Andrey Shvets’s research while affiliated with Volgograd State Technical University and other places

The paper outlines the main directions for improving the strength of products in additive manufacturing using FFF technology, and studies methods for preparing control programs for 3D printing for additive manufacturing of products, including those using more than three degrees of freedom, as well as with reinforcement of products with continuous fiber. A method for automatically generating a control program for five-axis FFF printing of an arbitrary 3D model is described. A method of automatic generation for five-axis printing with continuous fiber laying has been developed, and software based on it has been created. Samples of products were made using the method of five-axis printing with continuous reinforcement.

The paper provides an overview of ways to increase the strength of polymer products obtained by fused filament fabrication (FFF) technology. An algorithm for calculating the spiral toolpaths for the material deposition using multi-axis printing is proposed. The design of the five-axis device for spiral-shaped deposition of the material is shown. The description of the proposed printing method is given. The results of comparative three-point bend and compression tests are presented. The standard samples obtained in the usual way by FFF technology, as well as samples with 2, 4, 6, 8 and 10 reinforcing layers obtained by spiral deposition of the material were investigated. The description of the tests is given, the dependences of the strength of the products on the number of reinforcing layers are obtained. Conclusions about the influence of the layer deposition method on the strength of the products are formulated.

A review of Drop-on-Demand additive manufacturing methods was held. A method of complex forms aluminum parts production through the application of magnetohydrodynamic pump and 5 axis manufacturing process was proposed. 5 axis 3D printer assembly was shown. A few operation modes were proposed for such 3D printer and a method for fill lines paths calculating, needed for G-code automatic generation, was established. The algorithm for calculating printhead moving trajectory in the cylindrical parts manufacture mode was shown.