Invention Grant
- Patent Title: Spindle structure, electric motor, and machine tool formed with through hole for passage of fluid
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Application No.: US15082236Application Date: 2016-03-28
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Publication No.: US10447104B2Publication Date: 2019-10-15
- Inventor: Yohei Kamiya
- Applicant: FANUC CORPORATION
- Applicant Address: JP Yamanashi
- Assignee: FANUC CORPORATION
- Current Assignee: FANUC CORPORATION
- Current Assignee Address: JP Yamanashi
- Agency: Fredrikson & Byron, P.A.
- Priority: JP2015-104022 20150521
- Main IPC: H02K1/32
- IPC: H02K1/32 ; H02K7/14 ; H02K1/27 ; H02K9/04 ; B23Q11/10 ; H02K7/06

Abstract:
A spindle structure capable of accelerating the flow of a fluid in through holes of a rotor. The spindle structure includes a rotatable rotation part. The rotation part includes a tool holding part provided at an axial direction one end of the rotation part and through holes that penetrate the rotation part and open at the end in the axial direction. Further the spindle structure includes a vane provided in the through holes. When the rotation part rotates, the vane rotates with the rotation part to allow a fluid in the interior of the through holes to flow toward the end in the axial direction.
Public/Granted literature
- US20160344248A1 SPINDLE STRUCTURE, ELECTRIC MOTOR, AND MACHINE TOOL FORMED WITH THROUGH HOLE FOR PASSAGE OF FLUID Public/Granted day:2016-11-24
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