基本信息:
- 专利标题： DRILL BIT AND HOLE FORMATION METHOD
- 申请号：EP17813087.8 申请日：2017-05-19
- 公开(公告)号：EP3470155A1 公开(公告)日：2019-04-17
- 发明人： MATSUYAMA, Yousuke , OGASHIWA, Takaaki , UMEHARA, Noritsugu , OYAMA, Shintarou
- 申请人： Mitsubishi Gas Chemical Company, Inc.
- 申请人地址： 5-2, Marunouchi 2-chome Chiyoda-ku Tokyo 100-8324 JP
- 专利权人： Mitsubishi Gas Chemical Company, Inc.
- 当前专利权人： Mitsubishi Gas Chemical Company, Inc.
- 当前专利权人地址： 5-2, Marunouchi 2-chome Chiyoda-ku Tokyo 100-8324 JP
- 代理机构： Hoffmann Eitle
- 优先权： JP2016117239 20160613
- 国际公布： WO2017217184 20171221
- 主分类号： B23B51/00
- IPC分类号： B23B51/00 ; B23B35/00 ; B23B47/00
摘要：
Provided are a hole formation method enabling the formation of a high-quality hole even when a workpiece material is a difficult-to-machining metal material or a fiber-reinforced composite material and a drill bit used in the method. A drill bit 1 includes at least one cutting edge 10 and a face (a leading flank 20 and a trailing flank 30) positioned in the vicinity of the cutting edge 10, and on the face, a recess exhibiting a prescribed planar shape (groove 40) is provided. A hole formation method includes a hole formation step of machining a portion to be processed of a workpiece material W by means of drilling to form a hole while a lubricant material for assisting machining process 2 is in contact with the portion to be processed, and in the hole formation step, the drill bit 1 is used.
公开/授权文献:
- EP3470155B1 DRILL BIT AND HOLE FORMATION METHOD 公开/授权日：2020-02-26