High-integration-level integral guider wax mold splitting and forming method

Abstract

The invention discloses a high-integration-level integral guider wax mould splitting and forming method in the technical field of precision casting, a first ring is split through a splitting surface perpendicular to the axial direction of a guider, and the outer ring part of the guider is split into an upper part and a lower part along the axial direction of the guider, namely the height direction of the outer ring; wherein the part not including the blades is the first ring, the height of the outer ring is dispersed on the first ring and the unit blades, during splicing, the situation that the welding position is shielded due to the fact that the axial height of the first ring is too high is avoided, welding and coping are simpler, meanwhile, the two sections, with the large wall thickness difference, of the outer ring of the guider are split into the two parts, and therefore welding is more convenient. When the wax mould is formed, the two parts are respectively formed and can be respectively expanded and contracted, the forming is simpler and more accurate, a second ring is split from the guider wax mould by a circumferential splitting surface coaxial with the guider wax mould, and the circumferential splitting surface does not pass through the characteristic parts of the blade and the guider inner ring, so that the characteristic of the guider inner ring is kept complete when the wax mould is formed; the welding processing difficulty is reduced, and the characteristic size of the guider inner ring is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of precision casting, and particularly to a method for splitting and forming a high-integration integral guide vane wax pattern. Background Technique

[0002] Currently, power turbines and gas turbine guide vanes used in aeroengines and gas turbines are usually formed by precision casting. The precision casting process first prepares its wax pattern, and a mold for pressing the wax pattern needs to be designed. The guide vane blades are getting thinner and more twisted, and the gap between the blades is small. The thickness difference between the inner and outer rings and the blades is large, so it is impossible to form a whole mold at one time.

[0003] Therefore, most current guide vanes basically use single blade wax patterns pressed first and then assembled and welded into a whole wax pattern on an assembly fixture. However, with the increasing integration and larger size of current guide vanes, for example, a certain type of second-stage guide vane, the height dimension of the outer ring of this guide vane in the height direction is 178 mm, and the distance from the leading edge of the blade to the top surface of the outer ring is 154.74 mm; there are 41 inclined rib plates on the inner side of the inner ring, and the wall thickness of the outer ring has a large transition in the axial direction of the guide vane. The following problems will occur when using the traditional splitting method:

[0004] 1. First of all, the wax pattern has a certain shrinkage. Especially when the size difference is large, it will lead to poor shrinkage consistency, and finally cause the wax pattern to deform and the size consistency to be poor, resulting in assembly interference.

[0005] 2. The assembled wax pattern needs to be welded, and the welded wax pattern also needs to be trimmed at the joint. The high outer ring increases the trimming amount required for the blade ring. At the same time, the trimming area will be blocked by the outer ring, and it is difficult for welding tools and grinding tools to reach.

[0006] Therefore, a new splitting and forming scheme needs to be designed for the wax pattern of this integral guide vane with large size and high outer ring. Based on this, the present invention designs a method for splitting and forming a high-integration integral guide vane wax pattern to solve the above problems. Summary of the Invention

[0007] To achieve the above object, the present invention provides the following technical solution: A method for splitting a high-integration integral guide vane wax pattern, the splitting method includes the following steps:

[0008] S11, establishing a model: Establishing a three-dimensional model of the guide vane, the model size is the same as the actual size of the guide vane, and the three-dimensional model is expanded according to the shrinkage rate from the cold wax state to the casting state to obtain the three-dimensional model of the guide vane wax pattern;

[0009] S12, splitting the first ring: Splitting out the first ring on the guide vane wax pattern with a splitting plane perpendicular to the axial direction of the guide vane wax pattern. The splitting plane is close to the blade in the axial direction of the guide vane wax pattern, and the splitting plane does not pass through the blade and the inner ring of the guide vane;

[0010] S13, Split the second ring: Split out the second ring on the guide vane wax pattern with a circumferential splitting plane coaxial with the guide vane, and the circumferential splitting plane does not pass through the characteristic parts of the blades and the inner ring of the guide vane;

[0011] S14, Split the unit blades: Split out a number of unit blades on the guide vane wax pattern using a number of profiling splitting planes that are profiled to the blades, and the profiling splitting planes do not pass through the blades;

[0012] S15, Shrinkage calculation: Select ring-shaped wax patterns of corresponding or similar sizes to simulate the first ring and the second ring, select blade wax patterns of corresponding or similar sizes to simulate the unit blades, perform wax pattern making, and respectively obtain the shrinkage rates of the first ring, the second ring, and the unit blades from hot wax to cold wax.

