SU1315093A1 - Die for bilateral closed upsetting - Google Patents

Abstract

The invention relates to press-forging equipment and can be used for manufacturing. products with heads at the ends with the formation of fillets with double undercut. The purpose of the invention is the expansion of technological capabilities. It is achieved by making protrusions from the inner surface of the split matrix 8. The protrusions are located at one end, and on the other, between the sections of the matrix 8, elastic elements that separate the lower ends of the sections in a free state, thus freeing the finished product. 3 il. with (L with

Description

The invention relates to forging equipment and can be used for the manufacture of core products with heads at the ends with the formation of fillets with double undercut.

The purpose of the invention is to expand the technological capabilities of the stamp.

Fig. 1 shows a stamp in the initial and working positions, section (columns not shown); in fig. 2, section A-A in FIG. one; Fig. 3 is a matrix unfolding scheme.

The device contains the upper plate 1, a punch 2 mounted on it, spring-loaded — with respect to the top plate, an annular clamp 3 with a matrix cavity 4, a lower plate 5, an intermediate plate 6, spring-loaded relative to the bottom plate 5, placed on the intermediate plate a holder 7 with a conical cavity, mounted in the cage 7 axially detachable matrix 8 with the conical outer surface response to it, the lower punch 9. The conical cavity of the casing 7 with a large base faces the bottom plate, the cage 7 is installed with the possibility The ability to interact with the ring clamp 3, the split matrix 8 is made of at least four sectors, spring-loaded one relative to another in the tangential direction of the elastic elements 10, set with an offset towards the larger base, on the working surface of the split matrix 8, protrusions 11 are made on the side of its upper end to form fillets.

The stamp works as follows.

In the initial position of the stamp, the sectors of the separable matrix are open, the workpiece is placed on the upper end of the lower punch 9.

When moving the press ram (not shown) down plate 1, I act on the holder 7, lowers it,

In this case, the conical surface of the band 7 closes and centers, the sectors of the detachable matrix 8 of the ring spring 3 abut against the end of the casing 7, forming a cavity for forming the bolt head.

Next, the upper punch 3, acting on the workpiece, forms the bolt head, and the intermediate plate 6, moving in the hole of the lower plate 5 and overcoming the action of the springs, together with the matrix 8 descends

 down, deform the workpiece and form a fillet by means of protrusions 11. During the return stroke of the press slide, the intermediate plate 6 under the action of the springs takes the initial position determined by the adjusting bolts 12. The spring 7 also occupies the initial position under the action of the springs 8, which, under the action of the resilient cops 10, are opened, turning around the protrusions 11, thus releasing the bolt from the matrix 8, which is then freely removed. At the same time, the ring clamp 3 under

20, the action of the springs returns to its original position.

Claims (1)

Invention Formula  Stamp for two-sided, closed landing, mainly core products with a head and an undercut fillet containing the top plate with mounted on it thirty punch, annular clamp with matrix cavity, spring-loaded with respect to the top plate, lower plate, intermediate plate, spring-loaded with respect to the bottom plate, a clip with a conical cavity mounted with an IB clip, with an axially detachable matrix with an outer mating conical surface, placed on the intermediate plate, lower pu40 An anson, characterized in that, in order to expand the technological capabilities, the conical cavity of the cage with a large base diameter faces the lower plate, 45 the cage is installed with the possibility of interaction with the ring clamp; the split matrix is made of at least four sectors, springed one relative to the other in the tangential direction by elastic elements mounted offset towards the larger base, and on the working surface of the split matrix and from the side her top 55 butts are provided with protrusions for forming fillets. the bolt, and the intermediate plate 6, moving in the hole of the bottom plate 5 and overcoming the action of the springs, together with the matrix 8 is lowered down, deform the billet and form the fillet by means of projections 11. During the return stroke of the press slide, the intermediate plate 6 under the action of the springs occupies the initial position determined by the adjusting bolts 12. The cage 7 under the action of the springs also occupies the initial position which, under the action of the elastic elements 10, are opened, turning around the protrusions 11, thus releasing the bolt from the matrix 8, which is then freely removed. At the same time, the ring clamp 3 under the action of the springs returns to its original position. Invention Formula Stamp for two-sided, closed landing, mainly core products with a head and an undercut fillet containing the top plate with mounted on it punch, spring loaded 2 eight FIG. 3 Editor A, Sabo Compiled by N. Timofeeva Tehred L. Oliynyk Proofreader L. Pilipenko Order 2237/7. Circulation 582Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4