American Machinist

Diagnostic tool for machines. (Technology Trends).

A new process-quality monitor lets shops run constant diagnostics during cutting, milling, drilling, and boring operations without interrupting production flow. According to the manufacturer, The Modal Shop Inc., Cincinnati, the ePIG (cutting energy process integrity gage) device makes the monitoring of "machinery health" simple, non-intrusive, and cost-effective.

The ePIG uses statistical vibration analysis to alert machine operators of changes in a single-spindle machine's operating condition. Using a simple, non-intrusive vibration sensor, the ePIG "black box" analyzes both the cutting energy during a machining cycle and the ambient rotating energy while the machine idles. The unit sounds a process-alarm signal when it finds unusual conditions--typically caused by problems like broken inserts, missing operations, or hardened parts. …

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