A method for detecting tool wear on a CNC lathe using a doppler radar detector |
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Authors: | Gregory C. Smith Samson S. Lee |
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Affiliation: | (1) Department of Industrial Education and Technology, Iowa State University, Ames, Iowa 50011, USA |
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Abstract: | Installing a non-contact in-process tool wear detection system on a computer numerical control lathe can help prevent product defects and improve product quality without impacting product cycle time. Many methods have been proposed for non-contact in-process tool wear detection. In particular, a recent international patent application describes a method for measuring the torque in a rotating axle using a high-frequency wireless transmitter/receiver and a vibrating string. The method has reportedly been used to detect cutting on a manual lathe. The authors present a new method for measuring tool wear using a high-frequency wireless transmitter/receiver alone, without a vibrating string. The high-frequency transmitter/receiver apparently responds to metal-metal contact noise rather than, or more strongly than, to signals generated by a vibrating string. The findings could help bring automated tool wear monitoring systems closer to the level of performance needed for practical use in industry. |
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Keywords: | Acoustic wave Computer numerical control (CNC) Detection Doppler radar Lathe Microwave radar Tool wear |
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