US 12,332,626 B2
Accuracy analysis system for machine tool
Reiji Kanbe, Niwa-Gun (JP)
Assigned to Okuma Corporation, Niwa-Gun (JP)
Filed by OKUMA CORPORATION, Niwa-Gun (JP)
Filed on Aug. 24, 2022, as Appl. No. 17/821,873.
Claims priority of application No. 2021-144183 (JP), filed on Sep. 3, 2021.
Prior Publication US 2023/0076585 A1, Mar. 9, 2023
Int. Cl. G05B 19/404 (2006.01); B23Q 17/22 (2006.01)
CPC G05B 19/404 (2013.01) [B23Q 17/22 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An accuracy analysis system for a machine tool, comprising:
the machine tool that has a control unit and a data communication unit, the control unit stores preliminarily obtained accuracy data regarding a machine accuracy of the machine tool, compensation data for compensating for an error based on the preliminarily obtained accuracy data, and machine information as information regarding the machine tool; the data communication unit transmits the preliminarily obtained accuracy data, the compensation data, and the machine information in the control unit to a data server;
the data server stores the preliminarily obtained accuracy data, the compensation data, and the machine information of a plurality of machine tools;
a data analyzer that uses the preliminarily obtained accuracy data and the compensation data in the data server to obtain a compensation data correction value as a correction value of the compensation data and expected accuracy data when the compensation data correction value is applied;
a corrected machine accuracy calculation unit that calculates a post-correction machine accuracy from the expected accuracy data; and
a data display unit that displays the post-correction machine accuracy calculated by the corrected machine accuracy calculation unit, wherein
the data analyzer includes a machine information comparator that compares the machine information of the plurality of machine tools in the data server with one another, and
when obtaining the compensation data correction value and the expected accuracy data of a predetermined one of the machine tools, the machine information comparator obtains the compensation data correction value and the expected accuracy data of the predetermined one of the machine tools by using the compensation data and the preliminarily obtained accuracy data of another one of the machine tools having the machine information determined to be correlated to the machine information of the predetermined one of the machine tools,
the accuracy analysis system for a machine tool, further comprising
a machine accuracy calculation unit that calculates the machine accuracy of the machine tool from the preliminarily obtained accuracy data of the control unit, wherein
the data communication unit further includes:
a second data display unit that displays the machine accuracy calculated by the machine accuracy calculation unit; and
a communication execution selection unit that selects whether to perform a transmission to the data server; and
wherein a user of the predetermined one of the machine tools requests the control unit to apply the compensation data correction value when a comparison between the machine accuracy before-correction and the post-correction machine accuracy is acceptable, and requests adjustment work of the machine accuracy of the predetermined one of the machine tools when the comparison is not acceptable.