JP2013083308A

JP2013083308A - Drill screw structure

Info

Publication number: JP2013083308A
Application number: JP2011223569A
Authority: JP
Inventors: Huang Jia Su; 蘇皇家
Original assignee: HOMN REEN ENTERPRISE CO Ltd; HOMN REEN ENTPR CO Ltd
Current assignee: HOMN REEN ENTERPRISE CO Ltd; HOMN REEN ENTPR CO Ltd
Priority date: 2011-10-11
Filing date: 2011-10-11
Publication date: 2013-05-09

Abstract

PROBLEM TO BE SOLVED: To provide a drill screw structure with which winding of a scrap can be prevented and a screwing speed is enhanced.SOLUTION: The drill screw structure has a screw head and a rod provided to the screw head. On the circumference surface of the rod, a helical tooth is annularly provided, the end of the rod forms a columnar drill blade, the drill blade forms a conical surface outside, on the drill blade, two scrap discharge grooves are provided, and at the connection point of the scrap discharge groove and the conical surface, an outer cutting blade is formed respectively. In the vicinity of the boundary between the conical surface and the outer cutting blade, an inverted-V shaped cutting edge is formed, on both sides of the cutting edge, inner cutting blades are formed respectively, the cutting edge forms two tip points with the outer cutting blade, and the two tip points simultaneously includes the outer cutting blade and the inner cutting blade. The tip points form an included angle, the angle of the included angle is 15 to 135°, and the distance between the two tip points is not larger than 25% of the outer diameter of the drill blade.

Description

本発明はドリルねじの構造に関し、特に屑が巻きつくのを防ぐことができ、ねじ込み速度が向上するドリルねじの構造に関する。 The present invention relates to a structure of a drill screw, and more particularly to a structure of a drill screw that can prevent scraps from being wound and improve a screwing speed.

図１を参照する。一般的な従来のドリルねじ１は、ねじ頭１１と、ねじ頭１１に設けられた棒体１２とによってなる。その内、棒体１２の周縁面１２１には、螺旋状の歯部１２２が環状に設けられ、棒体１２の末端はドリル刃部１２３を形成する。ドリル刃部１２３は外に向かって錐状面１２４を形成し、ドリル刃部１２３には二つの屑排出溝１２５が設けられ、屑排出溝１２５と、錐状面１２４及び棒体１２の周縁面１２１の連結箇所には、それぞれ切削刃１２６が形成される。 Please refer to FIG. A general conventional drill screw 1 includes a screw head 11 and a rod body 12 provided on the screw head 11. Among them, on the peripheral surface 121 of the rod body 12, a spiral tooth portion 122 is provided in an annular shape, and the end of the rod body 12 forms a drill blade portion 123. The drill blade portion 123 forms a conical surface 124 outward, and the drill blade portion 123 is provided with two waste discharge grooves 125, and the waste discharge groove 125, the conical surface 124, and the peripheral surface of the rod body 12. A cutting blade 126 is formed at each of the 121 connecting portions.

従来のドリルねじ１で螺合作業を行う時、まず切削刃１２６によって削って孔を開け、それにより、ドリルねじ１をねじ込むことができるようになる。その時の削る過程で生じる屑は、屑排出溝１２５によって、ドリル刃部１２３の末端から上へと移動して外に排出される。以上により、螺合と位置固定効果が達成される。しかしながら、従来のドリルねじ１で鉄板に穴を開けるときには、それにより生じる屑は、細長い形状を呈して歯部１２２に巻き付き、その削られた屑が素早く被加工部材外に排出できず、ねじ込む速度が不安定になり、それにより、ドリルねじ１のねじ込みが邪魔され、ドリルねじ１をねじ込むのにかかる時間が長くなり、さらには、ネジが折れてしまうことがある。 When screwing with the conventional drill screw 1, first, the cutting blade 126 is used to cut and open a hole so that the drill screw 1 can be screwed. The scrap generated in the cutting process at that time moves upward from the end of the drill blade 123 by the scrap discharge groove 125 and is discharged to the outside. As described above, screwing and position fixing effects are achieved. However, when a hole is made in the steel plate with the conventional drill screw 1, the scrap generated thereby takes an elongated shape and winds around the tooth portion 122, and the scraped scrap cannot be quickly discharged out of the workpiece and is screwed in. May become unstable, thereby hindering the screwing of the drill screw 1, increasing the time taken to screw the drill screw 1, and possibly breaking the screw.

