Prediction of machining accuracy for vertical lathes

Abstract

This article proposes the methodology allowing a prediction of geometric and working accuracy of large CNC machines tools (MT). The presented approach to behavior predicting is applied to kinematics of vertical lathe with an emphasis on different machining conditions. The resultant deflections of a tool and workpiece (WP) are described within the entire workspace of the machine tool with a simulation of different working conditions, whereby it is possible to effectively use the workspace in terms of working accuracy (WA). The results of the presented methodology can be used for selection of the appropriate type of machine tool and machining technology as early as in the tendering stage. This reduces the time required to select and submit a machine tool quotation. The proposed methodology for predicting the geometry and WA has been verified on a vertical lathe (VL) produced by the company TOSHULIN a.s. © Springer International Publishing Switzerland 2014.