Single-punch simulation press for industrial presses for producing a solid product using one or more powder materials, including: • means for supplying (31, 32, 38) powder material(s); • a die for receiving said powder material(s), and for shaping the solid product to be produced, secured in an advantageously reversible manner to a die-holding table secured to the frame of the press; • an upper punch and a lower punch, translatable, suitable for engaging with one another at said die in order to compress the powder material(s) and produce the solid product; characterised: • in that the lower punch is connected to a system for uncoupling the means or members that provide the movement thereof, said means or members being constituted of a lower carriage, able to translate and to be guided between ball-guide pillars (11, 12) of the frame, said lower movable carriage being itself moved in translation by means of a ball or satellite roller screw activated by means of an electric motor, ensuring a translation to said lower punch at the level of the die; • in that the lower punch is not secured to the movable lower carriage; • in that the lower punch is connected to a disengagement and brake system, constituted by an adjustable spring acting radially on said punch, intended to restrict the travel thereof in the downward direction, so that the lower punch is in contact with the screw and the lower movable carriage only in an upward direction, said screw and the lower movable carriage being able by this disengagement system to drop back down by a set length without action on said punch, said punch being held by the spring - brake in order to keep the punch in contact with the powder material contained in the die when producing the solid product and perform thereupon a first compaction of adjustable intensity, the lower end of said lower punch coming into contact with the lower movable carriage only during the compression, proportioning and ejection phases. • means for supplying (31, 32, 38) powder material(s); • a die for receiving said powder material(s), and for shaping the solid product to be produced, secured in an advantageously reversible manner to a die-holding table secured to the frame of the press; • an upper punch and a lower punch, translatable, suitable for engaging with one another at said die in order to compress the powder material(s) and produce the solid product; • in that the lower punch is connected to a system for uncoupling the means or members that provide the movement thereof, said means or members being constituted of a lower carriage, able to translate and to be guided between ball-guide pillars (11, 12) of the frame, said lower movable carriage being itself moved in translation by means of a ball or satellite roller screw activated by means of an electric motor, ensuring a translation to said lower punch at the level of the die; • in that the lower punch is not secured to the movable lower carriage; • in that the lower punch is connected to a disengagement and brake system, constituted by an adjustable spring acting radially on said punch, intended to restrict the travel thereof in the downward direction, so that the lower punch is in contact with the screw and the lower movable carriage only in an upward direction, said screw and the lower movable carriage being able by this disengagement system to drop back down by a set length without action on said punch, said punch being held by the spring - brake in order to keep the punch in contact with the powder material contained in the die when producing the solid product and perform thereupon a first compaction of adjustable intensity, the lower end of said lower punch coming into contact with the lower movable carriage only during the compression, proportioning and ejection phases.