Abstract: The three-dimensional parameterized model is constructed by analysis for strengthen and rigidity of C-type press body. On this base, the target and restriction functions of weight, stress and deformation of the body are formed by cross design and principle of least square method. The iterative optimization is carried out by ANSYS’ finite element software. The optimal dimensions for the C-type press body are obtained on the assurance of body’s strengthen and rigidity.

Key words: computer application, weight-lighten design, iterative optimization, C-type hydraulic press