[0013] As a further solution of the present invention, in step S13, when splitting the second ring on the guide vane wax pattern through the circumferential splitting plane, there is a height difference between the bottom end of the circumferential splitting plane and the bottom surface of the inner ring of the guide vane, and the bottom end of the circumferential splitting plane extends horizontally towards the center of the guide vane wax pattern.

[0014] As a further solution of the present invention, when splitting the first ring, the second ring, and the unit blades, a machining allowance with a thickness of 0.1 - 0.2 mm is removed from the splitting surfaces of the first ring, the second ring, and the unit blades.

[0015] As a further solution of the present invention, in step S15, when calculating the shrinkage rate from hot wax to cold wax, select ring-shaped wax patterns of corresponding or similar sizes to simulate the first ring and the second ring, select blade wax patterns of corresponding or similar sizes to simulate the unit blades, perform the wax pattern making process, and then perform the shrinkage rate calculation. The calculation formula is

[0016]

[0017] In the formula, S is the shrinkage rate, R1 is the wax pattern size in the hot wax state, and R2 is the wax pattern size in the cold wax state.

[0018] As a further solution of the present invention, when splitting the first ring, the splitting surface is arranged at a position on the outer ring of the guide vane with machining allowance.

[0019] A method for forming a high-integration integral guide vane wax pattern, which is used to form the wax pattern split by the high-integration integral guide vane wax pattern splitting method, includes the following steps:

[0020] S21, Make the first correction ring and the second correction ring according to the cold wax sizes of the first ring and the second ring;

[0021] S22, Press the wax patterns of the second ring, the first ring, and the unit blades, and respectively place the second correction ring and the first correction ring into the second ring and the first ring, and cool and shrink to cold wax;

[0022] S23. Place the second ring with the second calibration ring into the assembly fixture, and position the angular, axial, and radial directions of the second ring through the cooperation between the second calibration ring and the assembly fixture.

[0023] S24. Place the unit blades into the assembly fixture, position the angular, axial, and radial directions of the blades through the fixture. After positioning each piece one by one, use bonding wax to spot-weld the splicing seams between the unit blades and between the unit blades and the second ring firmly.

[0024] S25. Take out the second ring and the unit blades that have been spot-welded and positioned from the assembly fixture, and weld, repair, and polish the splicing seams between several unit blades and between the unit blades and the second ring smoothly with the second calibration ring.

[0025] S26. Splice the wax mold obtained in S25 with the first ring, establish a positioning relationship between the second calibration ring and the first calibration ring, and also use bonding wax to spot-weld the splicing seam between the unit blade and the first ring firmly.

[0026] S27. Take out the second calibration ring and the first calibration ring, weld, repair, and polish the splicing seam between the first ring and the unit blade to form a guide vane wax mold.

[0027] As a further solution of the present invention, the second calibration ring is provided with a second abutting surface, and the first calibration ring is provided with a first abutting surface. The first abutting surface is used to abut against the second abutting surface to establish an axial positioning relationship between the second calibration ring and the first calibration ring.

[0028] As a further solution of the present invention, the first calibration ring includes a first calibration portion for calibrating the top end of the first ring and a second calibration portion for calibrating the bottom end of the first ring, and further includes a convex platform for abutting against the top surface of the first ring for axially positioning the first ring. The distance from the bottom surface of the second calibration portion to the bottom surface of the convex platform is greater than the axial height of the first ring.

[0029] The present invention has the following beneficial effects:

[0030] In the present invention, the first ring is split along a splitting plane perpendicular to the axis of the guide, and the outer ring part of the guide is split into upper and lower parts along the axis of the guide, that is, the height direction of the outer ring. The part that does not include the blades is the first ring. The height of the outer ring is dispersed on the first ring and the unit blades. During splicing, the welding position will not be blocked due to the excessive axial height of the first ring, and welding and grinding are simpler. At the same time, two sections with a large difference in the wall thickness of the outer ring of the guide are split into two parts. When forming the wax mold, these two parts are formed separately and can shrink separately, making the forming simpler and more accurate. A second ring is split out on the guide wax mold along a circumferential splitting plane coaxial with the guide wax mold. The circumferential splitting plane does not pass through the characteristic parts of the blades and the inner ring of the guide, so that the characteristics of the inner ring of the guide are retained intact during the formation of the wax mold, reducing the difficulty of welding processing and ensuring the dimensions of the characteristics of the inner ring of the guide.

