Blade wax pattern assembly jig

Abstract

The application discloses a blade wax mold assembling clamp, which comprises a base, positioning seats arranged on the base and used for assembling blade wax molds, a positioning strip mechanism used for aligning inner and outer flow channels of the blade wax molds, and a locking mechanism used for abutting against the blade wax molds to fix, clamping grooves used for limiting the circumferential position of the positioning strip mechanism are arranged on both ends of the positioning seat, lock catch mechanisms used for limiting the axial position of the positioning strip mechanism are arranged on the clamping grooves, the locking mechanism is arranged on the base along the circumferential direction of the positioning strip mechanism and corresponds to the blade wax molds one by one, and the blade wax mold assembling clamp has the advantages of simple structure, convenient operation, reduced error of wax mold splicing, improved qualified rate of part wax molds and work efficiency of operators.

Description

Technical Field

[0001] This invention relates to the field of aero-engine technology, and in particular to a blade wax mold assembly fixture. Background Technology

[0002] Aero-engine blades are key components used to convert the internal energy of fuel into the kinetic energy of the aircraft. By compressing air, the blades generate kinetic energy for the aircraft through the reaction force of the air. The shape and structure of the blades are important factors affecting their efficiency in doing work on the air. Therefore, it is necessary to ensure that the inner and outer flow channels of the blades are aligned. This process is difficult to manufacture and has high quality requirements. Precision casting using the lost-wax casting method is usually employed.

[0003] Due to the differences in mold processing for pressing blade wax molds, there will be differences in the structure of unit blade wax molds, as well as anisotropic deformation of the blade wax molds themselves. This results in inconsistent widths of the inner and outer flow channels of the unit blade wax molds, or inconsistent diameters of the positioning surfaces of the inner and outer edge plates. This leads to the critical problem of steps appearing on the flow channel surface of the blade wax mold after positioning and assembly, resulting in large errors in the part wax molds. Therefore, there is an urgent need to develop a blade wax mold assembly fixture. Summary of the Invention

[0004] This invention provides a blade wax model assembly fixture to solve the technical problem that existing blade wax model splicing devices are not suitable for situations where the widths of the inner and outer flow channels of a unit blade wax model are inconsistent, or the diameters of the inner and outer edge plate positioning surfaces are inconsistent, resulting in large errors in the part wax model.

[0005] According to one aspect of the present invention, a blade wax model assembly fixture is provided, comprising a base, a positioning seat disposed on the base for assembling blade wax models, a positioning strip mechanism for aligning the inner and outer channels of a plurality of blade wax models, and a locking mechanism for abutting against the blade wax models for fixing. The positioning seat is provided with slots at both ends for defining the circumferential position of the positioning strip mechanism, and the slots are provided with locking mechanisms for defining the axial position of the positioning strip mechanism. The locking mechanisms are disposed along the circumferential direction of the positioning strip mechanism and are disposed on the base in a one-to-one correspondence with the blade wax models.

[0006] Furthermore, the slot includes a first card block and a second card block arranged radially at intervals on the positioning seat along the positioning strip mechanism.

[0007] Furthermore, the locking mechanism includes a locking rod disposed on the first locking block for pressing the positioning strip mechanism, and a first locking screw disposed on the second locking block for locking the locking rod.

[0008] Furthermore, the positioning strip mechanism includes a first arc-shaped positioning strip for aligning the outer flow channel of the blade wax mold and a second arc-shaped positioning strip for abutting against the inner flow channel of the aligned blade wax mold. The outer arc surface of the first arc-shaped positioning strip abuts against the outer flow channel of the blade wax mold, the inner arc surface of the second arc-shaped positioning strip abuts against the inner flow channel of the blade wax mold, and the inner arc surface of the first arc-shaped positioning strip abuts against the outer arc surface of the second arc-shaped positioning strip.

[0009] Furthermore, both the inner arc surface of the first arc-shaped positioning strip and the outer arc surface of the second arc-shaped positioning strip are conical arc surfaces.

