Turbine rotor wax mold splicing tool

Abstract

The application provides a turbine rotor wax mold splicing tool and relates to the technical field of investment casting.The first clamping protrusion and the second clamping protrusion are arranged on the top surface of the blade positioning disc in a radial direction, the first clamping protrusion and the second clamping protrusion are respectively provided with a first V-shaped clamping groove and a second V-shaped clamping groove, and the first V-shaped clamping groove and the second V-shaped clamping groove are respectively used for supporting the near-root cross section of the unit blade and the near-tip cross section of the unit blade.The V-shaped clamping groove structure can hold the blade and is not easy to slide, and is more firm.The blade mounting angle positioning pin is used for supporting the blade body and the blade basin of the unit blade, and the unit blade is positioned in the axial direction and the angular direction.The edge plate parting surface of the unit blade is located on the side surface of the radial positioning disc, the contact area is large, the positioning is more reliable, the blade mounting angle positioning pin can move in the vertical direction, is suitable for unit blades with different blade mounting angles, the radial positioning disc can move in the vertical direction, and is suitable for unit blades with different radial dimensions.

Description

Technical Field

[0001] This invention relates to the field of investment casting technology, and in particular to a tooling for assembling a turbine rotor wax mold. Background Technology

[0002] Turbine rotors and turbine guide vanes are key components of aerospace engines. From the perspective of component structure, these products have typical structures such as "blade + inner / outer ring" or "blade + disk / disc shaft", and are mostly integrally formed by high-temperature alloy precision casting.

[0003] Currently, the production of turbine rotor and turbine guide vane castings mainly adopts a wax mold assembly process. There are two main types of tooling and fixtures used for assembling the wax molds of turbine rotors and turbine guide vanes, as follows:

[0004] 1) Six-point positioning splicing fixture: This solution mainly uses six positioning points on the blade and flow channel surface to position the blade. During positioning, the operator needs to hold the blade by hand and position it on the wax model of the fixture. During splicing, the operator needs to hold the blade by hand to ensure that the unit blade is in contact with the six points. Then, the fixture is rotated to splice the next blade. The blades are bonded together by wax pouring. This splicing fixture requires assembly jigs to form the shape, which requires high operator skill. Different operators may produce wax model parts with inconsistent dimensions due to different splicing techniques. The uniformity of blade distribution (circumferential indexing) spliced ​​by this fixture will be affected by the unit blade, which will cause cumulative errors and eventually lead to the blade position deviation.

[0005] 2) Ejector-type assembly fixture: This solution mainly uses the inner ring cylinder, the inner / outer ring end face of the blade, and the outer ring ejector pin for positioning. The wax model of the assembled parts has high dimensional consistency and the assembly positioning is reliable. However, if the flow channel size of the casting produced by this solution is not suitable, or the blade installation angle (blade twist) is not suitable, the assembly fixture cannot be adjusted and must be remade.

[0006] However, in the actual casting production of turbine guide vanes and turbine rotor castings, especially during the trial production of new products, the dimensions of the flow channels and the blade torsion angle (throat area) of the turbine guide vanes and turbine rotor castings are often unsuitable and do not meet the requirements of the drawings. Adjustments need to be made based on the trial production results. However, the currently widely used ejector-type wax mold splicing tooling cannot achieve this adjustment. The tooling can only be repaired or remade, which makes it impossible to conduct timely production verification and delays the research and production progress. Summary of the Invention

[0007] The purpose of this invention is to provide a turbine rotor wax mold splicing fixture to alleviate the technical problems existing in the prior art, such as the inability to adjust the ejector-type wax mold splicing fixture, the need to repair or remake the fixture when encountering castings of unsuitable size, and the inability to conduct timely production verification.

[0008] The turbine rotor wax mold splicing fixture provided by the present invention includes: a blade positioning disk and a radial positioning disk;

[0009] The blade positioning disk is annular and surrounds the radial positioning disk;

[0010] The top surface of the blade positioning disk is provided with a first locking protrusion and a second locking protrusion at radial intervals. The top surface of the first locking protrusion is recessed to form a first V-shaped locking groove, which is used to support the near-root section of the unit blade. The top surface of the second locking protrusion is recessed to form a second V-shaped locking groove, which is used to support the near-tip section of the unit blade.

[0011] The blade positioning disc is provided with a blade mounting angle positioning pin, which is used to support the blade body and blade base of the unit blade. The blade mounting angle positioning pin is configured to be able to move in the vertical direction to adjust the contact position between the blade mounting angle positioning pin and the unit blade.

