A turbine blade casting mold and method of use thereof

Abstract

The application belongs to the technical field of turbine blade precision casting of an aero-engine, and discloses a turbine blade casting mold and a using method thereof, wherein the mold comprises a ceramic core, an upper core head is arranged above a core blade top, a lower core head is arranged below a core blade bottom, a first positioning structure is arranged at a core blade body close to a core tail edge, a second positioning structure and a third positioning structure are arranged at a core blade basin close to a core leading edge, a fourth positioning structure is arranged on the upper core head along a direction perpendicular to the core blade body, a fifth positioning structure is arranged on the lower core head along a direction perpendicular to the core blade body, and a sixth positioning structure is arranged at the core blade bottom along a direction parallel to the core blade body. The six positioning structures are arranged on the ceramic core, the core is controlled by adopting a six-point positioning method combined with a casting drawing, the core lining is cancelled, the position of the core is ensured, the wall thickness and the inner cavity size are solved, the consistency of the inner cavity size of the casting is ensured, and the blade qualification rate is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of precision casting of turbine blades of an aero-engine, and particularly relates to a turbine blade casting mold and a use method thereof. BACKGROUND

[0002] The turbine blade of an aero-engine has high requirements on the wall thickness size precision, the hollow turbine blade adopts a complex inner cavity cooling structure, and the inner cavity size precision is extremely high to achieve the expected cooling effect. The inner cavity wall thickness relates to the strength of the blade and affects the service life of the blade, and the inner cavity size relates to the cooling effect of the blade.

[0003] At present, the inner cavity size is solved by a core, and the position of the core relates to the wall thickness and the inner cavity size position. If the position of the core is not reasonably controlled, the wall thickness and the inner cavity size of the casting will be out of tolerance, which affects the service life and the cooling effect of the blade.

[0004] At present, the wall thickness and the inner cavity size of the casting are controlled by a core and a wax mold. The core positioning mainly adopts a core lining to fix the position of the core in the wax mold. The core position control is difficult, and the proportion of the out-of-tolerance wall thickness and inner cavity size of the casting is high.

[0005] In summary, the aviation field urgently needs a technical solution that can solve the out-of-tolerance wall thickness and inner cavity size of the hollow turbine blade. SUMMARY

[0006] In view of the above problems, the application provides a turbine blade casting mold and a use method thereof, which adopts the following technical solutions:

[0007] A turbine blade casting mold, comprising a ceramic core, the ceramic core comprising an upper core head, a lower core head, a core blade body, a core blade tip, a core blade bottom, a core blade basin, a core blade back, a core leading edge and a core trailing edge;

[0008] The upper core head is arranged above the core blade tip, the lower core head is arranged below the core blade bottom, the core blade body is provided with a first positioning structure near the core trailing edge, the core blade basin is provided with a second positioning structure and a third positioning structure near the core leading edge, and the first positioning structure, the second positioning structure and the third positioning structure are used to control the position of the ceramic core in the direction of the wax mold basin back;

[0009] The fourth positioning structure is arranged on the upper core head in a direction perpendicular to the core blade body, the fifth positioning structure is arranged on the lower core head in a direction perpendicular to the core blade body, and the fourth positioning structure and the fifth positioning structure are used to control the position of the ceramic core in the direction of the wax mold chord length;

[0010] The sixth positioning structure is arranged at the bottom of the core blade in a direction parallel to the core blade body, and is used to control the position of the ceramic core in the direction of the wax mold body.

[0011] Further, the second positioning structure is arranged close to the upper core head, and the third positioning structure is arranged close to the lower core head.

[0012] Further, one end of the first positioning structure is connected to a reference point in the middle of the core blade basin as a support point, one end of the second positioning structure is connected to a reference point close to the upper core head of the core blade basin as a support point, and one end of the third positioning structure is connected to a reference point close to the lower core head of the core blade basin as a support point.

[0013] Further, the upper core head is provided with a first opening, and the lower core head is provided with a second opening.

[0014] The first opening is arranged as a plane perpendicular to the first side and the second side of the top of the core blade, the fourth positioning structure is arranged on the first side of the first opening, the second opening is arranged as a plane perpendicular to the first side and the second side of the bottom of the core blade, and the fifth positioning structure is arranged on the first side of the second opening.

