Improving the Drive of a Multi-operational Machine with a Multi V-Ribbed Belt

The article is devoted to the development of three-dimensional and parametric models of a modernized main movement drive for a machining center drilling-milling-boring type. The procedure for creating 3D models of parts and assemblies of the machine tool drive using the new CAD functionality Creo Parametric is presented. The features of modeling housing parts with complex geometry are considered. It is proposed to use a specialized module of the APM WinMachine system when parametric models of a multi-V-ribbed transmission of a machine drive are constructed. Using the APM Base application program, the effectiveness of developing a specialized section of the database using parametric models of drive components is shown. The idea to achieve increased traction capacity of a belt transmission by modifying the cross-sectional shape with a curved configuration has been put forward. The reasons for quantitative changes in belt performance have been identified. The identity of the main structural elements of the modified and standard design is noted. Analytical material on the modification of multi V-ribbed belts is presented. An alternative option, in which an increase in the length of the wedge side is observed for the case of a modified belt shape is shown. A comparative analysis of the main parameters of modified and standard multi V-ribbed belts is given. The most preferred standard size of belts is noted, where the greatest increase in performance indicators when modifying the profile of the belt wedges is expected. A coefficient for increasing the length of contact between the belt and the multi-V-ribbed pulley KL = 1.07 has been introduced, as an indicator of the criterion for increasing the traction capacity of the transmission.