Multi-point fixed clamping tool for machining doublet blades of heavy gas turbine

Abstract

The application provides a heavy-duty gas turbine double-blade processing multi-point fixed clamping tool, and relates to the field of clamping tools. The heavy-duty gas turbine double-blade processing multi-point fixed clamping tool comprises a base and a support plate arranged at the rear side of the upper end face of the base, two installation grooves are formed in the left and right sides of the support plate, a side edge clamping structure is arranged in each installation groove, a jacking hydraulic cylinder is fixedly arranged at the rear center of the support plate, the movable end of the jacking hydraulic cylinder penetrates through the support plate and is fixedly connected with a center fixing structure, and four side edge clamping structures cooperate with the center fixing structure to clamp and fix the edge plate of the double-blade workpiece. Through the four side edge clamping structures and the center fixing structure, one side edge plate of the special-shaped double-blade can be clamped and fixed, so that the edge of the other side edge plate can be conveniently polished. The device adopts multi-point clamping and fixing, can stably clamp large workpieces, and has a wide application range.

Description

Technical Field

[0001] This invention relates to the field of clamping fixture technology, specifically a multi-point fixed clamping fixture for machining heavy-duty gas turbine twin blades. Background Technology

[0002] A gas turbine is an internal combustion engine that uses a continuously flowing gas as the working fluid to drive a high-speed rotating impeller, converting the energy of the fuel into useful work. It is a type of rotating impeller-type thermal engine. Currently, gas turbine impellers commonly use a double or triple combined worm gear guide vane structure. A double-blade typically consists of an upper edge plate, a lower edge plate, and a blade body connecting the two. The machined double-blade assembly is welded together to form a single, integrated structure.

[0003] With the advancement of technology, gas turbines are becoming increasingly larger. For today's heavy-duty gas turbines, due to their larger size, the double blades are also becoming larger and heavier. Moreover, since double blades are irregularly shaped workpieces, ordinary fixtures cannot perform the corresponding clamping work during the machining process. During the machining of double blades, the edges and corners of their upper and lower edge plates need to be ground to ensure the precision of subsequent welding. Ordinary fixtures are not convenient for grinding work, so a special fixture needs to be designed to hold them and facilitate grinding. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a multi-point fixed clamping fixture for machining heavy-duty gas turbine twin blades, which solves the problems that existing ordinary fixtures cannot stably clamp heavy-duty gas turbine twin blades and facilitate blade grinding.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution: a multi-point fixed clamping fixture for machining heavy-duty gas turbine twin blades, including a base and a support plate disposed on the rear side of the upper end face of the base. Two mounting slots are provided on both sides of the support plate, and a side clamping structure is provided in each mounting slot. A lifting hydraulic cylinder is fixedly disposed at the rear center of the support plate. The movable end of the lifting hydraulic cylinder passes through the support plate and is fixedly connected to a central fixing structure. The four side clamping structures cooperate with the central fixing structure to perform multi-point clamping and fixing of the flange of the twin blade workpiece.

[0008] Side fixing plates are fixedly installed on both sides of the support plate. A bottom groove is opened inside the base located directly below the support plate. A side lifting component is installed in the bottom groove. A rear lifting structure is installed on the base located behind the support plate to assist in lifting and supporting the support plate.

[0009] The central fixing structure includes a housing. Four first sliding grooves are longitudinally formed at the inner end of the housing. A top rod is provided at the inner end of each first sliding groove. The top end of the top rod penetrates the front side of the housing, and a first spring is fixedly connected to the bottom end of the top rod. An electric cylinder placement groove is formed inside the center of the housing, and an electric cylinder is placed in the electric cylinder placement groove. Four positioning rod mounting grooves are transversely formed at the center of the housing, and both ends of the four positioning rod mounting grooves are respectively connected to the electric cylinder placement groove and the first sliding groove. A positioning rod is placed in each positioning rod mounting groove, and a second spring is provided on the rod body of the positioning rod. One end of the second spring is fixed to the rod body. Several positioning grooves are formed on the side wall of the top rod near the center of the housing, and the positioning grooves can cooperate with one end of the positioning rod.

[0010] Preferably, the housing is composed of two housing parts connected by screws, and the positioning rod mounting groove is located at the junction of the two housing parts.

