复杂曲面构件电解加工动态成型的阴极修正研究

项目名称： 复杂曲面构件电解加工动态成型的阴极修正研究

项目编号： No.51205199

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 机械工程学科

项目作者： 朱栋

作者单位： 南京航空航天大学

项目金额： 25万元

中文摘要： 整体叶盘等复杂曲面构件是航空发动机中关键部件，其质量好坏直接决定了航空发动机性能。电解加工具有无工具损耗、加工效率高等突出优势，已成为整体叶盘等复杂曲面构件的主流制造技术。在复杂曲面构件电解加工技术中，阴极精确设计与修正是提高加工精度的核心所在，课题针对阴极设计和修正问题将开展以下工作：1）针对目前阴极设计精度不高、阴极修正效率低、通用性不强等问题，提出基于电解加工动态成型过程的阴极修正方法。2）研究动态成型过程中电场、流场、电化学场的特性，建立多场耦合条件下的成型规律模型，优化间隙内的电场、流场分布。3）根据动态成型规律分析，采用模糊控制算法逆向修正阴极型面，提高阴极设计精度，为高效、精密电解加工奠定基础。4）开展复杂曲面构件电解加工试验研究，优化模型中各项参数，提高模型正确性和通用性。本课题研究将获得具有自主知识产权的原创性成果，具有重要和广泛的工业应用价值。

中文关键词： 复杂曲面；电解加工；阴极设计；流场；

英文摘要： The quality of complex surface components determines the engine performance. Blisk as one of the complex surface components is the key components of aero engine. Electrochemical machining (ECM) has its own unique advantages, such as no cathode loss, high efficiency, so it has become the main manufacturing method for these engine components. In the ECM process of complex surface components, cathode design and modification is the core technology to improve precision. And the following work will be carried out in this project. 1) A new cathode modification method, which is based on the dynamic shaping process in ECM, is proposed in order to enhance current low accuracy of cathode design, low efficiency and generality of the cathode modification. 2) A dynamic shaping law model is established by studying the characteristics of electric field, flow field, and electrochemical field in machining channel. Then the distribution of the electric field and flow field will be optimized according to this model. 3) The cathode profile will be modified by using fuzzy control algorithm on the basis of the dynamic shaping law analysis. Then the cathode's design accuracy will be improved greatly and a foundation for high efficiency and precision in ECM process will be laid. 4) Experimental investigation on complex surface componen

英文关键词： complex surface；ECM；cathode design；flow field；