Design of technological equipment by "top-down" modeling using skeletons
Abstract
For the maintenance and repair of wheeled vehicles, a variety of technological equipment of varying degrees of complexity is used. The need to design new and improve existing models of garage equipment is indicated. The design of prefabricated structures of technological equipment and their constituent elements using three-dimensional modeling methods is considered. The possibilities of using the principles of "bottom-up" and "bottom-up" modeling for the design of technological equipment are considered. Recommendations for choosing a modeling method are given, taking into account the complexity of the design object and the capabilities of the programs used. The peculiarities of the application of universal tools for the construction and analysis of sketches of the mechanisms of the moving skeleton (Motion Skeleton) are considered. The possibilities of building assemblies and subassemblies using the reference sketch of the skeleton and the function of the moving skeleton for the study of the kinematics of the mechanisms and their preliminary force analysis were analyzed. The expediency is substantiated and the features of the use of skeletons of spatial mechanisms are considered. Attention is paid to the features of building a spatial sketch (skeleton). The need for the correct connection of the geometry of components and assemblies in parametric three-dimensional modeling is indicated. Methods of combining skeleton geometries of subassemblies in the general assembly of the product are considered. The algorithm of the rational approach in the construction of skeletons and binding of the geometry of components in the subassembly and general assembly of the product is analyzed. The possibility of implementing the principles of "top-down" modeling in three-dimensional modeling programs with limited functions of building an electronic model of the product and implementing parameterization is considered.
Key words: design, technological equipment, modeling, skeleton, assembly, component.