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1. 发明申请

US20230054778A1 HOLLOW DRILL FOR MEDICAL USE 有权
公开(公告)号：US20230054778A1
公开(公告)日：2023-02-23
申请号：US17619229
申请日：2020-12-26
申请人： BIC TOOL CO., LTD.
发明人： Koichi Arai , Giichi Arai , Katsuyo Kimura , Satoshi Teshima
IPC分类号： A61B17/16
摘要： To design a novel tip end shape that performs most of the drilling process so as to prevent chips from entering the gap between the hollow drill bit and the small-diameter drill bit fitted into the hollow portion of the hollow drill bit as well as to provide a structure of the outer periphery so as to allow chips to be discharged toward the outer periphery and prevent them from entering the gap portion.
A hollow drill bit for medical use of the present invention is characterized in comprising a hollow portion that penetrates the axial center in the axial direction from the tip end to the distal end; and four cutting edges at the tip end section, wherein arc-shaped outer peripheral grooves are helically formed in the cylinder-shaped outer peripheral portion.

2. 发明授权

US11364555B2 Drill 有权
公开(公告)号：US11364555B2
公开(公告)日：2022-06-21
申请号：US16369223
申请日：2019-03-29
申请人： Bic Tool Co., Ltd
发明人： Koichi Arai , Giichi Arai , Katsuyo Kimura , Satoshi Teshima
IPC分类号： B23B51/02
摘要： Provided herein is a drill having less possibility of cracks in an inner periphery of a drilled workpiece and deformation of a workpiece upon penetrating with a drill, as well as delamination.
A drill according to the present invention comprises two cutting blades which are formed symmetrical about an axis of rotation, wherein each of the cutting blades has a main cutting blade formed from a drill tip toward a peripheral side of the drill to become a shape with curves, a thinning cutting blade in a shape with curves formed in closer to the drill tip than the main cutting blade, and an U-shaped cutting blade in a shape with curves formed in closer to the periphery of the drill than the thinning cutting blade.

3. 发明授权

US08579557B2 Drill 有权
标题翻译：钻头
公开(公告)号：US08579557B2
公开(公告)日：2013-11-12
申请号：US13816895
申请日：2012-02-06
申请人： Koichi Arai , Giichi Arai , Katsuyo Kimura
发明人： Koichi Arai , Giichi Arai , Katsuyo Kimura
IPC分类号： B23B51/02
CPC分类号： B23B51/02 , B23B2251/04 , B23B2251/085 , B23B2251/14 , B23B2251/18 , B24B3/32
摘要： [Problem] To provide a drill which enables a great reduction in cutting resistance and easy performance of a drilling operation by human power using a hand drill, a drilling machine, or the like.[Solution] A drill has two cutting edges formed symmetrically with respect to a rotation axis, and is subjected to thinning at the tip thereof. The cutting edge is configured from a thinned cutting edge (1) which extends in a shape including a curved line from a chisel edge to the outer peripheral side of the drill, and a main cutting edge (2) which extends from the end of the thinned cutting edge to the outer peripheral end of the drill when viewed from the tip side of the drill, and a thinned surface formed by the thinned cutting edge is formed into an approximately parabolic shape inclined in a drill axis direction when viewed from the front side of the drill.
摘要翻译： [问题]提供一种使用手钻，钻孔机械等能够大幅度降低切削阻力并且容易地进行人力钻孔操作的钻头的钻头。 [解决方案]钻具具有相对于旋转轴对称形成的两个切削刃，并且在其尖端处经受变薄。所述切削刃由从所述钻头的凿边缘到所述外周侧的弯曲线形状的延长的切削刃（1）构成，以及从所述切削刃的末端延伸的主切削刃（2）当从钻头的尖端侧观察时，将切削刃变细到钻头的外周端，并且由前述变薄的切削刃形成的由薄板切削刃形成的变薄的表面形成为从钻头轴线方向倾斜的大致抛物线形状的钻头。

