Actual Problems in Machine Building 2020 Vol. 7 No. 3-4

Актуальные проблемы в машиностроении. Том 7. № 3-4. 2020 Инновационные технологии в машиностроении ____________________________________________________________________ 11 COMPARATIVE ANALYSIS OF PROMISING TECHNOLOGICAL PROCESSES FOR THE PRODUCTION OF CARTRIDGE CASES FOR TRAUMATIC CARTRIDGES Semenov I.V. , Student, e-mail: ilyasemenov9715@mail.ru Vereshchagin P.V. , Ph.D. (Engineering), Associate Professor, e-mail: vpv@bti.secna.ru Biysk Technological Institute, Branch of Polzunov Altai State Technical University, 27 Trafimova st., Biysk, Altai region, 659305, Russian Federation Abstract Our research includes questions about the production of cartridge cases for firearms. The main focus is on the cartridge case for non-lethal weapon. The expediency of using a single technology for the production of cartridges for combat and traumatic cartridges is questioned. We have made the search for alternative designs of the cartridges. The analysis was performed on the metal content of the workpieces of the studied cartridge cases and the technological forces at the forming operations. Forces on various operations were calculated using mathematical dependencies or the finite element method. The metal content of the workpieces was checked by designing models in the CAD-system. When designing models of these cartridge case in the CAD-system, it was found that their metal content does not differ significantly.We have investigated and proposed a combined construction of a cartridge case made of a tube and an elastic bottom. This design has a lower metal content than the earlier studied cartridge cases.Using the finite element method, it was found that such a design requires less forces on the forming operations than the designs discussed earlier. So, we have identified a promising design of cartridge cases for traumatic cartridges, suitable for revolvers. Keywords Metal casings, cold sheet stamping, cartridges, non-lethal weapons, casings production technology, obturation, elastic obturator, automatic design systems, finite element method.