[0012] The radial positioning disk is frustum-shaped, and its side surface is used to abut against the parting surface of the edge plate of the unit blade. The radial positioning disk is configured to move in the vertical direction to adjust the contact position between the side surface of the radial positioning disk and the unit blade.

[0013] In an optional implementation,

[0014] The turbine rotor wax mold splicing fixture also includes an upper support ring, an upper support block, a positioning pin limiting ring, a positioning pin adjusting ring, a positioning pin support ring, and a lower adjusting screw.

[0015] The upper support ring is located below the blade positioning disk, and the upper support ring and the blade positioning disk are connected by the upper support block;

[0016] The positioning pin limiting ring, positioning pin adjusting ring, and positioning pin support ring are stacked on the upper support ring from top to bottom, and the end of the blade mounting angle positioning pin away from the unit blade is connected to the positioning pin limiting ring.

[0017] The lower adjusting screw is threadedly connected to the upper support ring, and the upper end of the lower adjusting screw abuts against the positioning pin support ring. The lower adjusting screw is used to push the positioning pin support ring so that the blade mounting angle positioning pin moves up and down together with the positioning pin limiting ring, the positioning pin adjusting ring and the positioning pin support ring.

[0018] In an optional implementation,

[0019] The turbine rotor wax mold splicing fixture also includes a lower adjusting support screw;

[0020] The lower adjusting support screw passes through the upper support ring and the positioning pin support ring from bottom to top and extends into the positioning pin adjusting ring. The lower adjusting support screw is threadedly connected to the positioning pin adjusting ring. The rotating sleeve connected to the lower adjusting support screw abuts against the bottom surface of the upper support ring to restrict the vertical movement of the lower adjusting support screw.

[0021] In an optional implementation,

[0022] The turbine rotor wax mold assembly fixture also includes a fixed plate and an upper adjusting screw;

[0023] The fixed plate is located below the radial positioning disc, and the fixed plate is connected to the blade positioning disc by connecting positioning pins and connecting bolts;

[0024] The upper adjusting screw passes through the radial positioning disk and the fixed disk in sequence, and the upper adjusting screw is threadedly connected to the radial positioning disk and the fixed disk respectively. The upper adjusting screw is configured to drive the radial positioning disk to move by screwing.

[0025] In an optional implementation,

[0026] The turbine rotor wax mold splicing fixture also includes a limit adjustment spring;

[0027] The bottom of the radial positioning disk is provided with a spring mounting groove, the limiting adjustment spring is disposed in the spring mounting groove, one end of the limiting adjustment spring is connected to the radial positioning disk, and the other end of the limiting adjustment spring is connected to the fixed disk. The limiting adjustment spring is configured to enable the radial positioning disk and the fixed disk to have a tendency to move away from each other.

[0028] In an optional implementation,

[0029] The turbine rotor wax mold assembly tooling also includes positioning columns;

[0030] The positioning post passes through the radial positioning disk, and the bottom end of the positioning post is fixed on the fixed disk. The positioning post is used to limit the direction of movement of the radial positioning disk.

[0031] In an optional implementation,

[0032] The turbine rotor wax mold assembly fixture also includes an upper auxiliary adjusting screw;

[0033] The upper auxiliary adjusting screw passes through the radial positioning disk and is threadedly connected to the radial positioning disk. The bottom end of the top cap of the upper auxiliary adjusting screw abuts against the top surface of the radial positioning disk.

[0034] In an optional implementation,

[0035] The turbine rotor wax mold assembly tooling also includes an ejector block and a rotating ring;

[0036] The ejector block passes through the upper support ring, the positioning pin support ring, the positioning pin adjustment ring and the positioning pin limiting ring from bottom to top, and the top of the ejector block is located in the gap between the blade positioning disk and the radial positioning disk. The ejector block is used to eject the wax mold formed by the blade positioning disk.

[0037] The bottom of the ejector block is provided with an inclined elongated hole, and a sliding rod is passed through the rotating ring. The sliding rod extends into the inclined elongated hole, and the rotating ring is configured to rotate so that the sliding rod pushes the ejector block up and down in the inclined elongated hole.

[0038] In an optional implementation,

[0039] The turbine rotor wax mold assembly fixture also includes a lower support block;

[0040] The upper support ring is supported at the top of the lower support block. The lower support block is circular in shape, and a stepped surface is formed on the inner wall of the lower support block. The rotating ring is supported at the top of the stepped surface.

[0041] In an optional implementation,

[0042] The turbine rotor wax mold assembly fixture also includes a lower support ring;

[0043] The lower support ring supports the lower support block, and the bottom of the lower support ring is provided with a support foot with a pulley.

