Title:
CUTTING TOOL HOLDER AND CUTTING TOOL
Document Type and Number:
WIPO Patent Application WO/2018/221162
Kind Code:
A1
Abstract:
A cutting tool, in which a slit is provided rearward of a space between an upper jaw and a lower jaw, an insert is sandwiched between the two jaws, and the upper jaw is deformed toward the lower jaw to perform clamping by fastening of a threaded member having a head part, wherein the threaded member has a hollow shaft structure, the hollow part thereof is configured as a coolant flow path, and coolant is supplied from an upper-jaw inner flow path and a lower-jaw inner flow path provided to the jaws without the need for an elastic seal member. A vertical hole having a seat surface 65 passes through a holder 10 on the lower-jaw 30 side, and a threaded hole 80 passes through the holder 10 on the upper-jaw 20 side. An inlet 35 of a lower-jaw inner flow path 35 is provided in a large-diameter hole 60, which is the vertical hole, and an inlet 25a of a upper-jaw inner flow path 25 for coolant is provided at a vertically central position in the threaded hole 80. A threaded member 70 has provided thereto a hollow part 77 that is opened at the rear end of a head part 71 and closed at a distal end 78, a branch hole 75 that communicates with the outer peripheral surface is provided at the central position in a threaded shaft part 73, and a threaded rotation part 79 is provided to the distal end 78. A structure is adopted in which the threaded member 70 is threaded from the large-diameter hole 60 into the threaded hole 80 to perform clamping.
Inventors:
ANDOH NAOKI (JP)
Application Number:
PCT/JP2018/018304
Publication Date:
December 06, 2018
Filing Date:
May 11, 2018
Export Citation:
Assignee:
NGK SPARK PLUG CO (JP)
International Classes:
B23B27/10; B23B27/04; B23B27/16
Foreign References:
| JP2010510897A | 2010-04-08 | |||
| JP2014046452A | 2014-03-17 | |||
| JP2015009360A | 2015-01-19 | |||
| JPH07227702A | 1995-08-29 | |||
| JP2017503669A | 2017-02-02 |
Attorney, Agent or Firm:
NAKAJIMA Hiroki (JP)
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