[0010] Furthermore, a first positioning groove adapted to the first card block is formed on the outer arc surface of the first arc-shaped positioning strip, and a second positioning groove is formed on the inner arc surface of the second arc-shaped positioning strip.

[0011] Furthermore, the locking mechanism includes a first support seat disposed on the base, a first angular ejector pin connected to the first support seat for abutting against the leaf wax mold, and a first spring sleeved on the first angular ejector pin for forcing the first angular ejector pin to abut against the leaf wax mold, wherein the first angular ejector pin is arranged radially along the positioning strip mechanism.

[0012] Furthermore, the base is provided with a first arc-shaped groove concentrically arranged with the positioning bar mechanism, the bottom end of the first support seat is slidably connected to the first arc-shaped groove, and the base is also provided with a second locking screw for fixing the first support seat on the first arc-shaped groove.

[0013] Furthermore, the top of the first support base is provided with a second arc-shaped groove concentrically arranged with the positioning bar mechanism. A second support base that can slide along the second arc-shaped groove is arranged in the second arc-shaped groove. A second angular ejector pin arranged radially along the positioning bar mechanism, a second spring for forcing the second angular ejector pin to abut against the leaf wax mold, and a third locking screw for limiting the position of the second support base and the second arc-shaped groove are slidably connected on the second support base. The third locking screw is arranged radially along the positioning bar mechanism.

[0014] Furthermore, the first support is also provided with a fourth locking screw for abutting against the bottom surface of the second support, and the fourth locking screw is arranged along the axial direction of the positioning bar mechanism.

[0015] The present invention has the following beneficial effects:

[0016] The blade wax model assembly fixture provided by this invention has an inner arc surface of the positioning strip mechanism that matches the shape of the inner edge plate of the blade wax model, and an outer arc surface that matches the shape of the outer edge plate of the blade wax model. In use, multiple blade wax models are placed on the positioning seat and simply aligned. Then, the positioning strip mechanism is snapped between the inner and outer edge plates of the multiple blade wax models, so that the splicing points of the multiple blade wax models are flat and aligned (without steps), thereby ensuring the alignment of the inner and outer flow channels of the multiple blade wax models. Then, the locking mechanism abuts against the outer edge plate of each blade wax model, so that the position of the blade wax model is fixed, so as to facilitate welding the assembled multiple blade wax models together. The structure is simple, the operation is convenient, and it can reduce the error of wax model splicing, improve the pass rate of part wax models, and improve the work efficiency of operators. Optionally, the central angles corresponding to the positioning seat and positioning strip mechanism are 90° to 180°. Due to the high processing difficulty and quality requirements of blades, for some types of aero engines, directly assembling the entire ring of blade wax molds may result in the scrapping of the entire part wax mold due to anisotropic deformation of one unit blade wax mold. This not only wastes materials but also seriously affects the production schedule and may even cause irreparable losses. Therefore, adopting a non-ring assembly method for blade wax molds can reduce the assembly difficulty, reduce material waste, and ensure the production schedule.

[0017] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0019] Figure 1 This is a schematic diagram of the spliced ​​blade wax model structure according to a preferred embodiment of the present invention. Figure 1 (a) is a top view of the wax model of the blade part. Figure 1 (b) is a schematic diagram of the external flow channel of the wax mold for the blade part. Figure 1 (c) is Figure 1 (a) shows the AA-direction sectional view. Figure 1 (d) is a schematic diagram of the internal flow channel of the wax mold of the blade part;

[0020] Figure 2 This is a schematic diagram of the structure of the blade wax mold assembly fixture according to a preferred embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the first arc-shaped groove in a preferred embodiment of the present invention;

[0022] Figure 4This is a schematic diagram of the structure of placing the blade wax model on the positioning seat in a preferred embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the locking mechanism abutting against the blade wax mold according to a preferred embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the locking mechanism according to a preferred embodiment of the present invention;

[0025] Figure 7 This is a cross-sectional view of the blade wax mold assembly fixture according to a preferred embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the positioning bar mechanism according to a preferred embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the first arc-shaped positioning strip in a preferred embodiment of the present invention;

[0028] Figure 10 This is a schematic diagram of the structure of the second arc-shaped positioning strip in a preferred embodiment of the present invention.