[0044] The turbine rotor wax mold assembly fixture provided by this invention features a first and a second locking protrusion arranged radially at intervals on the top surface of a blade positioning disc. These protrusions are respectively equipped with a first V-shaped groove and a second V-shaped groove, used to support the near-root section and near-tip section of the unit blade, respectively. The V-shaped groove structure holds the blade in place, preventing slippage and ensuring greater stability. The blade mounting angle positioning pin supports the blade body and blade base, thus completing the axial and angular positioning of the unit blade. The blade's edge plate parting surface rests against the side of the radial positioning disc, resulting in a large contact area and more reliable positioning. Furthermore, because the blade mounting angle positioning pin can move vertically, it is suitable for unit blades with different mounting angles. The radial positioning disc can also move vertically, making it suitable for unit blades with different radial dimensions. This alleviates the technical problem of existing pin-type wax mold assembly fixtures, which cannot be adjusted and require tooling repair or remanufacturing for unsuitable castings, hindering timely production verification. Attached Figure Description

[0045] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0046] Figure 1 This is a schematic diagram of the overall structure of the turbine rotor wax mold splicing fixture provided in an embodiment of the present invention;

[0047] Figure 2 This is a cross-sectional view of the overall structure of the turbine rotor wax mold splicing tooling provided in an embodiment of the present invention;

[0048] Figure 3 A schematic diagram of the overall structure of the turbine rotor wax mold splicing tooling provided in an embodiment of the present invention from another perspective;

[0049] Figure 4 This is a schematic diagram of the installation of the rotating ring, ejector block, slide bar, fixing plate and ejector ring in the turbine rotor wax mold splicing tooling provided in the embodiment of the present invention;

[0050] Figure 5 This is a schematic diagram of the structure of a unit blade in the turbine rotor wax mold splicing tooling provided in an embodiment of the present invention.

[0051] Icons: 1-Blade positioning disc; 2-Radial positioning disc; 3-First snap-fit ​​protrusion; 4-Second snap-fit ​​protrusion; 5-Blade mounting angle positioning pin; 6-Upper support ring; 7-Upper support block; 8-Positioning pin limit ring; 9-Positioning pin adjusting ring; 10-Positioning pin support ring; 11-Lower adjusting screw; 12-Lower adjusting support screw; 13-Fixed disc; 14-Upper adjusting screw; 15-Connecting positioning pin; 16-Connecting bolt; 17-Limit adjustment spring; 18-Spring mounting slot; 19-Positioning pin; 20-Upper auxiliary adjusting screw; 21-Ejection block; 22-Rotating ring; 23-Slanted elongated hole; 24-Slide rod; 25-Lower support block; 26-Lower support ring; 27-Support leg with pulley; 28-Rotating handle; 29-Upper limit pin; 30-Lower limit pin; 31-Ejection ring; 32-Guide pin; 33-Guide spring; 100-Unit blade; 110-Near root section; 120-Near tip section; 130-Blade body and blade base; 140-Bladder parting surface. Detailed Implementation

[0052] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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.

[0053] like Figure 1 , Figure 2 , Figure 5 As shown, the turbine rotor wax model splicing fixture provided in this embodiment includes: a blade positioning disk 1 and a radial positioning disk 2; the blade positioning disk 1 is annular and surrounds the radial positioning disk 2; the top surface of the blade positioning disk 1 is radially spaced with first locking protrusions 3 and second locking protrusions 4, the first locking protrusions 3 and second locking protrusions 4 have the same structure, and multiple first locking protrusions 3 and multiple second locking protrusions 4 are provided, the multiple first locking protrusions 3 are arranged circumferentially, and the multiple second locking protrusions 4 are arranged in a circular pattern. They are also arranged in a circle. The circumferential diameter of the multiple first snap-fit ​​protrusions 3 is smaller than the circumferential diameter of the multiple second snap-fit ​​protrusions 4. The first snap-fit ​​protrusions 3 and the second snap-fit ​​protrusions 4 located in the same radial direction jointly support a unit blade 100. The top surface of the first snap-fit ​​protrusion 3 is recessed to form a first V-shaped groove. The first V-shaped groove is used to support the near-root section 110 of the unit blade 100. The top surface of the second snap-fit ​​protrusion 4 is recessed to form a second V-shaped groove. The second V-shaped groove is used to support the near-tip section 120 of the unit blade 100.

