Study on the Ultrasonic-Assisted Vibration Tapping Using Automatic Tracing Frequency System

Abstract

In the past, researchers thought that the introduction of ultrasonic-assisted vibration in tapping processes could generate smaller tapping torque than nonultrasonic-assisted vibration process. However, since the ultrasonic vibrator's temperature increases with processing time, the temperature of the workpiece may get too high. As a result, the ultrasonic vibrator may generate an unstable resonant frequency and amplitude, which can cause poor quality in the workpiece. This research used ultrasonic-assisted vibration and LabVIEW software to develop an ultrasonic-assisted vibration automatic tracing frequency system (UAVATFS). With this orthogonal array experiment, UAVATFS and the appropriate processing parameters (vibration amplitude, vibration frequency) were used to perform tapping on a titanium alloy workpiece. The effect of using this system on internal thread processing was investigated.