Efficient forming method for wide-chord hollow blade

Abstract

The invention provides an efficient forming method for a wide-chord hollow blade, which comprises the following steps of: building integrated equipment integrating diffusion bonding, twisting and air expansion shape correction procedures, so that a workpiece is put on line and is heated during diffusion bonding; in the switching of the subsequent processes, the processes of first cooling off-line, equipment replacement and re-on-line and reheating in the prior art do not need to be experienced any more, so that the heating and cooling cycle times in the manufacturing process are reduced, the heating process is easier to control, the transfer of workpieces between different processes and equipment and the mold positioning and debugging process are also avoided, and the production efficiency is improved. Therefore, energy and the production period in blade forming can be greatly saved, the service life of equipment and a mold is prolonged, and efficient batch production of complex hollow blades is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of hollow blade forming technology and equipment, and in particular relates to a high-efficiency forming method for wide-chord hollow blades. Background Art

[0002] Wide chord hollow blades are one of the important components of aircraft engines and gas turbines. At present, their manufacturing is mainly achieved through two key processes: superplastic forming and diffusion bonding. In such existing technologies, multiple heating and cooling cycles are required when performing superplastic forming and diffusion bonding, making it extremely difficult to control the quality of the inside and surface of the blade products. For example, the microstructure and internal stress are prone to unevenness and degradation. If they are not discovered and handled, the performance of the blades in actual use may be unstable; the grain coarsening phenomenon that occurs after multiple heating has the risk of reducing the fatigue life and corrosion resistance of the material, resulting in insufficient reliability of the blade products. At the same time, the existing technology also has many shortcomings in terms of production efficiency and cost. For example, when performing different processes such as superplastic forming and diffusion bonding, the blanks need to be transferred between the corresponding equipment, and the replacement of the mold also requires necessary positioning and debugging, which consumes a lot of manpower and material resources. The repeated heating and cooling of multiple equipment will cause a lot of energy and time waste, and the parts and molds that are in a high temperature and high pressure environment for a long time in the equipment also need frequent maintenance, resulting in high overall manufacturing costs. Therefore, how to improve the manufacturing process of wide-chord hollow blades to improve production efficiency and reduce costs while ensuring the quality of blade products is a technical problem that urgently needs to be solved in this field. Summary of the invention

[0003] In view of this, in order to solve the technical problems existing in the art, the present invention provides a method for efficiently forming a wide-chord hollow blade, which specifically includes the following steps:

[0004] Before the processing begins, an integrated forming device including diffusion connection, blade twisting and air expansion panel correction functions is first built, so that the blade to be processed can complete the corresponding processing steps in sequence only on this device; the device is provided with an integrated mold, which is composed of a diffusion connection mold and an air expansion mold, and the diffusion connection mold and the air expansion mold are respectively provided with electric heating rods for heating the mold cavity; and a blade twisting system capable of clamping the blade and performing rotation and linear movement operations on the horizontal, vertical and vertical planes;

[0005] After the forming equipment is built, the following steps are performed:

[0006] Step 1: stacking the blank plates for manufacturing the blades and installing them in the diffusion connection mold of the forming equipment;

[0007] Step 2: Turn on the diffusion connection electric heating rod on the diffusion connection mold to heat the cavity of the diffusion mold to reach the working temperature, and then perform diffusion connection on the blank plate;

[0008] Step 3: After the diffusion connection is completed, the blade to be processed is transferred to the blade twisting system, one end of the blade is clamped and fixed by the blade twisting system, and the other end of the blade is clamped to perform multi-axis movement of the blade to realize the twisting forming operation;

[0009] Step 4: Before transferring the blade to the gas expansion mold, first use the gas expansion electric heating rod in the mold to heat the gas expansion mold cavity to the working temperature; transfer the blade after the twist forming operation to the gas expansion mold cavity, and fill the gas expansion mold cavity with high temperature and high pressure inert gas from an external source to achieve the shape correction of the blade panel;

[0010] Step 5: After the blades have been shaped by inflation, they are cooled and then removed from the forming equipment to obtain the final wide-chord hollow blades.

