发明名称 |
ACOUSTIC MONITORING OF CUTTING CONDITIONS TO DETECT TOOL BREAK EVENTS |
摘要 |
<p>This tool break detection system relies on monitoring changes in the cutting noise itself, rather than detecting the tool fracture acoustic signal. A broken tool capable of damaging the workpiece is detected, and tool break events that do not affect cutting conditions are ignored. The signal from a sensor such as an accelerometer is preprocessed to attenuate low frequency machinery noise and detect the signal energy in a band below 100 KHz, then sampled, and the digitized signal samples analyzed by pattern recognition logic. Runout false alarms during rough surface cutting are prevented; after detection of an abrupt increase or decrease in signal level, the confirmation period to test for a persistent shift in mean level is set longer than the workpiece revolution period.</p> |
申请公布号 |
GB2166242(B) |
申请公布日期 |
1988.10.26 |
申请号 |
GB19850026094 |
申请日期 |
1985.10.22 |
申请人 |
* GENERAL ELECTRIC COMPANY |
发明人 |
CHARLES EDMUND * THOMAS;MINYOUNG * LEE;JAMES FREDERICK * BEDARD;STEVEN ROBERT * HAYASHI |
分类号 |
B23Q17/09;B23B47/24;G05B19/4065;(IPC1-7):B23Q17/12;B23Q15/00 |
主分类号 |
B23Q17/09 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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