SU694257A1 - Apparatus for punching holes in the peripheral surface of hollow workpiece - Google Patents

Description

one

The invention relates to a tooling for the pressure treatment of hollow parts, in particular for punching holes in the lateral surface of hollow parts.

A device is known for punching holes in the side surface of a hollow part, comprising a fixed body in which a die is fixed and mounted with the possibility of reciprocating along the radii of the mandrel-matrips punches. The punches are equipped with a reciprocating mechanism, which contains a rotating ring associated with the drive, and rollers equipped with cams and stands. Swivel ring has radial grooves holes. The cams enter into the grooves of the ring, and the protrusions of the cams enter the holders of the punches and, when turning the rings, impart reciprocating movement to the punches 1.

A disadvantage of the known device is the relative complexity of its design and the complexity of the manufacture of the mechanism for moving the punch.

The aim of the invention is to simplify the design and manufacture of the device.

This goal is achieved by placing the knots in the cavity of the rotary ring, installing between the non-working ends of the punches and the inner surface of the ring of balls, making recesses on the inner surface of the ring that have the shape of segments in the cross section of the ring, and installing springs pressing the punches in the off position to the surfaces of the hollows .

FIG. 1 shows a device, a longitudinal section; in fig. 2 - section AA

FIG. one.

The horizontally located mandrel 1 is rigidly fixed to the stand of the housing 2 with the help of a nut 3, ring 4, pins 5. Between the supports 6 of the housing 2 s

using screws 7, nuts 8, and a tongue 9, a punch holder is secured — a holder 10, in whose guides 11 there are noansons 12 with springs 13. On the punch holder 10, using sleeves 14, a rotary ring 15 is installed, having recesses 16, which press the balls 17 in the guides 11 of the punch holder 10. In the cross section, the rings of the ring have the shape of segments. The rotary ring 15 is connected by means of the pull 18 to the press ram. On the mandrel-matrix installed part 19.

The device works as follows.

In the initial state, the balls 17 are located at 16 k segment segments at the bottom (zltsa 15, supported by spring-loaded punches 12. A detail is worn on the mandrel until it rests on the rack 6.

When the press slider moves (not shown in fig.), The ha ha 18 moves the rotary ring 15, which, when turned, acts on the sharps 17. Balls, the exit 113 of the ring grooves, move the pu-sions 12, which pierce the piece 19. With the reverse slide of the press the ring 15 returns to its original position, the balls 17 occupy the place in the recesses 16 of the ring 15. In this case, the punches 12 under the action of the springs 13, returning to the initial position, release the part.

The proposed device has the simplicity of design, which provides an uncomplicated technology for the manufacture of elements of the device, ease of assembly and, as a result, low labor intensity; reliability; provides increased productivity.

When installing an adjustable stop on the rack 6 or in the mandrel-matrix 1, it is possible to irobit holes that are located in several rows along the axis of the part.

The proposed device is operable with its crepepia both in a horizontal position and in a vertical position (in Figs. 1 and 2, the device’s horizontal position is indicated).

When mounting the device in a horizontal position, punching of holes in the side surfaces of long pieces is provided.

Due to the proposed construction of the reciprocating motion of the punches, the punching of holes in the parts is provided by the press slide process, which is considerably smaller than in known devices. In addition, when fastening the device in a horizontal position, security is observed (JСт of work.

Formula of invention

A device for punching holes in the side surface of the hollow part, comprising a fixed housing in which the mounting-matrix n is mounted with

Possibility of reciprocating movement along radii of mattress-matte punches equipped with reciprocating actuators, including engine-related

rotary ring, characterized in that, in order to simplify the design and manufacture of the device, the punches are placed in the cavity of the rotary ring, spheres are installed between the inner surface of the ring and the working ends of the tubs, on the inner surface of the ring there are recesses in the ring cross section of the ring, and on the punches there are springs which hold them inoperative to the surface of the recesses.

Sources of information taken into account in the examination 1. USSR author's certificate

No. 359084, cl. B 21D 28/28, B 21D 37/00, 12.28.70.

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