SU1005986A1 - Die for cutting-off angles blanks - Google Patents

Abstract

STAMP FOR CUTTING FROM ANGULAR ROLLS, containing the lower plate with the matrix and subframe: the lower part of the clamp, the upper SPLITA with the shift set on it / ... ;; d -; .. ",. Columns and sleeves, characterized in that, in order to reduce changeover time, it is provided with a stand mounted on the bottom plate with a threaded hole and a screw installed in said threaded hole, wherein the matrix is made up of three sections, the middle of which is installed with in possibility of movement along the bottom Eileithyia and associated with the screw, and the other two are fixedly attached to the bottom plate.

Description

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The invention relates to the processing of metals by pressure and can be used in mechanical engineering in the manufacture of structural elements of angular rolled metal.

A stamp is known for cutting billets from angular rolled products, containing a lower plate with a matrix and spring-loaded lower clamp, an upper plate with a replaceable punch installed on it and a spring-loaded upper clamp, guide columns and sleeves ti. A disadvantage of the known stamp is that significant time

The purpose of the invention is to reduce the time to changeover stamp.

The goal is achieved by the fact that a stamp for cutting pieces from angular rolled products containing a bottom plate with a matrix and a spring-loaded lower clamp, an upper plate with a replaceable punch mounted on it and a spring-loaded upper clamp, guiding columns and sleeves with a threaded hole and a screw installed in said threaded aperture-, wherein the matrix is made up of three sections, the middle of which is mounted for movement along the bottom plate and with in the bana with a screw, and the other two sections are rigidly fixed to

35 bottom plate.

FIG. 1 shows a stamp, a general view in pa3pe3ej in FIG. 2 is the same, LOWER view} in FIG. 3 shows section A-A in FIG. 2; in fig. 4 - trimming

40 of the end of the strip in FIG. 3 - blank for two parts with ledges at both ends; in fig. 6 - cutting the workpiece into two parts with ledges at both ends; in fig. 7 - cutting the workpiece into two identical parts

45 with a ledge at one end; in fig. 8 cutting the workpiece into two symmetrical parts (left and right); in fig. 9 - a detail after a stamp with ledges at both ends.

50

The stamp contains the bottom plate 1, which is connected with the top plate 2 by the push-in columns 3 and vt.11kami 4, 55

Matrix sections 5 and 6

on section 7, which is adjusted by screw 8 with locknut 9.

A bottom clamp 11 is associated with the bottom plate by a screw 10. In the upper part of the die there is a punch holder 12 interchangeable punch 13 with a different step size a. The punches are secured in the piercer with the help of shoulders and a clamping strap 14 with screws 15. The puncture holder is fastened with screws 16. The adjustable stop 17 is designed as a self-contained unit (conventionally shown). The clamp 11 is pressed from below by the spring 18.

The upper clamp 21 is connected to the upper plate by means of screws 19 and springs 20. On the lower plate there is fixed a counter-clamp 22, which interacts with the anti-pinch of a punch 2 and a stand 24.,

The preparation of the stamp for work consists in establishing the smith of the punch 13 with the required value, step a, installing the movable section 7 with a cutting gap and mounting the stop 17 by a workpiece size equal to two parts and 2L, where L is the length of the part.

The stamp works as follows.

The end of the strip is initially trimmed (Fig. 4). The strip is fed up to the stop 17. When the upper plate 2 is lowered, the clamp 21 presses the strip against the die sections, and the clamp 11 presses the corner strip from below. Prp the movement of the punch 13 is the separation of the strip angle on the workpiece with a ledge on both sides (Fig. 5),

For cutting into parts with ledges from two ends, the billet from the right brook is installed into the left, and from the left into the right brook, the working stroke of the stamp is made and four parts with ledges at both ends are obtained (Fig. 6). .

To obtain one-sided identical parts (Fig. 7), the workpiece is cut along line I into two parts at a right angle to the corner strip. For the total, it is necessary to install the punch 13 without a step, and install the movable section 7 to the punch with a cutting gap.,

Offered. A stamping bar for cutting billets from the angle bar allows you to reduce the time for retooling compared to the known device.

FIG. five

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Claims (1)

STAMP FOR CUTTING OFFERS FROM ANGULAR RENT, containing a lower plate with a matrix and a spring-loaded lower clip, an upper plate with a replaceable punch and a spring-loaded upper clip mounted on it, guide columns and bushings, characterized in that, in order to reduce the time for readjustment, it is equipped with a stand fixed on the bottom plate with a threaded hole and a screw * installed in the specified threaded hole, while the matrix is made up of three sections, the middle> of which is mounted with the possibility of changing scheniya along the bottom plate and is connected with the screw, and the other two are rigidly fixed on the bottom plate. FIG. 1