Design of Hollow Horn Based on Four-terminal Network Method

When designing the horn of ultrasonic transducer for rotary machining, traditional analytical method cannot consider complex assembly cross-section horn, resulting in a large final simulation error and design error. At same time, when diameter is too large, size back mass obtained by thin. This paper combines four terminal network finite element method, selects sandwich piezoelectric transducer, takes ER spring chuck commonly used machining as an example, derives transmission matrix corresponding to geometric shape, then uses four-terminal two sets stepped transducers with frequency 22 kHz analysis comparison. Finally, through analysis, it verified that designed has performance closer theoretical design.