Title:
SPINDLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/133050
Kind Code:
A1
Abstract:
A cooling gas is fed from an ejection nozzle into the interior of a through-hole which is formed in a radially central portion of a main spindle, and which penetrates through said main spindle in an axial direction. The cooling gas passes through radial venting holes provided in a plurality of locations, in the circumferential direction, in an axially intermediate portion of the main spindle, is fed into axial venting holes provided in a plurality of locations, in the circumferential direction, extending from one axial-direction end of the main spindle to an intermediate portion thereof, is caused to flow through the axial venting holes, and is discharged from discharge holes.
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Inventors:
SUZUKI HIDEKAZU (JP)
ISHIKAWA ATSUSHI (JP)
ISHIKAWA ATSUSHI (JP)
Application Number:
PCT/JP2016/054312
Publication Date:
August 25, 2016
Filing Date:
February 15, 2016
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
B23Q11/12; B23B19/02
Foreign References:
| JPS6377636A | 1988-04-07 | |||
| JPH03213243A | 1991-09-18 | |||
| JP2000015541A | 2000-01-18 | |||
| DE202009009424U1 | 2010-11-18 | |||
| US3555962A | 1971-01-19 |
Other References:
See also references of EP 3260235A4
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P. C. (JP)
Patent business corporation glory patent firm (JP)
Patent business corporation glory patent firm (JP)
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