Automation of Obtaining Parts Parameters for Tasks of Design-Technological Parametrization

• Main Author: Alexander V. Shchekin
• Format: Article
• Language: English
• Published: National Research Mordova State University; MRSU 2019-09-01
• Series: Инженерные технологии и системы
• Subjects: parametrization; computer-aided design / computer-aided manufacturing; kompas-3d; control program; 3d-model; integration; application program interface
• Online Access: http://vestnik.mrsu.ru/index.php/en/articles2-en/84-19-3/713-10-15507-0236-2910-029-201903-2

Introduction. Automation of obtaining design parameters of the part is the most important step in the integration of the design, process planning and manufacturing. The aim of this work is to obtain part parameters, the numerical values of which can be used in parametric calculations. Materials and Methods. The work is the development of the concept of end-to-end design and technological parametrization in Computer-Aided Manufacturing. The theoretical research is based on the formal theory of data representation and processing, the set theory, and the theory of hierarchical multilevel systems. The software implementation was carried out in the Visual Studio C++ environment using KOMPAS-3D application program interface and the C3D geometric kernel application program interface. Results. A method has been developed for obtaining the initial part parameters during the transfer of information from the design engineering Computer-Aided Manufacturing systems to the technological preparation of production. A logical data structure in a relational form was developed, which made it possible to eliminate redundancy and ensure the consistency of the presentation of part parameters, taking into account the priorities of the sources of design information. The software method is implemented as part of the commercial Computer-Aided Manufacturing system for the KOMPAS- 3D platform. Source parameters (metadata, material properties, annotation parameters, parametric variables) are extracted from the 3D-model using application program interface. Integration with the KOMPAS-3D materials directory has been implemented to obtain material properties. Discussion and Conclusion. The obtaining of initial information about the part is the first step in the implementation of the end-to-end design and technological parameterization in the field of Computer-Aided Manufacturing. Due to the design and technological parameterization and associativity of the toolpath, a through technological project can be built when changes made by the designer to the part will be automatically transferred to the technological model and to the control program for the CNC machine. End-to-end parametrization is most efficiently used for parametrized parts that have several dimensional modifications. Further development of the technological parameterization is expected to focus on the tasks of the automatic workpiece selection, cutting tools and devices.