Pressure / sandwich coupling free-forging hydraulic device

Abstract

To provide a pressure / sandwich coupling free-forging hydraulic device capable of suppressing bent deformation of a guide pillar caused by malignancy.SOLUTION: A horizontally movable work bench is attached to a lower cross beam, and a forging blank is pressure / sandwich coupling forged along with downward motion of a device main body slider. An external slider guide pillar independent of a standing pillar of a device body is added to the lower cross beam. A lateral side pressing force and torque which are relatively large are received by the external slider guide pillar when pressure is deflected. The standing pillar of the device body executes guiding for the slider, and only serves to resist pulling without serving to balance deflection of a mounted load. Thus, a framework of the device body is stably held and, by adding and installing a four-corner balance control system, a stable operation of the slider can be guaranteed.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to the technical field of free forging, and more particularly to a pressure-clamp bonded free forging hydraulic device. [Background technology]

[0002] The typical free forging process is used for conventional hydraulic equipment with three beams and four columns. Theoretically, the forging blank must be positioned as close as possible to the center of pressure of the slider, ensuring that the upright column has a good stress state, primarily for resisting tension. However, because the forging blank has a complex shape and is subject to many deformations, it is inevitable that the hydraulic equipment will be subjected to load deflection during forging. The lateral pushing force and torque caused by the load deflection are transmitted to the guide upright column through the slider, resulting in not only tensile deformation but also curvature deformation in the upright column. This will result in severe bending and deformation of the entire equipment body, severely impacting the service life of the entire equipment.

[0003] To increase the rigidity of the equipment body to resist deformation and the hydraulic equipment's ability to resist deflection, conventional methods include modifying the cross-sectional shape of the upright column or increasing the inertia torque of the cross-section to strengthen its attachment to the equipment body. Some scholars have also proposed a four-corner balancing cylinder control system that balances the load deflection torque of the slider, which can correct the equipment body and stabilize the load deflection to some extent. However, the four-corner balancing control system cannot eliminate the lateral pressure force from the slider, and the upright column still bends sideways. Therefore, the conventional forging process still limits the eccentricity of the forging material. Mechanical analysis shows that the lateral pressure force from the slider cannot be eliminated by the internal force of the equipment body. Therefore, by providing a pressure-clamp combined forging hydraulic equipment that is independent of the external balancing structure of the upright column, pressure-clamp combined forging can be achieved. Summary of the Invention [Problem to be solved by the invention]

[0004] To solve the problems of the prior art, the present invention aims to provide a press-and-clamp open-die forging hydraulic machine that provides power from hydraulic cylinders on both sides of the worktable to realize horizontal movement of the worktable and press-and-clamp forging of the forging material in accordance with the downward movement of the main body slider. In one aspect, the present invention additionally installs external slider guide columns independent of the upright columns at the four corners of the lower cross beam. When the load is deflected, the external slider guide columns receive a relatively large lateral pushing force and torque. The upright columns of the machine body do not guide the slider or balance the deflected load, but only resist tension, thereby maintaining the stability of the machine body framework. Furthermore, the present invention additionally installs a slider four-corner balance control system to ensure stable slider operation and prevent the guide columns from bending and deforming. [Means for solving the problem]

[0005] Specifically, the press-clamp joint free forging hydraulic equipment provided by the present invention includes an upper cross beam, a lower cross beam, an upright column, a slider, an equipment main body hydraulic cylinder, a return cylinder, a guide column, a guide column pull rod, a horizontal hydraulic cylinder, a work platform, and a slide rail, the slider and the work platform are installed horizontally between the upper cross beam and the lower cross beam, the upright column is connected to the upper cross beam and the lower cross beam, the guide column is installed outside the upright column, and the upper end is temporarily connected by the guide column pull rod and the lower end is fixedly connected to the lower cross beam, the slider is installed between the guide columns and is guided via the upper guide sliding surface of the guide column, and the work platform is positioned and guided via a guide block attached to the lower cross beam, The slider moves to apply pressure downwards through the drive of the main hydraulic cylinder of the machine, and at the same time as applying pressure to the slider, the work table moves to reciprocate horizontally through the drive of a horizontal hydraulic cylinder, thereby realizing pressure-clamp bond forging, and the return cylinder is for controlling the slider to adjust the slider to a horizontal position as it returns, a slide rail is installed between the work platform and the lower crossbeam, and the slide rail is installed in a slide rail groove on the upper surface of the lower crossbeam; the work platform is installed on the slide rail; the upright column has a first end connected to the upper crossbeam and a second end connected to the lower crossbeam; the machine main hydraulic cylinder is installed on the upper crossbeam; a slider is connected to the central rod of the machine main hydraulic cylinder; the return cylinder and horizontal hydraulic cylinder are installed on the lower crossbeam; the cylinder body of the return cylinder is fixed to the lower crossbeam; the piston rod of the return cylinder is connected to the slider; the cylinder body of the horizontal hydraulic cylinder is fixed to the lower crossbeam; the plunger rod of the horizontal hydraulic cylinder is fixed to two side surfaces of the work platform; and a guide column pull rod is installed horizontally between the upper parts of the guide columns of the lower crossbeam.

