CS215286B1 - Device for forging of forgings of perforated discs - Google Patents

Abstract

The purpose of the invention is to reduce material and labor costs in the production of perforated disc forgings. Until now, these forgings have been produced by open forging under forging presses. Forgings made in this way have large machining allowances due to inaccuracy and eccentricity. Production by die forging is limited by the need for die hammers of abnormal parameters. The reduction of material and labor costs is achieved by means of a device for forging perforated disc forgings, which uses a device for converting the vertical movement of the press into horizontal movement and is mounted on the movable traverses of the forging press.

Description

(54) Equipment for forging perforated disc forgings

The purpose of the invention is to reduce material and labor costs in the production of forged perforated discs. So far, these forgings have been produced by free forging under forging presses. Due to the inaccuracy and eccentricity, the forgings produced in this way have large machining allowances. Drop forging production is limited by the need for drop hammers of abnormal parameters.

Reduction of material and labor costs is realized by a forging device for forging perforated discs, which uses a device for converting the vertical movement of the press to the horizontal movement and is fixed on the movable traverse of the forging press.

The invention relates to an apparatus for forging forged perforated discs fitted with 1 not mounted, eg for power engineering.

Forgings of 1 not set discs are produced by hot forming either by free forging under forging presses or by die forging under hammers. Forgings produced by free forging have the disadvantage of large weight, which reaches two to three times the weight of the finished wheels. The large weight of forgings is caused by uneven machining allowance and eccentricity. This results in a further disadvantage, i.e. laborious mechanical treatment of the excess. Die forgings are usually dimensionally satisfactory. The disadvantage of this method is that forging large discs requires drop hammers of abnormal parameters, which most manufacturers do not have. Thus, die forging is limited to small discs.

The described drawbacks are largely eliminated by the invention using a device for converting vertical movement to horizontal movement by means of pivot levers, which consists in the lower matrices of the sliding load bearing the lower halves of the guide plates - with radially adjustable anvils and in the upper matrices The upper halves of the guide plates with radially adjustable anvils are supported by pivoting levers with a crossbar. They are also in the lower and upper. The support plates are used for the rotary bearing of the mandrel. The crossbeam is fitted with a forge.

The progress achieved by the invention is manifested in considerable savings of the inserted material and in the reduction of the labor required for forging and mechanical machining. Significant advantages are evident in the accuracy and quality of the surface of the forging discs, since the device according to the invention makes it possible to forge the discs to exact dimensions with small additions following the shape of the finished wheels.

An example of a device according to the invention is shown in the drawings, where Figure 1 shows an axial section in the left half and a view of the initial state of the device with an inserted forefront in the right half; perforated disc on both sides, fig. 3 is a four-anvil split guide plate, and FIG. 4 is a side view of the device in a final state.

Claims (3)

SUBJECT Apparatus for forging perforated disc forgings, in particular 1-sided, double-sided, forging press, utilizing the conversion of the vertical movement of a movable beam of a press to a horizontal movement by rotary levers, characterized in that the split guide plates (1) provided with anvils (2) together with The split support plates (3) are fixed in the upper matrices (7) connected by means of pivot levers (10) and the crossbar (8) to the movable traverse of the press and in the lower matrices (6). 6 halves of the split guide plates 1 and halves of the split support plates 3. The upper matrices 7 accommodate halves of the split guide plates 1 and the split support plates 3. The guide plates 1 displaceably accommodate the anvils 2 and the adjusting mechanism 12 in the radial direction. The mandrel 4 is rotatably mounted on the plates 3 on which it is supported 5. Lower en předkovek, matrix 6 are slidably mounted on the bed 9. Upper matrix 7 are connected to a swivel lever 10, mounted on the crosspiece eighth crosspiece 8 is fixed to the movable beam of the forging press 11. In the cross member is mounted kovátko 14th The device works as follows. By lifting the movable traverse of the forging press 11, the anvils 2 are allowed to be removed so that the distance between the forehead faces 2 is greater than the height of the forging 5. A mandrel 4 is inserted into the lower halves of the support plates 3. By free movement of the movable beam 11 downwards, half of the split support plates 3 and half of the split guide plates 1 abut one another. By contacting the upper matrices 7 on the lower matrices 6, they are coupled. By the following working movement of the movable cross beam 11, by means of pivoted levers 10 arranged in the crossbeam 8, arranged in parallel, via the coupled dies 6 and 7, this vertical movement is transferred to the crossbar. horizontal movement. The upper dies 7, coupled to the lower dies 6, slide along the bed 9 towards each other and carry with them the support plates 3 and the guide plates 1 with the anvils 2 adjusted according to the type of the forged disc. The anvils 2 exert pressure against each other and form a certain amount of removal of the foreheads 5. After forging, the movement of the movable traverse of the press 11 will move the anvils 2 by a length such that it is possible to rotate the forging 5 by the mandrel 4 to the next forming position. This process is repeated until the forging 5 is formed into a forging 13. At the final stage of the forging, the forging 14 covers the forging circumferentially. Upon completion of the forging by moving the movable beams of the press 11 upwardly, the upper matrices 7 lift the half of the support plates 3 and the guide plates 1 and the forging 13 with the mandrel 4 removed from the device. Possibilities of application of the invention are in all plants equipped with presses suitable forging forces and a device for converting vertical movement of the movable beam of the press to horizontal movement. » The slide (4) is rotatably supported in the split support plates (3) and passes through the split guide! plates (1). Device according to claim 1, characterized in that the anvils (2) are radially adjustable. 3. Device according to claim 1, characterized in that a replaceable forge (14) is attached to the crossbeam (8) in its axis.