【摘要】 目前，三通阀门内腔多采用手工抛光技术，加工效率低，劳动强度大且环境友好性差。针对上述问题，本文开展三通阀门内腔磨粒流光整加工流场仿真分析与试验验证。通过建立流场仿真模型，对比了有芯模和无芯模情况下的流场分布，研制了专用的仿形夹具，并进行了试验验证。试验结果显示，使用芯模时阀门内壁面的粗糙度显著降低，大端降低率为77.79%，小端为77.26%，远超过无芯模加工的降低率（大端15.05%，小端11.62%）。因此，使用芯模不仅显著提高了加工质量，还提升了加工效率。更多还原

【Abstract】 The inner cavity of three-way valves is mostly polished by hand, which holds low processing efficiency, high labor intensity and poor environmental friendliness. In this regard, this paper carries out simulation analysis and experimental verification of the flow field of abrasive flow finishing in the inner cavity of a three-way valve. By establishing a flow field simulation model and comparing the flow field distribution with and without core molds, a special profiling fixture is developed and experimentally verified. The experimental results show that the roughness value of the inner wall surface of the valve is significantly reduced when the mandrel is used, with the reduction rate of the big end of 77.79% and the small end of 77.26%, which far exceeds the reduction rate of the coreless processing(15.05% for the big end and 11.62%for the small end). Therefore, using the mandrel can significantly improve the processing quality, as well as the processing efficiency.更多还原