[0029] Legend:

[0030] 100. Leaf wax model; 101. Ejector pin hole; 1. Base; 11. First arc-shaped groove; 12. Second locking screw; 13. T-shaped slider; 2. Positioning seat; 21. Slot; 211. First locking block; 212. Second locking block; 22. Locking mechanism; 221. Locking rod; 222. First locking screw; 223. Slot; 3. Positioning strip mechanism; 31. First arc-shaped positioning strip; 311. First positioning groove; 32. Second arc-shaped positioning strip; 321. Second positioning groove; 4. Locking mechanism; 41. First support seat; 42. First angular ejector pin; 43. First spring; 44. Second arc-shaped groove; 45. Second support seat; 46. Second angular ejector pin; 47. Second spring; 48. Third locking screw; 49. Fourth locking screw; 5. Limiting ring; 6. Handle. Detailed Implementation

[0031] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0032] Please refer to the following: Figures 1 to 10The blade wax model assembly fixture of this embodiment includes a base 1, a positioning seat 2 for assembling blade wax models 100 arranged on the base 1, a positioning strip mechanism 3 for aligning the inner and outer flow channels of multiple blade wax models 100, and a locking mechanism 4 for abutting against the blade wax models 100 to fix them. The positioning seat 2 has slots 21 at both ends for limiting the circumferential position of the positioning strip mechanism 3. The slots 21 have locking mechanisms 22 for limiting the axial position of the positioning strip mechanism 3. The locking mechanism 4 is arranged along the circumferential direction of the positioning strip mechanism 3 and is arranged on the base 1 in a one-to-one correspondence with the blade wax models 100.

[0033] The inner arc surface of the positioning strip mechanism 3 matches the shape of the inner edge plate of the blade wax model 100, and the outer arc surface of the positioning strip mechanism 3 matches the shape of the outer edge plate of the blade wax model 100. In use, multiple blade wax models 100 are placed on the positioning seat 2 and simply aligned. Then, the positioning strip mechanism 3 is snapped between the inner and outer edge plates of the multiple blade wax models 100, so that the splicing parts of the multiple blade wax models 100 are flat and aligned (without steps), thereby ensuring the alignment of the inner and outer flow channels of the multiple blade wax models 100. Then, the locking mechanism 4 abuts against the outer edge plate of each blade wax model 100, so that the position of the blade wax model 100 is fixed, so that the assembled multiple blade wax models 100 can be welded together. The structure is simple and easy to operate, which can reduce the error of wax model splicing, improve the qualification rate of part wax models and the work efficiency of operators. Optionally, the central angles corresponding to the positioning seat 2 and the positioning strip mechanism 3 are 90° to 180°. Due to the high processing difficulty and quality requirements of the blades, for some types of aero engines, directly assembling the entire ring of blade wax molds may result in the scrapping of the entire part wax mold due to anisotropic deformation of one unit blade wax mold. This not only wastes materials but also seriously affects the production schedule and may even cause irreparable losses. Therefore, adopting the non-ring assembly method of blade wax molds can reduce the assembly difficulty, reduce material waste, and ensure the production schedule.

[0034] In this embodiment, the slot 21 includes a first card block 211 and a second card block 212 arranged radially at intervals on the positioning base 2 along the positioning strip mechanism 3. The first card block 211 and the second card block 212 fix the circumferential position of the positioning strip mechanism 3. The structure is simple and easy to operate. It can prevent the positioning strip mechanism 3 from moving during the assembly process and ensure that the inner and outer flow channels of multiple blade wax molds 100 remain aligned.