[0015] Further, the first positioning structure, the second positioning structure, the third positioning structure, the fourth positioning structure, the fifth positioning structure, and the sixth positioning structure are all positioning pins.

[0016] Further, the back of the core blade is provided with a first tightening structure at a position opposite to the first positioning structure, the back of the core blade is provided with a second tightening structure at a position opposite to the second positioning structure, the back of the core blade is provided with a third tightening structure at a position opposite to the third positioning structure, the second side of the first opening is provided with a fourth tightening structure at a position opposite to the fourth positioning structure, the second side of the second opening is provided with a fifth tightening structure at a position opposite to the fifth positioning structure, and the top of the core blade is provided with a sixth tightening structure opposite to the sixth positioning structure.

[0017] Further, one end of the first tightening structure is connected to a reference point on the back side of the core tail edge as a support point, one end of the second tightening structure is connected to a reference point on the back side of the core leading edge close to the upper core head as a support point, and one end of the third tightening structure is connected to a reference point on the back side of the core leading edge close to the lower core head as a support point.

[0018] Further, the first tightening structure, the second tightening structure, the third tightening structure, the fourth tightening structure, the fifth tightening structure and the sixth tightening structure each comprise a tightening pin and a spring, and the spring is sleeved on the tightening pin.

[0019] Further, each of the first positioning structure, the second positioning structure, the third positioning structure, the fourth positioning structure, the fifth positioning structure and the sixth positioning structure is provided with a positioning adjusting knob, the positioning adjusting knob is rotationally connected with an adjusting panel through a thread, and the adjusting panel is provided with an adjusting scale at each of the positioning adjusting knobs.

[0020] The application further provides a use method of the turbine blade casting mold, which comprises the following steps:

[0021] The theoretical coordinate values of each positioning reference point of the first positioning structure, the second positioning structure, the third positioning structure, the fourth positioning structure, the fifth positioning structure and the sixth positioning structure connected with the ceramic core are respectively acquired;

[0022] The size of the ceramic core is detected according to the theoretical coordinate values of each positioning reference point;

[0023] According to the size detection result of the ceramic core and the deviation value of each tightening reference point theoretical coordinate of the first tightening structure, the second tightening structure, the third tightening structure, the fourth tightening structure, the fifth tightening structure and the sixth tightening structure connected with the ceramic core, the positions of the first positioning structure, the second positioning structure, the third positioning structure, the fourth positioning structure, the fifth positioning structure and the sixth positioning structure are adjusted, and the deviation value of all the tightening reference point theoretical coordinates is evenly distributed.

[0024] The application has the following beneficial effects:

[0025] The turbine blade casting mold of the application is provided with six positioning structures on the ceramic core, the six-point positioning method is combined with the core control according to the casting drawing, the core lining is cancelled, the position of the core is ensured, the wall thickness and the inner cavity size are solved, the influence of human operation is reduced, the consistency of the inner cavity size of the casting is ensured, and the blade qualification rate is improved.

[0026] Other features and advantages of the application will be set forth in the following description, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and other advantages of the application can be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained based on these drawings without creative labor.

[0028] Figure 1 The installation schematic diagram of the ceramic core and the positioning structure according to the embodiment of the present application is shown.

[0029] Figure 2 The installation schematic diagram of the ceramic core and the positioning structure according to the embodiment of the present application is shown. Figure 1 The partial enlarged view of A in FIG. 1 is shown.

[0030] Figure 3 The partial enlarged view of B in FIG. 1 is shown. Figure 1 The partial enlarged view of B in FIG. 1 is shown.

[0031] Figure 4 The installation schematic diagram of the ceramic core and the positioning structure according to the embodiment of the present application is shown.

[0032] Figure 5 The installation schematic diagram of the positioning adjusting knob and the adjusting panel according to the embodiment of the present application is shown.

[0033] Figure 6 The partial enlarged view of C in FIG. 1 is shown. Figure 5 The partial enlarged view of C in FIG. 1 is shown.

