射流抛光工具的设计是水射流抛光工艺中重要的环节。本文通过研究不同工具腔室对射流流速和射流动压力的影响, 确定了最优的抛光工具类型, 并相应给出了最优设计方法。通过建立射流抛光离散相模型和冲蚀模型仿真和实验, 研究了不同孔径下抛光的去除率和去除函数形状。研究表明：在进行流体工具结构设计时, 应该尽量使腔室的直径大、长度短, 同时要保证流体运动的方向与喷嘴出射的方向相一致, 可以提升流束的质量。随着喷嘴孔径的减小, 去除率升高, M形去除函数中心低去除区域占比降低, 在实验条件下, 当孔径低于0. 25mm时, 可以得到高斯型去除函数。本文对实际射流抛光工具结构设计提供了参考价值。 

The design of fluid jet polishing (FJP) tool is an important part of the FJP process. By studying effects of different tool chambers on flow-beam velocity and pressure, the paper determines the optimal type of polishing tool and provides the optimal design method. It studies those removal rates and shapes of removal function under different apertures by establishing FJP discrete phase model and flushing erosion model for simulation and experiment. The results show that in structure, the chamber shall be designed to be larger in diameter and shorter in length, and ensure the fluid movement direction is consistent with the nozzle discharge direction, so as to improve the quality of the flow beam. As the decrease of nozzle aperture, the removal rate increases and the proportion of low removal area in the center of M-shaped removal function decreases. Under experimental conditions, the Gaussian removal function can be obtained when the aperture is smaller than 0. 25mm. This paper provides a reference for the real design of jet polishing tool structure.