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Thermal Characteristic Estimation of NC Machining Center Bed following Rib Structure  

Kim, Yang-Jin (한국기계연구원 초정밀기계시스템연구실)
Publication Information
Journal of the Korean Society of Manufacturing Technology Engineers / v.19, no.6, 2010 , pp. 746-752 More about this Journal
Abstract
Rib structure has been used to bed and column of machine tool to heighten weight stiffness ratio, cost performance and weight saving. In this paper the bed rib structure was estimated with thermal characteristics. Using superposition principle, machine tool designer can describe every complicated heat generation in the machine tool thermal source. As thermal characteristics, thermal deformation of guide rail and column and Maximum-minimum temperature variation were selected. The size, configuration and direction against the thermal loading surface operated to the thermal characteristics. The DB chart was made following rib structure estimating thermal characteristics. With superposition principle and DB chart, machine tool designer can prognosticate the thermal characteristics without FEM analysis to every bed rib structure.
Keywords
Machine tool; Ribbed structure; Maximum-minimum temperature variation; Thermal displacement;
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