[0031] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The following will refer to the drawings for a more detailed description of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0033] Figure 1 It is a schematic diagram of the splitting of the guide of the present invention.

[0034] Figure 2 It is a schematic diagram of the profiling splitting plane in the present invention.

[0035] Figure 3 It is a schematic diagram of the splicing of the first correction ring and the second correction ring in the present invention.

[0036] Legend:

[0037] 1. First ring; 2. Second ring; 3. Unit blade; 4. First correction ring; 41. First abutting surface; 42. First correction part; 43. Second correction part; 44. Boss; 5. Second correction ring; 51. Second abutting surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] The following will describe the embodiments of the present invention in detail with reference to the drawings. However, the present invention can be implemented in many different ways defined and covered by the following.

[0039] Please refer to Figures 1-3 , the present invention provides a technical solution: a method for splitting a high-integration overall guide wax mold. The splitting method includes the following steps:

[0040] S11, Model establishment: Establish a 3D model of the guide vane. The model size is the same as the actual size of the guide vane, and the 3D model is scaled according to the shrinkage rate from the cold wax state to the casting state to obtain the 3D model of the guide vane wax pattern;

[0041] First, establish a 3D model of the guide vane, and then scale the 3D model of the guide vane according to the shrinkage rate from the cold wax state to the casting state. In this way, the 3D model of the guide vane wax pattern can be obtained, and the size of the 3D model of the guide vane wax pattern is the size of the guide vane wax pattern in the cold wax state. After obtaining the 3D model of the guide vane wax pattern, the subsequent splitting process can be started;

[0042] S12, Split the first ring 1: Split out the first ring 1 on the guide vane wax pattern with a splitting plane perpendicular to the axial direction of the guide vane wax pattern. The splitting plane is as close as possible to the blade in the axial direction of the guide vane wax pattern, and the splitting plane does not pass through the blade and the inner ring of the guide vane;

[0043] As Figure 1 shown, split out the first ring 1 on the guide vane wax pattern through a splitting plane perpendicular to the axial direction of the guide vane wax pattern. The outer ring part of the guide vane in the guide vane wax pattern is split into upper and lower parts along the axial direction of the guide vane. The part that does not contain the blade is the first ring 1. When splicing, it is simpler and will not block the welding position due to the excessive axial height of the first ring 1. At the same time, the two sections with a large wall thickness difference of the outer ring of the guide vane are split into two parts. When forming the wax pattern, these two parts are formed separately and can be scaled separately, making the forming simpler and more accurate;

[0044] At the same time, when splitting the first ring 1, set the splitting plane at the position with machining allowance on the outer ring of the guide vane. In this way, after welding and grinding, when removing the machining allowance on the outer ring of the guide vane, the welding position can also be ground to ensure that the final surface quality of the guide vane can meet the requirements.

[0045] S13, Split the second ring 2: Split out the second ring 2 on the guide vane wax pattern with a circumferential splitting plane coaxial with the guide vane wax pattern. The circumferential splitting plane does not pass through the blade and the characteristic parts of the inner ring of the guide vane;

[0046] To prevent damage to the integrity of the surface characteristics of the inner ring part of the guide vane in the guide vane wax pattern when splitting the subsequent unit blade 3, it is necessary to first split out the second ring 2 on the guide vane wax pattern through a circumferential splitting plane coaxial with the guide vane wax pattern to keep the characteristics of the inner ring of the guide vane intact during the forming of the wax pattern and reduce the welding and processing difficulty;

[0047] S14, Split the unit blade 3: Split out several unit blades 3 on the 3D model of the guide vane wax pattern with several profiling splitting planes that are profiled to the blade. The profiling splitting plane does not pass through the blade;