[0011] Furthermore, the constructed forming equipment specifically consists of a double-acting symmetrical hydraulic press, a blade twisting system and an integrated die;

[0012] The double-acting symmetrical hydraulic press is composed of a base, a support, an upper beam, a lower worktable lifting cylinder, a lower worktable, an upper worktable pressing cylinder, and an upper worktable; the base is fixedly arranged on the workstation floor, the support is fixedly erected on the base, and the upper beam is fixedly arranged on the upper end of the support; the lower worktable is installed on the base through the lower worktable lifting cylinder, and can be raised and lowered by the drive of the lower worktable lifting cylinder; the upper worktable is connected to the lower part of the upper beam through the upper worktable pressing cylinder, and can be raised and lowered by the drive of the upper worktable pressing cylinder;

[0013] The blade twisting system is used to perform a twisting operation on the blade to be processed that has completed the diffusion connection process, and is composed of a fixed side and a twisting side that are relatively arranged on both sides of the upper and lower workbenches of the base; the fixed side includes a fixed side base for fixed connection with the base and a fixed blade fixture for clamping the blade; the twisting side includes a blade twisting side chuck for clamping and twisting the blade, and a multi-axis twisting mechanism that can drive the blade twisting side chuck to move linearly in the horizontal and vertical directions and to rotate in the vertical plane;

[0014] The integrated mold integrates a diffusion connection mold and an inflation mold placed horizontally and in parallel. The diffusion connection mold and the lower mold of the inflation mold are connected to the lower workbench through the lower mold mounting base plate, and the diffusion connection mold and the upper mold of the inflation mold are connected to the upper workbench through the upper mold mounting base plate. The lower mold and the upper mold can slide horizontally relative to the lower mold mounting base plate and the upper mold mounting base plate respectively, which is used to assist the blades in transferring and switching between corresponding molds or blade torsion systems when executing different processes; the lower workbench lifting cylinder and the upper workbench pressing cylinder can provide clamping pressure for the lower mold and the upper mold respectively; the diffusion connection upper model cavity and the diffusion connection lower model cavity in the diffusion connection mold are both provided with electric heating rods for heating the mold cavity to reach the working temperature; the inflation upper model cavity and the inflation lower model cavity of the inflation mold are both provided with inflation electric heating rods.

[0015] Furthermore, the twisting operation is specifically implemented through the following multi-axis twisting mechanism on the twisting side of the blade twisting system, which consists of a horizontal axis fixing plate, a horizontal axis servo motor, a horizontal axis guide assembly, a horizontal axis screw drive assembly, a vertical axis assembly mounting plate, a vertical axis assembly fixing plate, a vertical axis guide assembly, a vertical axis screw drive assembly, a vertical axis servo motor, a vertical plane servo rotating platform, a fourth axis fixing plate, a fourth axis guide assembly, a fourth axis screw drive assembly, a fourth axis servo motor, and a blade twisting side chuck; wherein, the horizontal axis fixing plate is fixedly connected to the lower workbench, on which the horizontal axis servo motor, the horizontal axis guide assembly and the horizontal axis screw drive assembly are installed, the vertical axis assembly mounting plate is connected to the horizontal axis screw drive assembly, and the horizontal axis screw drive assembly is driven by the horizontal axis servo motor to drive the vertical axis assembly mounting plate along the horizontal axis guide assembly And it moves horizontally left and right relative to the fixed side; the vertical axis assembly fixing plate is arranged on the vertical axis assembly mounting plate facing the fixed side, on which the vertical axis guide assembly, vertical axis screw drive assembly and vertical axis servo motor are fixedly installed, the vertical plane servo rotating platform is connected to the vertical axis screw drive assembly, and the vertical axis screw drive assembly is driven by the vertical axis servo motor, and can drive the vertical plane servo rotating platform to move up and down along the vertical axis guide assembly; the vertical plane servo rotating platform can drive the fourth axis fixing plate arranged thereon to rotate on the vertical plane; the fourth axis guide assembly, fourth axis screw drive assembly and fourth axis servo motor are fixedly installed on the fourth axis fixing plate, and the torsion side chuck is connected to the fourth axis screw drive assembly, and the fourth axis screw drive assembly is driven by the fourth axis servo motor, and can drive the torsion side chuck to move linearly along the fourth axis guide assembly. The above-mentioned torsion side multi-axis torsion mechanism can drive the torsion side chuck to combine the linear motion in three directions with the motion control of a vertical plane rotation, so as to achieve a higher precision blade torsion operation.

