The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 27, 2021
Filed:
Jun. 20, 2019
Hitachi, Ltd., Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
A machine-tool-state determination system configured to determine a state associated with a machine tool including a rotation mechanism for processing a member, the system including: a sensor configured to acquire a state value from the machine tool; and an analysis device, in which the analysis device: performs spectral analysis with time series data of the state value, to extract a rotational frequency of the rotation mechanism and a harmonic wave to the rotational frequency; calculates a ratio of an amplitude of the rotational frequency to an amplitude of the harmonic wave; generates feature-amount data including the state value and the ratio as feature amounts; performs clustering with the feature-amount data; and determines a state associated with the machine tool, based on a result of the clustering.