NURBS-Based Feature Modeling and Trajectory Planning for Ram Motion of Servo Mechanical Presses

The programmability of ram motions ensures the ability to easily adapt to different stamping tasks such as drawing,stamping,blanking,coining,etc.A NUEBS-based representation is applied to model the feature of stamping operation and trajectory planning of ram motion that makes sure the ram motion matching the deformation rule of work piece material.The new technology is helpful to control the machine movement which leads to improving stamping operation with high productivity and avoiding large transient force and vibration by smooth approaching and slow releasing of the ram.