专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP3970890A1 DRILL FOR CARBON-FIBER COMPOSITE MATERIAL 审中-实审
公开(公告)号：EP3970890A1
公开(公告)日：2022-03-23
申请号：EP20831443.5
申请日：2020-06-10
申请人： Bic Tool Co., Ltd.
发明人： ARAI Koichi , ARAI Giichi , KIMURA Katsuyo , TESHIMA Satoshi
IPC分类号： B23B51/00
摘要： The problem to be solved by the present invention is to provide a drill for a carbon fiber composite material that is less likely to cause defects in the carbon fiber composite material after drilling, such as burrs, delaminations (inter-layer peeling phenomena), carbon fiber splinters, or mounds around the hole.
The drill according to the present invention has: two cutting edges, each of the two cutting edges having a main cutting edge and a thinned cutting edge, wherein two relief surfaces formed symmetrically around a rotation axis, wherein first margin portions and second margin portions are formed, wherein the first margin portions have a forward-end small-diameter portion with a diameter smaller than the drill diameter, that is formed from the side of the drill forward end toward the drill rearward end, wherein the second margin portions have a second forward-end small-diameter portion with a 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, wherein 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 wherein the inclination portions of the first forward-end small-diameter portion have relief surfaces.

2. 发明公开

EP3970638A1 HOLLOW DRILL FOR MEDICAL USE 审中-实审
公开(公告)号：EP3970638A1
公开(公告)日：2022-03-23
申请号：EP20934887.9
申请日：2020-12-26
申请人： Bic Tool Co., Ltd.
发明人： ARAI Koichi , ARAI Giichi , KIMURA Katsuyo , TESHIMA Satoshi
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.

3. 发明授权

EP2684630B1 DRILL 有权
公开(公告)号：EP2684630B1
公开(公告)日：2017-12-06
申请号：EP12751858.7
申请日：2012-02-06
申请人： Bic Tool Co., Ltd.
发明人： ARAI Koichi , ARAI Giichi , KIMURA Katsuyo
IPC分类号： B23B51/02 , B24B3/32
CPC分类号： B23B51/02 , B23B2251/04 , B23B2251/085 , B23B2251/14 , B23B2251/18 , B24B3/32
摘要： This invention relates to a drill with a tip part on which thinning is performed, comprising two cutting blades, thinning cutting blade and a thinning cutting blade, which are formed symmetrical about an axis of rotation, 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. 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, wherein a rake angle (¸ 1 ) formed by said thinning cutting blade and a rake angle (¸2) formed by said thinning cutting blade satisfy ¸1>¸2>0°, except for a part just below the chisel.

4. 发明公开

EP4338871A1 DRILL 审中-实审
公开(公告)号：EP4338871A1
公开(公告)日：2024-03-20
申请号：EP22932268.0
申请日：2022-07-27
申请人： Bic Tool Co., Ltd.
发明人： ARAI Koichi , ARAI Giichi , KIMURA Katsuyo , TESHIMA Satoshi
IPC分类号： B23B51/00 , A61B17/16
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. 发明公开

EP2684630A1 DRILL 有权
标题翻译：钻头
公开(公告)号：EP2684630A1
公开(公告)日：2014-01-15
申请号：EP12751858.7
申请日：2012-02-06
申请人： Bic Tool Co., Ltd.
发明人： ARAI Koichi , ARAI Giichi , KIMURA Katsuyo
IPC分类号： B23B51/00
CPC分类号： B23B51/02 , B23B2251/04 , B23B2251/085 , B23B2251/14 , B23B2251/18 , B24B3/32
摘要： This invention relates to a drill with a tip part on which thinning is performed, comprising two cutting blades, thinning cutting blade and a thinning cutting blade, which are formed symmetrical about an axis of rotation, 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. 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, wherein a rake angle (θ 1 ) formed by said thinning cutting blade and a rake angle (θ2) formed by said thinning cutting blade satisfy θ1>θ2>0°, except for a part just below the chisel.
摘要翻译：本发明涉及一种具有在其上进行减薄的尖端部分的钻头，包括关于旋转轴线对称形成的两个切割刀片，变薄的切割刀片和变薄的切割刀片，其能够大大降低切割阻力并且容易使用手钻，钻孔机等进行人力钻井作业的性能。所述切削刃由从所述钻头的凿尖到所述钻头的外周侧以曲线形状延伸的薄壁的切削刃（1）和从所述切削刃的端部延伸的主切削刃（2）构成，当从钻头的尖端侧观察时，将切削加工后的切削刃切削至钻头的外周端，并且由削薄的切削刃形成的变薄表面形成为当从前侧看时在钻轴方向上倾斜的近似抛物线形状其特征在于，除了所述凿子正下方的部分之外，由所述削薄刀具形成的前角（θ1）和由所述变薄刀具形成的前角（θ2）满足θ1>θ2> 0°。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式