[0016] Furthermore, the following integrated mold structure is specifically constructed to realize the transfer and mold switching of blades in different process stages: a lower mold guide plate and a lower mold sliding plate that can slide along the lower mold are fixedly arranged on the lower mold mounting base plate, an upper mold guide plate and an upper mold sliding plate that can slide along the upper mold mounting base plate are fixedly arranged, the lower mold of the diffusion connection mold and the gas expansion mold is fixedly connected to the lower mold sliding plate, and the upper mold is fixedly connected to the upper mold sliding plate; the lower mold sliding plate and the upper mold sliding plate are respectively connected to the corresponding lower mold moving cylinder and the upper mold moving cylinder, so that the diffusion connection mold and the gas expansion mold can slide horizontally under the drive of the cylinder, so as to realize the mold transfer and switching between different processes; the diffusion connection mold and the diffusion connection upper mold in the diffusion connection mold are fixedly connected. The lower mold is connected to the corresponding diffusion-connected upper mold mounting plate and diffusion-connected lower mold mounting plate through the diffusion-connected upper mold insulation plate and the diffusion-connected lower mold insulation plate respectively; the diffusion-connected upper mold mounting plate and the diffusion-connected lower mold mounting plate are respectively arranged on the upper mold sliding plate and the lower mold sliding plate; the inflatable upper mold and the inflatable lower mold of the inflatable mold in the inflatable mold are respectively connected to the corresponding inflatable upper mold mounting plate and the inflatable lower mold mounting plate through the inflatable upper mold insulation plate and the inflatable lower mold insulation plate; the inflatable upper mold mounting plate and the inflatable lower mold mounting plate are respectively arranged on the upper mold sliding plate and the lower mold sliding plate; a mold guide plate for guiding and supporting is also arranged between the inflatable upper mold and the inflatable lower mold to ensure the smoothness and accuracy of the mold opening and closing movement.

[0017] The above-mentioned method for efficiently forming wide-chord hollow blades provided by the present invention builds an integrated device that integrates diffusion connection, torsion, and inflation shaping processes, so that after the workpiece is put on the line and heated during diffusion connection, the subsequent process switching no longer needs to go through the process of "first cooling off the line, replacing the equipment, putting it back on line, and then heating" of the prior art, thereby reducing the number of heating and cooling cycles in manufacturing, making the heating process easier to control, and avoiding the transfer of the workpiece between different processes and equipment and the mold positioning and debugging process. When switching between different processes, only appropriate existing insulation conditions need to be provided, thereby greatly saving energy and production cycles in blade forming, thereby extending the service life of equipment and molds, and facilitating efficient mass production of complex hollow blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the process provided by the present invention;

[0019] Figure 2 It is a schematic diagram of the overall structure of the forming equipment used in the method of the present invention;

[0020] Figure 3 It is a schematic diagram of an optional structure of a double-acting symmetrical hydraulic press in the forming equipment used in the present invention;

[0021] Figure 4 It is a schematic diagram of an optional structure of a blade twisting system in a forming device used in the present invention;

[0022] Figure 5 This is a schematic diagram of an optional structure of an integrated mold in the forming equipment used in the present invention. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The invention provides a method for efficiently forming a wide chord hollow blade, such as Figure 1 As shown, the specific steps include:

[0027] Before the processing begins, first build Figure 2 The integrated forming equipment shown includes diffusion connection, blade twisting and air expansion panel correction functions, so that the blade to be processed can complete the corresponding processing steps in sequence only on this equipment; the equipment is provided with an integrated mold, which is composed of a diffusion connection mold and an air expansion mold, and the diffusion connection mold and the air expansion mold are respectively provided with electric heating rods for heating the mold cavity; and a blade twisting system that can clamp the blade and perform rotation and linear movement operations on the horizontal, vertical and vertical planes;

[0028] After the forming equipment is built, the following steps are performed:

[0029] Step 1: stacking the blank plates for manufacturing the blades and installing them in the diffusion connection mold of the forming equipment;

