发明申请
- 专利标题: DRILL BIT
- 专利标题(中): 钻头
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申请号: US14915314申请日: 2014-08-25
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公开(公告)号: US20160214184A1公开(公告)日: 2016-07-28
- 发明人: Ulrich KRENZER , Serkan TOPAL
- 申请人: MAPAL FABRIK FÜR PRÄZISIONSWERKZEUGE DR. KRESS KG
- 申请人地址: DE Aalen
- 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: DE Aalen
- 优先权: DE102013014624.0 20130830; DE102013226697.9 20131219
- 国际申请: PCT/EP2014/068005 WO 20140825
- 主分类号: B23B51/02
- IPC分类号: B23B51/02
摘要:
A drill has a central axis, a front side, a circumferential surface, at least two main edges on the front side, which reach up to the circumferential surface and merge there with secondary edges, at least two central edges extending from the end of the main edge facing away from the circumferential surface, cutting surfaces associated with the main edges and central edges, chip flutes associated with the main edges and central edges and introduced into the circumferential surface, at least one cross edge adjoined by the ends of the central edges facing away from the main edges which passes through the central axis, a point thinning and chip run-up shoulders associated with at least the cutting surfaces of the central edges. An angle γ of the chip run-up shoulder decreases in the region of the point thinning towards the central axis as the distance from the front side increases.
公开/授权文献
- US09862036B2 Drill bit 公开/授权日:2018-01-09
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