Návrh závěrového mechanismu samonabíjecí pistole

Abstract

In this bachelor work there is the review of the construction solutions of the breech mechanisms used in selfloading pistols. Single mechanisms are devided according to used locking lug and kinematice of the main moving parts. In each type of locking there are listed advantages and disadvantages of each construction solution. In the conclusion of the theoretical part there are listed premises for the idea of the proposal of the breech mechanism of the pistol. The second part of this work deals with the proposal and the parameters of the breech mechanism. In this work there were calculated internal ballistics quantities of the chosen caliber and on this basis was constructed the strength of the barrel. The functional diagram of the gun was based on the drive mechanism, losses of the energies produced during the automatical function and cyklogram. In this work there was proposed the constructional solution of the breech mechanism and the recoil spring of the breech mechanism. The proposal was verified from the point of the stregth by the calculation.