SU923673A1 - Apparatus for forming flat flanges on pipe branches - Google Patents

Description

The invention relates to the processing of metals by pressure and can be used when flanging tubular billets.

A device for stamping flat flanges on the pipes, containing a frame with a working cylinder., On the piston rod of which the distribution punch, the matrix, the workpiece stop and the flanging punch [1] are known.

The disadvantage of this device is low productivity due to the need to enter additional drives translational and rotational movement of the tool elements.

The purpose of the invention is to increase productivity.

This goal is achieved by the fact that the device for stamping flat flanges on the nozzles, containing a frame with a working cylinder with a punch distribution on its rod, a matrix, an emphasis of the workpiece and a punch flange, is equipped with a power frame, made in the form of two crossbars, strutted racks, one the cross member is rigidly fixed on the piston rod of the working cylinder, and on the other there is a matrix, a punch for distribution

2

mounted on the piston rod of the working cylinder, and the flanging punch is rigidly connected to the frame.

FIG. 1 shows the structural scheme of the tool; in fig. 2 the same, the distribution position; in fig. 3 - the same position at the end of the operation.

The device contains a table 1 of the press 2, on which the stop 3 is installed, preventing axial displacement of the nozzle being processed during its distribution. On the plate 4, mounted on the table 1 using stand 5,

15, a matrix 6 is fixed with a flat working surface 7 facing the stop 3. In the channel of the matrix 6, the distribution punch 8 is mounted with the possibility of axial movement with the tail of which 20 is connected with a strip 10 which is spring-loaded relative to the plate 4. On the rod 11 of the hydraulic cylinder 12 double-acting press fixed cross member 13, the rods 14

25 connected to the crossbar 15, on which the flange punch 16 is fixed annularly, moving as the rod 11 moves between the stop 3 and the die 6. Flat working surface 17 of the flange punch 16

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associated with its channel toroidal surface, the radius of which in the meridional section corresponds to the radius of curvature of the transition zone between the flange and the undeformed part of the nozzle, which should

be provided as a result of processing.

The device works as follows. .

Before installing the nozzle to be machined at the working position, the punch 8 dispensing under the action of the spring acting on the bar 10 occupies the uppermost position relative to the matrix 6. The rod 11 of the hydraulic, 5 cylinder 12 is in a position from which it is possible to move in both directions.

The pipe 18 is installed on the end of the stop 3 (Fig. 1). The hydraulic cylinder 20 is turned on to move it to the rod 11. The latter, moving downwards, acts on the shank 9 of the punch 8, which distributes the nozzle 18, as a result of which a conical collar is formed at the end 25, the diameter of which is larger than the diameter of the working surface of the punch 8 ( fyg. 2).

Upon reaching the design distribution degree, the hydraulic cylinder 12 is reversed — the rod 11 is drawn in, which leads to the return of the punch 8 to the initial position and the lifting of the cross member 15, and hence the punch. 16 flanging. Influencing the collar obtained at 35 distribution, the flange punch lifts the nozzle to the matrix 6. After the pairing of the end, subjected to the distribution of the end of the nozzle with the matrix 6, begins its flaring with simultaneous calibration of the transition zone between the collar and the non-deformed

partly by crimping the toroidal surface of the flange punch 16. The processing ends with a power closure between the flanging punch 16, on the one hand, and the die 6 and the distribution punch 8, on the other hand, resulting in a flat flange between them, coupled with the undeformed part of the nozzle of the transition zone of a given curvature (Fig. 3). Drive hydrocylin core 12 switch on the advancement of the rod 11 to its original position, after which the drive is disconnected and remove the flanged nozzle.

The economic effect of the introduction of the proposed device is achieved by increasing productivity.

Claims (1)

Claim Device for stamping flat flanges on the nozzles, containing a frame with a working cylinder with a punch distribution on its rod, a matrix, an emphasis of the workpiece and a punch flanging, characterized in that, in order to improve performance, it is equipped with a power frame, made in the form of two crossbars, tightened racks, with one cross member rigidly mounted on the piston rod of the working cylinder, and the other mounted matrix, while the punch distribution is fixed on the piston rod of the working cylinder, and the punch flanging rigidly connected to the village Noah.