Actual Problems in Machine Building 2015 No. 2

Актуальные проблемы в машиностроении. 2015. №2 Технологическое оборудование, оснастка и инструменты ____________________________________________________________________ 201 4. Атапин В.Г. Расчетное проектирование несущих конструкций тяжелых многоцеле- вых станков // Обработка металлов (технология, оборудование, инструменты). – 2011. – № 3 (52). – С. 27 – 34. TWO-PALLET MODELS OF A HEAVY ROTARY-MOVABLE TABLE Atapin V.G. , D.Sc. (Engineering), Professor, e-mail: teormech@ngs.ru Novosibirsk State Technical University, 20 Prospect K. Marksa, Novosibirsk, 630073, Russian Federation Abstract Two design pallet models, namely, a model of piecewise-constant thickness and a model of constant thickness within preset geometrical external dimensions are discussed. When optimizing pallets, two ways of changing the design variables were studied: a ) constant thickness for a single finite element, b ) constant thickness for a group of finite elements: Group 1 includes plate finite elements (FE) in the xz and yz planes, group 2 covers plate FEs in the xy plane, group 3 includes rod FEs. It is shown that both pallet models are almost identical in weight. The model of constant thickness within preset geometrical external sizes is recommended for practical application. Keywords heavy multi-purpose machine tool, rotary-movable table, modeling, carrier constructions, finite element method, optimization methods