[0030] Step 2: Turn on the diffusion connection electric heating rod on the diffusion connection mold to heat the cavity of the diffusion mold to reach the working temperature, and then perform diffusion connection on the blank plate;

[0031] Step 3: After the diffusion connection is completed, the blade to be processed is transferred to the blade twisting system, one end of the blade is clamped and fixed by the blade twisting system, and the other end of the blade is clamped to perform multi-axis movement of the blade to realize the twisting forming operation;

[0032] Step 4: Before transferring the blade to the gas expansion mold, first use the gas expansion electric heating rod in the mold to heat the gas expansion mold cavity to the working temperature; transfer the blade after the twist forming operation to the gas expansion mold cavity, and fill the gas expansion mold cavity with high temperature and high pressure inert gas from an external source to achieve the shape correction of the blade panel;

[0033] Step 5: After the blades have been shaped by inflation, they are cooled and then removed from the forming equipment to obtain the final wide-chord hollow blades.

[0034] In a preferred embodiment of the present invention, the constructed forming equipment specifically consists of a double-acting symmetrical hydraulic press 100, a blade twisting system 200 and an integrated mold 300;

[0035] Among them, double-acting symmetrical hydraulic presses such as Figure 3 As shown, it is composed of a base 101, a pillar 102, an upper beam 103, a lower workbench lifting cylinder 105, a lower workbench 106, an upper workbench pressing cylinder, and an upper workbench 109; the base 101 is fixedly arranged on the workstation floor, the pillar 102 is fixedly erected on the base 101, and the upper beam 103 is fixedly installed on the upper end of the pillar 102; the lower workbench 106 is installed on the base 101 through the lower workbench lifting cylinder 105, and can be driven by the lower workbench lifting cylinder 105 to rise and fall; the upper workbench 109 is connected to the lower side of the upper beam 103 through the upper workbench pressing cylinder, and can be driven by the upper workbench pressing cylinder to rise and fall;

[0036] The blade twisting system 200 is used to perform a twisting operation on the blade 219 to be processed that has completed the diffusion connection process, and is composed of a fixed side and a twisting side that are relatively arranged on both sides of the upper and lower workbenches 106 of the base 101; the fixed side includes a fixed side base 201 for fixed connection with the base 101 and a fixed blade fixture for clamping the blade 219; the twisting side includes a blade twisting side chuck 218 for clamping and twisting the blade 219, and a multi-axis twisting mechanism that can drive the blade twisting side chuck 218 to move linearly in the horizontal and vertical directions and to rotate in the vertical plane;

[0037] The integrated mold 300 integrates a diffusion connection mold and an inflation mold placed horizontally and in parallel. The diffusion connection mold and the lower mold of the inflation mold are connected to the lower workbench 106 through the lower mold mounting base plate 301, and the diffusion connection mold and the upper mold of the inflation mold are connected to the upper workbench 109 through the upper mold mounting base plate 306. The lower mold and the upper mold can slide horizontally relative to the lower mold mounting base plate 301 and the upper mold mounting base plate 306 respectively, which is used to assist the blade 219 in transferring and switching between corresponding molds or blade twisting systems when executing different processes; the lower workbench lifting cylinder 105 and the upper workbench pressing cylinder can provide clamping pressure for the lower mold and the upper mold respectively; the diffusion connection upper model cavity 310a and the diffusion connection lower model cavity 310b in the diffusion connection mold are both provided with electric heating rods 314 for heating the mold cavity to reach the working temperature; the inflation upper model cavity 315a and the inflation lower model cavity 315b of the inflation mold are both provided with inflation electric heating rods 320. After the workpiece is heated by the diffusion connection electric heating rod 314 during the diffusion connection process, it is no longer necessary to cool until the entire processing process is completed. The gas expansion electric heating rod 320 can heat the gas expansion mold cavity to the working temperature in advance before the blade twisting is completed and the gas expansion correction process is turned on. Those skilled in the art should also know that the necessary insulation environment needs to be provided for the blades during the intervals of switching between different processes and taking the blades out of the mold or putting them in.

