Locking device and punch press slider is adjusted device for punch press slider adjusting screw

The utility model discloses a locking device for punch press slider adjusting screw, including master cylinder, vice hydro -cylinder, piston, sealing washer and lock nut, wherein, adjusting screw sets up in the inside of vice hydro -cylinder, and the piston setting has the regulation that suits with the step of adjusting screw upper end in the inside of piston on adjusting screw, form oil pressure locking oil pocket between piston, vice hydro -cylinder and the adjusting screw, and lock nut sets up in the bottom of piston, adjusting screw's tip be equipped with with lock nut inside the screw thread that suits, vice hydro -cylinder setting forms the overload protection oil pocket in the inside of master cylinder between vice hydro -cylinder and the master cylinder. The utility model also provides a punch press slider adjusting device. The utility model discloses the stability of precise punch at the bottom dead centre has been improved to the effectual back lash of having avoided screw between adjusting screw a