SU1510977A1 - Press arrangement for upset forging of large-sized rings - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to the shaping of hollow blanks outside the press zone, and can be used in the preparation of large-sized rings. The aim of the invention is to improve the efficiency and productivity of the device. The device contains a block of cylinders (BC), vertical, driven from the traverse of the press, and horizontal, connected to the corresponding vertical cylinders. Plungers of horizontal cylinders are installed with the ability to interact with the striker device. The BC is connected to the mandrel by means of a tg and is installed on a common base with a ring turning mechanism (IPC). The device is equipped with vertical auxiliary cylinders (VVC) and hydraulic system. VVC installed in the cylinder block with the ability to interact with the crosshead press. The hydraulic system connects the VVC with the hydraulic cylinders of the IPC drive and is configured to provide discrete rotation of the rings. The device is also equipped with a frame and auxiliary horizontal cylinders. The frame is installed with the possibility of reciprocating movement relative to the BC. Some of the horizontal auxiliary cylinders are hydraulically connected with the All-Russia Exhibition Center, and another part of them is connected with the hydraulic cylinders of the MPK drive. The ring is crimped between the die and mandrel. When crimping a new section, the hammer is removed from the ring, and the ring from the mandrel is mounted on the IPC trolley. The carts with the ring are rotated to the desired angle, the ring is raised to the mandrel. The cycle is repeated until the ring is completely finished. The control of the process of disassembly occurs automatically from movements of the traverse of the press. In this case, the OCE transmits pressure to auxiliary horizontal cylinders, which are pressed onto the frame plate. The latter is moved relative to the BC. When moving the frame of the plate interact with the IPC, which ensures the rotation of the ring at a given angle. 1 hp f-ly, 8 ill.

Description

The invention relates to the processing of metals by pressure, in particular to the off-press forging of hollow billets, and can be used to obtain 3115

Institute of large rings and both gulls.

The purpose of the invention is to increase the economy and productivity of the device by using the movement of the crosshead of the press to control the mechanism of rotation of the rings.

FIG. 1 shows the device, a general view; in fig. 2 - the same, top view; in fig. 3 shows section A-A in FIG. 2; in fig. - section bb in fig, 3; in fig. 5 shows a section B-B in FIG. 3; in fig. 6 - section G-Y in FIG. 3; in fig. 7 - cyclogram of the device; in fig. 8 is a hydraulic diagram of the mechanism for rotating rings.

The device consists of a block of cylinders 1, including vertical cylinders 2, the plungers of which interact with the crosshead of press 3, and horizontal cylinders 4 connected by channels 5 with the corresponding vertical cylinders 2, the striker 6 interacting through the cross member 7 with the plungers of horizontal cylinders k, the mechanism for returning the striker in the form of hydraulic cylinders 8, mandrels 9, and 10 g connecting the cylinder block 1 with the mandrel 9. In this case, the yoke 7 is installed in the guides 11 on the cylinder block 1, and the mandrel 9 is made removable to provide anovki and removal of machined rings. A device equipped with a mechanism for rotating the rings in the form of carts 12 and 13, installed with the possibility of reciprocating motion around the axis k with the carrier 15, and the mechanism for lifting the rings 1b in the form of two parallelogram mechanisms including levers 17 connecting the base 18 s beams 19. Beams-19 are lifted by hydraulic cylinders 20, and the carriage 12 and 13 are rotated by hydraulic cylinders 21 and 22. The control of the ring turning mechanism is carried out automatically, according to movements, the crosshead of the press 3, for which in the cylinder block

1, auxiliary vertical cylinders 23 and a movable frame consisting of two plates 2k connected by columns 25 are installed. In the cylinder block 1 with a possibility of interaction with the plates 2 horizontal cylinders 26 are installed, connected by channels 27 with co-auxiliary vertical cylinders 23, nera 28, hydraulically connected

