大型伺服压力机拉深工艺轨迹规划及优化设计

Planed and Optimized Drawing Trajectory for Heavy Servo Presses

建立起轨迹划分为4个区间段的高效拉深工艺模式,并且通过设置关键点参数来控制拉深工艺参数。以冲压生产节拍最大为优化目标,建立了伺服压力机高效拉深工艺轨迹优化设计数学模型,采用惩罚函数和复合形相结合的优化算法进行求解,获得了满足传输机械手空间和时间、伺服电机动态限和热极限以及压力机最大速度和最大加速度等约束条件的最佳拉深工艺轨迹。通过实例,验证了伺服电机加减速控制算法和拉深工艺轨迹优化设计方法的正确性和有效性。

An efficient drawing mode with four-section drawing trajectory, is established for heavy servo presses. The drawing parameters are controlled by setting the parameter at key points. An mathematical model is set up to optimize the effieient drawing process for servo presses in order to maximize the punching rate, The model performs ealcuation with the combined penahy function and complex method to obtain the optimum drawing trajectory that fulfills the requirement of the restrictive conditions, such as the space and time limitation of the feeder, the torque and thermal limits of the servo motor, the maximum velocity and acceleration of a servo press. The verification was performed and prowls the servo motor acceleration/ deceleration control method and the drawing trajectory optimizing design are correet and effective.