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新疆大学机械工程学院
Published:2019
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[1]胡国玉,周建平,毛俊豪.短电弧铣削加工极间流场仿真与试验研究[J].新疆大学学报(自然科学版),2019,36(04):387-394.
[1]胡国玉,周建平,毛俊豪.短电弧铣削加工极间流场仿真与试验研究[J].新疆大学学报(自然科学版),2019,36(04):387-394. DOI: 10.13568/j.cnki.651094.2019.04.002.
DOI:10.13568/j.cnki.651094.2019.04.002.
为解决短电弧铣削加工过程中熔融电蚀产物排除不畅和工件端面烧蚀现象
利用Comsol Multiphysics多物理场仿真软件对内充液作用下工作介质流场进行仿真研究.分析电极内直径、电极结构分别对加工过程中极间速度场、压力场分布规律
并试验验证了极间冲液效果.结果表明:电极内直径为6 mm时取得最大流速和速度梯度
提高了电蚀产物的排除速度和工件表面质量;中空和环孔配合电极提高了有效放电区域工作介质流速和加工稳定性
解决侧面进刀无有效工作介质注入极间而烧蚀工件表面的现象.
In order to solve the problems of poor removal effciency of melt erosion products and ablation of workpiece surface in short arc milling
the flow field of working medium under the action of inner filling fluid was simulated and analyzed by COMSOL multi-physical field simulation software. The influence of inner diameter and structure of electrode on the distribution of velocity field and pressure field between electrodes was analyzed
and the flushing effect between electrodes was verified by experiments. The results show that the maximum velocity and velocity gradient can be obtained when the inner diameter of the electrode is 6 mm
which improves the removal rate of corrosion products and the surface quality of the workpiece. The hollow and annular hole electrode can improve the working medium flow rate and processing stability in the effective discharge area
and solve the problem of workpiece surface ablation without the effective working medium injected between the poles.
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