[0054] The blade positioning disc 1 is provided with blade mounting angle positioning pins 5. The blade mounting angle positioning pins 5 are used to support the blade body and blade base 130 of the unit blade 100. Multiple blade mounting angle positioning pins 5 are provided. The number of multiple blade mounting angle positioning pins 5 is the same as the number of the first snap-fit ​​protrusion 3, the second snap-fit ​​protrusion 4 and the unit blade 100. Furthermore, the blade mounting angle positioning pins 5 are configured to be able to move in the vertical direction to adjust the contact position between the blade mounting angle positioning pins 5 and the unit blade 100.

[0055] The radial positioning disk 2 is frustum-shaped, and the side of the frustum-shaped radial positioning disk 2 has an inclined surface. The inclined surface is adapted to the edge plate parting surface 140 of the unit blade 100. The edge plate parting surface 140 of the unit blade 100 abuts against the side of the radial positioning disk 2, and the radial positioning disk 2 is configured to be able to move in the vertical direction to adjust the contact position between the side of the radial positioning disk 2 and the unit blade 100.

[0056] It should be noted that this tooling is applicable to turbine rotors and also to turbine guide vanes.

[0057] The turbine rotor wax mold splicing fixture provided in this embodiment uses a first locking protrusion 3 and a second locking protrusion 4 arranged radially at intervals on the top surface of the blade positioning disk 1. The first locking protrusion 3 and the second locking protrusion 4 are respectively provided with a first V-shaped groove and a second V-shaped groove, which are used to support the near-root section 110 and the near-tip section 120 of the unit blade 100, respectively. The blade is supported by the V-shaped groove structure, which makes it less prone to slippage and more secure. The blade mounting angle positioning pin 5 is used to support the blade body and blade head 130 of the unit blade 100. The unit blade 100 is axially and angularly supported. The positioning is now complete. The edge plate parting surface 140 of the unit blade 100 rests on the side of the radial positioning disk 2, resulting in a large contact area and more reliable positioning. Furthermore, since the blade mounting angle positioning pin 5 can move in the vertical direction, it is suitable for unit blades 100 with different blade mounting angles. Since the radial positioning disk 2 can move in the vertical direction, it is suitable for unit blades 100 with different radial dimensions. This alleviates the technical problem in the prior art where the ejector-type wax mold splicing tooling cannot be adjusted, and when encountering unsuitable castings, the tooling must be repaired or remade, making it impossible to conduct timely production verification.

[0058] Based on the above embodiments, in optional embodiments, the turbine rotor wax mold splicing fixture provided in this embodiment further includes an upper support ring 6, an upper support block 7, a positioning pin limiting ring 8, a positioning pin adjusting ring 9, a positioning pin support ring 10, and a lower adjusting screw 11; the upper support ring 6 is located below the blade positioning disk 1, and the upper support ring 6 and the blade positioning disk 1 are connected by the upper support block 7, that is, the upper support block 7 overlaps on the upper support ring 6, and the upper support block 7 supports the blade positioning disk 1.

[0059] Positioning pin limiting ring 8, positioning pin adjusting ring 9, and positioning pin support ring 10 are stacked sequentially from top to bottom on the upper support ring 6. The end of the blade mounting angle positioning pin 5 away from the unit blade 100 is connected to the positioning pin limiting ring 8. Specifically, the bottom end of the positioning pin limiting ring 8 has an upwardly recessed mounting groove. The cap edge of the bottom end of the blade mounting angle positioning pin 5 is placed in the mounting groove. When the positioning pin support ring 10 moves up and down, the positioning pin support ring 10 pushes the positioning pin limiting ring 8 and the positioning pin adjusting ring 9 to move up and down together, thereby adjusting the height position of the blade mounting angle positioning pin 5.

[0060] The lower adjusting screw 11 is threadedly connected to the upper support ring 6, and the upper end of the lower adjusting screw 11 abuts against the positioning pin support ring 10. When the lower adjusting screw 11 is screwed, since the lower adjusting screw 11 is threaded to the upper support ring 6, the lower adjusting screw 11 can move up and down. The lower adjusting screw 11 can drive the positioning pin support ring 10 to move up and down, so that the blade mounting angle positioning pin 5 moves up and down together with the positioning pin limiting ring 8, the positioning pin adjusting ring 9 and the positioning pin support ring 10, thereby adjusting the height position of the blade mounting angle positioning pin 5.

