FOLLOW DIE PROVIDING TURNING OF BILLET THROUGH 180 DEG BETWEEN STAMPING POSITIONS Russian patent published in 1994 - IPC

FIELD: plastic working of materials. SUBSTANCE: die has punch, punch holder and matrix and is further provided with ejector and detachable billet holder engageable with ejector and punch holder. Billet holder has opening for conjugation with ejector protrusion and two openings for receiving billets. Billet holder is disposed in symmetry with respect to vertical plane extending in axial alignment with opening for conjugation with protrusion and to horizontal plane extending in axial alignment with two receiving openings. Center-to-center distance of two billet receiving openings is equal to center-to-center distance of grooves for the first and second transfers of stamping in die. EFFECT: increased efficiency, improved quality of stamping and simplified construction. 4 dwg