[0011] Preferably, the side clamping structure includes a first mounting plate, a first hydraulic cylinder, a second hydraulic cylinder, a first slider, and a clamping buckle. The first hydraulic cylinder is fixed to one side wall of the first mounting plate, the first mounting plate is fixed to the rear wall of the support plate, the first slider is fixedly connected to the output end of the first hydraulic cylinder and slidably disposed in the inner end of the mounting groove, the second hydraulic cylinder is fixedly mounted on the rear wall of the first slider, and the output end of the second hydraulic cylinder passes through the first slider to the front end of the support plate, and the clamping buckle is fixed to the output end of the second hydraulic cylinder.

[0012] Preferably, two reinforcing slide rods are also fixedly connected to the first mounting plate. The two reinforcing slide rods are arranged on both sides of the first hydraulic cylinder, and the other end of the reinforcing slide rod passes through the first slider and is connected to the second mounting plate. The second mounting plate is fixed to the side fixing plate. Auxiliary slide grooves are also provided on both sides of the mounting groove, and the two sides of the first slider slide in cooperation within the auxiliary slide grooves.

[0013] Preferably, the clamping buckles on both sides of the support plate are symmetrically arranged, and the inner side of the clamping buckle is provided with a rubber anti-slip pad.

[0014] Preferably, the side lifting assembly includes a side threaded sleeve, a worm gear, a worm, a first motor, and a first screw. The worm is rotatably disposed between the two inner sidewalls of the bottom groove. The first motor is fixed on one side wall of the base, and the output end of the first motor is connected to one end of the worm. Two side threaded sleeves are provided, respectively fixed on the lower outer side of the side fixing plate. The first screw is fitted and connected to the inner end of the side threaded sleeve. The first screw is rotatably connected to the base through a bearing. The bottom end of the first screw passes through the base and extends to the inner end of the bottom groove. The bottom end of the first screw is fixedly connected to the worm gear, and the worm gear cooperates with the worm.

[0015] Preferably, the rear lifting structure includes a second motor, a second screw, a second groove formed on the upper surface of the base, a second slider, a third mounting plate, a support base, a support rod, a connecting rod, and a connecting plate. The second motor and the third mounting plate are fixed on the base. One end of the second screw is connected to the output end of the second motor, and the other end is connected to the side wall of the second mounting plate. The second slider is slidably fitted into the inner end of the second groove and threadedly fitted onto the second screw. The support base is fixed to the top of the second slider. The support rod is rotatably connected to the inner end of the support base. Two connecting rods are provided. One end of the connecting rod is fixedly connected to one end of the support rod, and the other end is hinged to the connecting plate. The connecting plate is fixedly connected to the rear wall of the support plate.

[0016] Preferably, the support plate has two limiting holes near its center, and each of the two limiting holes has an auxiliary limiting rod at its inner end, with the bottom end of the auxiliary limiting rod fixedly connected to the upper surface of the base.

[0017] (III) Beneficial Effects

[0018] This invention provides a multi-point fixed clamping fixture for machining heavy-duty gas turbine twin blades. It has the following advantages:

[0019] 1. The device proposed in this invention can clamp and fix one side edge plate of a double blade through the four side clamping structures and the central fixing structure, thereby facilitating the edge grinding of the other side edge plate. In use, the central fixing structure extends and presses against the middle of the edge plate, and then the four side clamping structures cooperate to pull the edge of the edge plate backward through the clamping buckle, thereby clamping and fixing one edge plate of the double blade. Then, the workpiece is lifted by the side lifting component and the rear lifting structure to facilitate subsequent processing. This design is designed to ensure stable clamping for the irregular shape of the edge plate of the double blade.

[0020] 2. The central fixing structure in this invention has a multi-point limiting function. When in use, when several push rods contact the outer center of the rim plate of the double blade, the multiple push rods will extend to different lengths through the action of springs to ensure that each push rod is in contact with the rim plate surface. At this time, by controlling the extension of the movable end of the electric cylinder, the multiple positioning rods are squeezed and the other end of the positioning rod is locked in the positioning groove on the push rod, thus fixing the position of the push rod. At this time, the central fixing structure is in complete contact with the rear side of the irregular rim plate of the double blade. Then, by controlling the clamping buckle of the side clamping structure to move backward, the rim plate can be completely clamped, ensuring that there will be no shaking during the processing.

