Dvorak, K., Bilek, M., Dvorakova, S.
Abstract:
Creating 2D and 3D models in CAD and following creation of drawings are standard procedures for constructing in the current industrial practice. Most models of industrially produced machine parts can be made by basic processes of modeling using design or hybrid methods. Listed procedures are based on input of a basic – primitive body and its shaping using predefined design elements, combined with the use of construction methods from the default 2D geometry and using methods of extraction, rotation, or dragging a profile along the curve. Requirements of industrial practice and current production technological possibilities often require the implementation part of a more general form, which cannot be created by mentioned methods. In advanced stages of 3D models it is possible to use the methods of free surface shaping, based on creating of parametric, semi parametric or non-parametric network of 3D curves representing the basis for generating surface that defines the boundary of solid body.