摘要
针对汽车发动机曲轴孔镗削加工后的同轴度值过大甚至超差,以及加工过程能效低等问题,开展了考虑同轴度的汽车发动机曲轴孔镗削工艺参数节能优化研究。分析了曲轴孔镗削同轴度影响因素,并基于有限元法和支持向量机回归算法建立了同轴度值预测模型;分析了曲轴孔镗削加工能耗特性,建立了以比能和最大同轴度值为目标的曲轴孔镗削加工工艺参数优化模型,并利用改进的多目标蜻蜓算法进行求解,确定了平衡能效和同轴度的最优工艺参数组合。案例研究表明,优化后最大同轴度值减小了10.81%,比能降低了4.61%,验证了优化模型的有效性。
To address the issues of the coaxiality value of the automobile engine crankshaft holes was too large or even out of tolerance after boring,and the low energy efficiency of boring processes,a study of processing parameter energy-saving optimization for boring automobile engine crankshaft holes was conducted considering coaxiality.The influencing factors of coaxiality in boring crankshaft holes were analyzed and the coaxiality value prediction models were established based on the finite element methods and support vector machine regression algorithms.Then,the energy consumption characteristics of boring crankshaft holes were analyzed,and a boring parameter optimization model was established aiming at specific energy and maximum coaxiality value.The improved multi-objective dragonfly algorithm was used to solve the model and the optimal combination of processing parameters to balance energy efficiency and coaxiality was determined.Finally,the case study indicates that after the optimization,the maximum coaxiality value is reduced by 10.81%,and the specific energy is reduced by 4.61%,which verifies the effectiveness of the optimization model.
作者
张登永
李聪波
吴少卿
张友
李承远
ZHANG Dengyong;LI Congbo;WU Shaoqing;ZHANG You;LI Chengyuan(State Key Laboratory of Mechanical Transmission for Advanced Equipment,Chongqing University,Chongqing,400044)
出处
《中国机械工程》
北大核心
2025年第6期1280-1289,共10页
China Mechanical Engineering
基金
国家自然科学基金(51975075)
重庆市技术创新与应用发展专项(cstc2020jscx-msxmX0221)。
关键词
汽车发动机曲轴孔
同轴度
节能优化
工艺参数
镗削加工
automobile engine crankshaft hole
coaxiality
energy-saving optimization
processing parameter
boring
