Study on Regeneration of Ultrasonic Horn for Gemstone Carving
1 year ago
Authors:
Phạm Quốc Phong,Nguyễn Vũ Lực,Trần Văn Điền
Publication date:
18 / 05 / 2022
Name of Publishers:
Lecture Notes in Mechanical Engineering
Abstract:
Ultrasonic machining is an advanced machining technology, widely used for machining hard and brittle materials. During the ultrasonic carving machining, gemstone shape formed through a negative mold under vibration combining with hard abrasives. Under the impact and bombardment of abrasive particles, the small-end surfaces of the ultrasonic horn are abraded and damaged, it needs to be generated. This paper aims to describe the process of investigating the horn length ratio for predicting the vibration frequency through both simulation and experiments. In simulations, the relationship between the length ratio and frequency of the horn has been described. The length ratio for maintenance of the frequency and amplitude has been determined. Experiments have been carried out to determine the length limit for which the horn can work. Research results show that partial removal of the damaged horn can be feasible, but it is necessary to remain the length ratio in range. The shorter the horns, the higher the required frequency and the higher the heat emission. This result can be applied to regenerate ultrasonic horn used in gemstone carving and furthermore can be extended to optimal design for ultrasonic machining process.