Open AccessAUTOMATIC DESIGN FEATURES OF COMPLEX SHAPE DETAILS AND TECHNOLOGY OF THEIR MANUFACTURING
Author(s) -
V.A. Korotkov
Publication year - 2021
Publication title -
zbìrnik naukovih pracʹ dnìprodzeržinsʹkogo deržavnogo tehnìčnogo unìversitetu. tehnìčnì nauki/zbìrnik naukovih pracʹ dnìprovsʹkogo deržavnogo tehnìčnogo unìversitetu. tehnìčnì nauki
Language(s) - English
Resource type - Journals
eISSN - 2617-8389
pISSN - 2519-2884
DOI - 10.31319/2519-2884.39.2021.7
Subject(s) - process (computing) , automation , computer science , engineering drawing , set (abstract data type) , task (project management) , industrial engineering , product (mathematics) , manufacturing engineering , aerospace , documentation , engineering design process , mechanical engineering , engineering , systems engineering , mathematics , geometry , programming language , aerospace engineering , operating system
The creation of modern high-performance machines often involves design of details with complex surfacese and made with high precision. At the stage of design and preparation of production, project work is carried out using automation tools and modern information and computer technologies. The process of creating a project is accompanied by the preparation of appropriate documentation, sufficient to solve all possible questions, starting with the formation of a design task and disposal of the product at the end of its operation.
According to statistics, most details in mechanical engineering are simple in shape, relatively technological in production, and their surfaces are most often described in the drawings by a set of lines and circles (radius of curvature). This approach is economically justified and will ensure the reliable operation of the product during operation.
Significant difficulties arise when it is necessary to design parts with surfaces of complex geometric shape, when the geometric parameters are set by coordinate points. The accuracy of surface description depends on the number of such points and the accuracy of numerical data. Typical examples include turbine impellers, parts with aerodynamic surfaces that are used, for example, in the aerospace or rocket industries.
The process of manufacturing such parts is accompanied by overcoming specific difficulties in describing complex surfaces at the stages of design and technological preparation, as well as directly in the manufacture of parts on technological equipment, intermediate and final control of geometric accuracy.
An option for an effective solution of such problems is to record complex smooth surfaces, predefined by a set of coordinate points, splines. Modern design automation tools make it possible to use this mathematical method for modeling complex geometric objects and use it to calculate the trajectories of the forming tool on CNC machines.
On the example of parts from production, which has a complex surface, using computer-aided design systems considered options for making design and technological design decisions for production preparation, equipment design, control the accuracy of shaping when machining on CNC machines.