Theoretical justification of the kinematic parameter of the rotary working body Abdurakhim Yuldashev, Davronbek Kuldoshev, Nargiza Djuraeva, Aziz Urinov and Мusallam Mirzaeva E3S Web Conf., 494 (2024) 04038 Published online: 22 February 2024 DOI: 10.1051/e3sconf/202449404038