SU489288A3 - Forging device - Google Patents

Description

one

This invention relates to devices for stamping in split dies. . A device for punching forgings with a reverse bias is known, comprising two detachable dies and punches placed in their side cavities forming a die of a die.

In the known device, it is impossible to obtain forgings of the Type of blades with cylindrical sections, with all the wheel elements. When stamping these forgings in a known die, mechanical processing of cylindrical sections is required, which leads to an increase in the labor intensity of manufacturing the products, as well as to cutting the forging fibers, and this reduces the service properties of the products.

In order to reduce labor-intensive manufacturing of forgings with a reverse bias such as blades with cylindrical sections constituting the wheel elements, the split arrays are hingedly interconnected by an axis that is eccentrically mixed with respect to the axis of the stream and providing

ABOUT

The trajectory of movement of the connector of the matrix in accordance with the slope of the forging.

FIG. 1 shows the source log &

1 ka to be stamped in the proposed device, front view; FIG. 2, forging after stamping; on fig.Z - preg; attached device, section. I Crimped billet consists of blades | or blades 1 of aerodynamic profile

and two n 2 and 3, located at the ends of the scapula. The pits are provided with two optional protrusions 4 and 5, respectively, to facilitate centering of the workpiece. Forged blanks have

only sides 6-9, are made with a slope. The finished product has cylindrical

element 10 of a circle with radius R and center O, as well as elements 11 of a circle with radius p and center O, forming a reverse slope.

The proposed device comprises two split semi-matrices 12 and 13, forming a cavity 14 into which the preform will be crimped. Cavity 14, made in the shape of the finished product, is connected to tSoxoBbiMH cavities 15 and 16, where puvysyyig 17 and 18 are mixed, which are exposed to sludge cylinders (not shown). Pistons 19 and 2O p (gudynykh are made together with the punch-stone. The half-matrix 12 is fixed to the half-square 1 X 13 of the X-axis - X- with a pin 21, and this axis corresponds to the center O and provides the mixing of the half-matrix 12 along the trajectory according to Forgings. The device operates as follows. The preform 1 is placed in the cavity 14 between the split semi-matrices 12 and 10. The closure of the dies in the direction of arrow A is carried out by any known means, after which the punches 17 and 18 are mixed in the cavity 15 and 16 in the direction of arrows B and In under action Pistons 19 and 20 and pins 2 and 3 are formed in accordance with the shape shown in Fig. 2 To remove the forgings, punches 17 and 18 are removed from the device in the opposite direction shown by arrows B and C, and the semi-matrix 12 is rotated around the X axis -Xj for freeing cooking from the half-matrix 13 also through circular movement. The invention can be used not only for the manufacture of turbine blades, but also for the production of other parts in detachable dies requiring their rotational movement for 4youmies. The subject of the invention is a device for punching forgings with a reverse bias, containing two detachable dies and punches placed in their side cavities, forming a die of punch, characterized in that, in order to reduce the laboriousness of manufacturing forgings with a reverse bias such as blades, an axis placed eccentrically with respect to the axis of the stream and providing the path of movement of the split matrix in accordance with the gradient of the forging. 15 2 A FIG.