螺纹型式自动步枪膛口装置接口设计及强度分析

摘要

对比研究了国内外自动步枪膛口装置的接口型式，概述了目前国内步枪膛口装置接口型式存在的不足。重点针对国内自动步枪膛口装置与枪管销接型式连接强度不足的情况进行了详细分析，设计了采用螺纹型式的自动步枪膛口装置接口，并分别用理论计算和有限元仿真两种方法对螺纹接口的连接强度进行了分析计算。计算和仿真结果表明膛口结构采用螺纹连接后强度满足设计要求。%The rife connection types at home and abroad were compared and studied , and the defects of domestic rife muzzle attachment’s connection type were summarized .After the reasons for the strength shortages of the domestic rife muzzle attachment ’s pin connection were analyzed ,a screw connection type for muzzle attachment was put forward ,and the strength of the screw connection was analyzed by using theoretical arithmetic and FEM analysis .The study results show that the strength of improved muzzle attachment using screw connection can meet the design requirement .