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0

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with cylinders 20 of the lifting mechanism of the rings, and cylinders 29 and 30, hydraulically connected to the cylinders 21 and 22 of the mechanism of rotation of the rings. The hydraulic coupling of the cylinders 29 and 30 to the cylinders 21 and 22 of the ring turning mechanism is carried out through the slide valve 31 with the supply lines 32 blocked, which is controlled through the cam 33, strips 3 mounted on the axes of rotation 35, adjustable by the ZB handles and connected to a movable frame of plates 2C and columns 25. The frame is returned by springs 37. The entire device is mounted on the press table 38. The described hydraulic system for controlling the rotation of the rings is applicable to other types of mechanisms for rotating the rings. For example, with roller bearings, a discrete rotation of the ring is carried out through a ratchet mechanism: (not shown), set in motion, in accordance with movements of the crosspiece of the press 3.

The device works as follows.

The device is mounted on the table of the spring 38, the table is moved until the vertical cylinders 2 are aligned with the cross-plate of the press 3. The mandrel 9 is removed from the device and the heated ring blank is placed on the raised beams 19. The mandrel 9 is mounted on the device in the holes in the trails 10. The wall of the ring It turns out between the striker 6 and the mandrel 9, the traverse of the press 3, the plungers of the vertical cylinders 2 through the channels 5 transmit the fluid pressure to the plungers of the horizontal cylinders, which through the traverse 7 press on the striker 6. The ring is crimped between smartly 6 and the mandrel 9. The course up crosspiece 3 press cylinders 8 and return the firing pin 6 is retracted from the ring, and the beam 19 is lowered. In this case, the ring is retracted from the mandrel 9 and installed on the carts 12 and 13. The cylinder 21 through the carrier 15 of the carriage 12 and 13 with the ring is rotated by the angle required for placement between the striker 6 and the mandrel 9 of the new ring section. The beams 19 are lifted, the ring is lifted from the carts 12, 13 and the ring is pressed to the gauge 9, and the carts 12 and 13 are returned to the initial position by the cylinder 22. The striker 6 compresses the new section of the ring. Further, the cycle is repeated as described.

sequence until final ring trimming. The process of arranging is controlled automatically by movements of the crosshead of the press 3. In this case, the downward movement of the crosshead, the press 3 presses on the plungers of the auxiliary vertical cylinders 23, which pass the pressure of the fluid to the auxiliary horizontal cylinders 26 through the channels 27, the cylinders 26 press on the plate 2 frames and p The cam moves relative to the cylinder block 1 by clamping the spring 37. As the frame moves, the plate interacts with the cylinders 29 and 30, which are connected to the cylinders 21 and 22 of the ring turning mechanism. In the neutral position, the spool 31 interconnects the channels connecting these cylinders, resulting in the transfer of fluid from cylinder 30 to cylinder 29, without causing the carriage 12 and 13 to rotate. The movement of the frame causes the spool 31 to be switched by bar Z the channels are disconnected and the pressure from cylinder 30 is transferred to cylinder 21 - the ring on carts 12 and 13 is rotated at a given angle. At the same time, the liquid from cylinder 22 is supplied to cylinder 29. Carts 12 and 13 are rotated during a part of idle traverse of press 3, corresponding to zone a in the cyclogram. Thereafter, plank 3 passes by cam 33 of spool 31 and the spool returns to its original position — cylinders 23 and 30 are in communication, therefore, the rotation of carriages 12 and 13 is stopped. During zone b on the cyclogram, the course of the crosspiece of the press 3 leads to pressure of the plate 2 on the cylinders - portions 28, which supply liquid to the cylinders 20 of the ring lifting mechanism, beams 19 lift the ring, pressing it to the mandrel 9. After the zone b of the crosshead 3 moves without changes to the state of mechanisms and cylinders in the zone equal to the first section of a. The idle is completed and the working stroke of the traverse of the press 3, i.e. compression of the ring wall between the striker 6 and the mandrel 9. During the entire forward stroke, the traverse of the press 3, consisting of idle and working strokes, the spool 31 was switched only in the first zone a, after which the cam of the spool 33 returned to its place and threw back the third plan 9776

ku 3 on axis 35. During the return stroke of the cross beam of the press 3, the spool 31 remains in a neutral position, since between its cam 33 and the bar 3 there is left a section corresponding to this move. During the return stroke of the presser of the press 3, the frame is moved in the opposite direction as described above under the influence of the springs 37.

