Spring Buffer Device Optimization And Design Of A Gatling Gun

It is an important and long-term research subject to reduce the recoil resistance andimprove the firing accuracy of the Gatling gun. This paper takes the buffer device of Model11barrels30mm Gatling gun as the object to study,analyzes several important parameters ofthe buffer device, obtains each parameter optimal design value combination and designs aspring-damping structure’s buffer device. The main research contents and innovations are asfollows:Firstly, This paper bases on analyzing the bore resultant force of the new Gatling gun,writes the corresponding calculating program and obtains the curve data of the bore resultantforce. According to basic condition hypothesis and simple equivalent treatment of severalaspects of the gatling weapon, this paper establishes the dynamic calculation model andthree-dimensional solid model.Secondly,The method that many scholars research the bore resultant force of Gatling gunadded in dynamics simulation analysis software ADAMS is: establishing a comparativelyaccurate three-dimensional solid model, taking the longitudinal displacement of movement inthe cam curve groove as a reference and creating a script control command to realize the boreresultant force of Gatling gun added in the dynamic simulation analysis software ADAMS.This method is bound to increase the difficulty of the simulation analysis. At the same time,considering lacking of the reference material, only optimizing design the buffer device, noneeding to establish so complicated model and accumulating constantly the law of monotonicincreasing or decreasing of the angle of the barrels of the galting gun if using dynamicsimulation analysis software ADAMS. Therefore, this paper establishes simplified three-dimensional solid model, bases on the turned angle of the barrels, combines withdynamic simulation analysis software ADAMS coming with correlation function, seeks for asimple addition method of the bore resultant force that accords with actual condition of thegatling gun shooting in order, interval firing, delay firing, and lays the foundation for thedynamic simulation analysis of each aspect of future galting gun. The paper creats the curveof the barrel rotation angle–the bore resultant force, measures a firing frequency’s rotationangle of the barrel from firing point to the largest bore resultant force point. The angleprovides theory basis for adjusting the assembly layout of the buffer device and has a certainreference value for the buffer device installation.Thirdly, through optimization analysis of the gatling gun buffer device and comparisonwith the test results, this paper obtains a set of optimal design value combination makingrecoil resistance reduced. Owing to system equivalent damping coefficient’s larger sensitivityto the recoil resistance, this paper mainly researchs the relationship among the structure,material and impact of the weapons and system equivalent damping coefficient, seeks andidentifys the generating reason of this system equivalent damping coefficient. Beginning fromthe structure，this paper designs a spring damping type buffer device that combines a bufferspring and a structure of the damping loss function to solve a practical problem that makingrecoil resistance reduced. It provides a theoretical basis for designing the structure of thebuffer device of the weapon system and choosing damping material. It has certain value forreference to optimize design other parameters of the weapon mechanism.