[0006] Preferably, the work platform is moved horizontally left and right by being driven by two horizontal hydraulic cylinders that are horizontally and symmetrically provided.

[0007] Preferably, the slide rail is a plate-type slide rail or a roller-type slide rail.

[0008] Preferably, the roller-type slide rail includes a plurality of rollers and a holding frame, the diameter of the rollers being larger than the height of the holding frame, the plurality of rollers being mounted in parallel within the holding frame with a gap between adjacent rollers to assemble the roller-type slide rail, and the assembled roller-type slide rail is placed in the slide rail groove on the upper surface of the lower cross beam, so that the plurality of rollers come into rolling contact with the bottom surface of the slide rail groove.

[0009] Preferably, a synchronous gear arrangement is provided in each of the two front and rear guide blocks of the work table, and the synchronous gear arrangement meshes with a synchronous rack gear installed on the roller-type slide rail holding frame.

[0010] Preferably, the return cylinder is of a piston-cylinder type, and is mounted between the four corners of the upper surface of the lower crossbeam and the lower surface of the slider. High-precision movement sensors are mounted on the four corners of the slider to measure the strokes of the slider at the four corners. The high-precision movement sensors transmit the measurement data to the control system of the return cylinders and control the operation of each return cylinder in a coordinated manner, thereby realizing instantaneous level adjustment of the slider.

[0011] Preferably, the machine-main hydraulic cylinder is a double-pole joint plunger hydraulic cylinder, and the plunger of the machine-main hydraulic cylinder has a spherical pad installed at a position corresponding to the upper surface of the slider inside, and the machine-main hydraulic cylinder and the slider are connected by a central rod with spherical heads on both ends.

[0012] Preferably, only four guide posts and four guide post pull rods are provided.

[0013] Preferably, the guide columns and the lower cross beams are one of three construction types: integrally manufactured, plug-in connected, or interlocking connected.

[0014] Preferably, when specifically applied to work, the slider operates in one of the following ways: applying downward pressure at a uniform speed, applying downward pressure at a variable speed, or applying downward pressure in stages; and the worktable operates in one of the following ways: horizontally moving back and forth at a uniform speed, horizontally moving back and forth at a variable speed, horizontally moving back and forth with a fixed stroke, horizontally moving back and forth with a variable stroke, horizontally moving back and forth in stages, or horizontally moving back and forth in multiple stages. [Effects of the Invention]

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The press-clamp open forging hydraulic equipment provided by the present invention uses hydraulic cylinders on both sides of the worktable to provide power, allowing the worktable to move horizontally, and the forging material is press-clamped and forged in accordance with the downward movement of the main body slider of the equipment. By adding external slider guide columns independent of the upright columns, when the load is deflected, the external slider guide columns will bear a relatively large lateral pushing force and torque, and the main body upright columns will only play a role in resisting tension, rather than guiding the slider or balancing the load deflection, so that the framework of the main body of the equipment can be kept stable. The addition of a four-corner balance control system ensures the slider operates stably and prevents the guide columns from bending and deforming badly.

[0017] The horizontal hydraulic cylinder in the pressure and clamp combination forging hydraulic equipment of the present invention is connected to the side of the work table and pushes the work table to move when working, eliminating the need to apply pressure directly to the forging material. Moreover, when working, pressure is applied only by the horizontal hydraulic cylinder located on one side to move the work table, while the horizontal hydraulic cylinder located on the other side returns, thereby reducing redundancy in control and increasing accuracy.

