリル部および軸部が突出す
ることがなく、人体損傷などの危険性をなくすることが
できる。Further, according to the present invention, since the groove for breaking is provided at the position on the screw portion side of the shaft portion, the annular groove for breaking is formed by, for example, applying an impact from the lateral direction to the drill portion. It is possible to separate the shaft portion and the drill portion, which are broken at a point and project to the back side of the extra thick plate, from the screw portion. Therefore, the drill portion and the shaft portion do not project to the back side of the extra-thick plate, and the risk of human injury can be eliminated.
【００２１】また、このようにドリル部および軸部をね
じ部から分離することができるので、この極厚板用ドリ
ルねじは比較的薄い板にも使用することができ、この極
厚板用ドリルねじは汎用性が高いという利点も有する。Further, since the drill portion and the shaft portion can be separated from the screw portion in this way, the drill screw for the extra thick plate can be used for a relatively thin plate. Screws also have the advantage of high versatility.
【図１】 図１はこの発明の１実施例の極厚板用ドリル
ねじを極厚板と被締付部材にねじ込んだ状態を示す図で
ある。FIG. 1 is a view showing a state in which a drill screw for an extremely thick plate according to an embodiment of the present invention is screwed into an extremely thick plate and a member to be fastened.
【図２】 図２はこの極厚板用ドリルねじを破断用の溝
の箇所で破断した状態を示す図である。FIG. 2 is a view showing a state in which the drill screw for an extremely thick plate is broken at a groove for breaking.
１ 頭部 ２ ねじ部 ３ ドリル部 ５ 軸部 ３a 第１すくい面 ３b 第２すくい
面。1 head part 2 screw part 3 drill part 5 shaft part 3a 1st rake face 3b 2nd rake face.
Claims (1)
板用ドリルねじにおいて、 上記ドリル部とねじ部との間に、上記ドリル部の外接円
よりも細い軸部を設け、上記軸部の上記ねじ部側の箇所
に破断用の溝を設けて、上記溝の箇所を破断して、上記軸
部とドリル部をねじ部から分離できるようにしたことを
特徴とする極厚板用ドリルねじ。1. A drill screw for an extremely thick plate having a head portion, a screw portion, and a drill portion, wherein a shaft portion thinner than a circumscribed circle of the drill portion is provided between the drill portion and the screw portion, An extra-thick plate characterized in that a groove for breaking is provided at a position on the screw part side of the shaft part, and the shaft part and the drill part can be separated from the screw part by breaking the groove part. Drill screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15787392A JPH062706A (en) | 1992-06-17 | 1992-06-17 | Drill screw for very thick plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15787392A JPH062706A (en) | 1992-06-17 | 1992-06-17 | Drill screw for very thick plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH062706A true JPH062706A (en) | 1994-01-11 |
Family
ID=15659277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15787392A Pending JPH062706A (en) | 1992-06-17 | 1992-06-17 | Drill screw for very thick plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH062706A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001042665A3 (en) * | 1999-12-09 | 2002-01-10 | Ronald Taylor | Anchoring element |
| JP2008038490A (en) * | 2006-08-07 | 2008-02-21 | Nippon Steel Corp | Shaped sheet pile for continuous underground wall, and method of producing the same |
| WO2012094654A3 (en) * | 2011-01-07 | 2013-01-10 | Eyeego, Llc | Screw with breakaway and methods of using the same |
| RU2818403C1 (en) * | 2023-08-23 | 2024-05-02 | Вячеслав Сергеевич Перфильев | Self-drilling bolt with tear-off drilling part |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS597605U (en) * | 1982-07-02 | 1984-01-18 | 塩田 力 | Western umbrella with improved functionality before and after use |
| JPS61189310A (en) * | 1985-02-15 | 1986-08-23 | 株式会社 ヤマヒロ | Self-drilling tapping screw |
-
1992
- 1992-06-17 JP JP15787392A patent/JPH062706A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS597605U (en) * | 1982-07-02 | 1984-01-18 | 塩田 力 | Western umbrella with improved functionality before and after use |
| JPS61189310A (en) * | 1985-02-15 | 1986-08-23 | 株式会社 ヤマヒロ | Self-drilling tapping screw |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001042665A3 (en) * | 1999-12-09 | 2002-01-10 | Ronald Taylor | Anchoring element |
| GB2357130B (en) * | 1999-12-09 | 2004-02-18 | Ronald Taylor | Anchorage |
| JP2008038490A (en) * | 2006-08-07 | 2008-02-21 | Nippon Steel Corp | Shaped sheet pile for continuous underground wall, and method of producing the same |
| WO2012094654A3 (en) * | 2011-01-07 | 2013-01-10 | Eyeego, Llc | Screw with breakaway and methods of using the same |
| RU2818403C1 (en) * | 2023-08-23 | 2024-05-02 | Вячеслав Сергеевич Перфильев | Self-drilling bolt with tear-off drilling part |
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