摘要
电弧增减材复合制造过程存在复杂的层积效应和热效应,可制造性受多种因素影响,难以有效评估,导致工序规划难且效率低。为解决上述问题,提出一种考虑焊道下塌现象的电弧增减材复合制造工序规划方法。分析了电弧增材不同区域成形质量与堆积高度间关系规律,构建基于水平集的目标零件和加工工具的隐式模型,提出基于分割面高度矩阵的初步加工序列构建方法,建立刀具干涉碰撞和零件成形效果评估方法,研发了基于粒子群优化算法的加工工序优化模型。通过仿真和实验验证了新方法的性能。研究结果表明,新方法能获得有效的电弧增减材工序交替方案,相比于传统规划方法效率更高,且更适合于电弧增材过程。
There are complex multi-layers accumulation and thermal effects in the wire arc hybrid additive-subtractive manufacturing process.The manufacturability is affected by many factors and difficult to be evaluated effectively.These factors make the process planning difficult to implement and inefficient.To address the aforementioned issues,a process planning method of wire arc hybrid additive-subtractive manufacturing considering weld bead sagging phenomenon is proposed.The relationship between forming quality and deposition height in different areas of wire arc additive manufacturing is studied,and the implicit models of target part and machining tools based on level set functions are constructed.A preliminary machining sequence construction method is proposed based on the matrix of the heights of the segmentation planes.The evaluation methods for tool interference and forming quality are established,and a process planning model based on particle swarm optimization algorithm is developed.The performance of the proposed method is verified through simulation and experiments.The results indicate that the proposed method can obtain an effective alternative scheme for the wire arc hybrid additive-subtractive manufacturing process,and is more efficient and adaptable for the wire arc additive manufacturing compared to traditional methods.
作者
郭一鸣
张万元
宋世达
章晓勇
何非
王克鸿
GUO Yiming;ZHANG Wanyuan;SONG Shida;ZHANG Xiaoyong;HE Fei;WANG Kehong(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China;School of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China)
出处
《兵工学报》
北大核心
2025年第7期268-281,共14页
Acta Armamentarii
基金
国家自然科学基金项目(52305381)
江苏省自然科学基金青年项目(BK20210351)
中央高校基本科研业务费专项基金项目(30923011008)。
关键词
电弧增材制造
增减材复合制造
焊道下塌现象
工序规划
wire arc additive manufacturing
hybrid additive-subtractive manufacturing
weld bead sagging phenomenon
process planning
