Abstract
In recent production of mechanical system, industrial productions need to be light weight and precise. So thin-structured parts making is more needed. But thin-structured parts are low rigid. So the effect of deformation is large. To precise machining, we need to evaluate actual parts deformation. Therefore on-machine estimation is important thing. The purpose of the research is to investigate an on-machine estimation method which can evaluate actual thin-structured parts deformation. In this research, we proposed estimation method that is combined the FEM analysis data with local measured strain data. And we applied the estimation method to multi-point holding. In this paper, we report the evaluation result of the estimation method.