[0018] The hydraulic press-clip forging equipment according to the present invention is applicable not only to the reciprocating press-clip forging process but also to the normal free forging process even when the tonnage is relatively large, and when used, there is no need to consider the adverse effects that may be caused to the equipment body due to load deviation, making it even more effective. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a front view schematically showing a roller-type hydraulic device according to the present invention. FIG. [Figure 2] 1 is a side view schematically showing a roller-type hydraulic device according to the present invention. [Figure 3] 1 is a top view schematically showing a roller-type hydraulic device according to the present invention. FIG. [Figure 4] 1 is a diagram showing a sliding plate type hydraulic device according to the present invention; [Figure 5] 1 is a three-dimensional schematic diagram showing components of a roller-type slide rail according to the present invention. FIG. [Figure 6] 1 is a three-dimensional schematic diagram showing the local assembly of a hydraulic device according to the present invention; FIG. [Figure 7a] FIG. 1 is a schematic diagram showing the lower cross beam as a whole in three dimensions. [Figure 7b] FIG. 1 is a three-dimensional schematic diagram of a plug-in lower cross beam. [Figure 7c] FIG. 1 is a three-dimensional schematic diagram of a modular lower cross beam. [Figure 8] 1 is a three-dimensional schematic diagram of a hydraulic equipment slider according to the present invention; FIG. [Figure 9a] FIG. 1 is a schematic diagram showing conventional forging, illustrating equivalent strain within a forging blank when a slider according to Example 1 of the present invention applies a downward pressure of 400 mm. [Figure 9b] FIG. 1 is a schematic diagram showing the equivalent strain inside the forging material when the slider according to Example 1 of the present invention applies a downward pressure of 400 mm, illustrating the pressure-clamp bond forging according to the present invention. [Figure 10a]FIG. 1 is a schematic diagram showing equivalent strain inside a forging material when forging according to Example 1 of the present invention is completed, and showing conventional forging. [Figure 10b] FIG. 1 is a schematic diagram showing the equivalent strain inside the forging material when forging according to Example 1 of the present invention is completed, and showing the pressure-clamp bond forging according to the present invention. [Figure 11a] FIG. 2 is a schematic diagram showing the size of dynamically recrystallized grains according to Example 1 of the present invention, illustrating conventional forging. [Figure 11b] FIG. 1 is a schematic diagram showing the size of dynamically recrystallized grains according to Example 1 of the present invention, illustrating the pressure-sandwich bond forging according to the present invention. [Figure 12a] This is a schematic diagram showing a deformation of the pressure-clamp bonded open forging hydraulic equipment forging according to the present invention, showing that the initial slider starts to apply pressure downward. [Figure 12b] FIG. 10 is a schematic diagram showing a modification of the pressure-clamp combination free forging hydraulic equipment forging according to the present invention, in which the work table moves to the left. [Figure 12c] FIG. 10 is a schematic diagram showing a modification of the pressure-clamp combination free forging hydraulic equipment forging according to the present invention, in which the work table moves to the right. [Figure 12d] 10 is a schematic diagram showing a modification of the pressure-clamp combination free forging hydraulic equipment forging according to the present invention, showing that the work table is reset. FIG. [Figure 13] 10A and 10B are schematic diagrams illustrating enlarged simulated deformations of a hydraulic device according to the present invention when a slider according to the present invention does not exert a balancing force. [Figure 14] 10A-10C are schematic diagrams illustrating magnified simulated deformations of a hydraulic device according to the present invention when a slider according to the present invention applies a balancing force. [Figure 15] FIG. 1 is a schematic diagram showing enlarged simulated deformation of a forged hydraulic machine with three girders and four columns in the prior art. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0021] As shown in Figures 1 to 8, the press-clamp joint open forging hydraulic equipment provided by the present invention includes an upper cross beam 2, a lower cross beam 12, a standing column 3, a slider 5, an equipment main hydraulic cylinder 1, a return cylinder 6, a guide column 21, a guide column pull rod 10, a horizontal hydraulic cylinder 7, and a work table 11. The slider 5 and the work table 11 are installed horizontally between the upper cross beam 2 and the lower cross beam 12, and the standing column 3 is connected to the upper cross beam 2 and the lower cross beam 12. In this embodiment, the guide column is installed outside the standing column 3 and has a guide inclined surface, and the upper end of the guide column is temporarily connected via the guide column pull rod 10.