そこで、本発明は、屑が巻きつくのを防ぐことができ、ねじ込み速度が向上するドリルねじの構造を提供することを目的とする。 Then, an object of this invention is to provide the structure of the drill screw which can prevent that a scrap wraps around and improves the screwing speed.

本発明によるドリルねじの構造は、ねじ頭と、ねじ頭に設けられた棒体とによって構成する。前記棒体の周縁面には、螺旋状の歯部が環状に設けられ、前記棒体末端は円柱状のドリル刃部を形成し、前記ドリル刃部は外に向かって錐状面を形成し、前記ドリル刃部には二つの屑排出溝が設けられ、前記屑排出溝と前記錐状面の連結箇所には、それぞれ、外切削刃が形成される。前記錐状面と外切削刃の境界付近には、逆Ｖ字型を呈する刃口が形成され、前記刃口の両側には、内切削刃がそれぞれ形成され、前記逆Ｖ字型を呈する刃口は、外切削刃と二つの先端点を形成し、前記二つの先端点は、外切削刃と内切削刃とを同時に備えている。前記先端点は夾角を形成する。外切削刃と内切削刃を同時に備える二つの先端点により、生じる屑を効果的に切断することができ、歯部に屑がまきつくのを防ぎ、ねじ込む速度を高めることができる。また、前記夾角の角度は１５度から１３５度の間であり、二つの先端点の距離は、ドリル刃部外径の２５％より大きくない。それにより、ドリルネジで削って孔を開ける時に、優れた切削効果と安定性を得ることができる。 The structure of the drill screw according to the present invention is constituted by a screw head and a rod provided on the screw head. A spiral tooth portion is provided in an annular shape on the peripheral surface of the rod body, the end of the rod body forms a cylindrical drill blade portion, and the drill blade portion forms a conical surface outward. The drill blade portion is provided with two scrap discharge grooves, and outer cutting blades are formed at the connecting portions of the scrap discharge groove and the conical surface, respectively. An edge having an inverted V shape is formed in the vicinity of the boundary between the conical surface and the outer cutting edge, and an inner cutting edge is formed on each side of the edge and the edge having the inverted V shape is formed. The mouth forms an outer cutting blade and two tip points, and the two tip points simultaneously include an outer cutting blade and an inner cutting blade. The tip point forms a depression angle. The two tip points having the outer cutting blade and the inner cutting blade at the same time can effectively cut the generated waste, prevent the waste from sticking to the tooth portion, and increase the screwing speed. The depression angle is between 15 degrees and 135 degrees, and the distance between the two tip points is not greater than 25% of the outer diameter of the drill blade. Thereby, when cutting with a drill screw to open a hole, an excellent cutting effect and stability can be obtained.

従来のドリルねじを示した斜視図である。It is the perspective view which showed the conventional drill screw. 本発明のドリルねじを示した斜視図である。It is the perspective view which showed the drill screw of this invention. 本発明のドリルねじを示した平面図である。It is the top view which showed the drill screw of this invention. 本発明ドリルねじの動作を示した説明図である。It is explanatory drawing which showed operation | movement of this invention drill screw. 本発明ドリルねじの動作を示した説明図である。It is explanatory drawing which showed operation | movement of this invention drill screw. 本発明のテストレポートの比較図である。It is a comparison figure of the test report of this invention.