[0061] like Figure 3 As shown, in an optional embodiment, the turbine rotor wax mold splicing fixture further includes a lower adjusting support screw 12; the lower adjusting support screw 12 passes through the upper support ring 6 and the positioning pin support ring 10 from bottom to top and extends into the positioning pin adjusting ring 9, and the lower adjusting support screw 12 is threadedly connected to the positioning pin adjusting ring 9, and the rotating sleeve connected to the lower adjusting support screw 12 abuts against the bottom surface of the upper support ring 6 to restrict the vertical movement of the lower adjusting support screw 12.

[0062] Specifically, multiple lower adjusting support screws 12 are provided, preferably three, arranged in a triangular pattern. The lower adjusting support screws 12 pass through the upper support ring 6 and the positioning pin support ring 10, and the top of the lower adjusting support screw 12 extends into the positioning pin adjusting ring 9 for threaded connection. A rotating sleeve is connected to the outside of the lower adjusting support screw 12, and the top surface of the rotating sleeve abuts against the bottom surface of the upper support ring 6, so that the rotating sleeve and the lower adjusting support screw 12 can only rotate and cannot move vertically. When the lower adjusting support screw 12 rotates, since the lower adjusting support screw 12 cannot move vertically, and since the lower adjusting support screw 12 is threadedly connected to the positioning pin adjusting ring 9, it will drive the positioning pin adjusting ring 9 to move up and down, so that the positioning pin adjusting ring 9 drives the positioning pin limiting ring 8 to move up and down together, thereby adjusting the height position of the blade mounting angle positioning pin 5.

[0063] Furthermore, it should be noted that a guide post 32 is also provided. The bottom end of the guide post 32 is connected to the upper support ring 6, and the guide post 32 passes through the positioning pin support ring 10, the positioning pin adjusting ring 9, and the positioning pin limiting ring 8 from bottom to top. The top end of the guide post 32 is connected to the blade positioning disk 1. A guide spring 33 is installed on the outer sleeve of the guide post 32. One end of the guide spring 33 is connected to the blade positioning disk 1, and the other end is connected to the positioning pin limiting ring 8. The guide spring 33 is a compression spring, which makes the positioning pin limiting ring 8 tend to move away from the blade positioning disk 1. When the positioning pin limiting ring 8 moves upward, the guide spring 33 is compressed. When it is necessary to adjust the blade mounting angle positioning pin 5 downward, the elastic force generated by the guide spring 33 can push the positioning pin limiting ring 8 downward, which plays a role in returning to its original position.

[0064] In addition, an upper limit pin 29 and a lower limit pin 30 are provided. In the initial state, the upper limit pin 29 passes through the upper support block 7 and connects to the positioning pin limit ring 8 to fix the support block and the positioning pin limit ring 8. The lower limit pin 30 passes through the upper support ring 6 and connects to the positioning pin support ring 10. When adjusting the height position of the blade mounting angle positioning pin 5, the upper limit pin 29 and the lower limit pin 30 need to be removed.

[0065] The specific steps for adjusting the height of the blade mounting angle locating pin 5 are as follows:

[0066] When the blade mounting angle positioning pin 5 needs to be adjusted upwards, the rotating sleeve connected to the lower adjusting support screw 12 is turned clockwise. The lower adjusting support screw 12 rotates, causing the positioning pin adjusting ring 9 to move upwards. Meanwhile, the lower adjusting screw 11 is turned clockwise, causing the positioning pin support ring 10 to move upwards. The lower adjusting screw 11 supports the positioning pin adjusting ring 9, thus causing the blade mounting angle positioning pin 5 to move upwards. When the blade mounting angle positioning pin 5 needs to be adjusted downwards, the lower adjusting screw 11 and the lower adjusting support screw 12 are turned counterclockwise. Under the action of gravity and the elastic force of the guide spring 33, the positioning pin support ring 10, the positioning pin adjusting ring 9, and the positioning pin limiting ring 8 move downwards as a whole, thus causing the blade mounting angle positioning pin 5 to move downwards.

[0067] In an optional embodiment, the turbine rotor wax mold splicing fixture also includes a fixed disk 13 and an upper adjusting screw 14; the fixed disk 13 is located below the radial positioning disk 2, and the fixed disk 13 is connected to the blade positioning disk 1 by a connecting positioning pin 15 and a connecting bolt 16, the connecting positioning pin 15 plays a positioning role, and the connecting bolt 16 plays a connecting role.

[0068] The upper adjusting screw 14 passes through the radial positioning disc 2 and the fixed disc 13 in sequence, and is threadedly connected to both the radial positioning disc 2 and the fixed disc 13. The upper adjusting screw 14 is configured to move the radial positioning disc 2 by screwing. Specifically, by screwing the upper adjusting screw 14 in the forward direction, a gap is created between the end cap of the upper adjusting screw 14 and the top surface of the radial positioning disc 2, providing space for the radial positioning disc 2 to rise. By screwing the upper adjusting screw 14 in the reverse direction, the end cap of the upper adjusting screw 14 presses down on the radial positioning disc 2, thereby driving the radial positioning disc 2 to move downward.

