УНІФІКАЦІЯ ТЕХНОЛОГІЧНОГО ОСНАЩЕННЯ ПРИ ВИГОТОВЛЕННІ ПРОФІЛЬНИХ ДЕТАЛЕЙ ІЗ КОМПОЗИТІВ ДЛЯ ПІДВИЩЕННЯ ЯКОСТІ ВИРОБІВ АВІАЦІЙНО-КОСМІЧНОЇ ТЕХНІКИ

Abstract

Structures made of composite materials are widely used in modern transport equipment. These materials, along with a number of positive properties, are also characterized by significant harmful technological heredity. It manifests itself in the form of sufficiently large grooves, twisting of manufactured parts. First of all, this applies to thin-walled profile parts.Such parts and products are subject to strict requirements in terms of mass, strength and rigidity, as well as minimum deadlines and costs for technological preparation of production. It is possible to meet these requirements using the principles of unification.The paper considers the possibility of implementing the principles of unification on two typical examples: the production of profile products from composites, which consist of unified elements of different cross-sections, as well as the possibility of group (simultaneous) production of profile products of different cross-sections and lengths.Modern pultrusion machines are widely used for the production of such unidirectional (with reinforcement at an angle of zero degrees - i.e. along the article)) articles, such as caps of spars, ribs, stringers, stiffeners and others. The technological possibilities of various models of pultrusion machines for the production of long-dimensional composite products are analyzed. The comparison was made according to the previously calculated specific characteristics of these machines.When using the proposed options for unification, the time spent on the technological process may increase (for profiles, a complex cross-section is enough), but the time spent and the consumption of resources for production preparation are significantly reduced (up to 1.5...3.0 times).In general, the proposed measures make it possible to reduce the level of residual stresses, the level of energy consumption, increase the degree of manufacturability of production and shorten the terms of technological preparation of production.