Research on the motion law of naval gun shell drum based on globoidal indexing cam mechanism
A certain Naval Gun shell Drum adopts globoidal indexing cam mechanism with cosine acceleration motion law to achieve intermittent stepper motion.Due to sudden changes in acceleration at the beginning and end of the motion,vi-bration and flexible impact will occur when the motion stops,resulting in poor stability of the shell drum movement,which is not conducive to the handover of ammunition between the shell drum and the hoister.Based on the improved sine accelera-tion motion law of the basic motion law of the curved indexing cam mechanism,which has relatively small velocity and ac-celeration,and is continuous without sudden changes,the jump curve is optimized,a mathematical model is established,and the relevant coefficients are solved using Matlab to obtain the improved sine acceleration motion law of continuous jump.By comparing and analyzing the motion curves of the cam mechanism before and after improvement,the effectiveness of im-proving the motion law is demonstrated,and a solution is proposed to improve the smoothness of the spring drum motion.
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