SU804097A1 - Die for separating sheet material - Google Patents

Description

one

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

A stamp is known, for the processing of metals by pressure, containing a matrix with a clamp mounted on it, moving along the direction of the stirring, of the punch, which is provided with an elastic element and adjusts the gap between the punch and the die 1.

This stamp cannot be used for punching holes or cutting parts along the contour, since the punch backing mechanism presses the punch against the die not along the entire contour.

The purpose of the invention is to compensate for wear of the working pair of the punch and die and to increase the purity of the cut when punching and cutting along a closed contour.

The goal is achieved by the fact that in the stamp the punch is made hollow and is composed of separate parts interconnected with the possibility of radial movement under the action of an elastic element hinged into the cavity of the punch and interacting with the plunger, as well as themes.

that the components of the punch are installed in the cage with gaps that are covered by liners that form a closed loop of the composite punch.

FIG. 1 shows a drawing, stamp, type

in front; in fig. 2 - the same, longitudinal

incision; in fig. 3 shows section A-A in FIG. one.

The stamp contains the bottom plate 1 with the guide columns 2 and the die 3. On the guide columns 2 a holder 4 is installed, which is spring-loaded to the upper plate 5 by springs 6. A plunger 7 is rigidly fixed to the plate 5. The components of the punch 8 are installed with gaps "a, overlapped liners 9, forming a closed loop composite punch. A pre-tensioned elastic element 10 is installed in the cavity of the punch, with which the plunger 7 passing through a window at the upper base of the punch is kinematically connected.

The stamp works as follows. When punching the hole, the upper plate 5 under the action of the rod 11 goes down, transmits the movement of the holder 4 through the springs 6 and through the plunger 7 to the punch 8, the Holder 4 presses the cutting material 12

to matrix 3 and stops. The punch 8 continues moving as far as it will go into the cutting material 12. At the moment of cutting, the cutting edges of the punch and inserts 9 are pressed all over the contour of the hole being punched to the contour of the inner window of the casing 4, and then to the cutout of the matrix 3, which allows for cutting the material without a gap .

The positive effect of using the proposed chip is expressed in increasing the service life of the working pair of chips. The semi-annual economic effect of using the device will be about 50 thousand rubles.

Claims (2)

1. A punch for separating sheet material containing a kinematically connected plunger punch, a die and an elastic element for adjustment the gap between the punch and the die and pressing the tool to the material in the separation process, characterized in that, in order to compensate for the wear of the working pair and increase the cleanliness of the cut along the entire contour when punching the hole, the punch is made Poland and is composed of cased parts connected between themselves with the possibility of radial movement under the action of an elastic element placed in the cavity of the punch and interacting with the plunger. 2. A stamp in accordance with claim 1, characterized in that the components of the punch are mounted in a cage with gaps which are covered with inserts forming a closed loop of the composite punch. Sources of information taken into account in the examination 1. USSR author's certificate number 196705. kl. B 21 D 28/14, 07.01.65 (prototype). //