図２と図３に示すように、本発明のドリルねじ２は、ねじ頭２１と、ねじ頭２１に設けられる棒体２２によって構成する。棒体２２の周縁面２２１には、螺旋状の歯部２２２が環状に設けられ、棒体２２の末端には円柱状のドリル刃部２２３が形成され、ドリル刃部２２３は外に向かって錐状面２２４を形成し、ドリル刃部２２３には二つの屑排出溝２２５が設けられ、屑排出溝２２５と錐状面２２４の連結箇所には、それぞれ外切削刃２２６が形成される。その内、錐状面２２４と外切削刃２２６の境界付近には、逆Ｖ字型を呈する刃口２３が形成され、刃口２３の両側には、それぞれ、内切削刃２３１が形成され、刃口２３は、外切削刃２２６と二つの先端点２３２を形成し、二つの先端点２３２は、外切削刃２２６と内切削刃２３１を同時に備える。また、先端点２３２は、夾角θを有し、夾角θの好ましい角度は、１５度から１３５度の間であり、その角度だと、先端点２３２の削る動作が行いやすくなる。また、二つの先端点２３２の間の好ましい距離Ｄは、ドリル刃部２２３の外径の２５％より大きくなく、それにより、ドリル刃部２２３で削る時の安定性が向上する。 As shown in FIGS. 2 and 3, the drill screw 2 of the present invention is constituted by a screw head 21 and a rod body 22 provided on the screw head 21. On the peripheral surface 221 of the rod body 22, a spiral tooth portion 222 is provided in an annular shape, and a cylindrical drill blade portion 223 is formed at the end of the rod body 22, and the drill blade portion 223 is conical toward the outside. The surface 224 is formed, the drill blade part 223 is provided with two scrap discharge grooves 225, and the outer cutting blade 226 is formed at the connection point between the scrap discharge groove 225 and the conical surface 224, respectively. Among them, an inverted V-shaped blade mouth 23 is formed near the boundary between the conical surface 224 and the outer cutting blade 226, and an inner cutting blade 231 is formed on each side of the blade mouth 23. The mouth 23 forms an outer cutting blade 226 and two tip points 232, and the two tip points 232 include the outer cutting blade 226 and the inner cutting blade 231 at the same time. Further, the tip point 232 has a depression angle θ, and a preferable angle of the depression angle θ is between 15 degrees and 135 degrees, and when it is that angle, the cutting operation of the tip point 232 is facilitated. Also, the preferred distance D between the two tip points 232 is not greater than 25% of the outer diameter of the drill blade 223, thereby improving stability when cutting with the drill blade 223.

本発明の実施を行う際は、図４と図５に示すように、ドリルねじ２を垂直にし、その刃口２３の二つの先端点２３２を被加工部材３の表面に当接させ、続けて、被加工部材３に対して切削を行いねじ込む。この時、二つの先端点２３２によって、ドリルねじ２で孔を開ける時に、優れた位置固定効果を得ることができるとともに、刃口２３とドリル刃部２２３によって自然にバランスがとれ、ドリルねじ２のねじ込む角度を自動的に調整することができる。ドリルねじ２の刃口２３とドリル刃部２２３を被加工部材３に接触させて切削を行う時、被加工部材３にねじ込む過程で生じる長い棒状の屑は、二つの先端点２３２がそれぞれ備える内切削刃２３１と外切削刃２２６により適宜切断され、屑はスライス状となり、二つの屑排出溝２２５から排出されるため、屑が歯部２２２に巻きつくのを防ぐことができる。そして、ドリルねじ２を、被加工部材３に素早くねじ込むことができ、屑をスムーズに排出した邪魔するものがない状態でドリルねじ２を被加工部材３内に螺合させることができる。 When carrying out the present invention, as shown in FIGS. 4 and 5, the drill screw 2 is made vertical, the two tip points 232 of the blade edge 23 are brought into contact with the surface of the workpiece 3, and then Then, the workpiece 3 is cut and screwed. At this time, when the hole is drilled by the drill screw 2 by the two tip points 232, an excellent position fixing effect can be obtained, and the blade mouth 23 and the drill blade portion 223 are naturally balanced, and the drill screw 2 The screwing angle can be adjusted automatically. When cutting is performed by bringing the cutting edge 23 of the drill screw 2 and the drill blade portion 223 into contact with the workpiece 3, long rod-like scraps generated in the process of screwing into the workpiece 3 are provided in the two tip points 232. The cutting blade 231 and the outer cutting blade 226 are appropriately cut, and the scrap is sliced and discharged from the two scrap discharge grooves 225, so that the scrap can be prevented from being wound around the tooth portion 222. Then, the drill screw 2 can be quickly screwed into the workpiece 3, and the drill screw 2 can be screwed into the workpiece 3 in a state where there is no obstacle to smoothly discharge the waste.

図６に示すように、本発明は、ドイツのテスト基準ＤＩＮ７５０４でテストを行ったところ、確かに、ねじ込む速度を速める効果があった。 As shown in FIG. 6, the present invention was tested according to the German test standard DIN7504. As a result, there was an effect of increasing the screwing speed.

