SU1480930A1 - Combined-action die set - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular, to dies for processing sheet material. The goal is to increase the reliability of the stamp at work. The stamp contains an upper plate 1 with a die (M) 4 for trimming the flange, a punch (P) 3 for punching a hole in the bottom of the part 16, a pusher (B) 7 and installed in B 7 P 6 for punching a hole in the part wall. On the bottom plate 10 are located P 12 for trimming the flange, M 11 for punching a hole in the bottom and M 14 for punching a hole in the wall. A plate 5 is placed on the plate 1 for moving P 6. M 14 are mounted for movement parallel to the punch pressure axis, equipped with springs 15 and have flanges. P 6 have return springs and on the ends of the lead-in juice for centering M 14. When lowering the plate 1 M 4, the flange is trimmed according to P 12, P 3 punches holes in the bottom, B 7 rests on the bottom of part 16, and wedge 5 moves P 6 and those punch holes in the wall. At the same time, P 6 centers M 14 with its own regards. 3 hp f-ly, 1 ill.

Description

one

The invention relates to the processing of metals by pressure, in particular to dies for processing sheet material.

The purpose of the invention is to increase the reliability of the stamp.

The drawing shows a stamp at the beginning (left) and at the end (right) of the working stroke.

The stamp comprises a movable plate 1 with a holder 2 in which a punch 3 is fixed for punching a hole in the bottom, a matrix 4 for trimming the flange and a wedge 5 interacting with punches 6 for punching holes in the side walls of the part. In the die 4, an ejector 7 is mounted for movement parallel to the die pressure axis, in which the guides 8 and the springs 9 are rigidly mounted. The ejector 7 interacts with the crosshead of the press and with the springs providing the ejector travel of 2-3 mm (not shown). A matrix 11 for punching a hole in the bottom and a punch 12 for trimming the flange are mounted on the fixed plate 10 of the punch. In the punch 12, the guides 13 are rigidly fixed, in which the dies 14 formed with the flanges are installed to punch holes in the side walls of the part. . The dies 14 are spring-loaded from the flange side of the part with springs 15. At the working end of the punch 6, a lead-in juice is made to center the matrix 14.

The stamp works as follows.

The workpiece 16 is installed with a flange on the punch 12 and a bottom on the matrix 11. When lowering the movable plate 1, the punch 3 punches a hole in the bottom of the workpiece 16, and the matrix 4 cuts the flange. At the same time, the wedge 5, interacting with the wedge surfaces of the punches 6, moves the latter, and the holes are punched in the side walls of the workpiece 16. The matrix 14 is centered along the punch 6 due to its mobility, which makes it possible to compensate

misalignment due to different thickness of the material. When the plate 1 is lifted together with it, the matrix 4 and the wedge 5 rise. The ejector under the action of springs (not shown) moves the workpiece 16 in the matrix 4 down by 2-3 mm, then stops, while the cut flange of the workpiece 16 remains in the matrix 4 and further moves up with it. During the course of the 2-3 mm ejector, the punch 6, due to the operation of the springs 9, leaves the die 14 and rises unhindered. At the end of the stroke of the press slide up, the ejector 7 receives a movement from the crosshead of the press and pushes the workpiece 16 out of the die

4 on the cocked (for the time of the press press up) a reset device (not shown).

The implementation of the invention will improve the reliability of the stamp due to

0 compensation of the misalignment of the specimen and the matrix for punching a hole in the wall, which may occur due to the different thickness of the material.

25

Claims (2)

1. Combined action punch, containing in one part a punch for punching a hole in the bottom of a hollow part, an ejector with a guide hole, one at least punch for punching a hole in the wall of a hollow part mounted in the ejector guide hole with the possibility of moving perpendicularly the pressure axis of the punch, the wedge movement mechanism of the punch for punching a hole in the wall and the means for returning this punch, as well as containing in another part a socket for mounting the part and die for punching, from characterized in that, in order to increase the reliability of operation, the die for punching a hole in the wall is mounted for movement parallel to the pressure axis of the die. five 1480930 34 2. A stamp according to claim 1, characterized in that the holes in the wall are made with a flange, that the die for punching the holes in the die-bearing part of the die is equipped with a spring, the force is filled with grooves for placing the flange, the swarm is directed to the bottom of the slot mouth-4. The stamp of claim 1, wherein the detail is new. -5 by the fact that it is equipped with a matrix and poins3. Stamp according to nos. 1 and 2, which is different for trimming the flange of the part, in that the die is pierced in different parts of the die.