[0069] In an optional embodiment, the turbine rotor wax mold splicing fixture further includes a limiting adjustment spring 17; a spring mounting groove 18 is provided at the bottom of the radial positioning disk 2, the limiting adjustment spring 17 is disposed in the spring mounting groove 18, one end of the limiting adjustment spring 17 is connected to the radial positioning disk 2, and the other end of the limiting adjustment spring 17 is connected to the fixed disk 13. The limiting adjustment spring 17 is configured to enable the radial positioning disk 2 and the fixed disk 13 to have a tendency to move away from each other. Specifically, the limiting adjustment spring 17 is compressed. When the upper adjusting screw 14 is turned in the reverse direction, the end cap of the upper adjusting screw 14 presses down on the radial positioning disk 2, and the limiting adjusting spring 17 is in a compressed state. When the upper adjusting screw 14 is turned in the forward direction, there is a gap between the end cap of the upper adjusting screw 14 and the top surface of the radial positioning disk 2. The elastic force generated by the limiting adjusting spring 17 is released and acts on the radial positioning disk 2, so that the radial positioning disk 2 is tightly attached to the end cap of the upper adjusting screw 14, and the radial positioning disk 2 can rise as the upper adjusting screw 14 is turned in the forward direction.

[0070] In an optional embodiment, the turbine rotor wax mold splicing fixture also includes a positioning post 19; the positioning post 19 passes through the radial positioning disk 2, and the bottom end of the positioning post 19 is fixed on the fixed disk 13. The positioning post 19 is used to restrict the direction of movement of the radial positioning disk 2, and the positioning post 19 plays a guiding role so that the radial positioning disk 2 can only move vertically.

[0071] In an optional embodiment, the turbine rotor wax mold splicing fixture further includes an upper auxiliary adjusting screw 20; the upper auxiliary adjusting screw 20 passes through the radial positioning disk 2, and the upper auxiliary adjusting screw 20 is threadedly connected to the radial positioning disk 2.

[0072] Specifically, the upper auxiliary adjusting screw 20 passes through the radial positioning disk 2 and is threadedly connected to the radial positioning disk 2. By screwing the upper auxiliary adjusting screw 20, the distance between the bottom end of the upper auxiliary adjusting screw 20 and the fixed disk 13 can be adjusted. This distance is the downward distance of the radial positioning disk 2. By controlling the height position of the upper auxiliary adjusting screw 20, the downward distance of the radial positioning disk 2 can be controlled. After the height position of the radial positioning disk 2 is adjusted, the upper auxiliary adjusting screw 20 is screwed to abut against the fixed disk 13 to avoid pressing the radial positioning disk 2 by hand, so that the radial positioning disk 2 moves downward.

[0073] like Figure 4 As shown, in an optional embodiment, the turbine rotor wax mold assembly fixture further includes an ejector block 21 and a rotating ring 22. The ejector block 21 passes through the upper support ring 6, the positioning pin support ring 10, the positioning pin adjustment ring 9, and the positioning pin limiting ring 8 from bottom to top. The top of the ejector block 21 is located in the gap between the blade positioning disk 1 and the radial positioning disk 2. The ejector block 21 is used to eject the wax mold formed by the blade positioning disk 1. The bottom of the ejector block 21 is provided with an inclined elongated hole 23. The rotating ring 22 is provided with a sliding rod 24, which extends into the inclined elongated hole 23. The rotating ring 22 is connected to a rotating handle 28. The rotating handle 28 can drive the rotating ring 22 to rotate, so that the sliding rod 24 pushes the ejector block 21 up and down in the inclined elongated hole 23.

[0074] The specific steps for ejecting the wax model are as follows:

[0075] Rotating the handle 28 drives the rotating ring 22 to rotate, and the slide rod 24 moves along with the rotating ring 22. Since the slide rod 24 passes through the oblique elongated hole 23, the movement of the slide rod 24 drives the ejector block 21 to move. By driving the rotating ring 22 to rotate in the forward or reverse direction, the up and down movement of the ejector block 21 can be controlled, so as to eject the wax mold on the blade positioning disc 1.

[0076] In addition, there are multiple ejector blocks 21, and each ejector block 21 is connected to an ejector ring 31 at its top. The ejector ring 31 contacts the wax model and ejects the wax model.

