SU1260073A1 - Die for simultaneous pressworking of parts from two strips - Google Patents

Description

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The invention relates to a tooling for cold sheet forming and can be used in the manufacture of bent parts from two belts simultaneously.

The aim of the invention is to expand the technological capabilities of the stamp by a combination of operations.

Figure 1 schematically depicts the stamp, obsh, i view; Figure 2 shows the lower part of the stamp, a plan view; on fig.Z - section aa in figure 2; figure 4 - section bb in figure 2.

The stamp is intended for the manufacture of parts with a combined cut and flexible of two tapes at the same time and contains the upper plate 1, the lower tool in the form of a matrix 2 for cutting and bending, the upper tool in the form of a double-sided punch 3, 3; attached to the upper plate 1. The die 2 mounted on the bottom plate 4, the carrier also guides 5 ribbons installed in pairs on two sides of the matrix 2. On the top plate 1 there are also mounted stepping knives 6 installed in pairs on opposite sides of the punch 3. The top and bottom 4 plates are connected by guides

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columns 7. The punch 3 has bending 8 and 9 cutting edges. Matrix 2 and plate 4 have windows 10 and 11, respectively, for removing the finished part. Step knives b are placed parallel to the cutting 9 edges at a distance shorter than the length of the cutting edge of the upper tool.

The stamp works as follows.

The tapes (not shown) are fed into the stamp from two sides in the guides 5. When the upper plate 1 moves down, the stepping knives 6 pre-cut the tapes, leaving a jumper less than the length of the cutting edge of the punch 3 and equal to the distance between the stepping knives 6. At that At the same time, the cutting edges 8 of the punch 3 cut the lintel formed by the stepping blades 6, and the bending edges 9 bend the edges of the part 12 upwards. Detail 12 through windows 10 and li punch 3 pushes down. In one stroke of the press, two parts are obtained.

The stamp improves stamping performance, reduces metal consumption for part manufacturing, and improves part accuracy by combining operations.

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Claims (1)

STAMP FOR SIMULTANEOUS STAMPING OF PARTS FROM TWO TAPES, containing upper and lower tools with opposite cutting edges located perpendicular to the feed direction of the tapes, characterized in that, in order to expand the technological capabilities of the stamp by combining operations, the upper and lower tools are equipped with bending edges located perpendicularly detachable, and the upper tool is equipped with four stepper knives mounted in pairs on both sides parallel to the cutting edges and placed in each pair at a distance less than the length of the cutting edge of the upper tool, while the lower tool is made with a failure window. SU 1260073 FIG. 1