[0034] In the figure: 1, ceramic core; 101, upper core head; 102, lower core head; 103, core blade body; 104, core blade top; 105, core blade bottom; 106, core blade basin; 107, core blade back; 108, core front edge; 109, core tail edge; 4, first positioning structure; 5, second positioning structure; 6, third positioning structure; 7, fourth positioning structure; 8, fifth positioning structure; 9, sixth positioning structure; 1011, first opening; 1021, second opening; 10, first clamping structure; 11, second clamping structure; 12, third clamping structure; 13, fourth clamping structure; 14, fifth clamping structure; 15, sixth clamping structure; 16, clamping pin; 17, spring; 18, positioning adjusting knob; 19, adjusting panel; 20, adjusting scale; 21, positioning 0 point. DETAILED DESCRIPTION

[0035] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely explain the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0036] It should be noted that the terms "first", "second", and the like in the present application are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so as to implement the embodiments of the present application described herein. In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship shown in the drawings.

[0037] The present application provides a turbine blade casting mold and a method for using the same, which solves the problems of wall thickness and inner cavity size of hollow blade, can control the core according to the casting drawing, cancel the core lining, ensure the position of the core, solve the problems of wall thickness and inner cavity size, reduce the influence of human operation, ensure the consistency of the inner cavity size of the casting, and improve the blade qualification rate.

[0038] As shown in Figure 1 and Figure 4 , a turbine blade casting mold includes a ceramic core 1, which includes an upper core head 101, a lower core head 102, a core blade body 103, a core blade tip 104, a core blade bottom 105, a core blade pan 106, a core blade back 107, a core leading edge 108, and a core trailing edge 109.

[0039] The upper core head 101 is arranged at the upper part of the core blade tip 104, and the lower core head 102 is arranged at the lower part of the core blade bottom 105.

[0040] The core blade pan 106 is provided with a first positioning structure 4 near the core trailing edge 109, and is provided with a second positioning structure 5 and a third positioning structure 6 near the core trailing edge 108, for example, the second positioning structure 5 is arranged near the upper core head 101, and the third positioning structure 6 is arranged near the lower core head 102, the first positioning structure 4, the second positioning structure 5, and the third positioning structure 6 are used to control the position of the ceramic core 1 in the direction of the wax mold pan back.

[0041] For example, one end of the first positioning structure 4 is connected with the reference point of the middle part of the core blade 106 as a support point, that is, the gap between the theoretical zero position of the first positioning structure 4 and the ceramic core 1 is designed as 0 mm; one end of the second positioning structure 5 is connected with the reference point of the core blade 106 close to the upper core head 101 as a support point, that is, the gap between the theoretical zero position of the second positioning structure 5 and the ceramic core 1 is designed as 0 mm; one end of the third positioning structure 6 is connected with the reference point of the core blade 106 close to the lower core head 102 as a support point, that is, the gap between the theoretical zero position of the third positioning structure 6 and the ceramic core 1 is designed as 0 mm.

[0042] As shown in Figure 1 and Figure 2 , the fourth positioning structure 7 is arranged on the upper core head 101 in the direction perpendicular to the core blade body 103, as shown in Figure 1 and Figure 3 , the fifth positioning structure 8 is arranged on the lower core head 102 in the direction perpendicular to the core blade body 103, and the fourth positioning structure 7 and the fifth positioning structure 8 are used to control the position of the ceramic core 1 in the chord direction of the wax mold.

[0043] The sixth positioning structure 9 is arranged at the core blade bottom 105 in the direction parallel to the core blade body 103, and the sixth positioning structure 9 is used to control the position of the ceramic core 1 in the direction of the core blade body.

[0044] For example, the first positioning structure 4, the second positioning structure 5, the third positioning structure 6, the fourth positioning structure 7, the fifth positioning structure 8 and the sixth positioning structure 9 are all positioning pins.

[0045] As shown in Figure 2 , for example, the first opening 1011 is arranged on the upper core head 101, as shown in Figure 3 , the second opening 1021 is arranged on the lower core head 102, and the ceramic core 1 is connected with the inner cavity of the wax mold through the first opening 1011 and the second opening 1021 respectively.

[0046] The first opening 1011 is arranged as a plane perpendicular to the first side and the second side of the core blade top 104, the fourth positioning structure 7 is arranged on the first side of the first opening 1011, and the center line of the fourth positioning structure 7 is perpendicular to the first side of the first opening 1011.

[0047] The second opening 1021 is arranged as a plane perpendicular to the first side and the second side of the core blade bottom 105, the fifth positioning structure 8 is arranged on the first side of the second opening 1021, and the center line of the third positioning structure 6 is perpendicular to the first side of the second opening 1021.

