Title:
ROTARY TABLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/047733
Kind Code:
A1
Abstract:
A rotary table device according to the present disclosure comprises: a base part; a bearing; a table which is supported using the bearing so as to be able to rotate with respect to the base part; and a motor which rotates the table in the rotation direction of the bearing. The motor includes a coil row in which a plurality of three-phase coreless coils that are flat and annularly wound are arranged side by side and which is fixed to the base part, and a magnet row which is disposed so as to face the coil row, in which a plurality of plate-shaped magnets are arranged side by side in the circumferential direction of the table such that the opposite magnetic poles are alternated, and which is fixed to the table. A scale is printed along the entire outer circumferential surface of the table. A sensor for reading the scale is provided on the base part.
Inventors:
TAKASHIMA DAISUKE (JP)
SAKAI TETSUYA (JP)
SAKAI TETSUYA (JP)
Application Number:
PCT/JP2022/025099
Publication Date:
March 30, 2023
Filing Date:
June 23, 2022
Export Citation:
Assignee:
NIPPON THOMPSON CO LTD (JP)
International Classes:
H02K11/22; F16C19/36; F16C33/58; H02K21/24; H02K41/03
Foreign References:
| JP2020120430A | 2020-08-06 | |||
| CN102364135A | 2012-02-29 | |||
| JP2004072960A | 2004-03-04 |
Attorney, Agent or Firm:
KITANO Shuhei et al. (JP)
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