Method of making a high torque battery terminal

摘要: A battery terminal with high torque resistance utilizing three sided frusto-conical recesses and mating protrusions extending from the method of making by a cold forming process that forms finished preworked lead slug driving one end punch through to remove excess material form an axial hole, second third portion close die chamber fourth radially expand into terminal. The dies for include movable multiple-segmented collapsing inward around top An ejector sleeve removes after process. cylindrical transition zone minimizes local pressures in while elongated vent passages allow air escape minimize formation irregular terminals.