Title:
STATE MONITORING DEVICE AND STATE MONITORING METHOD FOR BALL SCREW
Document Type and Number:
WIPO Patent Application WO/2022/219712
Kind Code:
A1
Abstract:
Disclosed are a state monitoring device and a state monitoring method for a ball screw, which enable appropriately collecting data for accurately diagnosing the state of a ball screw. A state monitoring device (20) monitors the state of a ball screw (10) having a screw shaft (1), a nut (2), and a plurality of balls (3). The state monitoring device (20) comprises: a drive control unit (22) for controlling a drive unit (servo motor (11)) to make the screw shaft (1) and the nut (2) move relative to each other at a constant speed by one reciprocation or more under a no-load state; and a data collection unit (23) for collecting, as data, physical amounts relating to the ball screw (10) during a period in which the drive unit is controlled by the drive control unit (22).
Inventors:
MATSUMURA KEISUKE (JP)
HASHIMOTO SATOSHI (JP)
YAMADA YUKI (JP)
HASHIMOTO SATOSHI (JP)
YAMADA YUKI (JP)
Application Number:
PCT/JP2021/015296
Publication Date:
October 20, 2022
Filing Date:
April 13, 2021
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
G01M13/028
Foreign References:
| JP2018205213A | 2018-12-27 | |||
| JP2013164386A | 2013-08-22 | |||
| JP2016109483A | 2016-06-20 | |||
| JP2019148311A | 2019-09-05 | |||
| JP6403743B2 | 2018-10-10 | |||
| JP2012098213A | 2012-05-24 |
Attorney, Agent or Firm:
KONISHI, Kay et al. (JP)
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