The Overall Structural Design And Dynamic Simulation Of A12.7mm Chain Machine Gun

The paper on the background of the design and study of12.7mm chain machine gun, through the analysis of the characteristics and the working principle of the existing chain machine gun, the overall design of barrel buffering chain machine gun is put forward. Chain automatic cycle characteristics of machine gun, parameters of transmission system and the best ammunition feed route is mainly determined. The core of the chain machine guns is the chain automatic, which is on the basis of the chain drive. Through the analysis of the structure and working principle of the chain automatic, the key chain automata cycle characteristics of chain machine gun is put forward, based on the key chain automata cycle characteristics of chain machine gun, the parameters of transmission system and the main structure parameters are detailed designed; With the aid of computer3d cad tools SolidWorks software, the every parts of chain machine guns is detailed designed and the overall model of chain machine gun is assembled; The kinematics analysis of chain machine guns are carried out, the displacement, velocity, acceleration of the chain machine gun is get on the different firing frequency; Based on multi-rigid-body dynamics theory and the means of virtual prototype technology (virtual prototype model is established in ADAMS environment), kinematics and dynamics simulation is carried out on the chain machine gun, get the work characteristic of the chain machine guns, simulation results show that the chain machine gun could finish the work from ammunition feeding, ammunition ramming, locking bolt, firing, unlocking bolt, extraction to ejection, and the dynamic characteristics could satisfy the design requirements; Finite element analysis for some of the key components in the chain automatic has been done, the rationality of the design of the key parts and the reliability of its work are verified; At the same time, the power loss of the chain machine gun working is estimated, and the requirement of drive motor of a chain gun has been preliminary determined; On this basis, the preliminary exploration of advancing ignition in reducing the recoil force for the chain machine gun has carried out, and the principle project of chain machine gun is established; Focused on the problem of chain machine guns delayed firing, the principle scheme of late ignition prevention is established, make sure the safety of chain machine guns to work.The chain machine gun is still on the stage of development, the design of the research methods and conclusions this paper used have been achieved, could provide a certain basis and reference for chain gun further study and design.