SPINDLE STRUCTURE INCLUDING THROUGH HOLE FOR FLOWING FLUID, ELECTRIC MOTOR, AND MACHINE TOOL

Title:

SPINDLE STRUCTURE INCLUDING THROUGH HOLE FOR FLOWING FLUID, ELECTRIC MOTOR, AND MACHINE TOOL

Document Type and Number:

Japanese Patent JP2016215329

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a technology that facilitates fluid flow in a through hole in a rotor.SOLUTION: A spindle structure 10 includes a rotatable rotary part 72. The rotary part 72 has: a tool holding part 54a provided at one axial end of the rotary part 72; and through holes 28 and 58 penetrating through the rotary part 72 and opening at the one axial end. The spindle structure 10 includes blades provided in the through holes 28, 58. The blades rotate with the rotary part 72 to flow a fluid existing in the through holes 28, 58 to the one axial end when the rotary part 72 rotates.SELECTED DRAWING: Figure 1

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Inventors:

KAMIYA YOHEI

Application Number:

JP2015104022A

Publication Date:

December 22, 2016

Filing Date:

May 21, 2015

Export Citation:

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Assignee:

FANUC LTD

International Classes:

B23Q11/10; B23B19/02; B23Q11/12; H02K1/32; H02K5/20; H02K9/06; H02K9/12

Domestic Patent References:

JPH0457650A	1992-02-25
JPH09103932A	1997-04-22
JP2014117119A	2014-06-26
JP2003254294A	2003-09-10
JPH0382356A	1991-04-08
JP2015192474A	2015-11-02

Attorney, Agent or Firm:

Atsushi Aoki
Tetsuro Shimada
Shinji Mitsuhashi
Hirose Shigeki
Kazuo Maejima
Masahiro Tahara

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