Multistage hydraulic device, stamping system and equipment

The utility model relates to a hydraulic means technical field, concretely relates to multistage hydraulic device, stamping system and equipment. With the not good technical problem of punching presseffect of alleviating the single cylinder hydraulic system that exists among the prior art. Include: the piston, including first piston head and first piston rod, first piston head position separatesin first cavity and with first cavity and is first have pole chamber and first no pole chamber, first piston rod is connected with first piston head to axis direction along first piston head is provided with the through -hole, the second piston, including second piston head and second piston rod, second piston head position in second cavity, second piston rod one end is connected with the second piston head, the other end passes the baffle and extend to the through -hole of first piston head in, auxiliary fixtures has the machined surface relative with the second piston rod with first piston rod. Realize the continuous