大导程螺母的内螺纹冷挤压加工工艺研究  

Research on cold extrusion processing technology of internal thread of large lead nut

作　　者：崔鑫 赵永强[1] 李瑞超 何亚银[1] 刘崇智 CUI Xin;ZHAO Yong-qiang;LI Rui-chao;HE Ya-yin;LIU Chong-zhi(School of Mechanical Engineering,Shaanxi University of Technology,Hanzhong 723000,China;China Aviation Aircraft Limited by Share Ltd,Changsha Landing Gear Branch,Hanzhong 723001,China)

机构地区：[1]陕西理工大学机械工程学院,陕西汉中723000 [2]中航飞机股份有限公司长沙起落架分公司,陕西汉中723001

出　　处：《陕西理工大学学报（自然科学版）》2019年第1期12-16,共5页Journal of Shaanxi University of Technology:Natural Science Edition

基　　金：陕西省重点研发计划项目(2017ZDXM-GY-138);陕西省教育厅专项科研计划项目(16JK1139)

摘　　要：针对大导程螺母难磨削的技术缺陷,提出了一种内螺纹冷挤压的成形加工方法,设计了一种专用的挤压丝锥结构,分析了影响冷挤压加工质量的几个因素。以M10-1. 5内螺纹挤压成形过程为例,利用有限元仿真软件DEFORM,分析了冷挤压过程中的应力、应变及其扭矩等的变化规律,对比理论计算与仿真分析结果,验证了模拟仿真方法确定挤压过程中最大扭矩的正确性。Aiming at the technical defect of hard grinding of large lead nut,a cold extrusion forming method for inner thread was put forward,a special extrusion tap structure was designed,and several factors affecting the quality of cold extrusion processing were analyzed.Taking the extrusion process of M10-1.5 internal thread as an example,the variation of stress,strain and torque during cold extrusion was analyzed by using finite element simulation software DEFORM.The results of theoretical calculation and simulation analysis were compared to verify the correctness of simulation method in determining the maximum torque during extrusion.

关 键 词：大导程螺母 内螺纹冷挤压 挤压丝锥 有限元仿真 

分 类 号：TG376.3[金属学及工艺—金属压力加工]