4. 发明公开

US20240217007A1 DRILL 审中-公开
公开(公告)号：US20240217007A1
公开(公告)日：2024-07-04
申请号：US18569556
申请日：2022-07-27
申请人： BIC TOOL CO., LTD.
发明人： Koichi ARAI , Giichi ARAI , Katsuyo KIMURA , Satoshi TESHIMA
IPC分类号： B23B51/02
CPC分类号： B23B51/02
摘要： The problem to be solved is to provide a drill that is difficult to break and has a good cutting ability. The drill according to the present invention comprises: a first and a second cutting edge formed symmetrically with respect to a rotation axis; a first and a second relief surface formed symmetrically with respect to the rotation axis on back surfaces of the first and the second cutting edge, respectively; one chip-discharging groove formed from one of the first and the second cutting edge toward an outer peripheral side; and one or more arc-shaped grooves formed from another of the first and the second cutting edge toward the outer peripheral side.

5. 发明申请

US20190308254A1 DRILL 审中-公开
公开(公告)号：US20190308254A1
公开(公告)日：2019-10-10
申请号：US16369223
申请日：2019-03-29
申请人： Bic Tool Co., Ltd
发明人： Koichi Arai , Giichi Arai , Katsuyo Kimura , Satoshi Teshima
IPC分类号： B23B51/02
摘要： Provided herein is a drill having less possibility of cracks in an inner periphery of a drilled workpiece and deformation of a workpiece upon penetrating with a drill, as well as delamination.A drill according to the present invention comprises two cutting blades which are formed symmetrical about an axis of rotation, wherein each of the cutting blades has a main cutting blade formed from a drill tip toward a peripheral side of the drill to become a shape with curves, a thinning cutting blade in a shape with curves formed in closer to the drill tip than the main cutting blade, and an U-shaped cutting blade in a shape with curves formed in closer to the periphery of the drill than the thinning cutting blade.

6. 发明申请

US20220241873A1 DRILL FOR CARBON-FIBER COMPOSITE MATERIAL 有权
公开(公告)号：US20220241873A1
公开(公告)日：2022-08-04
申请号：US17619207
申请日：2020-06-10
申请人： BIC TOOL CO., LTD.
发明人： Koichi Arai , Giichi Arai , Katsuyo Kimura , Satoshi Teshima
IPC分类号： B23B51/02
摘要： The drill of the invention has: two cutting edges, each having a main cutting edge and a thinned cutting edge, wherein two relief surfaces formed symmetrically around rotation axis, first and second margin portions are formed, the first margin portions have a forward-end small-diameter portion with diameter smaller than the drill diameter, that is formed from the side of the drill forward-end toward the drill rearward-end, the second margin portions have a second forward-end small-diameter portion with diameter smaller than the first forward-end small-diameter portion, that is formed from the side of the drill forward-end toward the side of the drill rearward-end, the first forward-end small-diameter portion and the second forward-end small-diameter portion have inclination portions, the diameters of which gradually increase from the side of the drill forward-end toward the side of the drill rearward-end, and the inclination portions of the first forward-end small-diameter portion have relief surfaces.

7. 发明申请

US20130142583A1 Drill 有权
公开(公告)号：US20130142583A1
公开(公告)日：2013-06-06
申请号：US13816895
申请日：2012-02-06
申请人： Koichi Arai , Giichi Arai , Katsuyo Kimura
发明人： Koichi Arai , Giichi Arai , Katsuyo Kimura
IPC分类号： B23B51/02
CPC分类号： B23B51/02 , B23B2251/04 , B23B2251/085 , B23B2251/14 , B23B2251/18 , B24B3/32
摘要： [Problem] To provide a drill which enables a great reduction in cutting resistance and easy performance of a drilling operation by human power using a hand drill, a drilling machine, or the like.[Solution] A drill has two cutting edges formed symmetrically with respect to a rotation axis, and is subjected to thinning at the tip thereof. The cutting edge is configured from a thinned cutting edge (1) which extends in a shape including a curved line from a chisel edge to the outer peripheral side of the drill, and a main cutting edge (2) which extends from the end of the thinned cutting edge to the outer peripheral end of the drill when viewed from the tip side of the drill, and a thinned surface formed by the thinned cutting edge is formed into an approximately parabolic shape inclined in a drill axis direction when viewed from the front side of the drill.

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