[0048] After both the first ring 1 and the second ring 2 are split, there is still a circle of blades left on the guide vane wax pattern, as Figure 2 shown. At this time, the remaining circle of blades is split into several unit blades 3 through a profiling split surface that profiles the blades. Each unit blade 3 contains one blade. After splitting into unit blades 3, it is simpler to form the wax pattern and the forming accuracy is higher;

[0049] S15. Shrinkage calculation: Select a ring-shaped wax pattern with corresponding or similar dimensions to simulate the first ring 1 and the second ring 2, and select a blade wax pattern with corresponding or similar dimensions to simulate the unit blade 3 to make the wax patterns, and obtain the shrinkage rates of the first ring 1, the second ring 2, and the unit blade 3 from hot wax to cold wax respectively;

[0050] After splitting the guide vane wax pattern into the first ring 1, the second ring 2, and the unit blade 3, the shrinkage rates of the first ring 1, the second ring 2, and the unit blade 3 from hot wax to cold wax can be calculated separately, so as to release shrinkage according to their respective shrinkage rates when pressing the wax patterns of the first ring 1, the second ring 2, and the unit blade 3, so as to ensure that the first ring 1, the second ring 2, and the unit blade 3 can all reach the dimensions required for cold wax, and separately control the shrinkage release amounts of the first ring 1, the second ring 2, and the unit blade 3, so that the dimensions of each part of the finally formed guide vane wax pattern all meet the dimensional requirements, the forming is simpler, and the dimensional control is more accurate.

[0051] In this method, by splitting the guide vane wax pattern into the first ring 1, the second ring 2, and the unit blade 3, the first ring 1, the second ring 2, and the unit blade 3 are formed separately when forming the wax pattern. When splitting the first ring 1, the guide vane wax pattern is split with a split surface perpendicular to the axial direction of the guide vane wax pattern, and the guide vane wax pattern is divided into two parts in the axial direction. The part that does not contain blades is the first ring 1, so that the splicing seam of the first ring 1 is at one end of the axis of the first ring 1 and will not be blocked by the first ring 1 itself during welding. At the same time, it also makes the two parts with a large difference in the thickness of the outer ring of the guide vane form wax patterns separately, which is simpler when controlling the shrinkage rate, the forming is simpler, the dimensional control is more accurate, and at the same time, subsequent welding and grinding after welding are also more convenient, so as to improve the dimensional accuracy and surface quality of the guide vane wax pattern and the product quality of the final casting.

[0052] Specifically, in step S13, when splitting the second ring 2 on the guide vane wax pattern through the circumferential split surface, there is a height difference between the bottom end of the circumferential split surface and the bottom surface of the inner ring of the guide vane, and the bottom end of the circumferential split surface extends horizontally towards the center of the guide vane wax pattern to split out the second ring 2 on the guide vane wax pattern;

[0053] When splitting the inner ring through the circumferential split surface, there is a height difference between the bottommost end of the circumferential split surface and the bottom end of the inner ring of the guide vane. That is to say, the circumferential split surface does not directly connect the top surface and the bottom surface of the inner ring of the guide vane, and the bottom end of the circumferential split surface extends horizontally towards the center of the guide vane wax pattern, asFigures 1-3 As shown, the cross-section of the circumferential splitting surface is L-shaped, and the side of the unit blade 3 for welding with the inner ring is also L-shaped, leaving a reference surface for the subsequent positioning of the unit blade 3, which is convenient for positioning the radial position of the unit blade 3 during the subsequent welding process.

[0054] Specifically, when splitting the first ring 1, the second ring 2, and the unit blade 3, a machining allowance with a thickness of 0.1 - 0.2 mm is removed from the splitting surfaces of the first ring 1, the second ring 2, and the unit blade 3;

[0055] After splitting the first ring 1, the second ring 2, and the unit blade 3, the splitting surface during splitting is the splicing surface during subsequent welding. When a machining allowance with a thickness of 0.1 - 0.2 mm is removed from their splitting surfaces when splitting the first ring 1, the second ring 2, and the unit blade 3, a splicing seam of 0.2 - 0.4 mm exists between the splitting surfaces when welding the first ring 1, the second ring 2, and the unit blade 3. When there is no splicing seam between the splitting surfaces, the bonding wax may not be able to enter between the splitting surfaces normally. In this way, after welding is completed, although the splitting surfaces seem to be welded together, their interiors are still in a separated state because the bonding wax cannot enter. Therefore, a machining allowance with a thickness of 0.1 - 0.2 mm is removed from the splitting surfaces of the first ring 1, the second ring 2, and the unit blade 3 so that the bonding wax during welding can be normally filled between the splitting surfaces to ensure the welding quality.

