SU1026918A1 - Die for flash-free forming - Google Patents

Abstract

A STAMP FOR BLACK-FREE STAMPING, containing the lower part with a working insert made in the form of a central and peripheral elements and the upper part with a working insert in which an ejector is installed, characterized in that, in order to improve the performance of the stamping process, it is provided with an upper part parts with a drive wedge with one-sided bevel, and the ejector is made with a wedge shank arranged to interact with the wedge. (L U //////// // A gche CX) from 00

Description

; The invention relates to squeezing production, and can be used to produce bulk-free mass production.

A stamp is known for a flawless binder containing a lower forging insert with a lower push rod, a spring-loaded packet of disc springs, and a upper forging insert ll.

A disadvantage of the known stamp is the increased energy consumption, since the stamping force exceeds the calculated force from the projection of the forging area by an amount proportional to the compression of the spring buffer,

A stamp is known for die-casting, containing a lower part with a working insert made in the form of a central and peripheral elements and an upper part with a working insert in which an ejector {2,

However, the well-known stamping is characterized by low productivity of the stamping process, since the stamping is performed by aa two transitions (not counting the draft draft), in n: preliminary and final strands.

The goal is to increase the productivity of the stamping process,

This goal is achieved by the fact that a die for die-casting, containing a lower part with a working center, made in the form of a central and peripheral elements and a top part with a working insert, in which the ejector is installed, is provided with an ejector in the upper part; bevel, and the ejector is made with a wedge shank located with the ability to interact with the wedge.

FIG. 1 shows the pc-amp dl. . punchless punching at the moment of opening the forming; Fig. 2 is the same at the time when the stamping process is completed.

The stamp for blockless stamping contains ng-gzhny forging insert 1 with the lower ejector 2, the upper forging insert 3 with the upper pulled ™

Nod 4, the supporting surface of which is made at an angle to the horizontal. To the upper forging insert

3 fixed lining 5, between the upper ejector 4 and lining

5 is located cdin 6 with a groove 7 along the profile corresponding to the cross-section of the copier 8 fixed stationary to the lower part of the stamp or the frame of the press.

. The stamp works as follows. The heated billet (shown in dotted line in Fig. 1) is placed on the lower forging insert 1. When the press slide moves down, the upper ejector 4 begins to deform the metal of the billet 9. Wedge

The 6 groove 7 slides along the straight-line section of the copier 8, and the upper ejector 4 does not move relative to the upper forging insert 3. At the time of completion of the formation of the basting in the workpiece 9, the groove 7 of the wedge

6 interacts with the inclined section of the copier 8, and as the npeicca slider continues to descend, the wedge B moves in the transverse direction. At the same time, a gap is formed between the wedge b and the upper ejector 4, and the upper ejector

4 does not exert pressure on the workpiece 9 "Upper forging insert 3, continues to descend and finally deforms the obtained annular workpiece 9 (Fig. 2). by increasing the thickness of the film under the firmware.

During the return stroke of the press ram, the wedge b, moving along the copier 8-, returns to its initial position, moving the ejector 4 to the initial position.

The process is repeated to obtain the next forging.

The proposed stamp for die-casting, as compared to the process profile, significantly improves the performance of the embossing process.

Claims (1)

A stamp for a trouble-free stamping, comprising a lower part with a working insert made in the form of central and peripheral elements and an upper part with a working insert in which the ejector is installed, characterized in that, in order to increase the productivity of the stamping process, it is equipped with located in the upper part of the drive wedge with a one-sided bevel, and the ejector is made with a wedge shank located with the possibility of interaction with the wedge. from SU .. „1026918 (put. 7