Longitudinal Vibration Characteristics Required to Cut a Circle by Ultrasonic Vibration

概要

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Currently, lasers and water jets are used to cut circles in brittle materials such as ceramics. However, a disadvantage of these methods is that the conventional equipment is large and complex. To resolve this issue, a method using the ultrasonic vibration of a hollow-type stepped horn for cutting is developed. We consider that this equipment can be simplified and miniaturized. The shape of the hollow-type stepped horn and the characteristics of the longitudinal vibration required to obtain excellent cutting properties were examined. As a result, the most appropriate depth of the hollow part is one-quarter of the wavelength for a hollow-type stepped horn that vibrates longitudinally. The amplification factor is proportional to the cross-sectional ratio providing the cross-sectional ratio does not exceed 4.6. The characteristics of the longitudinal vibration of the hollow-type stepped horn when the static pressing force at the tip of the horn is varied were also examined. It was clarified that the ultrasonic vibration of a hollow-type stepped horn can be used to cut brittle materials.
2010-07-25