[0056] Specifically, in step S15, when calculating the shrinkage rate from hot wax to cold wax, ring-shaped wax molds with corresponding or similar sizes are selected to simulate the first ring 1 and the second ring 2, and blade wax molds with corresponding or similar sizes are selected to simulate the unit blade 3. The wax mold manufacturing process is carried out, and then the shrinkage rate is calculated. The calculation formula is

[0057]

[0058] In the formula, S is the shrinkage rate, R1 is the size of the wax mold in the state of hot wax, and R2 is the size of the wax mold in the state of cold wax;

[0059] When using ring-shaped wax molds with similar sizes to simulate the first ring 1 and the second ring 2 and selecting blade wax molds with similar sizes to simulate the unit blade 3, multiple ring-shaped wax molds and blade wax molds with similar sizes can be selected to carry out the wax mold manufacturing process multiple times to obtain the range value of the shrinkage rate;

[0060] When calculating the shrinkage rates of the outer ring, inner ring, and unit blade 3, ring-shaped wax patterns of corresponding sizes can be selected to simulate the first ring 1 and the second ring 2 respectively, and a blade wax pattern of a corresponding or similar size can be selected to simulate the unit blade 3. Then, the wax pattern manufacturing process is carried out. Subsequently, the size R1 in the hot wax state and the size R2 in the cold wax state are measured respectively. The shrinkage rate of the wax pattern at this size is calculated through the shrinkage rate calculation formula. Thus, the shrinkage rates of the first ring 1, the second ring 2, and the unit blade 3 from hot wax to cold wax can be obtained respectively. Subsequently, the first ring 1, the second ring 2, and the unit blade 3 are shrunk according to this shrinkage rate to obtain the sizes of the first ring 1, the second ring 2, and the unit blade 3 in the hot wax state;

[0061] A wax mold forming method for a highly integrated integral guide vane, which is used to form the wax mold split by the wax mold splitting method for a highly integrated integral guide vane, includes the following steps:

[0062] S21, fabricate the first correction ring 4 and the second correction ring 5 according to the cold wax sizes of the first ring 1 and the second ring 2;

[0063] S22, press the wax molds of the second ring 2, the first ring 1, and the unit blade 3. Place the second correction ring 5 and the first correction ring 4 into the second ring 2 and the first ring 1 respectively, and cool and shrink to cold wax. During the process of the first ring 1 and the second ring 2 changing from hot wax to cold wax, the shrinkage of the first ring 1 and the second ring 2 is restricted by the first correction ring 4 and the second correction ring 5 to prevent excessive shrinkage of the first ring 1 and the second ring 2 during the cooling process, so as to ensure the sizes of the first ring 1 and the second ring 2;

[0064] S23, place the second ring 2 with the second correction ring into the assembly fixture, and position the angular, axial, and radial directions of the second ring 2 through the cooperation of the second correction ring 5 and the assembly fixture;

[0065] S24, place the unit blade 3 into the assembly fixture, and position the angular, axial, and radial directions of the blade through the fixture. After positioning each piece one by one, use bonding wax to spot-weld the splicing seams between the unit blades 3 and between the unit blade 3 and the second ring 2 firmly;

[0066] S25, take out the second ring 2 and the unit blade 3 that have been spot-welded and positioned from the assembly fixture, and weld, repair, and polish the splicing seams between several unit blades 3 and between the unit blade 3 and the second ring 2 smoothly together with the second correction ring 5. In the case where the first ring 1 is not yet connected to the unit blade 3, first weld between the unit blades 3 and between the unit blade 3 and the second ring 2. During welding, it will not be blocked by the first ring 1, and the welding is more convenient;