[0022] In this embodiment, the lower ends of the four guide columns 21 are fixedly connected to the lower cross beam 12, and guide sliding plates are attached to the inside of the guide columns 21, generally with a 45-degree symmetry plane relative to the main body of the equipment. The guide plates align with the sliders 5 during operation to ensure stable operation. As shown in Figures 7a to 7c, the guide columns 21 can be one of three configurations: integrally manufactured with the lower cross beam 12, connected via a plug-in connection, or connected via a combination connection. Specifically, when processed and applied, the height of the guide columns 21 must meet the requirements for the sliders 5 to travel and operate normally. The cross-sectional shape and dimensions of the guide columns 21 must satisfy the rigidity required for the guide columns 21 to reasonably deform when the deflection force due to loading is rated. The rigidity is set to prevent automatic locking of the ball joint of the center rod of the hydraulic cylinder in the main body of the equipment. The four guide columns 21 have their upper ends temporarily fastened and connected via the four guide column pull rods 10, so that when the slider 5 is working to deflect the load, the four guide columns 21 simultaneously receive lateral pushing force and torque, strengthening the deforming rigidity of the guide columns 21 and cooperating to allow the slider 5 to operate stably.

[0023] Four return cylinders 6 and two horizontal hydraulic cylinders 7 are attached to the lower cross beams 12, respectively. The return cylinders 6 have their cylinder bodies fixed to the lower cross beams 12, the piston rods of the return cylinders 6 are connected to the sliders 5, the cylinder bodies of the horizontal hydraulic cylinders 7 are fixed to the lower cross beams 12, and the plunger rods of the horizontal hydraulic cylinders 7 are fixed to the two side surfaces of the work platform 11.

[0024] A slide rail 8 is installed between the work platform 11 and the lower cross beam 12, and the slide rail 8 is attached to a slide rail groove on the upper surface of the lower cross beam 12, with the work platform 11 being mounted on the slide rail 8. The work platform 11 is positioned and guided via a guide block 13 attached to the lower cross beam 12.

[0025] The first end of the upright column 3 is connected to the upper cross beam 2, and the second end is connected to the lower cross beam 12. In a specific embodiment, the first and second ends of the upright column 3 are connected to the upper cross beam 2 and the lower cross beam 12 via temporary fastening nuts 9, respectively. A machine-main hydraulic cylinder 1 is attached to the upper cross beam 2. A slider 5 is connected to the center rod 4 of the machine-main hydraulic cylinder 1. The slider 5 is driven by the machine-main hydraulic cylinder 1 to apply downward pressure, and the work platform 11 is driven by the horizontal hydraulic cylinder 7 to move back and forth horizontally, achieving a pressure-clamping combined forging formation. The return cylinder 6 controls the return of the slider 5 and simultaneously adjusts the slider 5 horizontally. When performing specific work, the work platform 11 moves horizontally via the drive of two plunger cylinders installed symmetrically along the horizontal direction.

[0026] In specific applications, the slide rail 8 may be configured in two ways according to different needs. As shown in FIG. 4, in one embodiment, the slide rail 8 is a plate-type slide rail or a roller-type slide rail, and the plate-type slide rail is the slide plate 18. The slide plate 18 must be made of a material with high strength, hardness, and high wear resistance. Its contact surface has a high degree of surface finish and a lubrication groove to minimize the friction coefficient and extend the service life of the slide plate. The slide plate 18 is preferably installed in the installation groove during installation.

[0027] As shown in FIG. 5 , in another embodiment, the roller slide rail 8 includes multiple rollers 19 and a support frame 20, with the diameter of the rollers 19 greater than the height of the support frame 20. All rollers 19 are mounted parallel to the support frame 20, with a certain gap between adjacent rollers 19, to assemble the roller slide rail. The assembled roller slide rail is installed in the upper slide rail groove of the lower cross beam 12, ensuring that the rollers 19 and the bottom of the slide rail groove are in rolling contact. The support frame 20 is in sliding contact with the slide rail groove on both sides, and the framework on both sides of the upper surface is equipped with a synchronous rack gear 15 at the center. The gear shaft 14 has a first end connected to the guide block 13 via a bearing and a second end meshing with the synchronous rack gears 15 on both sides of the support frame 20 via a gear 16, ensuring accurate horizontal movement of the roller slide rail. This method allows the rollers 19 to rotate to move the work platform 11 horizontally. Since the contact surface rolls and rubs, the coefficient of friction can be made extremely small, which reduces the horizontal driving force and helps to extend the service life and reduce energy consumption of the slide rail 8. In specific applications, slide rails 8 with different shapes can be selected depending on the molding force and volume of the product.