本発明の効果は以下の通りである。ドリルねじ２の錐状面２２４と外切削刃２２６の境界付近に逆Ｖ字型を呈する刃口２３が設けられ、刃口２３の両側は、内切削刃２３１をそれぞれ形成し、刃口２３は外切削刃２２６と二つの先端点２３２を形成し、二つの先端点２３２は、外切削刃２２６と内切削刃２３１を同時に備え、先端点２３２は夾角θを形成し、各先端点２３２の夾角θの角度は、１５度から１３５度の間であり、それにより、先端点２３２の削る動作をしやすくなる。また、二つの先端点２３２の距離Ｄは、ドリル刃部２２３の外径の２５％より大きくないため、ドリルねじ２で削る時に優れた安定性を得ることができる。また、ドリルねじ２で孔を開ける時に生じた屑は、二つの先端点２３２がそれぞれ備える内切削刃２３１と外切削刃２２６によって、適宜切断され、それにより屑は長く伸び続けて歯部２２２に巻きつくことがなく、しいては、歯部２２２が痛むのを避けることができるとともに、ネジが折れるのを防ぐことができる。また、それと同時に、刃口２３の内切削刃２３１も被加工部材３を削る効果を備えるとともに、他辺の屑を切断し、すべての屑はスライス状になって屑排出溝２２５から排出される。それにより、ドリルねじ２の屑排出性能を高めることができるとともに、螺合の安定度とねじ込み速度を向上させる効果がある。 The effects of the present invention are as follows. In the vicinity of the boundary between the conical surface 224 of the drill screw 2 and the outer cutting blade 226, a blade edge 23 having an inverted V shape is provided, and on both sides of the blade edge 23, an inner cutting blade 231 is formed, respectively. The outer cutting blade 226 and two tip points 232 are formed. The two tip points 232 include the outer cutting blade 226 and the inner cutting blade 231 at the same time. The tip point 232 forms a depression angle θ. The angle θ is between 15 degrees and 135 degrees, which facilitates the cutting operation of the tip point 232. Further, since the distance D between the two tip points 232 is not greater than 25% of the outer diameter of the drill blade 223, excellent stability can be obtained when cutting with the drill screw 2. In addition, the scrap generated when the hole is drilled by the drill screw 2 is appropriately cut by the inner cutting blade 231 and the outer cutting blade 226 provided at the two end points 232, respectively. Without being wound, it is possible to avoid the teeth 222 from being damaged and to prevent the screw from being broken. At the same time, the inner cutting blade 231 of the blade opening 23 has an effect of cutting the workpiece 3 and cuts off the other side scrap, and all the waste is sliced and discharged from the waste discharge groove 225. . Thereby, the scrap discharging performance of the drill screw 2 can be enhanced, and the stability of screwing and the screwing speed can be improved.

１ドリルねじ
１１ねじ頭
１２棒体
１２１周縁面
１２２歯部
１２３ドリル刃部
１２４錐状面
１２５屑排出溝
１２６切削刃
２ドリルねじ
２１ねじ頭
２２棒体
２２１周縁面
２２２歯部
２２３ドリル刃部
２２４錐状面
２２５屑排出溝
２２６外切削刃
２３刃口
２３１内切削刃
２３２先端点
３被加工部材
θ 夾角
Ｄ距離 1 Drill screw
11 Screw head
12 Bar body 121 Peripheral surface
122 Tooth part 123 Drill blade part
124 conical surface 125 waste discharging groove
126 Cutting blade 2 Drill screw
21 Screw head
22 Bar body 221 peripheral surface
222 Teeth 223 Drill blade
224 Conical surface 225 Waste discharge groove
226 Outer cutting blade 23
231 Inner cutting blade 232 Tip point 3 Work piece θ Depression angle
D distance

Claims

A drill screw structure constituted by a screw head and a rod provided on the screw head,
A spiral tooth portion is provided in an annular shape on the peripheral surface of the rod body, the end of the rod body forms a cylindrical drill blade portion, and the drill blade portion forms a conical surface outward. , The drill blade portion is provided with two scrap discharge grooves, the outer cutting blade is formed at each of the connecting portions of the scrap discharge groove and the conical surface,
In the vicinity of the boundary between the conical surface and the outer cutting blade, an inverted V-shaped cutting edge is formed, and inner cutting blades are formed on both sides of the cutting edge, respectively. Two tip points are formed, the two tip points are provided with an outer cutting blade and an inner cutting blade at the same time, the tip points form a depression angle,
The angle of the depression angle is between 15 degrees and 135 degrees, and the distance between the two tip points is not greater than 25% of the drill blade outer diameter.