中文摘要：

伺服冲压运动设计是伺服压力机实施伺服冲压作业的核心技术之一。提出NURBS运动曲线混合阶次插值方法,能任意给定冲压运动关键点上位置、速度或加速度中的一个或多个约束,以同时满足伺服冲压运动精确性和灵活性要求;提出快速生成给定时间的保压段冲压运动曲线算法;给出构造插值方程过程中合理设置切矢模长的取值方法,以避免运动曲线畸变;提出适当改变速度或加速度约束调节运动曲线性能的方法;在此基础上引入板料成形和伺服电动机驱动能力等约束,提出伺服冲压运动设计的一般流程,开发出交互式伺服冲压运动设计软件;以某型汽车翼子板拉深冲压运动设计为例进行了验证。

英文摘要：

The design of stamping motion is one of the key technologies to make the servo press performing stamping operation perfectly. An interpolation method considering constraints of different orders is proposed based on NURBS motion curve that any one or all constraints of position, velocity and acceleration can be defined at desired key points of the stamping motion in order to satisfy both accuracy and flexibility requirements. An algorithm is presented to generate the dwell section of stamping motion curve with given time span quickly. A reasonable solution is given to define the derivative magnitudes in construction of the interpolation equation to avoid stamping motion curve＇s distortion. A method to amend proper velocity or acceleration constraint is proposed to improve the performance of stamping motion curve. Following above discussion, a general process of servo stamping motion design is proposed and an interactive stamping motion design software is developed considering constraints from metal forming operation and actuation capability of the servomotors. Finally, the proposed stamping motion design method is demonstrated by a forming case of automobile wing workpiece.