Abstract: A rocking press machine includes a swinging metal die 2 and a rocking shaft 1 mounted above the metal die 1 and transmitting a swinging motion to the metal die 2, with the angle of eccentricity of the central axis thereof and the angular velocity of the orbiting motion thereof being adjustable. A friction disk 3 is provided between the metal die 2 and rocking shaft 1, a gyro 4 encloses the metal die 2 or a frame 20 surrounding the metal die 2 and supports 5 provided outside the gyro 4, first projections 61 and first recesses 71 rotatably supporting the first projections formed on the metal die 2 or the surrounding frame 20 and in the gyro 4, second projections 62 and second recesses 72 rotatably supporting the second projections formed on the gyro 4 and the supports 5. The rocking press machine permits the metal die 2 to swing with freedom of angular motion in a two dimensional space, prevents the metal die 2 from rotating on its own central axis, and, thereby, permits obtaining accurate patterns.

Abstract: A rocking press machine comprising a swinging metal die 2 and a rocking shaft 1 mounted above the metal die 1 and transmitting a swinging motion to the metal die 2, with the angle of eccentricity of the central axis thereof and the angular velocity of the orbiting motion thereof being adjustable. A friction disk 3 is provided between the metal die 2 and rocking shaft 1, a gyro 4 encloses the metal die 2 or a frame 20 surrounding the metal die 2 and supports 5 provided outside the gyro 4, first projections 61 and first recesses 71 rotatably supporting the first projections formed on the metal die 2 or the surrounding frame 20 and in the gyro 4, second projections 62 and second recesses 72 rotatably supporting the second projections formed on the gyro 4 and the supports 5. The improved rocking press machine permits the metal die 2 to swing with freedom of angular motion in a two dimensional space, prevents the metal die 2 from rotating on its own central axis, and, thereby, permits obtaining accurate patterns.