Werkzeugmaschinen-Überwachungseinrichtung zum Erkennen von Schneidwerkzeugbrüchen
摘要
<p>Vibrations generated by interaction of a cutting tool and workpiece are sensed and a high frequency vibration signal with a frequency in a range between 30KHz and 100KHz is derived. At least one parameter related to force acting on the tool during a cutting process is sensed and a low frequency signal with a frequency less than about 1 KHz is produced. Each of the signals is preprocessed, sampled and digitised. The first and second tracking means signals are computed from a given number of previous samples. A pattern recognition device detects signal transients that may be caused by a tool break. An alarm determines that transients in the first and second mean signals are inclose time coincidence and occur in a designated time window, and generates a minor tool break alarm.</p>
申请公布号
DE4008697(C2)
申请公布日期
1996.06.05
申请号
DE19904008697
申请日期
1990.03.17
申请人
GENERAL ELECTRIC CO., SCHENECTADY, N.Y., US
发明人
THOMAS, CHARLES EDMUNG, SCOTIA, N.Y., US;HAYASHI, STEVEN ROBERT, SCHENECTADY, N.Y., US;WILDES, DOUGLAS GLENN, BALLSTON LAKE, N.Y., US