System and method for predicting failure in machine tool

Details System and method for predicting failure in machine tool System and method for predicting failure in machine tool

1992-03-05

1995-05-09

Trammell, James P.

Boots, shoes, and leggings

36447422, 36447419, 364153, G06F 1546, G05B 1302

Patent

active

054146321

ABSTRACT:
In system and method for predicting an occurrence of failure in a machine tool, at least one monitor data (for example, position deviation variable of a tool with respect to a target position of the tool as a result of rotation of a servomotor) which is changed according to an operating situation in a series of working processes in the machine tool is detected, a prediction level of failure against the monitor data is set, the prediction level being set according to the operating situation, a comparison period of time is set according to the series of the working processes, the monitor data detected is compared with the prediction level set during a predetermined one of the series of working processes of the machine tool set as the comparison period of time, a failure prediction signal is output when the value of the monitor data exceeds the prediction level, and the prediction of the occurrence of failure is informed through a CRT on the basis of the received failure prediction signal.

REFERENCES:
patent: 4542471 (1985-09-01), Inaba et al.
patent: 4551808 (1985-11-01), Smith et al.
patent: 4713770 (1987-12-01), Hayes et al.
patent: 4918616 (1990-04-01), Yoshimura et al.
patent: 5115403 (1992-05-01), Yoneda et al.
patent: 5221884 (1993-06-01), Teshima

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