Ensuring accuracy when transferring shape and size from a 3D model to a real product

Abstract

DOI: https://doi.org/10.32820/2079-1747-2020-25-107-113

The aim of the work is the establishment of dimensional and economic ties in the manufacture of bulk sheet products from thermoplastic materials using CAM technologies. At the same time, an urgent scientific and practical problem is solved, which consists in the need to develop scientific foundations for improving the quality and efficiency of manufacturing interior panels from thermoplastic sheet materials in the conditions of discrete-unstable release programs.
Plazo-template method of manufacturing thin panels is widely used. The increased accuracy of the reciprocal linking of parts, when reached, is achieved by the prompt technological processes following the principle of the linked selection of forms and distribution of virology. The advent of high-precision multi-axis machining centers allows fundamentally changing the technology of manufacturing thin-walled panels. The technological process is a set of operations for the manufacture of a virtual 3D-model of the product, the analytical circuit that is set, the manufacture of equipment at machining centers, panel shaping and its mechanical processing. This technological process (CAM technology) is less time-consuming compared to the plazo-template technology and allows manufacturing products in small numbers, and often in single copies with high quality and lower cost.
As a result of the work, an analytical dependence of the change in the accuracy of shapes and sizes during the transition from the 3D-model to the real product was established, which allows assigning tolerances on the forming tooling taking into account the further bending of the workpieces.