[0028] Preferably, the return cylinders 6 are piston-cylinder type, so that they can also be used as balancing cylinders. The return cylinders 6 are attached between the four corners of the upper surface of the lower crossbeam 12 and the underside of the slider 5. The slider 5 is equipped with high-precision displacement sensors at each corner to measure the stroke of the slider 5 at each corner. The high-precision displacement sensors transmit the measurement data to the control system of the four return cylinders 6, which controls the coordination of the operation of each return cylinder 6 to ensure that the slider 5 is instantly adjusted to level. The return cylinders 6 are piston-type hydraulic cylinders, and by utilizing the piston-cylinder's ability to work in both directions, they instantly apply pulling and pushing forces to the four corners of the slider 5, allowing the slider 5 to be adjusted to level.

[0029] In a specific embodiment, the machine-main hydraulic cylinder 1 is a double-pole joint plunger-type servo hydraulic cylinder with a center rod. The machine-main hydraulic cylinder 1 has a spherical pad installed inside the plunger at a position corresponding to the top surface of the slider 5, and the machine-main hydraulic cylinder 1 and the slider 5 are connected via a center rod 4 with spherical heads on both ends. When the slider 5 tilts due to load deflection, the center rod 4 is mainly used to transmit vertical pushing force to the plunger, and the torque caused by friction is relatively small, which can reduce damage and deformation of the machine body caused by sealing the hydraulic cylinder.

[0030] The main role of the four uprights 3 in the equipment is to support the upper cross beam 2 and the lower cross beam 12 and to withstand the force that resists deformation of the forging material. In the hydraulic equipment configuration of the present invention, the uprights 3 do not guide the slider 5 and are not subjected to downward pushing force and torque due to load deflection from the slider 5. Therefore, when the uprights 3 are operating, they are only under tensile stress and are not subjected to bending stress caused by load deflection. Therefore, the diameter of the uprights is smaller than that of conventional hydraulic equipment under the same pressure. Analysis of several typical hydraulic equipment cases shows that even if the diameter of the uprights 3 is reduced, to approximately 60% of the diameter of the uprights in conventional hydraulic equipment, the overall application of the hydraulic equipment is not affected.

[0031] The installation and working principle of the arrangement of the present invention will now be further explained with reference to the following examples.

[0032] First, the lower cross beam 12 is fixed to the foundation, and then four slider guide plates 17 are attached to the guide columns 21 on the lower cross beam 12. The inclination angle between the slider guide plates 17 and the symmetrical plane of the main body of the equipment is set at 45 degrees, and then the slider 5 is inserted. At this time, the slider 5 is temporarily supported on the lower cross beam 12 by an iron liner as an auxiliary part.

[0033] Next, the upright columns 3 are inserted into the upright column holes at the four corners of the lower cross beam 12 and each upright column 3 is fixed to the lower cross beam 12 with temporary tightening nuts 9. Next, the upper cross beam 2 is attached and fixed to the upper end of the upright column 3 with temporary tightening nuts 9, thereby assembling the framework of the hydraulic equipment body. Among these, the guide column 21 may be configured as an integral part of the lower cross beam 12, or may be configured as a plug-in type or an assembled type. Furthermore, the guide column 21 needs to have a certain strength and rigidity to enable stable operation of the slider 5 and to satisfy the stability of the equipment body.

[0034] Third, the cylinder body of the main hydraulic cylinder 1 is attached to the upper cross beam 2. Before attaching the plunger and center rod 4 of the hydraulic cylinder, the center rod 4 is first connected to the slider 5. Then, the slider 5 is raised so that the plunger and center rod 4 of the hydraulic cylinder enter the inner chamber of the main hydraulic cylinder 1 of the equipment, and the hydraulic cylinder parts are assembled.

[0035] Fourth, after the slider 5 is supported in a fixed position by the auxiliary iron liner, the four corner return cylinders 6 are installed, the cylinders of the four corner return cylinders 6 are fixed to the lower cross beam 12, and the piston rods of the four corner return cylinders 6 are fixed to the slider 5. After the return cylinders 6 are installed, the auxiliary iron liner is removed.

