SU1523208A1 - Tool for extruding articles of variable section - Google Patents

Abstract

The invention relates to the processing of materials by pressure, namely to tools for pressing products. The purpose of the invention is to expand the range of extruded products by pressing large-sized products with variable cross-section. The matrix 5 is made integral with a shaping point formed by the edges of the inserts (B) 8 symmetrically located one against the other and the surfaces of the inserts (VK) 9. The side surfaces B 8 are cylindrical, arranged at an acute angle to the pressing axis from the side of the holder and placed in the corresponding the cavity of the container 1. VK 9 are located in the working channel 2 with the possibility of axial movement. At 8, in the zone of the forming point, the matrix 5 rests on the side surfaces of the VC 9. The VC 9 has a cross section that increases towards the metal outflow. In the process of pressing, B 8 slides over the surfaces of the VC 9. Due to the fact that B 8 is constantly in the backed state on the side of the holder 6, they come closer together, i.e. reducing the height of the extruded profile. 8 il.

Description

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The invention relates to the processing of materials by pressure, and more specifically to tools for pressing products.

The purpose of the invention is to expand the range of compressible products by pressing large-sized items with variable cross-section.

Pa figs. 1 shows a tool in the original position, a slit on the front projection in FIG. 2 is a cross section A – A in FIG. 1; in fig. 3 - tool in the final postojeshsh, a cut on the frontaltoy projection; FIG. 4 is a section BB in FIG. H; Fig 5 - sechehshe. B-pa of FIG. one; Figs 6-8 are examples of compressible products.

The tool contains a container 1 with a working channel 2, mounted with a press stamp 3 with a press washer 4 at the opening end of the container 1 and the matrix 5 with a matrix holder b from the output end of the container 1 .: Matrix 5 is complete the composite and its forming point form c metrically located one against the other edge 7 of the inserts 8 and the surface of the saddle 9, the side surfaces of the inserts 8 are cylindrical, and form the luiie of these surfaces at an angle (ji to the axis of the npeccoBaifflH from the side of the holder The angle uL is It is in the range of 30 ... 70. At the output end of the container 1, there is a corresponding cavity for dismounting the inserts 8, which interact with this cavity with their lateral {surface-faces. The ends of the inserts 8 under the imago end face of the matrix holder b, and inserts have the ability

move in the direction perpendicular to the pressing axis. The inserts 9 are installed in the working channel 2 of the container 1 with the possibility of axial movement and have a cross section that increases in the direction of the outflow. talla. Inserts 8 in the area of the forming point with their edges are installed on the rolling surfaces of the liners 9. The matrix holder 6 has grooves for the passage of the liners 9 during the pressing process

The tool works as follows.

The blank prepared for pressing (not shown) is installed in the working channel 2. Parts of the tool are returned to the initial position. Yes

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The pressure on the press stamp 3 and the press washer 4 is pressed, the billet is depressed and the pressing is started. First, a section of maximum height is formed. As pressing together with the workpiece under the action of the press stamp 3, the inserts 9 move, which extend from the working channel 2 and enter the grooves of the matrix processor 6. In this case, the inserts 8, radially moving along the end of the matrix holder b, draw together . At the end of the extrusion, a minimum height section is formed.

The tool has a tough power circuit, which allows it to withstand high specific pressures and temperatures and to press products with large amounts and stretches, as well as to press hard-to-deform and heat-resistant materials.

Claims (1)

Invention Formula A tool for pressing variable section products, containing a container with a working channel, a composite matrix coaxially with HiiM, the forming point of which is formed symmetrically located one against the other inserts and variable section inserts placed in the working channel of the container with the possibility of axial movement, and mounted on the side surfaces of an insert, a matrix holder, in which grooves are made for the passage of the insertion from the output end of the container, and a ram with a pin a spring washer installed on the side of the lead-in end of the container, characterized in that, in order to expand the range of pressed products by pressing large-sized products with variable cross-section, the side surfaces of the inserts are cylindrical with forming, inclined to the pressing axis at the same acute angles from the side of the holder, and the inserts are installed with, the possibility of moving in the direction perpendicular to the axis of pressing, the section of the insert is smoothly increasing in the direction of expiration no metal, and in the cavity of the container is made part. current from the matrix with a surface corresponding to the side surface of the inserts. / 4-х / Fi9l In In Phys, V AT 8 Fzg.8