[0021] 3. The present invention uses two sets of lifting structures on the side and rear to lift the workpiece, ensuring stable lifting and strengthening the support. At the same time, a reinforcing slide bar is set in the side clamping structure to ensure that the device can stably clamp heavy workpieces and ensure safe use. Attached Figure Description

[0022] Figure 1 This is a three-dimensional view of the structure of the present invention;

[0023] Figure 2 This is a perspective view of the structure of the present invention from another angle;

[0024] Figure 3 This is a top view of the structure of the present invention;

[0025] Figure 4 This is a bottom view of the structure of the present invention;

[0026] Figure 5 This is a cross-sectional schematic diagram of the support plate structure of the present invention;

[0027] Figure 6 This is a cross-sectional view of the central fixing structure of the present invention;

[0028] Figure 7 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 8 for Figure 2 Enlarged view of point B in the middle;

[0030] Figure 9 This is a schematic diagram of the clamping state of the double blades according to the present invention.

[0031] The components include: 1. Base; 2. Support plate; 3. Mounting groove; 4. Side clamping structure; 5. Lifting hydraulic cylinder; 6. Center fixing structure; 7. Rear lifting structure; 8. Side threaded sleeve; 9. Bottom groove; 10. Worm gear; 11. First motor; 12. Worm; 13. First screw; 14. Side fixing plate; 15. Limiting hole; 16. Auxiliary limiting rod; 401. First mounting plate; 402. Second mounting plate; 403. Reinforcing slide bar; 404. First hydraulic cylinder; 405. First slider; 406. Auxiliary slide groove; 407. 408. Second hydraulic cylinder; 601. Clamping buckle; 602. Housing; 603. First slide groove; 604. Electric cylinder placement groove; 605. Electric cylinder; 606. Push rod; 607. First spring; 608. Positioning groove; 609. Positioning rod mounting groove; 610. Second spring; 701. Second motor; 702. Second screw; 703. Second slide groove; 704. Second slider; 705. Third mounting plate; 706. Support base; 707. Support rod; 708. Connecting rod; 709. Connecting plate. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example:

[0034] like Figures 1-9 As shown, this embodiment of the invention provides a multi-point fixed clamping fixture for machining heavy-duty gas turbine twin blades, including a base 1 and a support plate 2 located on the rear side of the upper surface of the base 1. Two mounting slots 3 are provided on both sides of the support plate 2, and a side clamping structure 4 is provided in each mounting slot 3. A lifting hydraulic cylinder 5 is fixedly installed at the rear center of the support plate 2. The movable end of the lifting hydraulic cylinder 5 passes through the support plate 2 and is fixedly connected to a central fixing structure 6. The four side clamping structures 4 cooperate with the central fixing structure 6 to perform multi-point clamping and fixing of the flange of the twin blade workpiece.

[0035] like Figure 7 As shown, the side clamping structure 4 includes a first mounting plate 401, a first hydraulic cylinder 404, a second hydraulic cylinder 407, a first slider 405, and a clamping buckle 408. The first hydraulic cylinder 404 is fixed on one side wall of the first mounting plate 401, and the first mounting plate 401 is fixed on the rear wall of the support plate 2. The first slider 405 is fixedly connected to the output end of the first hydraulic cylinder 404 and is slidably disposed in the inner end of the mounting groove 3. The second hydraulic cylinder 407 is fixedly mounted on the rear wall of the first slider 405, and the output end of the second hydraulic cylinder 407 passes through the first slider 405 and extends to the front end of the support plate 2. The clamping buckle 408 is fixed on the output end of the second hydraulic cylinder 407. The first hydraulic cylinder 404 controls the lateral position of the clamping buckle 408, and the second hydraulic cylinder 407 controls the front and rear positions of the clamping buckle 408.

[0036] Two reinforcing slide rods 403 are also fixedly connected to the first mounting plate 401. The two reinforcing slide rods 403 are set on both sides of the first hydraulic cylinder 404, and the other end of the reinforcing slide rod 403 passes through the first slider 405 and is connected to the second mounting plate 402. The second mounting plate 402 is fixed on the side fixing plate 14. The two sides of the mounting groove 3 are also provided with auxiliary slide grooves 406. The two sides of the first slider 405 slide in the auxiliary slide grooves 406. The reinforcing slide rods 403 and the auxiliary slide grooves 406 make the first slider 405 more stable during movement and more stable when subjected to external force.

