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Title:
BORING CUTTING TOOL, BORING MACHINE AND BORING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/070630
Kind Code:
A1
Abstract:
A boring cutting tool (40) that is attached to a machine, for cutting a hole (13) of a large-diameter side of a stepped hole of a workpiece (10). Two boring cutting tools (40) form a set. Each of the set of two boring cutting tools (40a, 40b) comprises: a shaft part (41); a cutting edge (42) projecting laterally from the shaft part (41); and an abutting surface (43) for abutting tips of the shaft parts (41) against each other. The two boring cutting tools (40a, 40b) perform cutting while integrally rotating around the center line of the shaft parts (41) in a coupled state in which the tips of the boring cutting tools (40a, 40b) are abutted against each other.

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JPH0538605BORING BAR
Inventors:
MANDAI HARUO (JP)
Application Number:
PCT/JP2020/036202
Publication Date:
April 15, 2021
Filing Date:
September 25, 2020
Export Citation:
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Assignee:
HARU TECHNIQUE LABORATORY INC (JP)
International Classes:
B23B29/02; B23B35/00; B23B39/22; B23B41/00
Foreign References:
JP2004268245A2004-09-30
JP2009066672A2009-04-02
JP2014195851A2014-10-16
JPS61188008A1986-08-21
Attorney, Agent or Firm:
MORI & ASSOCIATES (JP)
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