[0077] It is important to note that before the wax model is formed, it is necessary to ensure that the upper adjusting screw 14, upper auxiliary adjusting screw 20, lower adjusting screw 11, and lower adjusting support screw 12 are properly adjusted. During assembly, to ensure proper positioning, the blade can be manually pressed down to ensure the blade's positioning position contacts the upper tooling. After all the wax is applied, rotate the handle 28 to push the wax model upwards, aligning it with the blade edge plate. After pushing out, the assembled blade ring wax model can be removed for subsequent finishing.

[0078] In an optional embodiment, the turbine rotor wax mold splicing fixture further includes a lower support block 25; the top of the lower support block 25 supports the upper support ring 6, the lower support block 25 is annular, the inner wall of the lower support block 25 has a stepped surface, and the top of the stepped surface supports the rotating ring 22.

[0079] Specifically, the inner wall of the lower support block 25 has a horizontal protrusion, and the inner wall of the lower support block 25 and the horizontal protrusion form a stepped surface, which serves to support the rotating ring 22.

[0080] In an optional embodiment, the turbine rotor wax mold splicing fixture also includes a lower support ring 26; the lower support ring 26 supports the lower support block 25, and the bottom of the lower support ring 26 is provided with a support foot 27 with a pulley to facilitate the support and movement of the entire device.

[0081] The turbine rotor wax mold splicing fixture provided in this embodiment has the following effects:

[0082] 1. Point-to-surface positioning: The positioning point of the blade inlet edge is cleverly designed into a "V" shape. Two "V" shaped positioning points are designed at the near-tip section 120 and near-root section 110 of the blade body. The "V" shaped structure supports the blade, making it less prone to slippage and ensuring reliable positioning. Radial positioning relies on the parting surface 140 of the blade 100 after splitting. This surface contacts the tooling surface, and due to the large contact area, the positioning is reliable.

[0083] 2. This fixture allows for the overall adjustment of the blade mounting angle: this is achieved by adjusting the lower adjusting screw 11 and the lower adjusting support screw 12. In this way, for the guide vane, castings of the same blade with different throat areas can be produced.

[0084] 3. This fixture can adjust the radial dimension (flow channel dimension): by adjusting the adjusting screw and the upper auxiliary adjusting screw 20.

[0085] 4. This fixture has a rotating ejection structure, which allows the glued wax model to be freely removed after assembly, avoiding problems such as deformation caused by manual removal.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A turbine rotor wax pattern assembly fixture, characterized by, The turbine rotor wax mold splicing tool comprises: a blade positioning disc (1) and a radial positioning disc (2); the blade positioning disc (1) is annular, and the blade positioning disc (1) surrounds the radial positioning disc (2); a first clamping protrusion (3) and a second clamping protrusion (4) are arranged on the top surface of the blade positioning disc (1) in a radial direction, a first V-shaped clamping groove is formed on the top surface of the first clamping protrusion (3), the first V-shaped clamping groove is used for supporting a proximal root section (110) of a unit blade (100), a second V-shaped clamping groove is formed on the top surface of the second clamping protrusion (4), and the second V-shaped clamping groove is used for supporting a proximal tip section (120) of the unit blade (100); a blade mounting angle positioning pin (5) is arranged in the blade positioning disc (1), the blade mounting angle positioning pin (5) is used for supporting a blade body and a blade basin (130) of the unit blade (100), and the blade mounting angle positioning pin (5) is configured to be movable in a vertical direction, so as to adjust a contact position of the blade mounting angle positioning pin (5) and the unit blade (100); the radial positioning disc (2) is in a circular truncated cone shape, a side surface of the radial positioning disc (2) is used for abutting against a rim plate parting surface (140) of the unit blade (100), and the radial positioning disc is configured to be movable in the vertical direction, so as to adjust a contact position of the side surface of the radial positioning disc (2) and the unit blade (100); the turbine rotor wax mold splicing tool further comprises an upper support ring (6), an upper support block (7), a positioning pin limiting ring (8), a positioning pin adjusting ring (9), a positioning pin support ring (10) and a lower adjusting screw rod (11); the upper support ring (6) is located below the blade positioning disc (1), and the upper support ring (6) and the blade positioning disc (1) are connected through the upper support block (7); the positioning pin limiting ring (8), the positioning pin adjusting ring (9) and the positioning pin support ring (10) are arranged in a stack from top to bottom on the upper support ring (6), and one end of the blade mounting angle positioning pin (5) away from the unit blade (100) is connected with the positioning pin limiting ring (8); the lower adjusting screw rod (11) is threadedly connected with the upper support ring (6), an upper end of the lower adjusting screw rod (11) abuts against the positioning pin support ring (10), and the lower adjusting screw rod (11) is used for pushing the positioning pin support ring (10), so that the blade mounting angle positioning pin (5) moves up and down together with the positioning pin limiting ring (8), the positioning pin adjusting ring (9) and the positioning pin support ring (10).

