Finite Element Analysis of Resin Mineral Composites Lathe Bed

Abstract

To study the static and dynamic performances of lathe bed made of resin mineral composite, a series of finite element analysis by ANSYS Workbench for lathe beds made of cast iron and resin mineral composite are conducted respectively in this article. It is proved by the results acquired from the static and modal analyses that the lathe bed made of resin mineral composite is better in both static and dynamic performances. The analyses results also give guidance to the design of resin mineral composite lathe bed. Introduction With the development of high speed and ultra-precision machining technology, using materials with high strength and damping properties have become a new trend for machine tool beds [1]. Traditional materials like cast iron are widely used as machine tools bed, but they can hardly meet the need of dynamic properties, heat stability and corrosion resistance. Resin mineral composite (RMC) is a new kind of material which has been more and more used as machine tool bed materials, especially in the field of high speed and ultra-precision machining [2]. It is manufactured by mixing a monomer or resin with aggregate and polymerizing which has prominent static and dynamic performances. Modeling The models established in Solid Works are imported into ANSYS Workbench, and some complicated factors originating from the heterogeneous property of RMC are minimized and several simplified assumptions are proposed for the simulation convenience, for example, all small holes and chamfers are ignored. The cast iron (HT300) bed and the RMC bed are shown in Fig.1, sharing the same overall dimensions of 1970mm×1195mm×1062 mm. (a)The simplified model of HT300 lathe bed (b)The simplified model of RMC lathe bed Fig.1 The simplified lathe bed model Necessary input data such as the material properties including modulus of elasticity, poison ratio and density are applied. The material data of HT300 and RMC is shown in Table 1. 5th International Conference on Information Engineering for Mechanics and Materials (ICIMM 2015) © 2015. The authors Published by Atlantis Press 1790 Table 1 Material properties Material HT300 RMC Density(kg/m3) 730