Title:
BORING TOOL
Document Type and Number:
Japanese Patent JP2020040209
Kind Code:
A
Abstract:
To make it possible to bore plural holes altogether.SOLUTION: A boring tool for use in a portable boring device is provided with: plural drill blades 8 which can be rotationally driven around parallel different drill axes Xd; a support unit part 9 which supports a base end part of each drill blade 8; a contact part 10 which contacts a boring object part prior to the drill blade 8; and a positioning projection part 11 which is pressed against the boring object part, and determines a setting position of a boring tool body. A line-of-sight opening 12, which opens in an outer peripheral part and through which a contact tip 11d of the positioning projection part 11 can be seen from an outer peripheral side, is provided between the support unit part 9 and the contact part 10.SELECTED DRAWING: Figure 5
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Inventors:
NOMOTO HIROMASA
SHOJI HIROYUKI
SHOJI HIROYUKI
Application Number:
JP2019227667A
Publication Date:
March 19, 2020
Filing Date:
December 17, 2019
Export Citation:
Assignee:
YAMADE KK
International Classes:
B23B45/00; B23B39/16; B26F1/16
Attorney, Agent or Firm:
Patent business corporation r&c