One direction of the cross wedge rolling technology is to realize high-efficiency, precise and near-net-shape forming hollow axle with multi-wedge synchrostep cross wedge rolling. This paper deduced the rotated condition of forming hollow shaft with multi-wedge cross wedge rolling (MCWR) base on forming solid shaft with single-wedge cross wedge rolling, and analyzed technics parameters on the influence of rotated conditions. Through the finite element simulation we got rolling technics parameters on the effect of rolled piece and selecting principle, and then created the 3D model of the equal diameter period of hollow axle with the MCWR. By using DEFORM-3D software, the process of rolling equal diameter period was simulated. The result indicated that it is feasible to roll hollow axle with multi-wedge synchrostep by cross wedge rolling.

SolidWorks is a popular 3D design software．The characteristics and developing methods of SolidWorks which 3D design software are introduced, and studies the process of parametric design on SolidWorks software by using VB programming language, as well as the technologies of elaborating the program with API functions. And then combine with the crampoon elaborating the principle of process-driven method. When designing the large crampoon, we use the parametric design method to auto-form the 3D target crampoon model by constructing a interface software protype with which the crampoon demension parameters can be converted into some related program variables. That method not only improves the crampoon design efficiency and accuracy, but also provides some useful referenced experience to parametrical system design of other parts. Parametrization design has a wide application prospect in the field of mechanical parts designing.