2. The turbine rotor wax mold splicing tool according to claim 1, wherein the turbine rotor wax mold splicing tool further comprises a lower adjusting support screw rod (12). The lower adjusting support screw rod (12) is sequentially inserted into the positioning pin adjusting ring (9) through the upper support ring (6) and the positioning pin support ring (10) from bottom to top, and the lower adjusting support screw rod (12) is threadedly connected with the positioning pin adjusting ring (9). A rotating sleeve connected with the lower adjusting support screw rod (12) abuts against the bottom surface of the upper support ring (6) to limit the vertical movement of the lower adjusting support screw rod (12).

3. The turbine rotor wax mold splicing tool according to claim 1, characterized in that, The turbine rotor wax mold splicing tool further comprises a fixing disc (13) and an upper adjusting screw rod (14); The fixing disc (13) is located below the radial positioning disc (2), and the fixing disc (13) is connected with the blade positioning disc (1) through a connecting positioning pin (15) and a connecting bolt (16); The upper adjusting screw rod (14) sequentially passes through the radial positioning disc (2) and the fixing disc (13), and the upper adjusting screw rod (14) is threadedly connected with the radial positioning disc (2) and the fixing disc (13) respectively, and the upper adjusting screw rod (14) is configured to drive the radial positioning disc (2) to move by screwing.

4. The turbine rotor wax mold splicing tool according to claim 3, characterized in that, The turbine rotor wax mold splicing tool further comprises a limiting adjusting spring (17); A spring mounting groove (18) is arranged at the bottom of the radial positioning disc (2), the limiting adjusting spring (17) is arranged in the spring mounting groove (18), one end of the limiting adjusting spring (17) is connected with the radial positioning disc (2), the other end of the limiting adjusting spring (17) is connected with the fixing disc (13), and the limiting adjusting spring (17) is configured to make the radial positioning disc (2) and the fixing disc (13) have a mutual moving trend away from each other.

5. The turbine rotor wax mold splicing tool according to claim 4, characterized in that, The turbine rotor wax mold splicing tool further comprises a positioning column (19); The positioning column (19) is arranged in the radial positioning disc (2), and the bottom end of the positioning column (19) is fixed on the fixing disc (13), and the positioning column (19) is used to limit the moving path direction of the radial positioning disc (2).

6. The turbine rotor wax mold splicing tool according to claim 5, characterized in that, The turbine rotor wax mold splicing tool further comprises an upper auxiliary adjusting screw rod (20); The upper auxiliary adjusting screw rod (20) passes through the radial positioning disc (2), and the upper auxiliary adjusting screw rod (20) is threadedly connected with the radial positioning disc (2).

7. The turbine rotor wax mold splicing tool according to claim 3, characterized in that, The turbine rotor wax mold splicing tool further comprises an ejection block (21) and a rotating ring (22); The ejection block (21) passes through the upper support ring (6), the positioning pin support ring (10), the positioning pin adjusting ring (9) and the positioning pin limiting ring (8) from bottom to top, and the top of the ejection block (21) is located in the gap between the blade positioning disc (1) and the radial positioning disc (2), and the ejection block (21) is used for ejecting the wax mold formed by the blade positioning disc (1); The bottom of the ejection block (21) is provided with an inclined long slot hole (23), the rotating ring (22) is provided with a sliding rod (24), the sliding rod (24) extends into the inclined long slot hole (23), and the rotating ring (22) is configured to rotate to drive the sliding rod (24) to move the ejection block (21) up and down in the inclined long slot hole (23).

8. The turbine rotor wax mold splicing tool according to claim 7, characterized in that, The turbine rotor wax mold splicing tool further comprises a lower support block (25); The top end of the lower support block (25) supports the upper support ring (6), the lower support block (25) is in the form of a circular ring, the inner wall of the lower support block (25) is formed with a stepped surface, and the top end of the stepped surface supports the rotating ring (22).

9. The turbine rotor wax mold splicing tool according to claim 8, characterized in that, The turbine rotor wax mold splicing tool further comprises a lower support ring (26); The lower support ring (26) supports the lower support block (25), and the bottom of the lower support ring (26) is provided with a support leg (27) with a pulley.

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