The spool 31 is in the neutral position and the liquid from the cylinder

5 29 is supplied to cylinder 30. After the spool 31 is switched over by the bar 3, in the backstop area corresponding to zone a, carts 12 and 13 are rotated to their original position,

0 since fluid from cylinder 29 is supplied to cylinder 22, and from cylinder 21, liquid is supplied to cylinder 30. After that, the valve 31 returns to its original position — cylinders 29 and 30

5 are communicating again. Further movement of the crosshead of the press 3 in the zone b leads to the abduction of the plate 2 of the frame from the cylinders - portioners 28, which leads to the lowering of the beams 19 together with

0 ring. The machined ring is lowered onto the carts 12 and 13. The last section of the reverse stroke of the crosspiece of the press 3, corresponding to zone a, does not lead to changes in the state of the mechanisms and the cylinders. Then the cycle repeats - in the course of a forward traverse of the press: turning the carts 12, 13 with the ring at a given angle, lifting the ring on the beams 19, crimping the new section

d wall of the ring; on the reverse course of the traverse of the press; retraction of the striker 6 from the ring by the amount of the working stroke, rotation of the empty carts 12 and 13 to the initial position, lowering of the beams 19

g down, and the rings on the carts 12, 13, and so on.

The amount of rotation of the ring, i.e. The width of the section of the ring wall that is crimped during each cycle can be controlled by knobs 36, which change the position of the strips 3, and consequently, the moment of operation of the spool 31 for the duration of its holding in the switched state. The more part of the stroke of the crosspiece 3, the spool 31 is switched, the greater the amount of rotation of the ring.

The use of devices for raskovki large shells increases

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cost effectiveness due to the exclusion of the own device control system — the control of the set-up is conducted from the press console, as well as by the exclusion of its own source of energy for the ring turning mechanism — instead of the independent pump-battery station, the power of the press itself is used; increases the press performance by automating the ring break press as it minimizes the pause between rolling and turning operations, as well as by reducing the turn time of the ring, which is provided by high power of the press, which in the proposed device is used to turn the ring .

Claims (2)

1. Device for the press for large-sized raskovka rings containing 6jioK cylinders, including vertical cylinders, the plungers of which are installed with the possibility of interaction with the crosshead of the press, and horizontal cylinders, hydraulically connected to the corresponding vertical cylinders, mounted to interact with the plungers of horizontal cylinders, op-ipasKy, ti, connecting the mandrel with the cylinder block, the striker return cylinders and the mechanism of rotation of the rings driven by hydraulic cylinders, about the t and This is so that, in order to increase the economy and productivity of the device by using the movement of the crosshead of the press to control the mechanism of rotation of the rings, the device is equipped with auxiliary vertical cylinders installed in the cylinder block and the hydraulic 1 system connecting the auxiliary vertical cylinders with the hydraulic cylinders of the drive mechanism of rotation of the rings, while the plungers of the vertical auxiliary cylinders are installed with the ability to interact with the head plate of the press, and the guide This system is designed to provide a discrete rotation of the rings in accordance with the movements of the press beam. 2. The device according to claim 1, about tl and is that it is equipped with a frame made in the form of two plates connected by columns, installed with the possibility of reciprocating relative to the cylinder block, as well as placed in the block cylinders with the possibility of their own plunger. on the frame plates auxiliary horizontal cylinders, one of which is hydraulically connected with the auxiliary vertical cylinders, and the others - with the hydraulic cylinders of the drive mechanism for rotating rings. FIG. 13 20 17 2 23 7 I I //  // .G /four -- . 2 "25 FIG. 2 / 5 f2 9 / 3/7 a .2f yy r.g. A-A Fig.Z 5-5 1 23 ff 7. LI I 28 30 . 19 17 in-in Yu . five ) (olost PaSot uu move gd ten 6 Fig.8