SU1346297A1 - Die for bending u-shaped articles - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used in shtamph for technological operations that require large clamping forces with limited dimensions of the stamp. The purpose of the invention is to improve the quality of products by increasing the clamping force at the end of the working stroke when bending stapled products from piece blanks. As the movable plate moves downward, the middle part of the workpiece is pressed against the die. The side punches driven by the wedges placed on the moving plate are mixed in the direction of the die. At the same time, the possibility of their movement is ensured by compressing the elastic cushion of the buffer only at the end of the working stroke. The movement of the punches is accomplished by bending the end portions of the plate. In this case, plastic deformation of bent sections of the workpiece occurs when the pressing force is concentrated on the non-deformable part of the product. 4 il. "About with 4 05 to with

Description

The invention relates to the processing of metals by pressure and can be widely used in dies for technological operations, heavy duty, their high clamping forces with limited dimensions of the stamp.

The purpose of the invention is to improve the quality of products by providing an opportunity to increase the clamping force at the points of contact of the bending elements and the support.

FIG. 1 shows the stamp in the initial position; in fig. 2 is a view A of FIG. one; in fig. 3 - display of the moment of approach of the punch to the workpiece (left side of the figure) and the moment of the final position of the tool (right side);

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On support 4, clamps 18 are provided for placing the workpiece before bending.

The stamp operation is dried in the following way.

The workpiece 17 is installed on the clips 18 or stencil on the support 4. When the working movement of the press slide, the clamp 5 clamps the workpiece. The punches 6 under the influence of the wedges 7 mix, come in the direction of the support 4. Due to the presence of the plate 11, at the end of the working stroke of the punch 6, the workpiece 17 is reliably clamped and its clamping part is prevented from being displaced, which guarantees plastic forming. ..."., ..,,.,.one ,

FIG. 4 scheme of elastic deformation buffer-. 5 in the workpiece area at the end of the working stroke.

Claims (1)

The stamp is arranged on the block. Based on the formula of the invention SRI 1 secured two protivootzhima 2, gasket 3 and support 4.. With each support and under-Stamp for bending clamp-shaped products with a clamp, there is a gap equal to the thickness of the piece blanks containing the support of the material being processed. In the direction of the Yu-20 fixed on the base, the lateral pointers nj.Hx but the gasket 3 moves the side sleeves, placed on the base on both staves 6, receiving the working movement of the rhone from the support, and fixed in the movement from the wedges 7. the punch part of the bending elements placed by the springs 8. The clamp 5 on both sides of the clamp mounted in fixed in the holder 9 and rests on the additional holder, as well as the buffer, which is different thinner gasket 10. On the strip 10 is installed plate 11, having slopes. The protruding part of the plate 11 is located above the support 4. The cushion 12 is clamped between the plate 11 and the clamp holder 13. The wedge holder through the gasket 14 rests on the movable plate 15. The plate 11 and the clamp 9 of the clamp 5 with the upper part of the stamp are connected with special screws 16. Between the support 4 and the clamp 5 is placed the workpiece 17. thirty that, in order to improve the quality of products due to the possibility of increasing the clamping force at the points of contact between the bending elements and the support, the clamp and the bending elements are made as a single unit, and the buffer is made as a strip with a protrusion in the middle part successively spliced facing in the direction of the clamp, and pads of elastic material sixteen On support 4, clamps 18 are provided for placing the workpiece before bending. The stamp operation is dried in the following way. The workpiece 17 is installed on the clips 18 or stencil on the support 4. When the working movement of the press slide, the clamp 5 clamps the workpiece. The punches 6 under the influence of the wedges 7 mix, come in the direction of the support 4. Due to the presence of the plate 11, at the end of the working stroke of the punch 6, the workpiece 17 is reliably pressed and its clamping part is prevented from being displaced, which guarantees plastic forming. ..."., ..,,.,.one , the work area Stamp for bending clamped products from piece blanks, containing a support 0 fixed on the base, side punches placed on the base on both sides of the support, and fixed in the movable part bending elements placed on both sides of the clamp installed in clip, as well as a buffer, characterized by 0 that, in order to improve the quality of products due to the possibility of increasing the clamping force at the points of contact between the bending elements and the support, the clamp and the bending elements are made as a single unit, and the buffer is made as a strip with a protrusion in the middle part successively spliced facing in the direction of the clamp, and the springs of elastic material. sixteen s f 18 Type A Sh  // 97 /////// 9g