[0037] The clamping buckles 408 are symmetrically arranged on both sides of the support plate 2. The inner side of the clamping buckle 408 is provided with a rubber anti-slip pad, which can prevent wear on the edge of the double blade during clamping.

[0038] like Figure 6 As shown, the central fixing structure 6 includes a housing 601. Four first sliding grooves 602 are longitudinally formed at the inner end of the housing 601. An electric cylinder 604 is installed at the inner end of each first sliding groove 602. The top of the electric cylinder 604 penetrates the front side of the housing 601, and a first spring 606 is fixedly connected to the bottom end of the electric cylinder 604. An electric cylinder placement groove 603 is formed inside the center of the housing 601, and an electric cylinder 604 is installed within the electric cylinder placement groove 603. Four positioning rod mounting grooves 608 are transversely formed at the center of the housing 601, and the two ends of the four positioning rod mounting grooves 608 are respectively connected to the electric cylinder placement groove 603 and the first sliding grooves 602. A positioning rod mounting groove 608 is provided with... A positioning rod 609 is provided, and a second spring 610 is provided on the rod body of the positioning rod 609. One end of the second spring 610 is fixed to the rod body of the positioning rod 609. Several positioning grooves 607 are opened on the side wall of the electric cylinder 604 near the center of the housing 601. The positioning grooves 607 can cooperate with one end of the positioning rod 609. When the electric cylinder 604 is not working, the inner end of the positioning rod 609 extends to the inner side of the electric cylinder placement groove 603. When working, the movable end of the electric cylinder 604 extends out and pushes the positioning rod 609 back into the positioning rod mounting groove 608. The other end of the positioning rod 609 extends into the first sliding groove 602 and is locked into the positioning groove 607 on the side wall of the push rod 605, fixing the position of the push rod 605.

[0039] The housing 601 consists of two housing parts connected by screws. The positioning rod mounting groove 608 is located at the junction of the two housing parts, which facilitates the installation of the internal structure and the production and processing of the structure.

[0040] Side fixing plates 14 are fixedly installed on both sides of the support plate 2. The side fixing plates 14 are fixed to the support plate 2 by bolts. The base 1 located directly below the support plate 2 has a bottom groove 9 inside. The bottom groove 9 is equipped with a side lifting component. The base 1 located behind the support plate 2 is equipped with a rear lifting structure 7 to assist in lifting and supporting the support plate 2.

[0041] like Figure 1 , Figure 4As shown, the side lifting assembly includes a side threaded sleeve 8, a worm gear 10, a worm 12, a first motor 11, and a first screw 13. The worm 12 is rotatably mounted between the two inner side walls of the bottom groove 9. The first motor 11 is fixed to one side wall of the base 1, and the output end of the first motor 11 is connected to one end of the worm 12. Two side threaded sleeves 8 are provided, respectively fixed to the lower outer side of the side fixing plate 14. The first screw 13 is fitted and connected to the inner end of the side threaded sleeve 8. The first screw 13 is rotatably connected to the base 1 through a bearing. The bottom end of the first screw 13 passes through the base 1 and extends to the inner end of the bottom groove 9. The bottom end of the first screw 13 is fixedly connected to the worm gear 10, and the worm gear 10 cooperates with the worm 12. When the first motor 11 works, it drives the worm 12 to rotate, which in turn drives the first screw 13 to rotate through the worm gear 10, thereby causing the side threaded sleeve 8 and its connected structure to move up and down.

[0042] like Figure 8 As shown, the rear lifting structure 7 includes a second motor 701, a second screw 702, a second slide groove 703 formed on the upper surface of the base 1, a second slider 704, a third mounting plate 705, a support base 706, a support rod 707, a connecting rod 708, and a connecting plate 709. The second motor 701 and the third mounting plate 705 are fixed to the base 1. One end of the second screw 702 is connected to the output end of the second motor 701, and the other end is connected to the side wall of the third mounting plate 705. The second slider 704 slides within the second slide groove 703. The support base 706... 06 is fixed to the top of the second slider 704. The support rod 707 is rotatably connected to the inner end of the support base 706. Two connecting rods 708 are provided. One end of the connecting rod 708 is fixedly connected to one end of the support rod 707, and the other end is hinged to the connecting plate 709. The connecting plate 709 is fixedly connected to the rear wall of the support plate 2. When the second motor 701 works, it drives the second screw 702 to rotate, thereby driving the second slider 704 to move back and forth. During this process, the support rod 707 drives the connecting plate 709 and the support plate 2 to move up and down through the connecting rod 708.

