Abstract: The theory and process of forming eccentric shafts was first proposed in this paper. The functional equation of die surface for forming eccentric shafts and the maximum eccentric dimension were presented. The test for forming eccentric shafts used in the model of CAld1 truck was made as an example. The process was fully proved to be feasible by the test. The research results will play an important role in extending the appling field and engineering application of the process of cross wedge rolling.

Key words: 精密模锻, 偏心轴, 楔横轧