Servo Press Multi-motion & Snake Feeding
伺服压力机多段成形与蛇形走料
标签：伺服压机, 多段动作, 深折弯, 精密冲压
伺服压力机可在一次行程内编程「下压—保压—回退 2 mm—二次下压」多段动作，实现传统单动压机需两副模具的复合成形（如铜端子的先压印后折弯）。配合蛇形走料（料带在工位间折返）可把 12 工位排进 6 工位机床空间。编程要点：回退量 1–3 mm 让材料应力重排，二次压下量按试冲回弹角标定。薄料（<0.3 mm）多段压可消除传统工艺的拱面缺陷。
A servo press can program multi-motion in one stroke—"down, dwell, retract 2 mm, second down"—combining operations that used to need two dies (e.g., emboss then bend a copper terminal). Snake feeding folds the strip back between stations, packing 12 stations into a 6-station bed. Set retract 1–3 mm to redistribute stress; calibrate the second stroke against measured springback. On foil below 0.3 mm, multi-motion kills the doming defect of single-hit forming. ---