Abstract
In order to achieve precision and manageable machining, it is necessary to model a workholding process and predict workpiece deformation due to workholding. FEM based elastic analysis is applicable to the problem in principle. However, in the actual fixturing situation, actual workholding states do not show good agreements. In this study, a systematic experiment to figure out the variation factors in workholding is conducted. From the measured results, it becomes clear that rate of fixturing force increment and fixturing order affect workpiece deformation. Furthermore, obtained deformation and strains are compared with the FEM based deformation analysis.
