US Patent No. 10,607,868

MANUFACTURING CELL AND MANUFACTURING CELL MANAGEMENT SYSTEM


Patent No. 10,607,868
Issue Date March 31, 2020
Title Manufacturing Cell And Manufacturing Cell Management System
Inventorship Wataru Shiraishi, Yamanashi (JP)
Assignee FANUC CORPORATION, Yamanashi (JP)

Claim of US Patent No. 10,607,868

1. A manufacturing cell communicable with another manufacturing cell or a management computer, the manufacturing cell comprising:a device configured to physically process a workpiece;
a memory; and
a processor configured to
set an allowable range for at least one of (1) physical quantity data related to the manufacturing cell and (2) statistical processing data obtained by statistically processing the physical quantity data, the statistical processing data being stored in the memory,
output to said another manufacturing cell or the management computer, output information including at least one of (a) a notification of occurrence of abnormality, (b) the physical quantity data, and (c) the statistical processing data, in a case where the physical quantity data or the statistical processing data deviate from the allowable range,
when an abnormality occurred in said another manufacturing cell, receive physical quantity data or statistical processing data of said another manufacturing cell contained in output information sent from said another manufacturing cell,
compare the received physical quantity data or statistical processing data of said another manufacturing cell with the physical quantity data or the statistical processing data of the manufacturing cell, to determine a correlation coefficient,
automatically make a determination, around a timing when the abnormality occurred in said another manufacturing cell, whether or not the abnormality is inherent to the another manufacturing cell in which the abnormality occurred, by comparing the correlation coefficient with a predetermined range, and
in response to the correlation coefficient falling outside the predetermined range which indicates a possibility of occurrence of an abnormality in the manufacturing cell similar to the abnormality that occurred in said another manufacturing cell,
stop operation of the manufacturing cell.