[0043] like Figure 5 As shown, the support plate 2 has two limiting holes 15 near the center, and each of the two limiting holes 15 has an auxiliary limiting rod 16 at its inner end. The bottom end of the auxiliary limiting rod 16 is fixedly connected to the upper surface of the base 1, which is used to provide auxiliary support and auxiliary limiting for the support plate 2.

[0044] Working principle:

[0045] In use, the double-blade workpiece to be processed is placed on the base 1 on the front side of the support plate 2. Then, the lifting hydraulic cylinder 5 is activated, which drives the central fixing structure 6 to move forward. When the four push rods 605 contact the outer center of the blade edge plate, the four push rods 605 will extend to different lengths through the action of the first spring 606 to ensure that each push rod 605 is in contact with the edge plate surface. At this time, the movable end of the electric cylinder 604 is extended to push the positioning rod 609 back into the positioning rod mounting groove 608. The other end of the positioning rod 609 extends into the first sliding groove 602 and is locked into the positioning groove 607 on the side wall of the push rod 605 to fix the position of the push rod 605. At this time, the central fixing structure 6 is in complete contact with the rear side of the irregular edge plate of the double-blade.

[0046] Next, by controlling the first hydraulic cylinder 404, the clamping buckle 408 is moved inward until it contacts the edge of the blade. Then, by controlling the second hydraulic cylinder 407, the clamping buckle 408 is moved towards the support plate 2, so that the four clamping buckles 408 pull the blade inward, and together with the central fixing structure, the blade is clamped.

[0047] Then, the support plate 2 is moved upward by the side lifting component and the rear lifting structure 7 to lift the workpiece. Then, the edge of the other edge plate of the double blade can be ground. After completion, the other side can be switched to continue grinding.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-point fixed clamping fixture for machining twin blades of a heavy-duty gas turbine, comprising a base (1) and a support plate (2) disposed on the rear side of the upper end face of the base (1), characterized in that: The support plate (2) has two mounting slots (3) on both sides. Each mounting slot (3) is provided with a side clamping structure (4). A lifting hydraulic cylinder (5) is fixedly installed at the rear center of the support plate (2). The movable end of the lifting hydraulic cylinder (5) passes through the support plate (2) and is fixedly connected to a central fixing structure (6). The four side clamping structures (4) cooperate with the central fixing structure (6) to clamp and fix the edge plate of the double blade workpiece at multiple points. Side fixing plates (14) are fixedly installed on both sides of the support plate (2). A bottom groove (9) is opened inside the base (1) located directly below the support plate (2). A side lifting component is installed in the bottom groove (9). A rear lifting structure (7) is installed on the base (1) located behind the support plate (2) to assist in lifting and supporting the support plate (2). The central fixing structure (6) includes a housing (601). Four first sliding grooves (602) are longitudinally formed at the inner end of the housing (601). A push rod (605) is provided at the inner end of each first sliding groove (602). The top end of the push rod (605) penetrates the front side of the housing (601), and a first spring (606) is fixedly connected to the bottom end of the push rod (605). An electric cylinder placement groove (603) is formed inside the center of the housing (601), and an electric cylinder (604) is installed inside the electric cylinder placement groove (603). Four fixed grooves are transversely formed at the center of the housing (601). The four positioning rod mounting slots (608) are connected at both ends to the electric cylinder placement slot (603) and the first sliding groove (602), respectively. A positioning rod (609) is provided in the positioning rod mounting slot (608). A second spring (610) is provided on the rod body of the positioning rod (609). One end of the second spring (610) is fixed to the rod body of the positioning rod (609). A plurality of positioning grooves (607) are provided on the side wall of the top rod (605) near the center of the housing (601). The positioning grooves (607) can cooperate with one end of the positioning rod (609).

