Actual Problems in Machine Building 2016 No. 3

Актуальные проблемы в машиностроении. 2016. №3 Инновационные технологии в машиностроении ____________________________________________________________________ 47 18. Fitting range data to primitives for rapid local 3D modeling using sparse range point clouds / S.-W. Kwon, F. Bosche, C. Kim, C.T. Haas, K.A. Liapi // Automation in Construction. – 2004. – Vol. 13, iss. 1. – P. 67–81. 19. Определение погрешности расположения секторов стабилизирующей секции геохода на основе данных координатного контроля / А.В. Вальтер, В.В. Аксенов, В.Ю. Бегляков, П.А. Чазов // Обработка металлов (технология, оборудование, инструменты). – 2015. – № 4 (69). – С. 31–42. 20. Вальтер А.В., Аксенов В.В . Определение отклонений геометрической формы оболочек корпусных изделий геохода // Актуальные проблемы современного машиностроения: сборник трудов Международной научно-практической конференции. – Томск: Изд-во ТПУ, 2014. – С. 165– 170. 21. Аксенов В.В., Вальтер А.В., Бегляков В.Ю . Обеспечение геометрической точности оболочки при сборке секций геохода // Обработка металлов (технология, оборудование, инструменты). – 2014. – № 4 (65). – С. 19–28. 22. Chen Z., Chen Z., Shenoi R.A . Influence of welding sequence on welding deformation and residual stress of a stiffened plate structure // Ocean Engineering. – 2015. – Vol. 106. – P. 271–280. 23. Deng D., Murakawa H., Liang W . Numerical simulation of welding distortion in large structures // Computer Methods in Applied Mechanics and Engineering. – 2007. – Vol. 196, iss. 45–48. – P. 4613–4627. DETERMINATION OF NUMERIC VALUES AND NATURE OF GEOMETRIC ERRORS OF GEOKHOD INTERMEDIATE UNIT'S SHELL Walter A.V. 1 , Ph.D. (Engineering), Associate Professor, e-mail: avwalter@tpu.ru Aksenov V.V. 1, 2 , D. Sc. (Engineering), Professor, e-mail: 55vva42@mail.ru Chernukhin R.V. 1 , Ph.D. (Engineering), Associate Professor, e-mail: rv_81@mail.ru 1 Yurga Institute of Technology, TPU, 26 Leningradskaya str., 652055, Yurga, Russian Federation 2 Institute of Coal of the Siberian Branch of the RAS, 10 Leningradskiy avenue, 650065, Kemerovo, Russian Federation Abstract This article is based on the research of a geokhod prototype that is new kind of a tunnel shield. The article contains the research results on production errors of an external body shell of an intermediate unit. There are a brief description of the object of study and relevance of the research. The importance of the task of ensuring accuracy of the shell is shown. The article includes the description of techniques of experimental researches, data processing and data analysis. There are formulas that are using for calculations of parameters of the mathematical models. This research is made on a base of coordinate measurements of the geokhod prototype during a test production. There are values of geometric errors of the external body shell and results of their statistical analysis. It is showed in the article that the errors can be partially explained by the production errors of body sectors and the errors of their relative assembling location. Also it is showed that the other significant part of the errors is welding distortions. Keywords Large segmented-ring assemblies, assembly, accuracy, geokhod, shell, CMM, intermediate unit