螺纹加工有限元分析.doc

螺纹加工的有限元分析ee(ee)指导教师:ee[摘要]传统的螺纹加工方法不仅加工效率低,而且切断了金属材料的纤维流向,严重降低了内螺纹的质量,难以满足生产中对螺纹连接件高精度、高强度的要求,而冷挤压成形是一种无屑加工方法,大大提高了螺纹的抗拉强度和抗疲劳性能。本文利用DEFORM软件对螺纹加工过程进行了仿真分析,实现了一般挤压攻丝过程和振动挤压攻丝过程的有效模拟。在一般攻丝过程中,分析了挤压速度对螺纹加工中丝锥所受应力,应变以及扭矩的影响,底孔直径对螺纹加工过程中应力应变以及扭矩的影响。并且完成了轴向振动攻丝与一般挤压攻丝的比较,发现振动攻丝过程中丝锥所受扭矩、应力、温度明显减小。[关键词]:内螺纹冷挤压挤压丝锥振动攻丝有限元分析FiniteElementAnalysisofThreadProcessingee(ee)Tutor:ee[Abstract]Thetraditionalthreadprocessingmethodisnotonlylowtheprocessingefficiency,andcutofftheflowofmetalmaterialsfiber,seriouslyreducethequalityoftheinternalthread,difficulttomeettherequirementsoftheproductionofthreadedconnectionhigh-precision,high-intensity,coldextrusionisascrapprocessingmethods,,utilizetheDEFORMsoftwaretoachievesimulationanalysisofthreadprocessing,,analysistheeffectoftheextrusionspeedforthestress、、thestrainandthetorquetothetap,,stress,temperaturesignificantlyreduced.[Keywords]:internalthread,coldextrusion,extrusiontap,vibrationtapping,FiniteElementAnalysis目录1绪论 83金属塑性变形有限元及Deform-3D介绍 104内螺纹冷挤压成形有限元模拟 = = = = = =