[0048] The present invention designs the shape and size of the upper core head 101 and the lower core head 102 according to the six-point positioning requirements. The sides of the first opening 1011 of the upper core head 101 and the second opening 1021 of the lower core head 102 are designed as planes for positioning.

[0049] like Figure 4 As shown, for example, the core blade back 107 is provided with a first clamping structure 10 at a position opposite to the first positioning structure 4. One end of the first clamping structure 10 is connected to the blade back side reference point at the core tail edge 109 as a support point.

[0050] The core blade back 107 is provided with a second clamping structure 11 at a position opposite to the second positioning structure 5. One end of the second clamping structure 11 is connected to a reference point near the upper core head 101 on the blade back side of the core leading edge 108 as a support point.

[0051] The core blade back 107 is provided with a third clamping structure 12 at a position opposite to the third positioning structure 6. One end of the third clamping structure 12 is connected to a reference point near the lower core head 102 on the blade back side of the core leading edge 108 as a support point.

[0052] like Figure 2 As shown, for example, a fourth clamping structure 13 is provided on the second side of the first opening 1011 at a position opposite to the fourth positioning structure 7, and the center line of the fourth clamping structure 13 is perpendicular to the second side of the first opening 1011.

[0053] like Figure 3 As shown, a fifth clamping structure 14 is provided on the second side of the second opening 1021 at a position opposite to the fifth positioning structure 8, and the center line of the fifth clamping structure 14 is perpendicular to the second side of the second opening 1021. A sixth clamping structure 15 is provided at the top 104 of the core blade opposite to the sixth positioning structure 9.

[0054] For example, the first clamping structure 10, the second clamping structure 11, the third clamping structure 12, the fourth clamping structure 13, the fifth clamping structure 14, and the sixth clamping structure 15 all include clamping pins 16 and springs 17. The springs 17 are sleeved on the clamping pins 16, and the clamping degree of the ceramic core 1 is controlled by the springs 17. Different types of springs 17 are used to adjust the clamping force according to actual needs, preventing the ceramic core 1 from breaking during wax molding due to excessive force.

[0055] For example, positioning adjustment knobs 18 are provided on the first positioning structure 4, the second positioning structure 5, the third positioning structure 6, the fourth positioning structure 7, the fifth positioning structure 8, and the sixth positioning structure 9. Figure 5 As shown, the positioning adjustment knob 18 is rotatably connected to the adjustment panel 19 via a thread, as... Figure 6As shown, the adjustment panel 19 is provided with an adjustment scale 20 at each positioning adjustment knob 18.

[0056] The first positioning structure 4, the second positioning structure 5, the third positioning structure 6, the fourth positioning structure 7, the fifth positioning structure 8 and the sixth positioning structure 9 are in the theoretical 0 position, the groove on the corresponding positioning adjustment knob 18 is flush with the positioning 0 point 21 of the adjustment scale 20, and the adjustment position is easy to return to zero. The adjustment scale 20 is designed according to the thread pitch of the positioning adjustment knob 18, and one rotation of the positioning adjustment knob 18 is the distance of one rotation of the adjustment scale 20.

[0057] Since the ceramic core 1 cannot be prepared to meet the theoretical value design, the profile may be thicker or thinner, and the application also provides a use method of the turbine blade casting mold to ensure that the cast blade wall thickness and inner cavity meet the drawing tolerance requirements.

[0058] A use method of the turbine blade casting mold, comprising the following steps:

[0059] S1, respectively, obtain the theoretical coordinate value of each positioning reference point of the first positioning structure 4, the second positioning structure 5, the third positioning structure 6, the fourth positioning structure 7, the fifth positioning structure 8 and the sixth positioning structure 9 connected with the ceramic core 1, specifically as follows:

[0060] Obtain the theoretical coordinate value of the reference point A1 connected with the ceramic core 1 of the first positioning structure 4, the theoretical coordinate value of the reference point A2 connected with the ceramic core 1 of the second positioning structure 5, the theoretical coordinate value of the reference point A3 connected with the ceramic core 1 of the third positioning structure 6, the theoretical coordinate value of the reference point B4 connected with the ceramic core 1 of the fourth positioning structure 7, the theoretical coordinate value of the reference point B5 connected with the ceramic core 1 of the fifth positioning structure 8, and the theoretical coordinate value of the reference point C6 connected with the ceramic core 1 of the sixth positioning structure 9.

