Alternative movement press or alternative movement stamp (1) comprising a press frame (3), a drive shaft (7), an output shaft (5), a planetary gear (9) that is sandwiched between the shaft of drive (7) and the output shaft (5), and an alternative movement male (11) joined with the output shaft (5), in which the planetary gear (9) has a gear housing (19) integral with the press frame, a solar shaft (21) that is connected to the drive shaft (7), a satellite carrier (27) connected to the output shaft (5) and an arrangement (33) of internal gear wheels , in which the solar tree (21) has a first and a second solar wheel (23, 25) that are jointly joined in rotation with the solar tree (21), and in which the satellite carrier (27) presents a first satellite (29) that meshes with the first solar wheel (23), and a second satellite (31) that meshes with the second wheel s olar (25), wherein the arrangement (33) of internal gear wheels comprises a first internal gear wheel (35) and a second internal gear wheel (39) that are mounted on the housing (19) of the gear solidarity way in rotation and axially displaceable, and in which an axial movement equipment (43) is provided by means of which the first and second internal gear wheels (35, 39) can be axially displaced to selectively engage the coupling first internal gearwheel (35) with the first satellite (29) in order to achieve a first gear ratio and to selectively couple the second internal gearwheel (39) with the second satellite (31) in order to achieve a second gear ratio.Prensa de movimiento alternativo o estampa de movimiento alternativo (1) que comprende un bastidor de prensa (3), un árbol de accionamiento (7), un árbol de salida (5), un engranaje planetario (9) que está intercalado entre el árbol de accionamiento (7) y el árbol de salida (5), y un macho de movimiento alternativo (11) unido con el árbol de salida (5), en la que el engranaje planetario (9) presenta una carcasa de engranaje (19) solidario del bastidor de l
