Cao Zhongchen, Miao Yiwei, Wang Ming, Zhu Zhenfeng
Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, Tianjin University, Tianjin 300072, China.
Micromachines (Basel). 2025 Apr 30;16(5):551. doi: 10.3390/mi16050551.
Multi-jet polishing (MJP) is a promising method for enhanced polishing efficiency by integrating multiple nozzles, allowing for the high-efficiency polishing of large-scale surfaces. However, the optimization of the structural parameters, such as the distribution form of the nozzles and outlet diameter, remains a critical challenge for achieving uniform and stable polishing performance. This paper presents a dynamic model of MJP based on the theory of fluid dynamic pressure and particle erosion. The flow field and particle motion characteristics in multi-nozzle jet polishing were studied using simulation experiments. The influence of the nozzle spacing and form and outlet diameter on the flow field characteristics and material removal profile was explored, and the structural parameters of the multi-nozzle polishing tool were optimized. According to the simulation results, two kinds of multi-nozzle polishing tools with a linear arrangement and cross arrangement were processed, and a series of single-point and surface polishing experiments was carried out. The optimized multi-nozzle jet polishing tool has no interference in the removal contour of each point, exhibits high consistency and stability, and is consistent with the theoretical model prediction results, which effectively improve the surface polishing efficiency. The results can provide a theoretical and experimental reference for MJP in the ultra-precision and high-efficiency polishing of large-sized components.
多喷嘴抛光（MJP）是一种通过集成多个喷嘴来提高抛光效率的有前景的方法，可实现大规模表面的高效抛光。然而，诸如喷嘴的分布形式和出口直径等结构参数的优化，仍然是实现均匀稳定抛光性能的关键挑战。本文基于流体动压和颗粒侵蚀理论提出了一种多喷嘴抛光的动力学模型。利用模拟实验研究了多喷嘴喷射抛光中的流场和颗粒运动特性。探讨了喷嘴间距、形式和出口直径对流场特性和材料去除轮廓的影响，并对多喷嘴抛光工具的结构参数进行了优化。根据模拟结果，加工了两种线性排列和交叉排列的多喷嘴抛光工具，并进行了一系列单点和表面抛光实验。优化后的多喷嘴喷射抛光工具在各点去除轮廓上无干涉，具有高度的一致性和稳定性，与理论模型预测结果一致，有效提高了表面抛光效率。研究结果可为大型零件超精密高效抛光中的多喷嘴抛光提供理论和实验参考。