[0036] Fifth, after installing the slide rail 8 and work platform 11, different types of slide rail 8 can be selected according to the needs of the actual work situation. When installing the plate-type slide rail 18, the slide plate can be directly fixed in the positioning groove on the upper surface of the lower cross beam 12. When installing the roller-type slide rail 8, the rollers 19 are first assembled into the holding frame to form the roller-type slide rail component, and then inserted into the positioning groove on the upper surface of the lower cross beam 12. After installation of the slide rail 8 is complete, the work platform 11 is placed on the slide rail 8, and the work platform 11 is positioned by the two work platform guide blocks 13 located in front and behind and attached to the lower cross beam 12. The work platform guide blocks 13 can also be installed in advance so as to be synchronized with the gear mechanism.

[0037] Sixth, the lower cross beam 12 is used to mount the horizontal hydraulic cylinder parts 7 in the horizontal hydraulic cylinder positioning holes in the left and right directions, fix the cylinder body to the lower cross beam, and fix the plunger rod to both sides of the workbench 11.

[0038] Finally, the four guide column pull rods 10 are inserted into the upper end holes of the guide columns 21 on the lower cross beam 12, and then fastened with nuts to complete the assembly of the hydraulic equipment.

[0039] When applied to a specific task, the manner in which the slider 5 applies downward pressure and the work table 11 moves horizontally in a coordinated manner is complex and diverse. The slider 5 may move in a manner such as applying downward pressure at a uniform speed, applying downward pressure at a variable speed, or applying downward pressure in stages, and the work table 11 may move in a variety of ways, such as horizontal reciprocating movement at a uniform speed, horizontal reciprocating movement at a variable speed, horizontal reciprocating movement with a fixed stroke, horizontal reciprocating movement with a variable stroke, horizontal reciprocating movement in stages, or horizontal reciprocating movement in multiple stages.

[0040] In a specific implementation, the horizontal distance traveled by the work platform in a round trip can be calculated according to the following formula: JPEG2025141801000002.jpg5170JPEG2025141801000003.jpg17170

[0041] The distance that the slider 5 is pressed downwards once can be calculated according to the following formula: JPEG2025141801000004.jpg6170JPEG2025141801000005.jpg17170

[0042] Specifically, this is Example 1, which simulates the pressing and clamping work. In this example, a forging blank sample was used to simulate the effect of clamp forging on the microstructure. The forging blank was IN718, with an initial geometric dimension of φ1000 x 1200 mm, an initial particle size of 90 μm, a temperature of 1100°C, and a friction coefficient of 0.7 between the slider and the forging blank. The slider 5 applied downward pressure over a 500 mm stroke at a speed of 40 mm / s. Depending on the stroke size, the clamp forging process was divided into three stages: an initial stage in which the forging blank was clamped by square pressure over a 50 mm stroke; a second stage in which the blank was deformed by clamping over a 400 mm stroke; and a third stage in which pressure was applied over a 50 mm stroke to flatten the end surface. The horizontal distance traveled by the work table 11 in a round trip and the downward pressure traveled by the slider 5 can be calculated according to the following sine formula: JPEG2025141801000006.jpg14170

[0043] In order to explain the characteristics of the pressure-clip combined forging according to the present invention, a comparison will be made with a conventional forging method.

[0044] The simulation results are as follows. Figures 9a and 9b show the internal equivalent strain in the forging blank when the slider is pressed down 400 mm. As can be seen from Figure 9a, in conventional forging, the equivalent strain is distributed symmetrically around the central axis, with extremely small equivalent strain in the fan-shaped regions at the top and bottom, creating areas that are difficult to deform, while the central region is relatively deformed. As can be seen from Figure 9b, in the case of pressure-clamp combined forging, the metal flow changes in a staggered pattern, and the interior of the forging blank deforms in a complex manner due to the application of pressure and kneading, with relatively large equivalent strain in the fan-shaped regions at the top and bottom of the forging blank.

[0045] The internal equivalent strain in the forging blank after forging is shown in Figures 10a and 10b. As can be seen from Figure 10a, in the case of conventional forging, the deformation is still small at the top and bottom ends of the forging blank, but the deformation is large in the center region, resulting in uneven deformation. As can be seen from Figure 10b, in the case of press-clamp combined forging according to the present invention, the forging blank is uniformly deformed overall, and the areas that are difficult to deform, especially at the top and bottom ends, are extremely small.

