SU990373A1 - Universal readjustable die for punching holes - Google Patents

Description

one

The invention relates to cold sheet punching and can be used to punch and punch various holes and grooves in parts made from sheet material.

A universally readjusting 5-die for punching holes is known, comprising a clamp-shaped body, a punch, a die and a press-remover, while the punch and the die are permanently fixed in the die body 1.y

A disadvantage of the known stamp is the stationary fixing of the punch and die in the die body, which complicates the condition of servicing when punching holes at different angles to the edge of the workpiece, since it requires 15 seconds to change working tools.

Closest to the invention to the technical essence and the achieved effect is a universal re-adjustable stamp for punching holes located at different angles to the edge of the workpiece, containing a case-shaped cartridge carrying punching tools in the form of a punch and die, and a clamp-remover, and equipped with a node the relative rotation of the workpiece and punching tools, which includes a rotary disk with grooves around the periphery and a catch installed with the possibility of interaction with the surfaces of the grooves 2 .

A disadvantage of the known stamp is the complexity of the conditions of service.

The aim of the invention is to simplify the conditions of service.

The goal is achieved by the fact that the universal re-adjustable stamp for punching holes located at different angles to the edge of the workpiece contains a cassette in the form of a body carrying stamping tools in the form of a punch and die, and a clamp-remover, and equipped with a unit for relative rotation of the workpiece and stamping tools including a rotatable disk with grooves around the periphery and a retainer installed with the ability to interact with the surfaces of the slots. In the stamp, the punch, the die, and the clamp-remover are pivotally mounted, and the stamp is provided with an additional swivel disk and retainer installed with the ability to interact with the surfaces of the grooves

an additional disk, one turntable rigidly connected to the die, the other to a retainer, and the latches rigidly connected to each other.

FIG. I shows the proposed stamp, side view, section; in fig. 2 shows section A-A in FIG. one; in fig. 3 - stamp, front view; in fig. 4 shows a section BB in FIG. 3

The cassette contains a bracket-shaped body 1, in the lower part of which a sleeve 2 is pressed, which serves to ensure the exact direction of the interchangeable dies 3, and in the upper part (Fig. 1 and 3) - a sleeve 4 for the exact vertical direction of the replaceable punches 5. Radial direction of the punches-5 with respect to the dies, interchangeable clamps b are provided with lower working elements made with minimum gaps in the shape of the working parts of the punches. The upper parts of the puller clamps 6 are made in the form of flanges freely accommodated in the casing 7. The cage is connected by means of screws 8 (Fig. 3) to a fork-shaped cup 9 held in the upper position by the spring 10. In the upper part of the glass a pressing device is mounted, consisting from the movable sleeve 11 and the buffer 12 and the transmitting force of the press during its working stroke simultaneously replaceable punches 5 and clamps-strippers 6.

The stamp is equipped with a unit for relative rotation of the stamping tool. The punch 5, the matrix 3 and the clamp-puller 6 are installed with the possibility of rotation. One turntable is rigidly connected to the die, and the other to the retainer.

Conical slots 13 and 14 are made around the circumference of the rotary disks for precise installation at a given angle on their flanges, and clamps 15 and 16 spring-loaded with springs 17 are mounted in the cassette case to be fixed in position. The clamps are connected between a strap 19, in the center of which a pivot stop 20 with a head wrist 21 is installed. To set the locks in the neutral position, a small slot 22 is made, and for inserting the locks into the working position for simultaneous fixing and the die and pressing tool with a punch made a deep slot 23, rotated 90 ° to the slot 22. In the slider press fixed device 24, acting on the punch.

Installation at specified angles and fixation of interchangeable dies and punches with presser pullers is carried out as follows.

First, the device 24 (FIGS. 1 and 3), actuated manually or by a press slider, punch 5 is inserted into the hole of the die 3 (FIGS. 1 and 2). Then, to ensure rotation of the die and the punch with the puller clamp 6 at the required angle, the latches 15 and 16 are removed from the cone-shaped grooves 13 and 14 (Figs. 1 and 2). At the same time, the swivel stop 20 is removed from the deep slot 23, which is then turned by 90 ° through the lamb 21 and inserted into the small slot 22. After

This knurling performed on the outer flange of the matrix 3, rotate the matrix and the punch with a clamp-remover in one direction or the other at the desired angle. Then, by turning it by 90 °, the stop 20 is inserted into the deep slot 23, and the latches 15

and 16, entering the grooves 13 and 14, will fix the new position of the die, the punch and the clamp-jug. Compared with known stamps, the present invention expands technological capabilities.

the use of a stamp, as it allows punching of holes and grooves located at different angles to the edge of the workpiece. The stamp provides the necessary security, since the proposed design excludes

the possibility of mismatch of the axis of the hole of the matrix with the axis of the punch while simultaneously setting them at a given angle.

Claims (2)

1. USSR author's certificate No. 366908, cl. B 21 D 28/14, 18.01.71. 2. Foygelman, GA Album of designs of universal stamping blocks and units for cold stamping. M., 1980, with. 60, FIG. 1204 (prototype).