[0038] In a preferred embodiment of the present invention, Figure 4As shown, the twisting operation is specifically implemented by the following multi-axis twisting mechanism on the twisting side of the blade twisting system, which consists of a horizontal axis fixing plate 206, a horizontal axis servo motor 207, a horizontal axis guide assembly 208, a horizontal axis screw drive assembly 220, a vertical axis assembly mounting plate 209, a vertical axis assembly fixing plate 210, a vertical axis guide assembly 211, a vertical axis screw drive assembly 212, a vertical axis servo motor 213, a vertical plane servo rotating platform 214, a fourth axis fixing plate 215, a fourth axis guide assembly, and a fourth axis. The horizontal axis servo motor 207, the horizontal axis guide assembly 208 and the horizontal axis screw drive assembly 220 are installed on the horizontal axis fixing plate 206, and the horizontal axis screw drive assembly 220 is connected to the horizontal axis servo motor 207. The horizontal axis screw drive assembly 220 is driven by the horizontal axis servo motor 207 and can drive the vertical axis assembly mounting plate 209 to move along the horizontal axis guide. The vertical axis assembly 208 can move horizontally left and right relative to the fixed side; the vertical axis assembly fixing plate 210 is arranged on the fixed side of the vertical axis assembly mounting plate 209, on which the vertical axis guide assembly 211, the vertical axis screw drive assembly 212 and the vertical axis servo motor 213 are fixedly installed, and the vertical plane servo rotating platform 214 is connected to the vertical axis screw drive assembly 212. The vertical axis screw drive assembly 212 is driven by the vertical axis servo motor 213 to drive the vertical plane servo rotating platform 214 to move along the vertical axis guide assembly The fourth axis guide assembly, the fourth axis screw drive assembly 216 and the fourth axis servo motor 217 are fixedly installed on the fourth axis fixing plate 215, and the torsion side chuck 218 is connected to the fourth axis screw drive assembly 216. The fourth axis screw drive assembly 216 is driven by the fourth axis servo motor 217 and can drive the torsion side chuck 218 to move linearly along the fourth axis guide assembly. The above-mentioned torsion side multi-axis torsion mechanism can drive the torsion side chuck 218 to combine the linear motion in three directions with the rotational motion control in a vertical plane to achieve a higher precision blade torsion operation.

[0039] Figure 3 Also shown is an optional structure of the fixed side of the blade twisting mechanism, which consists of a blade pressure plate guide rod 202, a fixed side blade upper clamp 203, a fixed side blade mounting plate 204 and a fixed side blade lower clamp 205; wherein the blade pressure plate guide rod 202 is vertically arranged on the fixed side base 201, and passes through a mounting hole opened on the plane of the fixed side blade mounting plate 204, and is used to fix and clamp the fixed side blade upper clamp 203 and the side blade lower clamp 205 placed horizontally opposite to each other, thereby clamping one end of the blade 219 at a specific position.

[0040] In a preferred embodiment of the present invention, the following integrated mold structure is specifically constructed to realize the transfer of blades and mold switching at different process stages: Figure 5 As shown, a lower mold guide plate 303 and a lower mold sliding plate 302 that can slide along the lower mold mounting base plate 301 are fixedly provided, an upper mold guide plate 307 and an upper mold sliding plate 308 that can slide along the upper mold mounting base plate 306 are fixedly provided, the lower mold of the diffusion connection mold and the inflation mold is fixedly connected to the lower mold sliding plate 302, and the upper mold is fixedly connected to the upper mold sliding plate 308; the lower mold sliding plate 302 and the upper mold sliding plate 308 are respectively connected to the corresponding lower mold moving cylinder 305 and the upper mold moving cylinder 309, so that the diffusion connection mold and the inflation mold can slide horizontally driven by the cylinder, thereby realizing the mold transfer and switching between different processes. The diffusion-bonded upper mold and the diffusion-bonded lower mold in the diffusion-bonded mold are connected to the corresponding diffusion-bonded upper mold mounting plate 312 and the diffusion-bonded lower mold mounting plate 313 through the diffusion-bonded upper mold insulation plate 311a and the diffusion-bonded lower mold insulation plate 311b respectively; the diffusion-bonded upper mold mounting plate 312 and the diffusion-bonded lower mold mounting plate 313 are respectively arranged on the upper mold sliding plate 308 and the lower mold sliding plate 302. The inflatable upper mold and the inflatable lower mold of the inflatable mold in the inflatable mold are connected to the corresponding inflatable upper mold mounting plate 317 and the inflatable lower mold mounting plate 318 through the inflatable upper mold insulation plate 316a and the inflatable lower mold insulation plate 316b respectively; the inflatable upper mold mounting plate 317 and the inflatable lower mold mounting plate 318 are respectively arranged on the upper mold sliding plate 308 and the lower mold sliding plate 302; a mold guide plate 319 for guiding and supporting is also arranged between the inflatable upper mold and the inflatable lower mold to ensure the stability and accuracy of the mold opening and closing movement.

