Abstract
The objective of this research is to investigate an evaluation method for low-rigidity parts fixturing in machining. The research focuses on effects of variational fixturing such as eccentricity of load, geometrical error of contact surface, positioning error of fixturing equipments, and so on. Many researches have demonstrated the effectiveness of the FEM by demonstrating the evaluation of the fixturing error. Because one of the most important problems of low-rigidity parts fixturing is a variation of fixturing conditions. The paper proposes a fixturing variation model to evaluate the error-prone fixturing. Firstly, a representation method of varied contact states is introduced. Then, the fixturing variation is represented based on the contact states representation method. Features of proposed representation method are parametric representation of contact area and boundary conditions. A simple example for variational evaluation is explained as an application of the fixturing variation model.
