PPU is a pure cam structure transfer manipulator, in which the object can move along a predetermined trajectory under the action of servo or stepper motor. Through program control, it can stay at any position within its travel range, mainly used for automatic transmission, feeding, and removal of small parts in limited spaces. These functions are achieved through directional vertical and horizontal movement sequences. The linear guide rail has no rotational clearance and is equipped with a circulating needle roller bearing element, ensuring high precision and rigidity. The combination of servo motor and cam system forms a compact unit for complete load cycle. The main features of PPU are: the single cam drive mode ensures high-speed and stable operation, compact structure, and convenient installation; Debugging is simple, and multiple driving methods are available for selection; The cycle time is very short, and the cycle time can reach 0.4sZ. The travel position can be adjusted arbitrarily. High load transfer accuracy reduces design costs. PPU is divided into: translational (PP.U-L), translational belt (PP.U-L-EB), ultra high speed (PP.U-S), and rotary (PP.U-V).