Owing to characteristics of single-step fabrication and rapid prototyping, 3D printing have potential applications in processing piezoelectric motors with complex structures. In this paper, a 3D printed resin-based bimodal piezoelectric motor is proposed. Four slots of the motor are designed to reduce the influence of large damping caused by polymer’s viscoelastic and enhance mechanical properties. Considering the viscoelasticity and internal structure of the stator, a dynamic model based on the proposed motor is developed. Furthermore, parameters of these slots are optimized using the Taguchi method. Prototypes are fabricated and experimentally investigated. The results demonstrate that the first longitudinal mode and the second bending mode are 17 765 Hz and 18 006 Hz respectively, which are consistent with the analytical model results. Under the voltage of 300 Vpp, the maximum no-load speed and maximum driving load of the slotted motor are 200 r min⁻¹ and 20 g with a speed of 6 r min⁻¹, respectively. Compared with the motor without slots, the speed and load capacity are increased by 25% and 33%. Therefore, the motor with slots exhibits better mechanical output performance.

由于单步制造和快速成型的特点，3D打印在处理具有复杂结构的压电马达中具有潜在的应用。本文提出了一种基于3D打印树脂的双峰压电电机。电机的四个槽设计为减少聚合物粘弹性引起的大阻尼的影响并增强机械性能。考虑到定子的粘弹性和内部结构，建立了基于所提出电动机的动力学模型。此外，使用田口方法优化这些槽的参数。原型被制造和实验研究。结果表明，第一纵向模式和第二弯曲模式分别为17 765 Hz和18 006 Hz，与解析模型结果一致。^-1和20 g，速度分别为6 r min ^-1。与不带槽的电动机相比，速度和负载能力分别提高了25％和33％。因此，带槽电机表现出更好的机械输出性能。