[0035] In this embodiment, the locking mechanism 22 includes a locking rod 221 disposed on the first locking block 211 for pressing the positioning strip mechanism 3, and a first locking screw 222 disposed on the second locking block 212 for locking the locking rod 221. Optionally, the rotation axis of the locking rod 221 is perpendicular to the top surface of the first locking block 211. The locking rod 221 has a slot 223 adapted to the first locking screw 222. After the positioning strip mechanism 3 is placed into the slot 21, the locking rod 221 is rotated so that the slot 223 on the locking rod 221 engages with the first locking screw 222. Tightening the first locking screw 222 can fix the axial position of the positioning strip mechanism 3, prevent the positioning strip mechanism 3 from coming out, and ensure smooth assembly. Optionally, the rotation axis of the locking rod 221 is parallel to the top surface of the first locking block 211. By rotating the locking rod 221, the slot 223 on the locking rod 221 coincides with the threaded hole on the top surface of the first locking block 211. Then, the first locking screw 222 is inserted into the threaded hole on the top surface of the first locking block 211 and tightened to fix the axial position of the positioning bar mechanism 3.

[0036] In this embodiment, the positioning strip mechanism 3 includes a first arc-shaped positioning strip 31 for aligning the outer flow channel of the blade wax model 100 and a second arc-shaped positioning strip 32 for abutting against the inner flow channel of the blade wax model 100. The outer arc surface of the first arc-shaped positioning strip 31 abuts against the outer flow channel of the blade wax model 100, the inner arc surface of the second arc-shaped positioning strip 32 abuts against the inner flow channel of the blade wax model 100, and the inner arc surface of the first arc-shaped positioning strip 31 abuts against the outer arc surface of the second arc-shaped positioning strip 32. Since the blade wax model 1... The inner and outer edge plates of the blade wax mold 100 are arranged with a narrow top and a wide bottom. A single integral positioning strip mechanism 3 cannot be directly placed between the inner and outer edge plates of the blade wax mold 100. Therefore, the positioning strip mechanism 3 is designed as a combination positioning strip of the first arc-shaped positioning strip 31 and the second arc-shaped positioning strip 32. The first arc-shaped positioning strip 31 and the second arc-shaped positioning strip 32 can be placed between the inner and outer edge plates in sequence, and then the first arc-shaped positioning strip 31 and the second arc-shaped positioning strip 32 abut against each other, which can ensure the alignment of the inner and outer flow channels of the blade wax mold 100.

[0037] In this embodiment, the inner arc surface of the first arc-shaped positioning strip 31 and the outer arc surface of the second arc-shaped positioning strip 32 are both conical arc surfaces, which can increase the contact area between the first arc-shaped positioning strip 31 and the second arc-shaped positioning strip 32, thereby increasing the friction force and preventing the first arc-shaped positioning strip 31 and the second arc-shaped positioning strip 32 from being misaligned, which would cause the inner and outer flow channels of the blade wax mold 100 to be misaligned.

[0038] In this embodiment, a first positioning groove 311 adapted to the first locking block 211 is provided on the outer arc surface of the first arc positioning strip 31, and the angle α between the first positioning groove 311 and the outer arc surface of the first arc positioning strip 31 is 30° to 45°; a second positioning groove 321 is provided on the inner arc surface of the second arc positioning strip 32, and the angle β between the second positioning groove 321 and the inner arc surface of the second arc positioning strip 32 is 60° to 90°. By setting different angles on the first arc positioning strip 31 and the second arc positioning strip 32, the circumferential position of the positioning strip mechanism 3 can be fixed on the one hand, and the error prevention function can be used on the other hand to avoid the operator's equipment error and ensure smooth assembly.

