TY JOUR TI INCREASING THE RIGIDITY OF THE SELF-CENTERING DEVICES OF LATHES KW rigidity KW load distribution KW spiral rack and pinion mechanism KW lathes JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Seregin, A.A. AU Nikitina, I.P. AU Krylova, S.E. PY 2021 IS 6 PB Belgorod State Technological University named after V.G. Shukhov