| 发明名称 |
DRILL AND METHOD OF MANUFACTURING DRILL |
| 摘要 |
According to one implementation, a drill has at least one cutting edge. A projected shape of a passing area of a ridgeline of the at least one cutting edge when the at least one cutting edge is rotated around a tool axis becomes a line-symmetric and discontinuous line along a parabola, two parabolas, an ellipse or two ellipses. The projected shape is drawn on a projection plane parallel to the tool axis. |
| 申请公布号 |
US2015336182(A1) |
申请公布日期 |
2015.11.26 |
| 申请号 |
US201514713432 |
申请日期 |
2015.05.15 |
| 申请人 |
FUJI JUKOGYO KABUSHIKI KAISHA |
发明人 |
SAITO Manabu;NAKAHATA Tatsuo;TAKAHASHI Hideharu;WATANABE Masao;NISHINO Toshio |
| 分类号 |
B23B51/00;B23P15/28 |
主分类号 |
B23B51/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A drill having at least one cutting edge,
wherein a projected shape of a passing area of a ridgeline of said at least one cutting edge when said at least one cutting edge is rotated around a tool axis becomes a line-symmetric and discontinuous line along a parabola, two parabolas, an ellipse or two ellipses, the projected shape being drawn on a projection plane parallel to the tool axis. |
| 地址 |
Tokyo JP |
