SU1479194A1 - Device for hydrostatic extrusion of hollow articles - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used in the processing of blanks of hard-to-deform materials. The purpose of the invention is to increase productivity by combining the operations of pushing products out of the die and the container. When extruding a tubular billet with a plug, it is placed on the mandrel and, acting on the support sleeve associated with telescopic rods with the punch assembly, together with the mandrel moves down to the stop of the plug in the die. Then, the punch assembly is retracted to the initial position and at the same time lifts the sleeve mounted on the yoke, which pushes the product back into the working cavity of the container. Thereafter, the mandrel is driven downwardly, releasing the article. During the return stroke of the mandrel, the finished product is pushed out of the container. Such a constructive solution ensures the operation of the device in semi-automatic mode. 2 Il.

Description

one

The invention relates to the processing of metals by pressure and can be used in the processing of blanks of hard-to-deform materials.

The purpose of the invention is to increase productivity by combining the operation of pushing products out of the matrix and the container.

FIG. Figure 1 shows a device for hydrostatic pressing (on the left — in the initial position, on the right — at the time of the extrusion of the workpiece through the die); in fig. 2 shows the arrangement of the elements of the device after removing the mandrel from the die and the mandrel from the product (left) and at the time of inserting the mandrel into the container and removing the product from the container.

The device comprises a container 1 with the bottom part 2, placed on the bottom part 2 of the container 1, the matrix 3, the punch assembly 4, the mandrel 5 mounted on the rod 6 of the actuator 7 axial movement

the mandrel 5, the yoke 8 with the support sleeve 9, connected to the punch assembly using telescopic t g 10, and the stopper 11, the yoke 8 with the sleeve 9 is installed in the groove 12 of the bottom 2 of the container

The device works as follows.

In the initial position, the mandrel 5 is located in the working chamber of the container 1. A blank 13 and a plug 11 are placed on the mandrel 5. The working liquid is poured into the container 1. When the punch 4 is moved down, the plunger enters the working cavity of the container 1 and the fluid pressure rises. The blank 13 is extruded through the die 3, pressed onto the mandrel 5 and abutted against the sleeve 9, and then together with the mandrel and the support sleeve 9 moves down to the stop of the plug 11 into the die 3. After the deformation process is completed, the plug 4 is retracted to its original position. associated with the evil of the punch 4 at the same time raise the traverse 4 J

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8 with supporting sleeve 9. With sleeve 7, the sleeve 9 pulls the product 14 out of the matrix 3 back into the container 1. With the help of the actuator 7, the mandrel 5 is removed from the product 14 resting on the end face of the sleeve 9. When the actuator 7 moves backward, the mandrel 5 pushes product 14 of the working chamber of the container 1. The duty cycle is completed.

The device provides the ability to process tubular shaped blanks at operating liquid pressures up to 580 MPa.

Claims (1)

Invention Formula A device for hydrostatic pressing of hollow articles, comprising a container with a bottom part and a matrix placed on the bottom part of the container, as well as a punch assembly and a mandrel connected with driving its axial movement placed under the bottom part of the container, in order to increase productivity due to the combination of the ejection of the product from the matrix and from the container, it is equipped with a punch with a punch traverse to the supporting sleeve, in the bottom part of the container a cross section is made H, and the traverse with the support sleeve is installed in a groove with the possibility of the interaction of the support sleeve with the end face of the product.