| 摘要 |
A method of operation of automation of riffle-gun arms in one cycle of operation of which there is provided the cartridge seating to the cartridge-chamber by means of the breech-mechanism, with clocking the channel of the barrel, shoot implementation, unlocking the channel of the barrel and extraction of the shot shell by the back motion of the breech-mechanism; at that the barrel due to interaction through the rifling with the bullet (missile) moving in it gets rotary motion round its long axis with direction opposite to the direction of rotation of the bullet (missile), with performing one complete turn in one cycle and with continuous rotation to the same side at shooting bursts, this is used directly for locking and unlocking the channel of the barrel. To simplify the structure of the arms, unlocking of the barrel takes place before the bullet (missile) leaves the barrel, and the excess pressure of powder gases in the barrel is used to give to the breech-mechanism through the shell bottom of pulse needed for extraction of the shell and for compression of back spring under action of which after that seating of the next cartridge to the cartridge chamber is performed; at that thebarrel mechanically interacts with the sear of the plunger mechanism with provision of its switch-off for implementation of impact by the pin (hammer) over the primer of the cartridge after locking the barrel only.
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