SU1303245A1 - Die for extruding rod parts - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to the design of dies for extruding core parts. The aim of the invention is to increase the reliability of the stamp. Wedge polushki mounted on the bottom plate, installed with the possibility of interaction with the intermediate plate The drive of the sliders is made in the form of power cylinders. By operating the punch, the occurrence of bending longitudinal stresses is prevented at the time of the extraction of the obtained part from the punch. 1 3.p. f-ly, 4 ill., with (L with about 00 tsD

Description

The invention relates to the processing of metals by pressure and can be used for cold, half of which and hot extrusion of parts with a long rod.

The aim of the invention is to increase the reliability of the stamp.

Figure 1 shows the stamp in working condition at the end of the extrusion process; Fig. 2 shows the same before the start of the pressing process: in Fig. 3 - the same, in the process of extracting (drawing out) the core part of the part from the die; Fig. 4 - the same, after ejection of the part from the stamp of the designer.

The stamp contains lower 1, intermediate 2 and upper 3 plates, connected by guide columns and bushings (not shown), on which punch 4 with holder 5 is mounted and fixed, wedge sliders 6, connected by rods 7 with power cylinders 8, container -9, matrix 1 Oh with bandage 11 and holder 12..

The intermediate plate 2 is mounted on the rods 13 of the pistons 14 of the double-acting power cylinders 15 (Figures 1 and 2). Position 16 marked the workpiece.

The stamp works as follows.

When the press slider together with the top plate 3 and the die 10 are in the extreme upper position, the initial packing 16 is loaded into the container 9. During the working stroke of the press slide in the first stage of the stamp operation, the container 9 is connected (clamped) with the die 10 and pressed rods 13 (Fig. 2) In the second stage, the initial billet 16 is compressed in container 9 and a pressing process is carried out, during which plate 2 together with container 9 is moved downwards by H - H equal to the deformed length of the original block items (figure 1 and 2). When the container Y is rotated downward, friction forces are overcome (acting on the surface of its contact with the workpiece 16, as a result of which the pressing force of the container 9 and the matrix 10 increases in the plane of their connector.

During the return stroke of the press ram, the removed core part A of the part 16 is removed (pulled out) from the matrix 10, while its non-reformed part B is retained in the container 9 by friction forces T (FIG. 3). At this stage of the stamping operation, the intermediate plate 2, together with the container 9 and the extruded part 16, is held by the force of the rod 13 and the wedge slider 6 in the position it took at the end of the extrusion process (Figures 1 and 3).

After removing the core part A of the removed part I6 from the dies 10, when the press slider is in its extreme upper position, the power cylinders 8 are turned on. The wedge slider 6 moves from the punch axis, while the intermediate plate 2 by the force of the rods 13 smoothly moves downwards against the stop into the lower plate 1, and the extruded part 16 by the punch 4 is pushed out of the container 9 (Fig. 4).

After the extruded part 16 has been removed from the die, the work cycle is repeated.

The absence of bending longitudinal stresses in the process of extracting a part from a punch makes it possible to obtain parts of exact shape with a long rod (1 lOd).

Claims (2)

1. A die for extrusion of core parts, containing a bottom plate with an intermediate plate with a container fixed on it. under the workpiece mounted on the rods of the power cylinders with the possibility of axial movement relative to the punch, the top plate with a bandage mounted on it and a shaping matrix, characterized in that, in order to increase reliability, it is equipped with wedge slides mounted on the bottom plate with the possibility of interaction with the intermediate a slab on mating wedge surfaces and equipped with displacement drives in a plane perpendicular to the die axis in the form of power cylinders, and the matrix is made integral. 2. Stamp POP.1, which is similar to the fact that the power cylinders of the intermediate plate are made in the form of double acting cylinders. fig ten Sriga VNIIPI Order 1245/10 Circulation 583 Subscription Random polygons pr-tie, Uzhgorod, st. Project, 4