US Patent No. 9,482,093

IMPELLER, IMPELLER CUTTING JIG, AND METHOD OF MACHINING IMPELLER


Patent No. 9,482,093
Issue Date November 01, 2016
Title Impeller, Impeller Cutting Jig, And Method Of Machining Impeller
Inventorship Takashi Masakawa, Yamanashi (JP)
Assignee FANUC CORPORATION, Yamanashi (JP)

Claim of US Patent No. 9,482,093

1. A method of machining an impeller, wherein
the impeller includes:
a base member configured to have a through hole engaging with a shaft part of a jig and configured to be rotatably attachable;
a plurality of blades configured to protrude from a front surface of the base member and provided in a circumferential direction,
and

a plurality of recessed parts or a plurality of protruded parts that are formed, on a rear surface of the base member, at
positions of a rotational symmetry around the through hole and at positions other than regions in which root portions of the
blades are projected onto the rear surface of the base member, and

the method of machining the impeller includes step of:
performing a cutting work on the impeller in a state where the impeller is fixed to a cutting jig in which protruded parts
or recessed parts are formed on a seating surface to be engaged with the recessed parts or the protruded parts of the base
member.