One of the most important and promising industrial applications of ultrasonics is the process generally known as ultrasonic cutting or ultrasonic dimensional machining. Ultrasonic cutting was discovered about twenty years ago by the American engineer, Lewis Balamuth . He found in an investigation of the ultrasonic grinding of abrasive powders that when the vibrating tip of the emitting transducer was brought close to the surface of the vessel containing the abrasive suspension the surface disintegrated at the place of contact. It was found that all brittle materials — glass, ceramic, hard alloys, sapphire, ruby, and even diamond — would be abraded in this way. The striking feature of the effect was the fact that the shape of the resulting cavity very precisely emulated the contour of the emitter tip. The technique was rapidly exploited in industry, and during 1953–1955 several countries had begun the manufacture of industrial prototypes of ultrasonic machine tools.
KeywordsMachine Tool Brittle Material Hard Alloy Ultrasonic Machine Machine Technique
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