Title:
ドリルの製造方法
Document Type and Number:
Japanese Patent JP7263872
Kind Code:
B2
Abstract:
A method of producing a drill has a step of preparing a workpiece to be processed to produce a drill, and a step of forming a ground groove. The workpiece has a cutting blade, a chip discharge flute helically extending, and a rake surface which have been formed therein. The drill is rotated around a drill axial center. The formation step rotates a rotary whetstone around its whetstone axial center, and grinds the rake surface to form the ground groove along the chip discharge flute. The formation step uses the rotary whetstone so that the whetstone axial center intersects a longitudinal direction of the chip discharge flute. The rotary whetstone has a rotating body shape projecting in a radial outward direction of the rotary whetstone axial center and around the rotary whetstone axial center.
Inventors:
Akihiro Ueda
Naoki Kakutani
Shota Inaba
Naoki Kakutani
Shota Inaba
Application Number:
JP2019056939A
Publication Date:
April 25, 2023
Filing Date:
March 25, 2019
Export Citation:
Assignee:
株式会社デンソー
International Classes:
B24B19/04; B23B51/00; B23P15/32
Domestic Patent References:
| JP49111293A | ||||
| JP63110364U | ||||
| JP2008272856A | ||||
| JP6091510A |
Attorney, Agent or Firm:
Patent Attorney Corporation Yuai Patent Office