[0061] S2, according to the theoretical coordinate value of each positioning reference point, detect the size of the ceramic core 1, specifically as follows:

[0062] According to the theoretical coordinate value of the reference point A1, the theoretical coordinate value of the reference point A2, the theoretical coordinate value of the reference point A3, the theoretical coordinate value of the reference point B4, the theoretical coordinate value of the reference point B5 and the theoretical coordinate value of the reference point C6, the size of the ceramic core 1 is detected.

[0063] S3, according to the size detection result of the ceramic core 1, the deviation value of each clamping reference point theoretical coordinate of the first clamping structure 10, the second clamping structure 11, the third clamping structure 12, the fourth clamping structure 13, the fifth clamping structure 14 and the sixth clamping structure 15 connected with the ceramic core 1, the positions of the first positioning structure 4, the second positioning structure 5, the third positioning structure 6, the fourth positioning structure 7, the fifth positioning structure 8 and the sixth positioning structure 9 are adjusted, and the deviation value of all clamping reference point theoretical coordinates is divided, and the specific method is as follows:

[0064] According to the size detection result of the ceramic core 1, the deviation value of the theoretical coordinate of the reference point A11 connected with the ceramic core 1 of the first clamping structure 10, the deviation value of the theoretical coordinate of the reference point A21 connected with the ceramic core 1 of the second clamping structure 11, the deviation value of the theoretical coordinate of the reference point A31 connected with the ceramic core 1 of the third clamping structure 12, the deviation value of the theoretical coordinate of the reference point B41 contacted with the ceramic core 1 of the fourth clamping structure 13, the deviation value of the theoretical coordinate of the reference point B51 contacted with the ceramic core 1 of the fifth clamping structure 14, and the deviation value of the theoretical coordinate of the reference point C61 contacted with the ceramic core 1 of the sixth clamping structure 15, the positions of the first positioning structure 4, the second positioning structure 5, the third positioning structure 6, the fourth positioning structure 7, the fifth positioning structure 8 and the sixth positioning structure 9 are adjusted, and the deviation value of the theoretical coordinate of the reference point A11, the deviation value of the theoretical coordinate of the reference point A21, the deviation value of the theoretical coordinate of the reference point A31, the deviation value of the theoretical coordinate of the reference point B41, the deviation value of the theoretical coordinate of the reference point B51 and the deviation value of the theoretical coordinate of the reference point C61 are divided, so that the wall thickness and the inner cavity meet the drawing tolerance requirements.

[0065] The casting mold of the present application adopts six-point positioning for position control, and the ceramic core 1 is positioned in the vertical direction of the core (the back direction of the wax mold basin), the chord length direction (the chord length direction of the wax mold) and the blade direction (the blade direction of the wax mold), and the position of the ceramic core 1 is controlled by six-point positioning, and the detection of the ceramic core 1 also adopts the same six-point positioning, so as to establish the size of the ceramic core 1 and the position relationship of the wax core. At the same time, according to the size detection result of the core, the positioning position is fine-tuned considering the thickness size requirement of the back side wall of the basin, so as to ensure the uniformity of the thickness size of the back wall of the casting basin and meet the drawing requirements.