[0039] In this embodiment, the locking mechanism 4 includes a first support base 41 disposed on the base 1, a first angular ejector pin 42 connected to the first support base 41 for abutting against the leaf wax model 100, and a first spring 43 sleeved on the first angular ejector pin 42 for driving the first angular ejector pin 42 to abut against the leaf wax model 100. The first angular ejector pin 42 is arranged radially along the positioning strip mechanism 3. The first spring 43 is in a compressed state, and a limiting ring 5 is provided on the first angular ejector pin 42. One end of the first spring 43 abuts against the limiting ring 5, and the other end abuts against the side wall of the first support base 41, ensuring that the force exerted by each first spring 43 on the leaf wax model 100 is equal, which can play the role of ensuring the size is qualified and protecting the wax model. Optionally, a handle 6 is provided on the end of the first angular ejector pin 42 away from the first spring 43, so that the operator can pull the first angular ejector pin 42 out of the ejector pin hole 101. Optionally, the first angular ejector pin 42 is provided with an external thread on one end of the first spring 43, and the first support seat 41 is provided with an internal thread on the through hole of the first angular ejector pin 42. When the first angular ejector pin 42 is pulled back, the first angular ejector pin 42 is fixed by rotating the handle 6, so as to place the blade wax mold 100 on the positioning seat 2.

[0040] In precision casting, due to the different sizes of different blade wax molds and anisotropic deformation of the wax molds, the ejector pins of the assembly fixture often cannot be accurately inserted into the ejector pin holes 101 on the outer edge plate of the blade wax mold 100 during assembly. In this embodiment, the base 1 is provided with a first arc-shaped groove 11 concentrically arranged with the positioning bar mechanism 3. The bottom end of the first support seat 41 is slidably connected to the first arc-shaped groove 11. The base 1 is also provided with a second locking screw 12 for fixing the first support seat 41 on the first arc-shaped groove 11. The second locking screw 12 is arranged along the axial direction of the positioning bar mechanism 3. Specifically, the first support base 41 and the second locking screw 12 are disposed opposite to each other on both sides of the first arc-shaped slide groove 11. The second locking screw 12 passes through the first arc-shaped slide groove 11 and connects to the first support base 41, locking the first support base 41 onto the first arc-shaped slide groove (11). The first support base 41 can be adjusted along the first arc-shaped slide groove 11 and fixed by the second locking screw 12, which can be applied to different types of blade models 100. Optionally, a T-shaped slider 13 that can slide along the first arc-shaped slide groove 11 is provided in the first arc-shaped slide groove 11. The second locking screw 12 passes through the T-shaped slider 13 and is connected to the first support seat 41 by thread. In use, the second locking screw 12 is loosened, and the position of the first support seat 41 can be adjusted by the T-shaped slider 13. After the first angular ejector pin 42 is aligned with the ejector pin hole 101 on the blade wax model 100, the second locking screw 12 is tightened to ensure that the first angular ejector pin 42 can be inserted into the ejector pin hole 101 in the radial direction of the blade wax model 100. While positioning the blade wax model 100, the deformation of the blade wax model 100 can be avoided.

[0041] In this embodiment, the top of the first support base 41 is provided with a second arc-shaped groove 44 concentrically arranged with the positioning strip mechanism 3. A second support base 45 that can slide along the second arc-shaped groove 44 is arranged inside the second arc-shaped groove 44. A second angular ejector pin 46 arranged radially along the positioning strip mechanism 3, a second spring 47 for driving the second angular ejector pin 46 to abut against the blade wax mold 100, and a third locking screw 48 for limiting the position of the second support base 45 and the second arc-shaped groove 44 are slidably connected on the second support base 45. The third locking screw 48 is arranged radially along the positioning strip mechanism 3. The same blade wax mold 100 is composed of two top... The pin is locked to ensure that the blade wax model 100 will not move or deviate. The second angular ejector pin 46 can be adjusted in position along the second arc-shaped slide groove 44 and fixed by the third locking screw 48, which can be used for different models of blade models 100. In use, loosening the third locking screw 48 can adjust the position of the second support base 45. After the second angular ejector pin 46 is aligned with the ejector pin hole 101 on the blade wax model 100, tightening the third locking screw 48 ensures that the second angular ejector pin 46 can be inserted into the ejector pin hole 101 in the radial direction of the blade wax model 100, which can position the blade wax model 100 and prevent deformation. Optionally, the second spring 47 is in a compressed state. The second angular ejector pin 46 is provided with a limiting ring 5. One end of the second spring 47 abuts against the limiting ring 5, and the other end abuts against the side wall of the second support base 45, ensuring that the force exerted by each second spring 47 on the blade wax model 100 is equal, which can ensure the dimensional accuracy and protect the wax model. Optionally, a handle 6 is provided on the end of the second angular ejector pin 46 away from the second spring 47, so that the operator can pull the second angular ejector pin 46 out of the ejector pin hole 101. Optionally, the end of the second angular ejector pin 46 that is fitted with the second spring 47 is provided with an external thread, and the second support seat 45 is provided with an internal thread on the through hole for passing through the second angular ejector pin 46. When the second angular ejector pin 46 is pulled backward, the second angular ejector pin 46 is rotated by the handle 6, thereby fixing the second angular ejector pin 46, so as to place the blade wax mold 100 on the positioning seat 2.