2. The multi-point fixed clamping fixture for machining heavy-duty gas turbine twin blades according to claim 1, characterized in that: The housing (601) consists of two housing parts connected by screws, and the positioning rod mounting groove (608) is located at the junction of the two housing parts.

3. The multi-point fixed clamping fixture for machining heavy-duty gas turbine twin blades according to claim 1, characterized in that: The side clamping structure (4) includes a first mounting plate (401), a first hydraulic cylinder (404), a second hydraulic cylinder (407), a first slider (405), and a clamping buckle (408). The first hydraulic cylinder (404) is fixed on one side wall of the first mounting plate (401), and the first mounting plate (401) is fixed on the rear wall of the support plate (2). The first slider (405) is fixedly connected to the output end of the first hydraulic cylinder (404) and is slidably disposed in the inner end of the mounting groove (3). The second hydraulic cylinder (407) is fixedly mounted on the rear wall of the first slider (405), and the output end of the second hydraulic cylinder (407) passes through the first slider (405) and extends to the front end of the support plate (2). The clamping buckle (408) is fixed on the output end of the second hydraulic cylinder (407).

4. The multi-point fixed clamping fixture for machining heavy-duty gas turbine twin blades according to claim 3, characterized in that: Two reinforcing slide rods (403) are fixedly connected to the first mounting plate (401). The two reinforcing slide rods (403) are arranged on both sides of the first hydraulic cylinder (404), and the other end of the reinforcing slide rod (403) passes through the first slider (405) and is connected to the second mounting plate (402). The second mounting plate (402) is fixed on the side fixing plate (14). The two sides of the mounting groove (3) are also provided with auxiliary slide grooves (406). The two sides of the first slider (405) slide in the auxiliary slide grooves (406).

5. The multi-point fixed clamping fixture for machining heavy-duty gas turbine twin blades according to claim 3, characterized in that: The clamping buckles (408) located on both sides of the support plate (2) are symmetrically arranged, and the inner side of the clamping buckle (408) is provided with a rubber anti-slip pad.

6. The multi-point fixed clamping fixture for machining heavy-duty gas turbine twin blades according to claim 1, characterized in that: The side lifting assembly includes a side threaded sleeve (8), a worm gear (10), a worm (12), a first motor (11), and a first screw (13). The worm (12) is rotatably arranged between the two inner side walls of the bottom groove (9). The first motor (11) is fixed on one side wall of the base (1), and the output end of the first motor (11) is connected to one end of the worm (12). There are two side threaded sleeves (8), which are respectively fixed on the lower side of the outer side of the side fixing plate (14). The first screw (13) is connected to the inner end of the side threaded sleeve (8). The first screw (13) is rotatably connected to the base (1) through a bearing. The bottom end of the first screw (13) passes through the base (1) and extends to the inner end of the bottom groove (9). The bottom end of the first screw (13) is fixedly connected to the worm gear (10), and the worm gear (10) cooperates with the worm (12).

7. The multi-point fixed clamping fixture for machining heavy-duty gas turbine twin blades according to claim 1, characterized in that: The rear lifting structure (7) includes a second motor (701), a second screw (702), a second slide groove (703) formed on the upper surface of the base (1), a second slider (704), a third mounting plate (705), a support base (706), a support rod (707), a connecting rod (708), and a connecting plate (709). The second motor (701) and the third mounting plate (705) are fixed on the base (1). One end of the second screw (702) is connected to the output end of the second motor (701), and the other end is connected to the third mounting plate (705). The second slider (704) is slidably fitted into the inner end of the second groove (703) and threadedly fitted onto the second screw (702). The support seat (706) is fixed to the top of the second slider (704). The support rod (707) is rotatably connected to the inner end of the support seat (706). Two connecting rods (708) are provided. One end of the connecting rod (708) is fixedly connected to one end of the support rod (707), and the other end is hinged to the connecting plate (709). The connecting plate (709) is fixedly connected to the rear wall of the support plate (2).

8. The multi-point fixed clamping fixture for machining heavy-duty gas turbine twin blades according to claim 1, characterized in that: The support plate (2) has two limiting holes (15) inside near the center, and the inner ends of the two limiting holes (15) are provided with auxiliary limiting rods (16), and the bottom end of the auxiliary limiting rods (16) is fixedly connected to the upper surface of the base (1).

Images