[0066] Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A turbine blade casting mold characterized by, The application relates to a ceramic core (1) comprising an upper core head (101), a lower core head (102), a core web (103), a core tip (104), a core base (105), a core back (107), a core front edge (108) and a core tail edge (109); The upper core head (101) is arranged above the core tip (104), the lower core head (102) is arranged below the core base (105), the core web (103) is provided with a first positioning structure (4) near the core tail edge (109), the core base (106) is provided with a second positioning structure (5) and a third positioning structure (6) near the core front edge (108), and the first positioning structure (4), the second positioning structure (5) and the third positioning structure (6) are used for controlling the position of the ceramic core (1) in the direction of the back of a wax mold base; A fourth positioning structure (7) is arranged on the upper core head (101) in a direction perpendicular to the core web (103), and a fifth positioning structure (8) is arranged on the lower core head (102) in a direction perpendicular to the core web (103), wherein the fourth positioning structure (7) and the fifth positioning structure (8) are used for controlling the position of the ceramic core (1) in the direction of the chord length of a wax mold; A sixth positioning structure (9) is arranged on the core base (105) in a direction parallel to the core web (103), and the sixth positioning structure (9) is used for controlling the position of the ceramic core (1) in the direction of the core web; A first opening (1011) is arranged on the upper core head (101), and a second opening (1021) is arranged on the lower core head (102); the first opening (1011) is arranged as a plane on the first side and the second side of the core tip (104) in a direction perpendicular to the core tip (104), the fourth positioning structure (7) is arranged on the first side of the first opening (1011), and the second opening (1021) is arranged as a plane on the first side and the second side of the core base (105) in a direction perpendicular to the core base (105), and the fifth positioning structure (8) is arranged on the first side of the second opening (1021); The core back (107) is provided with a first tightening structure (10) at a position opposite to the first positioning structure (4), the core back (107) is provided with a second tightening structure (11) at a position opposite to the second positioning structure (5), the core back (107) is provided with a third tightening structure (12) at a position opposite to the third positioning structure (6), the second side of the first opening (1011) is provided with a fourth tightening structure (13) at a position opposite to the fourth positioning structure (7), the second side of the second opening (1021) is provided with a fifth tightening structure (14) at a position opposite to the fifth positioning structure (8), and the core tip (104) is provided with a sixth tightening structure (15) opposite to the sixth positioning structure (9).

2. The turbine blade casting mold of claim 1, wherein, The second positioning structure (5) is arranged close to the upper core pin (101), and the third positioning structure (6) is arranged close to the lower core pin (102).

3. The turbine blade casting mold of claim 1, wherein, One end of the first positioning structure (4) is connected to a reference point in the middle of the core leaf basin (106) as a support point, one end of the second positioning structure (5) is connected to a reference point close to the upper core pin (101) of the core leaf basin (106) as a support point, and one end of the third positioning structure (6) is connected to a reference point close to the lower core pin (102) of the core leaf basin (106) as a support point.

4. A turbine blade casting mould according to any of claims 1-3, c h a r a c t e r i s e d in that The first positioning structure (4), the second positioning structure (5), the third positioning structure (6), the fourth positioning structure (7), the fifth positioning structure (8) and the sixth positioning structure (9) are all positioning pins.

5. The turbine blade casting mold of claim 1, wherein, One end of the first clamping structure (10) is connected to a reference point on the core tail edge (109) as a support point, one end of the second clamping structure (11) is connected to a reference point close to the upper core pin (101) on the core leading edge (108) as a support point, and one end of the third clamping structure (12) is connected to a reference point close to the lower core pin (102) on the core leading edge (108) as a support point.

6. The turbine blade casting mold of claim 1, wherein, The first clamping structure (10), the second clamping structure (11), the third clamping structure (12), the fourth clamping structure (13), the fifth clamping structure (14), and the sixth clamping structure (15) all include a clamping pin (16) and a spring (17), and the spring (17) is sleeved on the clamping pin (16).

7. The turbine blade casting mold of claim 1, wherein, The first positioning structure (4), the second positioning structure (5), the third positioning structure (6), the fourth positioning structure (7), the fifth positioning structure (8), and the sixth positioning structure (9) are all provided with a positioning adjusting knob (18), the positioning adjusting knob (18) is rotationally connected with an adjusting panel (19) through threads, and the adjusting panel (19) is provided with an adjusting scale (20) at each positioning adjusting knob (18).

8. A method of using a turbine blade casting mold according to any one of claims 1 to 7, characterized in that, The method comprises the following steps: The theoretical coordinate values of each positioning reference point connected with the ceramic core (1) of the first positioning structure (4), the second positioning structure (5), the third positioning structure (6), the fourth positioning structure (7), the fifth positioning structure (8), and the sixth positioning structure (9) are respectively acquired; The size of the ceramic core (1) is detected according to the theoretical coordinate values of each positioning reference point. According to the size detection result of the ceramic core (1), the deviation value of each clamping reference point theoretical coordinate of the first clamping structure (10), the second clamping structure (11), the third clamping structure (12), the fourth clamping structure (13), the fifth clamping structure (14) and the sixth clamping structure (15) connected with the ceramic core (1), the positions of the first positioning structure (4), the second positioning structure (5), the third positioning structure (6), the fourth positioning structure (7), the fifth positioning structure (8) and the sixth positioning structure (9) are adjusted, and the deviation value of all clamping reference point theoretical coordinates is divided.

Images