SU1214277A1 - Drawing die - Google Patents

Description

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The invention relates to sheet punching and can be used in the manufacture of hollow parts from a sheet in the aircraft, automotive, instrument-making and other industrial areas.

The purpose of the invention is to improve the quality of finished products.

1 shows a stamp in the initial position, a general view; in FIG. 2, the same is in the working position (the left part is the intermediate position, the rights are the final position); Fig 3 additional ring in isometric projection.

The stamp is stamped from the bottom plate 1 with a glass 2 installed on it, guide columns 3 with bushings 4, which are pressed into the upper plate 5. In the top plate 5 a punch 6 is fixed with a shank 7, the Clamp 8 is suspended from the top plate 5 on columns 9 The force developed by the clamp 8 is determined by the prints 10. The glass J1 is attached to the glass J1, on which the stencil 12 and the workpiece 13 are located. and up olnitelnogo ring 16, which with its outer conical surface bears against the inner conical surface of the ring 14 and spring loaded by a spring 17. The spring 17 rests on ledge cup 2, which enters the lower part of the additional ring 6,

72

The stamp works as follows. The blank 13 is placed on the stencil 12 of the matrix I1. When moving the top plate 5 down the punch 6 starts

deformation of the workpiece 13. At the same time, the clamp 8 rests on the stencil 12 and provides a guaranteed gap between the workpiece 13 and the clamp 8 and prevents the formation of corrugations.

Upon further movement of the punch 6, the workpiece 13 occupies an intermediate position. In this case, the lower part of the extrudable part, including the radius of the transition of the bottom into the wall, enters into

the cavity of the additional ring 16. With further movement, the punch 6 and the spring 17 is compressed, and the ring 16 moves down the guide protrusion of the cup 2. At the same time, moving along the conical surface of the ring 14, the ring 16 compresses and blocks the dangerous section of the workpiece 13. to the punch 6. With further increase in the force, the spring 15 begins to compress and the ring 16, remaining compressed together with the ring 14, moves downwards. After the stretching process has been completed by forces of the springs 15 and 17. The punch elements are returned.

to the starting position.

The proposed chip allows increasing the height of the parts being stamped by 20–25% due to the effective blocking of the dangerous section in dia billet, improving the quality of finished products, and also allows the parts to be stretched to heat the original billets.

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ERRORS Order 82 / 15JjHpa 2M.S2aSS 2 S.

Branch PPP P "tevt 7" "Uzhgorod, ul, Proektna, 4

Claims (1)

DRAWING STAMP, containing a matrix fixed on the bottom plate with a vertically movable ring with a conical cavity mounted in its working hole and a punch and clamp mounted on the top plate, characterized in that, in order to improve the quality of the finished products, it is equipped with placed in a conical cavity of the main ring and concentrically with the possibility of their joint vertical movement by an additional ring, spring-loaded to the bottom plate and made from the side facing the punch, with a conical outer surface and longitudinal grooves. Figure 1 SU