[0067] S26. Splice the wax mold obtained in S25 with the first ring 1 together, establish a positioning relationship between the second calibration ring 5 and the first calibration ring 4. Similarly, firmly spot-weld the splicing seam between the unit blade 3 and the first ring 1 with adhesive wax. The wax mold obtained in step S25 is the second ring 2 and the unit blade 3 welded together. At this time, the calibration ring inside the second ring 2 has not been disassembled. The positioning relationship can be established through the calibration ring of the first ring 1 and the calibration ring of the second ring 2, and then firmly spot-weld the first ring 1 and the unit blade 3 with adhesive wax. In this forming method, both the first ring 1 and the second ring 2 are spot-welded or welded to the unit blade 3 with the built-in calibration ring. Through the calibration ring, not only can the sizes of the first ring 1 and the second ring 2 be restricted, but also the first ring 1, the second ring 2 and the unit blade 3 can be positioned during welding, making the forming size more accurate and the forming process simpler;

[0068] S27. Remove the second calibration ring 5 and the first calibration ring 4, and perform butt welding, repair and grinding on the splicing seam between the first ring 1 and the unit blade 3 to form a guide vane wax mold.

[0069] As Figure 3 shown, since the splitting surface of the first ring 1 is located at the bottom end, the first calibration ring 4 does not interfere with the welding between the first ring 1 and the unit blade 3. Similarly, the second calibration ring 5 does not interfere with the welding between the second ring 2 and the unit blade 3. The sizes of the first ring 1 and the second ring 2 can be maintained by using the first calibration ring 4 and the second calibration ring 5 during the forming process. At the same time, the first ring 1 and the second ring 2 can be indirectly positioned by positioning the first calibration ring 4 and the second calibration ring 5, reducing the use of assembly jigs.

[0070] Specifically, the second calibration ring 5 is provided with a second abutting surface 51, and the first calibration ring 4 is provided with a first abutting surface 41. The first abutting surface 41 is used to abut against the second abutting surface 51 to establish an axial positioning relationship between the second calibration ring 5 and the first calibration ring 4;

[0071] Put the second ring 2 on the second calibration ring 5, put the first ring 1 on the first calibration ring 4, and then abut the first abutting surface 41 on the first calibration ring 4 and the second abutting surface 51 on the second calibration ring 5 to establish an axial positioning relationship between the first calibration ring 4 and the second calibration ring 5, and indirectly establish an axial positioning relationship between the first ring 1 and the second ring 2.

[0072] Specifically, the first calibration ring 4 includes a first calibration portion 42 for calibrating the top end of the first ring 1 and a second calibration portion 43 for calibrating the bottom end of the first ring 1. It also includes a convex platform 44 for abutting against the top surface of the first ring 1 to axially position the first ring 1. The distance from the bottom surface of the second calibration portion 43 to the bottom surface of the convex platform 44 is greater than the axial height of the first ring 1;

[0073] As Figure 1As shown, when the bottom surface of the boss 44 abuts against the top surface of the first ring 1, the second calibration portion 43 not only abuts against the inner cavity at the bottom end of the first ring 1, but also the bottom end of the second calibration portion 43 protrudes downward from the bottom end of the first ring 1. In this way, when establishing the axial positioning relationship between the first ring 1 and the second ring 2 through the first calibration ring 4 and the second calibration ring 5, by abutting the second calibration portion 43 against the inner cavity of the outer ring of the unit blade 3, the radial positioning relationship between the first ring 1 and the second ring 2 can also be established.

[0074] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for disassembling a wax mold of a highly integrated integral guide, characterized in that: The splitting method comprises the following steps: S11, establishing a model: establishing a three-dimensional model of the guide, the size of the model being the same as the actual size of the guide, and expanding and contracting the three-dimensional model according to the shrinkage rate from the cold wax state to the casting state, to obtain a three-dimensional model of the guide wax mold; S12, splitting the first ring (1): splitting the first ring (1) on the guide wax model with a splitting plane perpendicular to the axial direction of the guide wax model, the splitting plane is close to the blade in the axial direction of the guide wax model, and the splitting plane does not pass through the blade and the guide inner ring; S13, splitting the second ring (2): splitting the second ring (2) on the guide wax model with a circumferential splitting surface coaxial with the guide, wherein the circumferential splitting surface does not pass through the blades and characteristic parts of the inner ring of the guide; S14, splitting the unit blades (3): using a plurality of profiling splitting surfaces that are profiling the blades to split a plurality of unit blades (3) on the guide wax model, wherein the profiling splitting surfaces do not pass through the blades; S15, shrinkage calculation: select annular wax models of corresponding or similar sizes to simulate the first ring (1) and the second ring (2), select blade wax models of corresponding or similar sizes to simulate the unit blade (3), and make wax models to obtain the shrinkage rates of the first ring (1), the second ring (2) and the unit blade (3) from hot wax to cold wax.