[0042] In this embodiment, the first support base 41 is also provided with a fourth locking screw 49 for abutting against the bottom surface of the second support base 45. The fourth locking screw 49 is arranged along the axial direction of the positioning bar mechanism 3. The fourth locking screw 49 can abut against the bottom surface of the second support base 45, thereby locking the position of the second support base 45 along the axial direction of the positioning bar mechanism 3, preventing the second support base 45 from shaking, and further ensuring the stability of the second angular ejector pin 46.

[0043] The method of using the blade wax mold assembly fixture provided by the present invention includes the following steps:

[0044] First, pull the ejector pin backward using handle 6, then select handle 6 to retract and fix the ejector pin on the support, providing sufficient space for placing the leaf wax model 100;

[0045] Then, multiple blade wax molds 100 are placed on the positioning seat 2 for simple alignment, and then the first arc-shaped positioning strip 31 and the second arc-shaped positioning strip 32 are placed in sequence to align the inner and outer flow channels of the blade wax molds 100.

[0046] Adjust the position of the first support base 41 in the first arc-shaped slide groove 11. When the first angular ejector pin 42 is aligned with the lower row of ejector pin holes 101 on the outer edge plate of the blade wax mold 100, tighten the second locking screw 12 at the bottom of the first support base 41. Rotate the handle 6 to disengage the first angular ejector pin 42 from the thread of the first support base 41. The first angular ejector pin 42 is inserted into the lower row of ejector pin holes 101 under the elastic force of the first spring 43. During the insertion process, hold the handle 6 to control the speed of the first angular ejector pin 42 to avoid the first angular ejector pin 42 damaging the blade wax mold 100 or causing the blade wax mold 100 to deform.

[0047] Then rotate the locking rod 221 so that the slot 223 on the locking rod 221 engages with the first locking screw 222, and tighten the first locking screw 222 to fix the axial position of the positioning bar mechanism 3;

[0048] Adjust the position of the second support seat 45 in the second arc-shaped slide groove 44. When the second angular ejector pin 46 is aligned with the position of the upper row of ejector pin holes 101 on the outer edge plate of the blade wax mold 100, tighten the third locking screw 48 and the fourth locking screw 49. Rotate the second angular ejector pin 46 through the handle 6 to disengage the second angular ejector pin 46 from the thread of the second support seat 45. The second angular ejector pin 46 is inserted into the upper row of ejector pin holes 101 under the elastic force of the second spring 47. During the insertion process, hold the handle 6 to control the speed of the second angular ejector pin 46 to avoid the second angular ejector pin 46 damaging the blade wax mold 100 or causing the blade wax mold 100 to deform.

