摘要
建立了水射流辅助截齿破碎钴结壳的力学模型,通过仿真研究获取了水射流系统参数与截齿在钴结壳表面切出初始裂纹所需最小破碎力的作用规律。仿真结果表明:当水射流的作用点和截齿的作用点不重合时,水射流的辅助破碎不仅不能减小截齿所需的破碎力,反而会增加截齿所需的破碎力;当水射流的作用点和截齿的作用点重合时,水射流的辅助破碎能有效减小截齿所需的破碎力;与纯截齿破碎钴结壳相比,当水射流的压力为5 MPa时,截齿所需的破碎力下降幅度约为50%;随着水射流系统工作压力的增加,水射流系统的辅助破碎作用越强。
Mechanical model of fracturing the cobalt crusts by cutter and water jet was established. With simulation study, the relationship between water jet system parameters and cutter＇s minimum cutting force was obtained, which was needed to generate initial crack on cobalt crust surface. Simulation results show that when the working point of both water jet and cutter isn＇t overlap, water jet can＇t decrease cutter＇s minimum cutting foree. Conversely, it will inerease cutter＇s minimum cutting force. When water jet working point is overlap with cutter working point, water jet can decrease cutter＇s minimum cutting force obviously. Compared with cutter cutting alone, when water jet pressure is 5 MPa, cutter＇s minimum cutting force is reduced by 50%. With water jet working pressure inereasing, cutter＇s minimum cutting force is decreased correspondingly.
出处
《机械设计与研究》
CSCD
北大核心
2011年第6期31-33,共3页
Machine Design And Research
基金
国家自然科学基金资助项目(50804054)
湖南省教育厅重点资助项目(11A026)
湖南省学科带头人培养对象资助项目
关键词
水射流
截齿
破碎
钴结壳
water jet
cutter
fracture
cobalt crusts