[0046] Figures 11a and 11b show the size of recrystallized particles inside a forging blank after forging. As can be seen from Figure 11a, with conventional forging, recrystallized particles do not form in the difficult-to-deform areas at the top and bottom of the forging blank, but rather recrystallized areas form inside and adjacent to the difficult-to-deform areas, resulting in an uneven distribution of recrystallized particles. As can be seen from Figure 11b, with press-clamp forging, recrystallized particles change throughout the forging blank, resulting in a particularly uniform distribution of recrystallized particles. This demonstrates that the press-clamp forging process is superior to conventional forging processes and can significantly improve the overall quality of forging blanks. In the process of pressure-clamp bond forging, as shown in Figures 12a to 12d, Figure 12a is a schematic diagram showing the initial slider applying downward pressure, Figure 12b is a schematic diagram showing the work table moving to the left, Figure 12c is a schematic diagram showing the work table moving to the right, and Figure 12d is a schematic diagram showing the work table resetting.

[0047] Specifically, this is Example 2, which simulates the operation of pressure-clamped free forging hydraulic equipment.

[0048] In this example, we will explain the force characteristics of the configuration of the present invention using an example in which the main body of the equipment applies a pressure of 60 tons and the horizontal hydraulic cylinder applies a pushing force of 20 tons. Figure 13 shows the results of a mechanical simulation of the deformation of the hydraulic equipment under the boundary conditions of pressure-clamp combined forging, where P1 is 60 tons, Q is 20 tons, and P2 is 20 tons. The deformation ratios are magnified 10 times in each figure. In this case, the slider 5 is not subjected to a balancing force, and tilts to the upper left and lower right. The tilt angle is 0.18°, and the leftward deflection is 0.56 mm. The upper end faces of the two guide posts deflect by 0.62 mm, and the right-hand upper end faces deflect by 0.34 mm.

[0049] Figure 14 is a diagram simulating the deformation of the hydraulic device according to the present invention when the slider 5 applies a balancing force. In this figure, the force at P3 is 0.38t and the force at P4 is -0.38t, indicating that the slider is adjusted horizontally but moves sideways, a distance of 0.64mm. The upper end faces of the two guide columns deflect by 0.67mm, and the upper end face on the right side moves left by 0.38mm. The upright columns are in a state of tension, and no bending occurs.

[0050] Figure 15 shows an enlarged view of the simulated deformation of a conventional forged hydraulic equipment with three girders and four columns. As can be seen, the slider tilted and deflected significantly, with a tilt angle of 1.5° and a lateral movement distance of 8.9 mm. This caused a relatively large curvature in the upright columns, preventing the equipment from operating normally.

[0051] As can be seen from the above comparison, the present invention is applicable not only to the pressure-clip combined forging process but also to the free forging process even with large load deviation.

[0052] The above-described examples are merely intended to illustrate preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Those skilled in the art may make various modifications and improvements to the technical solutions of the present invention, provided that they do not deviate from the design spirit of the present invention, and all such modifications and improvements should be included in the scope of protection defined by the claims of the present invention. [Explanation of symbols]

[0053] 1. Machine-based hydraulic cylinder 2 Upper crossbeam 3 standing pillar 4 Hydraulic cylinder center rod 5 Slider 6 Return Cylinder 7 Horizontal Hydraulic Cylinder 8 Roller slide rails 9 Temporarily tighten nuts 10 Guide column pull rod 11 Workbench 12 Lower crossbeam 13 Workbench guide block 14 Gear shaft 15 Synchronous rack gear 16 Bearings 17 Slider guide board 18 Sliding plate 19 Roller 20 Retaining frame 21 Guidepost

