发明公开
- 专利标题： BOHRER, VERFAHREN ZUR HERSTELLUNG EINES BOHRERS, VERFAHREN ZUM EINBRINGEN EINER DURCHGANGSBOHRUNG IN EIN WERKSTÜCK, UND VERWENDUNG EINES BOHRERS
- 专利标题（英）： Drill, method for producing a drill, method for making a through-hole in a workpiece, and use of a drill
- 专利标题（中）： 钻头，用于生产钻头，方法引入，通孔的一部分，并使用钻
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申请号： EP14724442.0申请日： 2014-05-15
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公开(公告)号： EP3003618A1公开(公告)日： 2016-04-13
- 发明人: KRESS, Dieter
- 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： DE102013210112 20130529
- 国际公布： WO2014191216 20141204
- 主分类号： B23B47/34
- IPC分类号： B23B47/34 ; B23B51/00
摘要：
The invention relates to a drill (1) particularly for working lightweight metals and composite materials, having a central axis (M) and an end face (3). The drill (1) comprises a first section (5) which – seen along the central axis (M) from the end face (3) – is arranged before a second section (7). Said first section (5) comprises a first main cutting edge (9, 9') and a first external diameter (D
1 ), said second section (7) comprising a second main cutting edge (11) and a second external diameter (D
2 ). Said first external diameter (D
1 ) is smaller than said second external diameter (D
2 ). According to the invention, the first external diameter (D
1 ) is at least 0.9*x to a maximum of 1.1*x, where x = D
2 – exp(D
2 /15) – 0.5.
1 ), said second section (7) comprising a second main cutting edge (11) and a second external diameter (D
2 ). Said first external diameter (D
1 ) is smaller than said second external diameter (D
2 ). According to the invention, the first external diameter (D
1 ) is at least 0.9*x to a maximum of 1.1*x, where x = D
2 – exp(D
2 /15) – 0.5.
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