[0049] Weld the assembled multiple blade wax molds 100 together, then open the second angular ejector pin 46, locking rod 221, and first support base 41 in sequence, and take out the second arc-shaped positioning strip 32 and the first arc-shaped positioning strip 31 in sequence to remove the parts wax mold assembly.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A blade wax mold assembly fixture, characterized in that, It includes a base (1), a positioning seat (2) arranged on the base (1) for assembling the blade wax mold (100), a positioning strip mechanism (3) for aligning the inner and outer flow channels of the multiple blade wax molds (100), and a locking mechanism (4) for abutting the blade wax mold (100) to fix it. The positioning seat (2) is provided with slots (21) at both ends for limiting the circumferential position of the positioning bar mechanism (3), and the slots (21) are provided with locking mechanisms (22) for limiting the axial position of the positioning bar mechanism (3). The locking mechanism (4) is arranged circumferentially along the positioning strip mechanism (3) and is arranged on the base (1) in a one-to-one correspondence with the blade wax mold (100). The slot (21) includes a first card block (211) and a second card block (212) arranged radially on the positioning seat (2) along the positioning bar mechanism (3). The positioning strip mechanism (3) includes a first arc-shaped positioning strip (31) for aligning the outer flow channel of the blade wax mold (100) and a second arc-shaped positioning strip (32) for abutting against the inner flow channel of the aligned blade wax mold (100). The outer arc surface of the first arc-shaped positioning strip (31) abuts against the outer flow channel of the blade wax mold (100), and the inner arc surface of the second arc-shaped positioning strip (32) abuts against the inner flow channel of the blade wax mold (100). The inner arc surface of the first arc-shaped positioning strip (31) abuts against the outer arc surface of the second arc-shaped positioning strip (32).

2. The blade wax mold assembly fixture according to claim 1, characterized in that, The locking mechanism (22) includes a locking rod (221) disposed on the first locking block (211) for pressing the positioning bar mechanism (3) and a first locking screw (222) disposed on the second locking block (212) for locking the locking rod (221).

3. The blade wax mold assembly fixture according to claim 1, characterized in that, The inner arc surface of the first arc-shaped positioning strip (31) and the outer arc surface of the second arc-shaped positioning strip (32) are conical arc surfaces that fit together.

4. The blade wax mold assembly fixture according to claim 1, characterized in that, The first arc-shaped positioning strip (31) has a first positioning groove (311) adapted to the first card block (211) on its outer arc surface, and the second arc-shaped positioning strip (32) has a second positioning groove (321) on its inner arc surface.

5. The blade wax mold assembly fixture according to any one of claims 1 to 4, characterized in that, The locking mechanism (4) includes a first support seat (41) arranged on the base (1), a first angular ejector pin (42) slidably connected to the first support seat (41) for abutting the blade wax model (100), and a first spring (43) sleeved on the first angular ejector pin (42) for forcing the first angular ejector pin (42) to abut the blade wax model (100). The first angular pin (42) is arranged radially along the positioning bar mechanism (3).

6. The blade wax mold assembly fixture according to claim 5, characterized in that, The base (1) is provided with a first arc-shaped groove (11) that is concentric with the positioning bar mechanism (3). The bottom end of the first support seat (41) is slidably connected to the first arc-shaped groove (11). The base (1) is also provided with a second locking screw (12) for fixing the first support seat (41) on the first arc-shaped groove (11).

7. The blade wax mold assembly fixture according to claim 6, characterized in that, The top of the first support base (41) is provided with a second arc-shaped groove (44) that is concentrically arranged with the positioning bar mechanism (3). The second arc-shaped groove (44) is provided with a second support seat (45) that can slide along the second arc-shaped groove (44). The second support seat (45) is slidably connected with a second angular ejector pin (46) arranged radially along the positioning bar mechanism (3), a second spring (47) for forcing the second angular ejector pin (46) to abut against the blade wax mold (100), and a third locking screw (48) for limiting the position of the second support seat (45) and the second arc-shaped groove (44). The third locking screw (48) is arranged radially along the positioning bar mechanism (3).

8. The blade wax mold assembly fixture according to claim 7, characterized in that, The first support (41) is also provided with a fourth locking screw (49) for abutting against the bottom surface of the second support (45). The fourth locking screw (49) is arranged along the axial direction of the positioning bar mechanism (3).

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