Title:
DRILL AND DRILLING DEVICE INCLUDING THE SAME
Document Type and Number:
Japanese Patent JP2020093387
Kind Code:
A
Abstract:
To provide a drill which can drill with high accuracy without processing more than necessary during deburring, and to provide a drilling device.SOLUTION: A drill 1' includes: a drill body 3 which rotates around a center axis C; a main cutting edge 5 provided at a tip of the drill body 3; and a deburring part 8 which is provided adjacent to the main cutting edge 5 at the base end side of the drill body 3 and deburrs. The deburring part 8 has a taper surface in which a diameter becomes smaller in a direction away from the main cutting edge 5. Further, a drilling device includes the above-described drill 1'.SELECTED DRAWING: Figure 5
Inventors:
OKADA SHUICHI
Application Number:
JP2020051654A
Publication Date:
June 18, 2020
Filing Date:
March 23, 2020
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
B23B51/08
Domestic Patent References:
| JP2010247265A | 2010-11-04 |
Foreign References:
| WO2018100812A1 | 2018-06-07 |
Attorney, Agent or Firm:
Noriharu Fujita
Miori Takao
Kawakami Miki
Daisuke Nagata
Miori Takao
Kawakami Miki
Daisuke Nagata