Darbas anglų kalba. Mašinos elementai. Toothed-belt and worm gear transmission. Kinematic scheme. Introduction. Selection of an electric motor. Determination of transmission ratio and torque. Calculation of a reducer. Main parameters of worm-gear. Main parameters of worm gear-wheel. Verifying calculations for a worm-gear. Forces acting in the engagement. Orientational calculation of shafts. Design of dimensions of worm-wheel. The calculations of acting forces, torques and bending moments. Selection of bearings. Selection of keys. Dimensions of the housing and fastening. Calculation of a belt drive. Heat calculation. Selection of fits and lubrication.