Mathematical Modeling Technique for Designing a Composite Technological Process for Machining Holes in Laminated Parts

Abstract

AbstractThe aim of the research presented in this article is to develop a new technological process for manufacturing and machining of laminated parts consisting of heterogeneous materials by combined methods. The basis of this process is the processing of holes in a pre-assembled package of sheet materials with different physical and mechanical properties. Regardless of the laminated parts’ design, the need to make holes in them during their production or assembly, as well as during repair work, is obvious. It is the heterogeneity of materials that creates difficulties when using traditional machining methods for laminated parts, such as drilling or the use of punching dies. In order to achieve the set goal, strength and plasticity of materials were brought together into a single quantitative parameter—the coefficient of machinability of sheet materials by cutting, which is the basis for modeling the technological process and further development of cutting tools. A mathematical model of the technological process was also developed, on the basis of which analytical dependences and quantitative relationships between the main parameters of the technological process were revealed. In the course of the experimental studies, the adequacy of the mathematical model to the real technological process has been confirmed, thus the possibility of its use for the processing of laminated parts has been established. The results of the conducted work are the basis for the special cutting tools and technological equipment development, necessary for the proposed technological process implementation for the laminated parts machining. The application of such equipment and implementation of the new technological process in the production of laminated parts can give a significant economic effect and expand the existing possibilities of processing such products under operational conditions.KeywordsLaminated partsComposite panelsTechnological process of obtaining holes in laminated panelsMathematical modeling of the technological process of cutting