发明名称 |
ACOUSTIC TOOL TOUCH DETECTOR WITH MINIMIZED DETECTION DELAY |
摘要 |
<p>A Machine Tool Monitor detects the sudden increase in vibration signal level when a slowly advancing cutting tool first touches the workpiece. The delay to a tool touch decision is reduced while still avoiding false alarms on high amplitude single-peaked and multi-peaked noise spikes. Samples of the preprocessed analog vibration signal that are above a low threshold level are analyzed by digital tool touch detection logic. The signal slope polarity is determined by comparison of a new sample to the tracking mean, or by sample-to-sample amplitude comparisons, and presented to an up/down counter. A tool touch alarm is generated when the positive slope counts exceed the negative slope counts by a preset number slightly greater than occur in a time period from the start of a noise spike until its peak amplitude is passed.</p> |
申请公布号 |
GB2177205(B) |
申请公布日期 |
1989.02.01 |
申请号 |
GB19860014203 |
申请日期 |
1986.06.11 |
申请人 |
* GENERAL ELECTRIC COMPANY |
发明人 |
CHARLES EDMUND * THOMAS |
分类号 |
B23Q17/22;B23Q17/12;G05B19/4065;(IPC1-7):B23Q17/12;G06F15/46 |
主分类号 |
B23Q17/22 |
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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