MACHINING TOOL - HONDA MOTOR CO LTD

Title:

MACHINING TOOL

Document Type and Number:

WIPO Patent Application WO/2020/017644

Kind Code:

A1

Abstract:

A machining tool (10) forms a first relief surface (14), a valve seat surface (16), and a second relief surface (18) by cutting the inner periphery of a valve seat blank (12) having an opening (12a). The machining tool (10) is provided with: a tool body (40) rotationally driven about an axis (a); a plurality of cutting tools (42, 44, 46) rotating with the tool body (40); a cartridge (48) mounted to the tool body (40) so as to be capable of moving forward and backward along the axis (a); and a cam (50) in contact with the base end surface (70d) of the cartridge (48) and moving the cartridge (48) forward and backward. At least one of the plurality of cutting tools (42, 44, 46) is mounted to the cartridge (48).

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Inventors:

OKA HIDEKI (JP)
HATAYAMA TADATOMO (JP)
KOIDE MASAYA (JP)

Application Number:

PCT/JP2019/028504

Publication Date:

January 23, 2020

Filing Date:

July 19, 2019

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