Sensor-based measurement of tool forces and machining process model parameters
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United States of America Patent
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May 19, 2009
Grant Date -
Jan 18, 2007
app pub date -
Jul 12, 2006
filing date -
Jul 12, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system and method are provided for real-time measurement of tool forces. A relationship between a sensor characteristic and tool forces is determined by directly measuring tool forces for a standard tool, work piece, and part program. The sensor characteristic for a CNC machine at the user facility is then measured for the standard tool, work piece, and part program, providing a relationship between the sensor characteristic at the user facility and tool forces. If the sensor is not conveniently attached to the work piece or the part program is not sufficiently robust in cutting conditions, the work piece and part program are replaced by a sacrificial work piece and sacrificial part program. The sacrificial work piece and sacrificial part program are selected to accommodate the sensors and to provide sufficient robustness in cutting conditions to accurately determine the process model parameters for the sacrificial work piece.
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