脊状结构组合式轮片状阴极工作齿齿形优化设计

发布时间：2018-04-22 12:14

本文选题：兵器科学与技术 + 脊状结构　；参考：《兵工学报》2015年08期

【摘要】：针对组合式轮片状阴极工作齿(TWTC)齿形优化设计,研究脊状结构的形状参数与减阻量之间的关系。根据湍流边界层粘性底层流速服从线性分布的规律,利用粘性底层流速分布公式来计算流场特性参数,提出将脊状结构、圆角过渡用于组合式TWTC齿形修形。对未修形、脊状结构、圆角过渡组合式TWTC修形的电解加工间隙流场进行仿真和试验验证。结果表明:采用脊状结构修形工作齿可以有效减小电解液流道的阻力,提高加工间隙电解液的流速,使加工间隙最高流速从42.5 m/s提高到58.6 m/s,加速了阳极溶解速度,提高了材料去除率;采用圆角过渡修形工作齿能够减少、甚至避免空穴、涡流、分离、气泡现象产生,实现均匀小间隙稳定深孔内螺旋线加工,提高加工精度和表面质量。
[Abstract]:The relationship between the shape parameters of the ridge structure and the drag reduction is studied in view of the optimum design of the tooth shape of the combined wheel plate cathode working tooth of TWTC. According to the linear distribution of viscous bottom velocity in turbulent boundary layer, the flow field characteristic parameters are calculated by the formula of viscous bottom velocity distribution, and the ridge structure and circular angle transition are used to modify the profile of the combined TWTC tooth. The gap flow field of ECM with unmodified, ridged structure and circular angle transition combined TWTC is simulated and tested. The results show that the modified teeth with ridge structure can effectively reduce the resistance of electrolyte channel, increase the flow rate of electrolyte in machining gap, and increase the maximum flow rate of machining gap from 42.5 m / s to 58.6 m / s, thus accelerating the rate of anodic dissolution. The material removal rate is improved and the hole, eddy current, separation and bubble phenomenon can be reduced or even avoided by using the fillet transition modification. The machining accuracy and surface quality of the spiral line in the deep hole can be improved by achieving uniform small clearance and stabilizing the spiral line in the deep hole.
【作者单位】：西北工业大学材料学院;西安工业大学机电工程学院;
【基金】：武器装备预先研究项目(62202014502) 陕西省特种加工重点实验室开放基金项目(ST12012) 兵器预先研究基金项目(62201070712)
【分类号】：TH132.41;TG662

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