自动机缓冲器特性与动强度研究

Research on buffer character and dynamic strength of gatling automata

自动机在射击过程中具有较大的后坐能量,这些后坐能量通过缓冲器进行消耗.为研究缓冲器主要性能参数——刚度、阻尼、预压力的变化对自动机后坐过程的影响以及最大后坐速度与摩擦力的关系,利用运动学仿真分析软件对某自动机缓冲器后坐过程与刚度、阻尼、预压力的关系进行了研究.研究表明,通过提高阻尼系数比降低刚度更能缓和冲击,且不需要延长后坐行程;考虑到共振对缓冲器活塞运动以及筒体形状精度的不利影响,利用有限元模态分析方法对缓冲器动强度与结构的关系进行了研究.分析结果为缓冲器性能参数优化设计提供参考,最终达到降低后坐冲击,提高射击精度和密集度的目的.

Automatic machine has larger recoil energy in the firing process , and these recoil energy is consumed by the buffer.In order to study of the relationship of buffer main performance parameters-stiffness, damping and pre-pressure changes automata recoil process as well as that of the maximum after sitting speed and friction , kine-matics simulation software is applied to an automatic machine buffer .Studies have shown that increasing the damping coefficient is more than effective reducing the stiffness in easing the impact , and it does not need to ex-tend the recoil stroke;taking into account the adverse effects of the resonance the buffer movement of the piston and cylinder shape accuracy , we use the finite element modal analysis method to study the relationship of strength and structure of dynamic buffer .The results of the analysis of buffer optimization design of parameters provide a reference , and ultimately reduce the recoil impact and improve shooting accuracy and intensity .