[0041] It should be understood that the size of the serial numbers of the steps in the embodiment of the present invention does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An efficient forming method for wide chord hollow blades, Features: The specific steps include: Before the processing begins, an integrated forming device including diffusion connection, blade twisting and air expansion panel correction functions is first built, so that the blade to be processed can complete the corresponding processing steps in sequence only on this device; the device is provided with an integrated mold, which is composed of a diffusion connection mold and an air expansion mold, and the diffusion connection mold and the air expansion mold are respectively provided with electric heating rods for heating the mold cavity; and a blade twisting system capable of clamping the blade and performing rotation and linear movement operations on the horizontal, vertical and vertical planes; After the forming equipment is built, the following steps are performed: Step 1: stacking the blank plates for manufacturing the blades and installing them in the diffusion connection mold of the forming equipment; Step 2: Turn on the diffusion connection electric heating rod on the diffusion connection mold to heat the cavity of the diffusion mold to reach the working temperature, and then perform diffusion connection on the blank plate; Step 3: After the diffusion connection is completed, the blade to be processed is transferred to the blade twisting system, one end of the blade is clamped and fixed by the blade twisting system, and the other end of the blade is clamped to perform multi-axis movement of the blade to realize the twisting forming operation; Step 4: Before transferring the blade to the gas expansion mold, first use the gas expansion electric heating rod in the mold to heat the gas expansion mold cavity to the working temperature; transfer the blade after the twist forming operation to the gas expansion mold cavity, and fill the gas expansion mold cavity with high temperature and high pressure inert gas from an external source to achieve the shape correction of the blade panel; Step 5: After the blades have been shaped by inflation, they are cooled and then removed from the forming equipment to obtain the final wide-chord hollow blades.

2. The method according to claim 1, Features: The formed equipment built specifically consists of a double-acting symmetrical hydraulic press, a blade twisting system and an integrated die; The double-acting symmetrical hydraulic press is composed of a base, a support, an upper beam, a lower worktable lifting cylinder, a lower worktable, an upper worktable pressing cylinder, and an upper worktable; the base is fixedly arranged on the workstation floor, the support is fixedly erected on the base, and the upper beam is fixedly arranged on the upper end of the support; the lower worktable is installed on the base through the lower worktable lifting cylinder, and can be raised and lowered by the drive of the lower worktable lifting cylinder; the upper worktable is connected to the lower part of the upper beam through the upper worktable pressing cylinder, and can be raised and lowered by the drive of the upper worktable pressing cylinder; The blade twisting system is used to perform a twisting operation on the blade to be processed that has completed the diffusion connection process, and is composed of a fixed side and a twisting side that are relatively arranged on both sides of the upper and lower workbenches of the base; the fixed side includes a fixed side base for fixed connection with the base and a fixed blade fixture for clamping the blade; the twisting side includes a blade twisting side chuck for clamping and twisting the blade, and a multi-axis twisting mechanism that can drive the blade twisting side chuck to move linearly in the horizontal and vertical directions and to rotate in the vertical plane; The integrated mold integrates a diffusion connection mold and an inflation mold placed horizontally and in parallel. The diffusion connection mold and the lower mold of the inflation mold are connected to the lower workbench through the lower mold mounting base plate, and the diffusion connection mold and the upper mold of the inflation mold are connected to the upper workbench through the upper mold mounting base plate. The lower mold and the upper mold can slide horizontally relative to the lower mold mounting base plate and the upper mold mounting base plate respectively, which is used to assist the blades in transferring and switching between corresponding molds or blade torsion systems when executing different processes; the lower workbench lifting cylinder and the upper workbench pressing cylinder can provide clamping pressure for the lower mold and the upper mold respectively; the diffusion connection upper model cavity and the diffusion connection lower model cavity in the diffusion connection mold are both provided with diffusion connection electric heating rods; the inflation upper model cavity and the inflation lower model cavity of the inflation mold are both provided with inflation electric heating rods.

