SU1428528A1 - Device to press for forging out large shell - Google Patents

Abstract

The invention relates to the processing of metals by pressure, namely to the out-of-speccoBoJi assembly of large rings and shells. The goal is to expand technological capabilities by enabling the disassembly of shells of different thicknesses along the height. The press head presses the plungers of 3 vertical cylinders 2 connected to horizontal cylinders 5. At this, plunger 5 2020 9 8 5 L --- U

Description

The gages 9 of the horizontal cylinder 5 press the firing pin 7 to the mandrel 13. At the same time, the upper sliding stop 18 extends by an amount corresponding to the required tilt of the striker 7. When the striker 7 returns to its original position, the latter rests in the upper part at the sliding stop 18. This causes a turn Boyka.7 to the desired angle. The pressure source 15 automatically compensates for the lack of working fluid in the respective vertical cylinders 2. As a result, the ends

the plungers 3 are located in the same horizontal plane. In the process of inserting the shells, the inclined head deforms the workpiece located between the die 7 and the mandrel 13. When the striker 7 returns to its original position, the shell on the roller bearings rotates through a predetermined angle and the cycle repeats. The oblique position of the striker in the vertical plane of its movement provides the possibility of obtaining shells of varying thickness along the height. 3 hp f-ly, 5 ill.

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The invention relates to the processing of metals by pressure and can be used in the manufacture of rings and shells of large diameter by non-press build up using a forging press.

The purpose of the invention is the expansion of technological capabilities by ensuring the breakdown of thick shells along the height.

FIG. Figure 1 shows a device for a press for setting up large shells; in fig. 2 is a view A of FIG. one; in fig. 4 shows a section B-B in FIG. one; in fig. 5 is a section of YYD in FIG. 4. FIG. one; in fig. 5 is a section of YYD in FIG. four.

The device for the press dp of the arrangement of large shells consists of a block 1 of cylinders, including vertical cylinders 2, plungers 3 of which are driven by a brisk press 4, and horizontal cylinders 5 connected to the corresponding vertical cylinders 2 by channels 6 and installed in the block 1 several levels along its height, a striker 7, interacting through the yoke 8 with the plungers of 9 horizontal cylinders 5 and installed with the possibility of tilting in the hinges 10 located in the Fixed guides 11 on the block 1 of the cylinders and data with the striker return device 12 (hydraulic cylinders), mandrels 13, tons d 14, connecting mandrel 13 with cylinder block 1, pressure source 15, hydraulically connected to horizontal 5 and vertical 2 cylinders through valves 16 and check valves 17 ,, Sliding lugs 18, made in the form of hydraulic cylinders and installed between the cylinder block 1 and the striker 7 with the cross beam 8. In addition, the device contains a mechanism for turning the shells, made, for example, in the form of three drive roller bearings 19, Plungers 9 horizontal cylinders 5 and swings e abutments 18 are provided with spherical inserts 20. The entire device is mounted on the press table.

The device works as follows.

To manufacture a shell with a wall of different thickness along its height, for example, with a narrowing of the wall below, the following operations are necessary. The press head 4 presses the plungers 3 of the vertical cylinder 2, the fluid is pumped through the channels 6 into the horizontal shchindry 5, the plungers 9 of which press the striker 7 in the cross bar 8 to the mandrel 13. At the same time, the necessary amount of fluid is fed to the stop 18, then the cavity of the stop 18 turning off the valve from its source (not shown), while the upper stop moves by an amount, (; corresponding to the required tilt, striking. Valves 16 are closed and the source 15 of pressure can feed cylinders 2 and 5 only through check valves 17 Since the pressure in the cylinders 2 and 5 is significantly greater than the pressure of the source 15. There is no recharge. Press head 4 is lifted, the press force is removed from the plungers. 3 vertical cylinders, and hence the striker 7, and the firing pin is affected by the force from the return device. hammer 7. Striker 7 in traverse 8 moves to block 1 of cylinders and stumbles

on the upper and lower stops t8, turning the striker 7 from the crosshead 8 on the hinges 10 to the required angle. Further movement of the striker 7 is stopped.

and the force of the cylinders 12 is susceptible to a higher degree than the stops 18 (upper and lower), the plungers 9, which leads to an increase in

To return the striker to the vertical position, it is necessary to return the lugs 18 to the initial position, open the valves 16 and return the cylinder head 12 to the cylinder block by raising the press head 4. Traverse 8, having approached the block 1 1D, is pressed in the battle. In the process of lifting the press head 4, the plungers 3 of the vertical cylinders 2 track the movements of the press head. Press the head of the press with the force provided by the cylinders 12, But after starting the reversal of the striker 7, the ends of the plungers 9 of the horizontal cylinders 5 cannot remain in the same vertical plane, these plungers are extended from the cylinder block 1 to a greater or lesser degree according to the inclination of the striker 7 , as they slide into the cylinder block 1 of the crossbeam 8. The cavities of the vertical and horizontal cylinders with channels 6 which are in pairs communicating with each other have a constant volume, which leads to the fact that the ends of the plungers 3 of the vertical cylinders 2 also extend from a single horizontal plane, i.e. staggered relative to cylinder block 1. At the same time, at the first moment one of the cylinders (most advanced) is still in contact with the die 4, the pressure in cylinders 2 and 5 drops (the force of the cylinders 12 is perceived by the stops 18) and the working fluid enters from the source 15 through the check valves 17. cylinder pressure source 15. The plungers 3 under the pressure of the source 15 are lifted to contact with the die 4, i.e. their ends are again located in the same horizontal plane.

The plungers 9 of the horizontal cylinders 5 abut against the yoke 8, but the force generated by the source .15 on the area of the plungers 9 is not enough to squeeze the cylinders 12 of the striker return device. The die head 4 presses the plungers 3, and the force of the press is transmitted to the head 7. 12 cylinder re

they are pressed, the hammer is pressing on the workpiece, a forging takes place. When pressing briskly press 4 on the plungers 9 pressure in cylinders 2 and 5 and. the channels 6 are raised and the check valves 17 are closed.

To return the striker to the vertical position, it is necessary to return the stops 18 to the initial position, open the valves 16 and raise the striker of the press 4 with the cylinder 12, the striker 7 to the cylinder block. Traverse 8, approaching the block 1 1DShINDROV, push in the battle

there are pressures in them compared to plungers of horizontal cylinders of other levels. Since the valves 16 are open, the working fluid automatically from the cavities of the more open cylinders is pumped to 15 pressures, i.e. the latter will be returned the same amount of liquid (neglecting the loss) that was previously required to obtain the tilt of the striker. I

In the process of lifting the striker of the press 4 sides 7 through the device 12 return

The striker returns to its original position, the shell on the roller bearings rotates through a predetermined angle and the cycle is repeated.

The device allows

shell with different slopes of the walls around the circumference, for which it is necessary in the process of unpacking, respectively, to change the slope of the striker 7,

The advantages of the proposed device in comparison with the known ones are: the expansion of technological capabilities by providing for raskirovka raziotolishchinah height of the shells and improving the quality of the shells obtained

elimination of defects of the unwrapped shell inclined relative to the mandrel of the driver.

Claims (1)

1. An apparatus for a press for large shells, comprising a cylinder block including vertical cylinders, configured to borrowing by means of plungers with a brisk press, and horizontal cylinders installed in several levels along the height of the cylinder block, each of which is hydraulically coupled. g / J1 IB 10 20 9 if 5  / III / fuz. f fu-l.S