针对微滴沉积制造中金属射流断裂随机性变化、射流长度等参数难以控制和预测的现存问题,采用试验研究与理论分析相结合的方法,对金属射流断裂过程中的射流形态、射流长度及其影响因素氧浓度、激振频率等进行了研究,揭示了射流长度分布为对数正态分布的统计规律。结果表明:通过调节喷射气压和输入最优激振频率,可以提高金属射流断裂的形态精度和尺寸精度,使射流长度和形态误差达到最小值,可为后续制造过程提供稳定的均匀微滴流。 Aiming at the existing problems that random variation of metal jet fracture, jet length and other parameters are difficult to control and predict in droplet deposition manufacturing, a combination of experimental research and theoretical analysis is used to analyze the jet shape, jet length and its length Influencing factors such as oxygen concentration and excitation frequency were studied, and the statistical laws of logarithmic normal distribution of jet length distribution were revealed. The results show that by adjusting the jet pressure and inputting the optimal excitation frequency, the shape accuracy and dimensional accuracy of the metal jet fracture can be improved, the jet length and shape error can be minimized, and a stable and uniform droplet flow can be provided for the subsequent manufacturing process.