基于图论的船用柴油机机身关键孔系加工装夹方案优化

为解决大型薄壁框架件生产效率低、机身加工过程中翻转次数过多而导致精度难以保证等问题,提出基于图论的船用柴油机关键孔系加工装夹方案优化方法。分析柴油机机身关键孔系的加工特征,并确定其加工方案;采用VERICUT软件对整个加工流程进行仿真,并设计一种考虑约束条件的基于图论法的机身装夹路径优化方案;以某型号柴油机机身为对象进行实验。结果表明:利用该优化方案,有效减少了17.24%的机身装夹时间及加工时间,提高了加工效率。

Optimization of Key Hole Processing and Clamping Scheme for Marine Diesel Engine Block Based on Graph Theory

In order to solve the problems such as low production efficiency in large thin-walled frame parts machining process and difficulty in ensuring accuracy due to too much turning over times in the fuselage processing,marine diesel engine cylinder block key hole processing and clamping scheme optimization method was proposed based on graph theory.The processing characteristics of the key hole on the diesel engine cylinder were analyzed,and the processing scheme was determined;VERICUT software was used to simulate the whole machining process,and an optimal clamping path scheme was designed based on graph theory considering constraints;a certain type of diesel engine was used as the research object.The results show that by using the optimized scheme,the clamping time and processing time of the engine cylinder are effectively reduced by 17.24%,and the processing efficiency is improved.