| 发明名称 | Drilling tool for machine tools and method for the production thereof | ||
| 摘要 | A drilling tool for machine tools has a drill body, a cutting head arranged on the front face of the drill body and a shaft arranged at the end thereof, wherein the drill body has two chip flutes, which are delimited at their flanks by ribs and a first chip flute of which is spirally curved. A second chip flute is not spiraled or is spirally curved with a pitch differing from the first chip flute, preferably running in the same direction of rotation. | ||
| 申请公布号 | US8944727(B2) | 申请公布日期 | 2015.02.03 |
| 申请号 | US200812733300 | 申请日期 | 2008.07.29 |
| 申请人 | Komet Group GmbH | 发明人 | Nitzsche Hendrik;Stolz Gerhard;Haidinger Hans;Spors Benno |
| 分类号 | B23B51/06;B23P15/32;B23B51/04;B23P15/28 | 主分类号 | B23B51/06 |
| 代理机构 | Flynn, Thiel, Boutell & Tanis, P.C. | 代理人 | Flynn, Thiel, Boutell & Tanis, P.C. |
| 主权项 | 1. A drilling tool for machine tools having a drill body, a cutting head which is arranged thereon at an end, and a shank which is arranged thereon at an opposite end, wherein the drill body has two chip flutes, which are bounded on their flanks by ribs, of which a first chip flute is curved in a helical shape, and a second chip flute is curved in a helical shape with a pitch which differs from that of the first chip flute, wherein a first coolant channel is provided in a rib of the drill body, extends from the shank end to the cutting-head end of the drill body, and has an outlet opening at the cutting-head end, characterized in that a further coolant channel is formed in a further rib, extends from the shank end to the cutting-head end of the drill body and has an outlet opening at the cutting-head end, the first coolant channel is curved in a helical shape and the further coolant channel is curved in a helical shape with a different pitch from the first coolant channel. | ||
| 地址 | Besigheim DE | ||