复杂曲面电解加工阴极空间进给方向优化方法研究

发布时间：2018-05-13 15:58

本文选题：电解加工 + 进给方向　；参考：《机械科学与技术》2015年12期

【摘要】：电解加工是航空发动机叶片、整体叶盘等复杂曲面零件的核心制造技术。阴极空间进给方向与阳极型面法线方向之间的θ角大小是影响电解加工精度的重要因素。传统阴极进给方向优化中,通常以θ角方差作为目标函数,在局部区域存在曲率突变的复杂曲面优化时,局部区域θ角仍可能较大,存在一定局限性。为了使全型面θ角最小,提出了以θ角集合最大夹角值为目标函数的优化新方法。以典型复杂曲面叶片为例,采用传统与提出方法分别开展进给方向优化,优化结果表明提出方法获得了合理的θ角分布。开展了两种优化方法的加工比较试验,提出方法试验样件具有更优的型面轮廓精度,证明了优化方法的可行性。
[Abstract]:Electrolysis machining (ECM) is the core manufacturing technology of complex curved surface parts such as aeroengine blades and integral blades. The magnitude of 胃 angle between the feed direction of cathode space and the normal direction of anode surface is an important factor that affects the precision of ECM. In the traditional cathode feed direction optimization, the variance of 胃 angle is usually taken as the objective function. When there is a curvature abrupt change in the local area of complex surface optimization, the local area 胃 angle may still be large, there are some limitations. In order to minimize the 胃 angle of the whole plane, a new optimization method with the maximum angle value of 胃 angle set as the objective function is proposed. Taking the blade of typical complex curved surface as an example, the traditional method and the proposed method are used to optimize the feed direction respectively. The optimization results show that the proposed method obtains reasonable 胃 angle distribution. A comparative experiment of two optimization methods was carried out, and it was put forward that the method has better profile precision, which proves the feasibility of the optimization method.
【作者单位】：南京航空航天大学金城学院;南京航空航天大学机电学院;
【基金】：国家自然科学基金项目(51405230) 航空科学基金项目(20133052)资助
【分类号】：TG662

【参考文献】