US Patent No. 9,252,639

METHOD OF MANUFACTURING INDEX DEVICE OF MACHINE TOOL


Patent No. 9,252,639
Issue Date February 02, 2016 
Title Method Of Manufacturing Index Device Of Machine Tool
Inventorship Masahiro Murota, Yamanashi (JP)
Assignee FANUC CORPORATION, Yamanashi (JP)

Claim of US Patent No. 9,252,639

1. A method of manufacturing an index device of a machine tool, the method comprising:
providing a jig having an outer periphery of the same outer diameter as an outer diameter of a motor for driving the index
device;

prior to setting the motor into a casing configured to house the motor, inserting the jig into the casing;
filling, through an opening provided in the casing, a material with higher thermal conductivity than the air into a gap space
created between the casing and the outer periphery of the jig;

removing the jig from the casing when the material filled in the gap space becomes solidified; and
setting the motor into the casing after said removing the jig from the casing.