Obrabotka Metallov 2015 No. 1

ОБРАБОТКА МЕТАЛЛОВ № 1 (66) 2015 49 ОБОРУДОВАНИЕ 13. Ravindran A., Ragsdell K.M., Reklaitis G.V. Engineering optimization: methods and applications. – 2nd ed. – New Jersey: John Wiley & Sons, 2006. – 688 p. – ISBN-10: 0–471–55814–1. – ISBN-13: 978-0- 471-55814-9. 14. Bunday B.D. Basic optimisation methods. – Lon- don: Edward Arnold, 1984. – 136 p. – ISBN-13: 978-0- 713-13506-0. – ISBN: 0-713-13506-9. 15. Атапин В.Г., Пель А.Н., Темников А.И. Сопро- тивление материалов. Базовый курс. Дополнитель- ные главы: учебник. – Новосибирск: Изд-во НГТУ, 2011. – 508 с. – (Учебники НГТУ). – ISBN 978-5- 7782-1750-8. 16. Атапин В.Г. Проектирование несущих кон- струкций тяжелых многоцелевых станков с учетом точности, производительности, массы // Вестник ма- шиностроения. – 2001. – № 2. – С. 3–6. 17. Демкин Н.Б . Контактирование шероховатых поверхностей. – М.: Наука, 1970. – 227 с. 18. Гжиров Р.И. Краткий справочник конструк- тора. – Л.: Машиностроение, Ленинградское отделе- ние, 1983. – 464 с. 19. Атапин В.Г., Пель А.Н., Темников А.И. Со- противление материалов: учебник. – Новосибирск: Изд-во НГТУ, 2006. – 556 с. – (Учебники НГТУ). – ISBN 5-7782-0605-4. OBRABOTKAMETALLOV (METAL WORKING AND MATERIAL SCIENCE) N 1(66), January – March 2015, Pages 42–50 Rational design of the column of a heavy multipurpose machining center 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 The main purpose in the design of supporting constructions of heavy multipurpose machining center is the reduction of mass at the given precision and productivity of machining. Accomplish these ends the technology of rational design of supporting constructions is offered. This technology is based on the decomposition method and the finite elements method in the combination with optimization methods. The technology has four stages: 1) calculation (computation) of external all forces and loads, 2) as a result of the boundary conditions (force, kinematics) for individual supporting constructions are formed, 3) a problem about final optimal distribution of a material by the individual supporting constructions with the real cross-section is solved; 4) dynamic analysis. By the example of design of the column of a heavy multipurpose machining center the main stages of rational design of the individual supporting construction are shown. At a design stage of the carrying system consisting of load-bearing structures with simplified geometry, optimum overall dimensions of the column are identified. For the admitted system of preferences, it is necessary to accept the fact that the carrying system with the column with the sizes of cross section of 1.8 m (on an axis x) and 2,6 m (on an axis y) is the best. The analysis of the work of the column under the torsion condition with the use of method of mechanics shows that the column with square cross section = 2,46 ∙ 2,46 m which rigidity on torsion is 26 % higher in comparison with a production version is the best. Results of calculation show that a production-release design of the column with longitudinal and transverse edges of rigidity is 24 % heavier than the column with the edges located on a diagonally at equal rigidity. However, the serial-hour less rigid than stand with slanted edges. Keywords: heavy multipurpose machining center, design, supporting constructions, column, finite elements method, optimization methods. DOI: 10.17212/1994-6309-2015-1-42-50 References 1. Atapin V.G. Raschet deformirovannogo sostoyaniya fundamenta tyazhelogo mnogotselevogo stanka [Calculation of the deformed state of the foundation of a heavymultipurposemachine tool]. Vestnik mashinostroeniya – Soviet Engineering Research , 1989, no. 6, pp. 31–32. (In Russian)