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1. 发明公开

EP2918361A1 DRILL AND BORE FORMATION METHOD 有权
标题翻译： BOHRER UND BOHRUNGSFORMATIONSVERFAHREN
公开(公告)号：EP2918361A1
公开(公告)日：2015-09-16
申请号：EP13843029.3
申请日：2013-11-07
申请人： Miyagitanoi Co., Ltd. , Akita Prefecture
发明人： SAWABE, Teruo , SAITO, Koji , KATO, Masaru
IPC分类号： B23B51/08 , B23G5/20
摘要： A drill capable of efficiently performing high-quality drilling machining on a material which is hard to be cut such as CFRP and the like is provided. The drill includes a drill body 4 having a shank portion 2 at a rear side of the drill main body and a cutting portion 3 at a front side of the drill main body, a first land A to a fourth land D at the cutting portion 3, a first cutting portion groove 5a to a fourth cutting portion groove 5d provided between the lands of the first land A to the fourth land D, a pilot blade 6 formed at the tip of the cutting portion 3, a diameter-enlarging spiral thread portion 9 having a group of threads of diameter-enlarging spiral threads AK1-DK4 continuously following the pilot blade 6, a finished spiral thread portion 12 having a group of threads of finishing spiral threads AF1-DF5, which have the same height, and continuously following the diameter-enlarging spiral thread portion 9, a diameter-enlarging spiral blade portion 18 having a group of blades of the diameter-enlarging spiral threads AK1-DK4, and a finishing spiral blade portion 19 having a group of blade of the finishing spiral threads AF1-DF5. A cutting feed rate is set to an amount so that a spiral convex part will not be formed on the wall surface of a cutting hole formed in a material to be machined, and therefore the wall surface will be finished as a flat wall.
摘要翻译：提供了能够有效地对难以切割的材料（例如CFRP等）进行高质量钻孔加工的钻头。该钻头包括钻头本体4，钻头主体4在钻头主体的后侧具有柄部2，在钻头主体的前侧具有切割部分3，在切割部分3处具有第一平台A至第四平面D 设置在第一焊盘A至第四焊盘D的焊盘之间的第一切割部分槽5a至第四切割部分槽5d，形成在切割部分3的尖端处的引导刮刀6，直径扩大的螺旋螺纹部分 9具有连续跟随导向叶片6的直径增大的螺旋线AK1-DK4的一组螺纹，具有一组具有相同高度的精加工螺纹线AF1-DF5的螺纹螺纹部12，并且连续地跟随直径扩大的螺旋线部分9，具有直径扩大的螺旋线AK1-DK4的一组叶片的直径扩大的螺旋叶片部分18和具有整理螺旋形螺纹的一组叶片的整理螺旋叶片部分19 AF 1 - DF5。切削进给速度被设定为使得在形成于被加工材料的切削孔的壁面上不会形成螺旋状的凸部，因此壁面将被平坦化。

2. 发明授权

EP2918361B1 DRILL 有权
公开(公告)号：EP2918361B1
公开(公告)日：2020-03-04
申请号：EP13843029.3
申请日：2013-11-07
申请人： Miyagitanoi Co., Ltd. , Akita Prefecture
发明人： SAWABE, Teruo , SAITO, Koji , KATO, Masaru
IPC分类号： B23B51/08 , B23G5/20

3. 发明公开

EP2918361A4 DRILL AND BORE FORMATION METHOD 有权
标题翻译：钻孔及形成过程
公开(公告)号：EP2918361A4
公开(公告)日：2016-07-27
申请号：EP13843029
申请日：2013-11-07
申请人： MIYAGITANOI CO LTD , AKITA PREFECTURE
发明人： SAWABE TERUO , SAITO KOJI , KATO MASARU
IPC分类号： B23B51/08 , B23G5/20
CPC分类号： B23B51/0018 , B23B51/00 , B23B51/02 , B23B51/06 , B23B2226/275 , B23B2250/12 , B23B2251/248 , Y10T408/03 , Y10T408/44 , Y10T408/90473 , Y10T408/909
摘要： A drill capable of efficiently performing high-quality drilling machining on a material which is hard to be cut such as CFRP and the like is provided. The drill includes a drill body 4 having a shank portion 2 at a rear side of the drill main body and a cutting portion 3 at a front side of the drill main body, a first land A to a fourth land D at the cutting portion 3, a first cutting portion groove 5a to a fourth cutting portion groove 5d provided between the lands of the first land A to the fourth land D, a pilot blade 6 formed at the tip of the cutting portion 3, a diameter-enlarging spiral thread portion 9 having a group of threads of diameter-enlarging spiral threads AK1-DK4 continuously following the pilot blade 6, a finished spiral thread portion 12 having a group of threads of finishing spiral threads AF1-DF5, which have the same height, and continuously following the diameter-enlarging spiral thread portion 9, a diameter-enlarging spiral blade portion 18 having a group of blades of the diameter-enlarging spiral threads AK1-DK4, and a finishing spiral blade portion 19 having a group of blade of the finishing spiral threads AF1-DF5. A cutting feed rate is set to an amount so that a spiral convex part will not be formed on the wall surface of a cutting hole formed in a material to be machined, and therefore the wall surface will be finished as a flat wall.

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