Title:
モータビルトイン方式のスピンドル装置
Document Type and Number:
Japanese Patent JP7070340
Kind Code:
B2
Abstract:
A spindle device (10) with a built-in motor, wherein a flinger (40) is fixed to the front end of a rotational shaft (11) to form a labyrinth seal (44) with a housing H. The housing H has an opening (71) that allows air from outside the spindle device (10) to enter a rear space (45) formed further to the rear than a rear bearing (60). Due to this configuration, it is possible to improve machining accuracy and reduce heat loss in the motor even with a relatively small spindle in which it is difficult to provide an air seal path.
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Inventors:
Shoichiro Oguri
Kyohei Matsunaga
Kyohei Matsunaga
Application Number:
JP2018205653A
Publication Date:
May 18, 2022
Filing Date:
October 31, 2018
Export Citation:
Assignee:
Nippon Seiko Co., Ltd.
International Classes:
B23B19/02; B23Q11/00; B24B41/04; B24B47/12; F16C19/16; F16C33/80; F16C35/12; H02K5/20
Domestic Patent References:
| JP2016010204A | ||||
| JP2017158240A | ||||
| JP2014046408A |
Foreign References:
| WO2013100099A1 |
Attorney, Agent or Firm:
Patent business corporation glory patent office