Abstract: “Positioning tables supported by linear bearings are adopted for various machines such as material handling robots and machine tools. The accuracy of positioning tables is acknowledged to be essential for the machines employing the positioning tables. For instance, deflection of a positioning table for a machine tool during operation affects the machining accuracy for the machine tool. Thus, it is of great importance to accurately predict the deflections of the positioning tables in the design process. However, the deflections of positioning tables supported by multiple linear roller bearings (LRBs) are not easy to estimate because of the complicated characteristics of LRBs with regard to the system configuration and applied load. In this study, the static deflection of a large positioning table containing a number of LRBs was investigated. To this end, an improved simulation model for the deflection of a LRB subjected to vertical load was employed. The static deflection model of a LRB”

Keywords: positioning table, linear roller bearing, static deflection