Hydraulic press and method for pressing objects

A hydraulic press as defined in any of the preceding claims, characterized in that inside the rod (3a) of the working piston (3), between the striking piston (7) and the impact body (10), a variable volume fluid space (7b) is provided, having an oil flow orifice (15) connected to a hydraulic channel to fill the fluid space (7b) for the purpose of moving the striking piston (7) to its striking position and to empty the fluid space (7b) for the purpose of carrying out the striking movement of the striking piston (7).

A hydraulic press as defined in any of the preceding claims, characterized in that the cylinder bushing (9) houses a fluid space (17) having an oil flow orifice (16) connected to a hydraulic channel to fill the fluid space (17) for the purpose of moving the impact body (10) to its hitting position and to empty the fluid space (17) for the purpose of carrying out the hitting movement of the impact body (10).

A hydraulic press as defined in any of the preceding claims, characterized in that the first end of the rod (3a) of the working piston (3) houses a variable volume fluid space (7a) connected to the first fluid space (2a) and adapted to be filled with hydraulic oil discharged from the fluid space (2a) and the pressure accumulator (4) to accomplish the striking movement of the striking piston (7).

A method of pressing objects by means of a hydraulic press comprising a pressure accumulator (4) and a body cylinder (1) housing a fluid space (2) and a working piston (3) whose rod (3a) extends to the outside of the body cylinder (1), the working piston (3) being adapted to be moved in the fluid space (2) divided into a first fluid space (2a) and a second fluid space (2b), characterized in that the pressing operation takes place in two successive steps, the first one thereof being carried out hydraulically by the movement of the working piston (3), and the second step being carried out by an impact body (10) connected to the hydraulic press and receiving a quick stroke from a striking piston (7) provided inside the working piston (3) and brought into the striking movement by applying a substantially high pressure on the first end of the striking piston (7) and by opening, in a fluid space (7b) preventing the striking piston (7) from moving towards the object (14) to be pressed, an oil supply orifice (15) connected to a hydraulic channel.