发明公开
- 专利标题： BOHRER
- 专利标题（英）： Drill bit
- 专利标题（中）： Bohrer的
-
申请号： EP14757904.9申请日： 2014-08-25
-
公开(公告)号： EP3038776A1公开(公告)日： 2016-07-06
- 发明人: KRENZER, Ulrich , TOPAL, Serkan
- 申请人： MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG
- 申请人地址： Obere Bahnstrasse 13 73431 Aalen DE
- 专利权人： MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG
- 当前专利权人： MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG
- 当前专利权人地址： Obere Bahnstrasse 13 73431 Aalen DE
- 代理机构： Gleiss, Alf-Olav
- 优先权： DE102013014624 20130830; DE102013226697 20131219
- 国际公布： WO2015028431 20150305
- 主分类号： B23B51/02
- IPC分类号： B23B51/02
摘要：
The invention relates to a drill bit (1) having a center axis (11), a front face, a peripheral surface, at least two main cutting lips (17, 17') provided on the front face (3), at least two brad points (19, 19') , rake faces (37, 39), assigned to the at least two main cutting lips (17, 17') and the at least two brad points (19, 19'), flutes, at least one chisel edge, a recessed portion, and swarf guide shoulders (23a, 23b) which are assigned at least to the rake faces (39) of the at least two brad points (19, 19'). The drill bit (1) is characterized in that near the recessed portion the angle (y1, y2) between the swarf guide shoulder (23a, 23b) and the centre axis (11) diminishes as distance from the front face increases.
公开/授权文献
- EP3038776B1 BOHRER 公开/授权日：2020-09-23
信息查询
