si3n4陶瓷刀具切削性能的有限元研究以及切削参数的遗传算法优化机械工程专业论文.docxVIP

陶瓷刀具的最优切削参数，提出了一种陶瓷刀具的切削参数优化方法。关键词：有限元仿真；Si3N。陶瓷刀具；Deform；切削实验；遗传算法 陶瓷刀具的最优切削参数，提出了一种陶瓷刀具的切削参数优化方法。 关键词：有限元仿真；Si3N。陶瓷刀具；Deform；切削实验；遗传算法 万方数据 ABSIRACTABSTRACT ABSIRACT ABSTRACT With the development of new material technology,the tool performance requirements in cutting industry are getting more challenge The ceramic cutting tools exhibite high hardness，high wear resistance，high temperature resistant，which provide a very broad application prospect in many industries The research on the cutting performance of ceramic tools in general is conducted by very tedious experiment with many experimental parameters involved．The research Oll cutting performance needs to be repeated to ensure reliable and consistent database resulting in high COSt and long research period．With the development of high performance computing technology and new calculation algorithm，the finite element analysis(FEA)method has become an effective tool to solve complex engineering analysis and calculation，and it has been fully applied in all fields of industrial production．The analysis of FEA in the cutting field has mainly focused on the cutting simulation of carbide-based tools．However,the cutting process simulation of ceramic cutting tools is very limited，especial!y for the S i3N4 ceramic cutting t001．Because of the large differences in physical and mechanical properties between ceramic material and hard alloy material，the cutting simulation results of cemented carbide tools are not applicable for the analysis of ceramic cutting tools．In addition，in the past，the choice of cutting parameters of ceramic tools often ignored the constraints on the investment and the production cost，because the researchers always focus on the cutting parameters of ceramic cutting tools during the application．In view of the above stated problems，this paper uses the FEA method combined with cutting experiments to predict the cutting force，cutting temperature,and tool wear of Si3N4 cutting tools and also study the influence