3. The method according to claim 1, Features: The twisting operation is specifically implemented through the following multi-axis twisting mechanism on the twisting side of the blade twisting system, which consists of a horizontal axis fixing plate, a horizontal axis servo motor, a horizontal axis guide assembly, a horizontal axis screw drive assembly, a vertical axis assembly mounting plate, a vertical axis assembly fixing plate, a vertical axis guide assembly, a vertical axis screw drive assembly, a vertical axis servo motor, a vertical plane servo rotating platform, a fourth axis fixing plate, a fourth axis guide assembly, a fourth axis screw drive assembly, a fourth axis servo motor, and a blade twisting side chuck; wherein, the horizontal axis fixing plate is fixedly connected to the lower workbench, on which the horizontal axis servo motor, the horizontal axis guide assembly and the horizontal axis screw drive assembly are installed, the vertical axis assembly mounting plate is connected to the horizontal axis screw drive assembly, and the horizontal axis screw drive assembly is driven by the horizontal axis servo motor to drive the vertical axis assembly mounting plate along the horizontal axis guide assembly and relative to each other. The fixed side moves horizontally left and right; the vertical axis assembly fixing plate is arranged on the vertical axis assembly mounting plate facing the fixed side, and the vertical axis guide assembly, the vertical axis screw drive assembly and the vertical axis servo motor are fixedly installed thereon, and the vertical plane servo rotating platform is connected with the vertical axis screw drive assembly, and the vertical axis screw drive assembly is driven by the vertical axis servo motor, and can drive the vertical plane servo rotating platform to move up and down along the vertical axis guide assembly; the vertical plane servo rotating platform can drive the fourth axis fixing plate arranged thereon to rotate on the vertical plane; the fourth axis guide assembly, the fourth axis screw drive assembly and the fourth axis servo motor are fixedly installed on the fourth axis fixing plate, and the torsion side chuck is connected with the fourth axis screw drive assembly, and the fourth axis screw drive assembly is driven by the fourth axis servo motor, and can drive the torsion side chuck to move linearly along the fourth axis guide assembly.

4. The method according to claim 1, Features: Specifically, the following integrated mold structure is constructed to realize the transfer and mold switching of blades in different process stages: a lower mold guide plate and a lower mold sliding plate that can slide along the lower mold are fixedly arranged on the lower mold mounting base plate, an upper mold guide plate and an upper mold sliding plate that can slide along the upper mold mounting base plate are fixedly arranged, the lower mold of the diffusion connection mold and the gas expansion mold are fixedly connected to the lower mold sliding plate, and the upper mold is fixedly connected to the upper mold sliding plate; the lower mold sliding plate and the upper mold sliding plate are respectively connected to the corresponding lower mold moving cylinder and the upper mold moving cylinder, so that the diffusion connection mold and the gas expansion mold can slide horizontally driven by the cylinder to realize the mold transfer and switching between different processes; the diffusion connection upper model and the diffusion connection lower mold in the diffusion connection mold The inflatable upper mold and the inflatable lower mold are connected to the corresponding diffusion-connected upper mold mounting plate and the diffusion-connected lower mold mounting plate respectively through the diffusion-connected upper mold insulation plate and the diffusion-connected lower mold insulation plate; the diffusion-connected upper mold mounting plate and the diffusion-connected lower mold mounting plate are respectively arranged on the upper mold sliding plate and the lower mold sliding plate; the inflatable upper mold and the inflatable lower mold of the inflatable mold in the inflatable mold are connected to the corresponding inflatable upper mold mounting plate and the inflatable lower mold mounting plate respectively through the inflatable upper mold insulation plate and the inflatable lower mold insulation plate; the inflatable upper mold mounting plate and the inflatable lower mold mounting plate are respectively arranged on the upper mold sliding plate and the lower mold sliding plate; a mold guide plate for guiding and supporting is also arranged between the inflatable upper mold and the inflatable lower mold to ensure the smoothness and accuracy of the mold opening and closing movement.

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