2. A method for disassembling a wax mold of a highly integrated integral guide according to claim 1, characterized in that: In step S13, when the second ring (2) is split on the guide wax model through the circumferential splitting surface, there is a height difference between the bottom end of the circumferential splitting surface and the bottom surface of the guide inner ring, and the bottom end of the circumferential splitting surface extends horizontally toward the center of the guide wax model.

3. The method for disassembling a wax mold of a highly integrated integral guide according to claim 1, characterized in that: When the first ring (1), the second ring (2) and the unit blade (3) are separated, a thickness processing amount of 0.1-0.2 mm is removed from the separation surfaces of the first ring (1), the second ring (2) and the unit blade (3).

4. The method for disassembling a wax mold of a highly integrated integral guide according to claim 1, characterized in that: In step S15, when calculating the shrinkage rate from hot wax to cold wax, a ring wax mold of corresponding or similar size is selected to simulate the first ring (1) and the second ring (2), and a blade wax mold of corresponding or similar size is selected to simulate the unit blade (3), and the wax mold making process is performed, and then the shrinkage rate is calculated. The calculation formula is: Where S is the shrinkage rate, R1 is the size of the wax mold in the hot wax state, and R2 is the size of the wax mold in the cold wax state.

5. The method for disassembling a wax mold of a highly integrated integral guide according to claim 1, characterized in that: When splitting the first ring (1), the splitting surface is set at a position on the outer ring of the guide where there is a machining allowance.

6. A method for molding a wax mold of a high-integrated integral guide, used for molding a wax mold split by the method for splitting a wax mold of a high-integrated integral guide according to claim 1, characterized in that: The following steps are involved: S21, manufacturing a first correction ring (4) and a second correction ring (5) according to the cold wax sizes of the first ring (1) and the second ring (2); S22, pressing the wax molds of the second ring (2), the first ring (1) and the unit blade (3), placing the second correction ring (5) and the first correction ring (4) into the second ring (2) and the first ring (1) respectively, and cooling and shrinking them to cold wax; S23, placing the second ring (2) with the second correction ring into an assembly fixture, and positioning the second ring (2) in the angular, axial and radial directions by means of the second correction ring (5) cooperating with the assembly fixture; S24, placing the unit blades (3) into an assembly fixture, positioning the blades in the angular, axial and radial directions by means of the fixture, and after positioning each piece, spot welding the joints between the unit blades (3) and between the unit blades (3) and the second ring (2) with adhesive wax to securely secure them; S25, taking out the second ring (2) and the unit blade (3) which have been spot welded and positioned from the assembly fixture, and welding the joints between the unit blades (3) and between the unit blade (3) and the second ring (2) together with the second correction ring (5), and repairing and polishing them to make them smooth; S26, splicing the wax model obtained in S25 with the first ring (1), using the second correction ring (5) to establish a positioning relationship with the first correction ring (4), and also spot welding the splicing seam between the unit blade (3) and the first ring (1) firmly by using adhesive wax; S27, taking out the second correction ring (5) and the first correction ring (4), welding, repairing and polishing the joint between the first ring (1) and the unit blade (3), and forming a wax model of the guide.

7. A wax mold forming method for a highly integrated integral guide according to claim 6, characterized in that: The second correction ring (5) is provided with a second abutment surface (51), and the first correction ring (4) is provided with a first abutment surface (41), wherein the first abutment surface (41) is used to abut against the second abutment surface (51) to establish an axial positioning relationship between the second correction ring (5) and the first correction ring (4).

8. The method for forming a wax mold of a highly integrated integral guide according to claim 7, characterized in that: The first correction ring (4) comprises a first correction portion (42) for correcting the top end of the first ring (1) and a second correction portion (43) for correcting the bottom end of the first ring (1), and also comprises a boss (44) for abutting against the top surface of the first ring (1) for axially positioning the first ring (1), wherein the distance from the bottom surface of the second correction portion (43) to the bottom surface of the boss (44) is greater than the axial height of the first ring (1).

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