Considering the pivotal period that a glass plate is being bent to tapered windscreen, a new forming method and a 3D model for this method was presented, and an accurate forming algorithm was introduced. Two functional relationships, one is between the cable’s pulling displacement and the bended Plexiglas’s wrap angle, the other is between angular speed and cable’s pulling speed, were deduced to control the forming process. In this model, the position accuracy, foming speed and the synchronization of two sides’wrap angles can be definitely ensured. This method was proved in practical forming system.
