APPARATUS FOR REFORMING SHEET BLANKS Russian patent published in 1995 - IPC

FIELD: metal pressure forming, mainly at making flat sheet parts and at production of sheet blanks for deep drawing, direct and reverse extrusion, embossing and so on. SUBSTANCE: apparatus has pushing plates 5, 12, mounted on discs 3,4; the pushing plates 5, 12 have working cavities, whose shape coincides with a contour of the ready article 18, and the casing 6 for bringing those cavities, that may be mutually approached, together. Axis of shafts 1,2 are directed normally relative to a plane of reforming the sheet blank 18 with the aid of keys 8,13, the rings 9, 14 and the bolts 10, 15 respectively. The pushing plates 5, 12 are in the form of rings with multiseat arrangement of working cavities. The casing for bringing the above mentioned plates together is in the form of the ring 6, secured to the platform 3. The working cavities for reforming, provided in the pushing plate 12, have a height H, being in range 0.55-0.60 of a diameter of the article, that is H= (0.55-0.60)D. EFFECT: enlarged using range of the apparatus. 1 cl, 3 dwg