Claims

1. Including upper cross beam, lower cross beam, rising column, slider, main hydraulic cylinder, return cylinder, guide column, guide column pull rod, horizontal hydraulic cylinder, work platform and slide rail. The slider and the work platform are installed horizontally between an upper cross beam and a lower cross beam, the standing pillars are connected to the upper cross beam and the lower cross beam, the guide pillars are installed on the outside of the standing pillars, and the upper ends are temporarily connected to the guide pillar pull rods and the lower ends are fixedly connected to the lower cross beam, the slider is attached between the guide pillars and is guided via the upper guide sliding surfaces of the guide pillars, and the work platform is positioned and guided via guide blocks attached to the lower cross beam, The slider is driven by the main hydraulic cylinder of the machine to move downwards to apply pressure, and at the same time as the slider applies pressure downwards, the work table is driven by the horizontal hydraulic cylinder to move back and forth horizontally, thereby realizing pressure and clamping combined forging, and the return cylinder is for controlling the slider to adjust the slider to a horizontal position as it returns, a slide rail is installed between the work platform and the lower crossbeam, the slide rail is installed in the slide rail groove on the upper surface of the lower crossbeam, the work platform is installed on the slide rail, the upright column has a first end connected to the upper crossbeam and a second end connected to the lower crossbeam, the machine main hydraulic cylinder is installed on the upper crossbeam, a slider is connected to the center rod of the machine main hydraulic cylinder, the return cylinder and horizontal hydraulic cylinder are installed on the lower crossbeam, the cylinder body of the return cylinder is fixed to the lower crossbeam, the piston rod of the return cylinder is connected to the slider, the cylinder body of the horizontal hydraulic cylinder is fixed to the lower crossbeam, the plunger rod of the horizontal hydraulic cylinder is fixed to two side surfaces of the work platform, and a guide column pull rod is installed horizontally between the upper parts of the guide columns of the lower crossbeam; A hydraulic press-and-clip free forging device characterized by:

2. 2. The hydraulic press and clamp combination open forging machine according to claim 1, wherein the work table is driven by two horizontal hydraulic cylinders that are horizontally and symmetrically arranged, and moves horizontally left and right.

3. 2. The hydraulic press-and-clamp free forging device according to claim 1, wherein the slide rail is a plate-type slide rail or a roller-type slide rail.

4. The roller-type slide rail includes a plurality of rollers and a holding frame, the diameter of the rollers being greater than the height of the holding frame, the plurality of rollers being mounted in parallel within the holding frame, and a gap being defined between adjacent rollers, thereby assembling the roller-type slide rail; 4. The press-clamp joint free forging hydraulic equipment according to claim 3, wherein the assembled roller-type slide rail is installed in the slide rail groove on the upper surface of the lower cross beam, so that the rollers and the bottom surface of the slide rail groove roll and come into contact with each other.

5. The press-clamp combination free forging hydraulic equipment according to claim 4, characterized in that a synchronous gear structure is provided in each of the two front and rear guide blocks of the work table, and the synchronous gear structure is meshed with a synchronous rack gear installed on the roller-type slide rail holding frame.

6. 2. The press-clamp combined open-die forging hydraulic equipment according to claim 1, wherein the return cylinder is a piston-cylinder type, and the return cylinder is installed between the four corners of the upper surface of the lower crossbeam and the lower surface of the slider, and the slider is equipped with high-precision movement sensors at the four corners for detecting the stroke of the slider at the four corners, and the high-precision movement sensors transmit the detection data to a control system of the return cylinders to control the operation of each return cylinder in a coordinated manner, thereby realizing instantaneous leveling of the slider.

7. The device-main hydraulic cylinder is a double-pole joint plunger hydraulic cylinder, and a spherical pad is installed in the plunger of the device-main hydraulic cylinder at a position corresponding to the upper surface of the slider inside the plunger, 2. The press-and-clamp joint free forging hydraulic equipment according to claim 1, wherein the equipment main body hydraulic cylinder and the slider are connected by a central rod having spherical heads at both ends.

8. 2. The hydraulic press-clamp open forging machine according to claim 1, wherein the number of the guide columns and the guide column pull rods is four.

9. The pressure and clamp joint open forging hydraulic equipment according to claim 1, wherein the guide column and the lower cross beam are one of three configuration types: integral manufacturing, plug-in connection, or combination connection.

10. The pressure and clamp combination free forging hydraulic equipment according to claim 1, characterized in that, when specifically applied to the work, the operating mode of the slider is to apply downward pressure at a uniform speed, to apply downward pressure at a variable speed, or to apply downward pressure in stages, and the operating mode of the work table is to move horizontally back and forth at a uniform speed, to move horizontally back and forth at a variable speed, to move horizontally back and forth with a fixed stroke, to move horizontally back and forth with a variable stroke, to move horizontally back and forth in stages, or to move horizontally back and forth in multiple stages.

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