A turbine blade labyrinth one-time forming device and processing method

Abstract

The present invention relates to a turbine blade labyrinth one-time forming device and a processing method, belonging to the field of aviation device processing, and comprising: a roller, a grinding wheel, a turbine blade, two sliders, two first pressing bolts, a second pressing bolt, a base and a fixing block. The roller is slidably connected to the grinding wheel. The two sliders are respectively connected to the two first pressing bolts. The upper and lower ends of the turbine blade are respectively detachably connected to the slider and the fixing block. The fixing block is connected to the second pressing bolt. The grinding wheel is arranged above the turbine blade and is slidably connected to the upper end of the turbine blade. The turbine blade, the slider, the first pressing bolt, the second pressing bolt and the fixing block are all arranged on the base. By using the roller to dress the grinding wheel, and then using the grinding wheel, multiple labyrinths can be processed at one time, which improves the processing efficiency of the turbine blade and also ensures the processing accuracy of the labyrinth.

Description

Technical Field

[0001] The present invention relates to the field of aviation device processing, and particularly relates to a device and a processing method for one-time forming of labyrinth teeth of a turbine blade. Background Art

[0002] Turbine components are one of the components with the largest thermal load and mechanical load in an aeroengine. Therefore, among turbine components, the working environment of turbine blades is particularly harsh. During the cyclic operation of an aeroengine, turbine blades continuously withstand the high-temperature and high-pressure impact of the gas generated after the combustion of fossil fuels. Therefore, the manufacturing technology of turbine blades is also listed as one of the key technologies of modern aeroengines. Currently, with the continuous improvement of material properties and processing and manufacturing technology levels in the field of turbine blade manufacturing, the design requirements for aeroengine turbine blades are becoming increasingly stringent, and the requirements for manufacturing technology are also getting higher and higher. Therefore, improving the processing technology method of turbine blades, improving the machining accuracy of labyrinth teeth on turbine blades, and improving the processing efficiency of turbine blades, and then ensuring the consistency of the processed turbine blades are problems that need to be faced in the processing of aeroengine turbine blades. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: to provide a device and a processing method for one-time forming of labyrinth teeth of a turbine blade, and to perform one-time processing and forming of multiple labyrinth teeth in the turbine blade.

[0004] The technical solution for the present invention to solve the above technical problems is as follows: A device for one-time forming of labyrinth teeth of a turbine blade includes: a roller, a grinding wheel, a turbine blade, two sliders, two first clamping bolts, a second clamping bolt, a base, and a fixing block. The roller is slidably connected to the grinding wheel. The two sliders are respectively connected to the two first clamping bolts. The upper and lower ends of the turbine blade are respectively detachably connected to the sliders and the fixing block. The fixing block is connected to the second clamping bolt. The grinding wheel is arranged above the turbine blade and is slidably connected to the upper end of the turbine blade. The turbine blade, the sliders, the first clamping bolts, the second clamping bolt, and the fixing block are all arranged on the base.

[0005] The beneficial effects of the present invention are: By detachably connecting the turbine blade to the sliders and the fixing block, it is beneficial to clamp and release the turbine blade. When clamping, the grinding wheel is dressed by the roller, and then multiple labyrinth teeth on the turbine blade are processed at one time by the grinding wheel, optimizing the processing technology method of the turbine blade, improving the processing efficiency of the turbine blade, and at the same time ensuring the machining accuracy of the labyrinth teeth.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Further, the base includes: a first platform, two columns, and two second platforms. The columns are columnar structures. The two columns are correspondingly arranged on the left and right sides of the first platform. The two columns are correspondingly connected to the two second platforms. The upper and lower ends of the columns are correspondingly connected to the lower surface of the second platform and the upper surface of the first platform.

[0008] Further, the first platform and the second platform are plate-like structures. The turbine blade and the fixing block are arranged in the middle of the first platform. The upper surface of the first platform is slidably connected to the fixing block. The two sliders, the two first pressing bolts, and the two second platforms are respectively arranged on the left and right sides of the turbine blade. The upper surface of the second platform is slidably connected to the two sliders correspondingly.

[0009] The beneficial effect of adopting the above further solution is that the base is beneficial to providing support for the machining of the labyrinth teeth on the turbine blade. The first platform provides support for clamping the tenon of the turbine blade, and the second platform provides support for clamping the shroud of the turbine blade, thereby realizing the clamping of the entire turbine blade.

[0010] Further, the turbine blade includes: a turbine blade tenon, a turbine blade shroud, and a turbine blade body. The upper and lower ends of the turbine blade body are correspondingly connected to the turbine blade shroud and the turbine blade tenon. The turbine blade tenon is detachably connected to the fixing block, and the turbine blade shroud is detachably connected to the slider.

[0011] The beneficial effect of adopting the above further solution is that the turbine blade tenon cooperates with the fixing block, and the turbine blade shroud cooperates with the slider, which is beneficial to fixing the turbine blade and facilitating the machining of multiple labyrinth teeth on the turbine blade shroud.

[0012] Further, the turbine blade tenon is a columnar structure with corrugated protrusions on the outer side wall. The left and right sides of the turbine blade tenon are correspondingly a first tenon profile and a second tenon profile. The fixing block includes a first fixing block and a second fixing block. The first fixing block and the second fixing block are both block-like structures. The first fixing block and the second fixing block are correspondingly arranged on the left and right sides of the turbine blade tenon. The first tenon profile and the second tenon profile are correspondingly adapted to the right side wall of the first fixing block and the left side wall of the second fixing block.

[0013] The beneficial effect of adopting the above further solution is that the right side wall of the first fixing block and the left side wall of the second fixing block are adapted to the first tenon profile and the second tenon profile, which is beneficial to better fitting and fixing the turbine blade tenon and the fixing block. Moreover, the setting of the first fixing block and the second fixing block, under the action of the second pressing bolt, is beneficial to adjusting the gap between the first fixing block and the second fixing block, facilitating the clamping and loosening of the turbine blade tenon.

[0014] Further, on the left and right sides of the turbine blade crown, there are respectively a crown back engagement surface and a crown basin engagement surface, the slider is a block structure, and the crown back engagement surface and the crown basin engagement surface respectively match the sides of the two sliders close to the crown end of the turbine blade.

[0015] The beneficial effect of adopting the above further solution is that the crown back engagement surface and the crown basin engagement surface matching the sides of the slider close to the crown end of the turbine blade are conducive to better fitting and fixing the turbine blade crown and the slider, and with the cooperation of the first compression bolt, it is conducive to adjusting the gap between the two sliders, facilitating the clamping and loosening of the turbine blade crown.

[0016] Further, a plurality of labyrinth teeth are arranged on the upper surface of the turbine blade crown, and the plurality of labyrinth teeth are strip-shaped convex structures with different heights and inclination angles.

[0017] Further, the grinding wheel is a cylindrical structure with grooves provided on its side wall, and the number and shape of the grooves match the number and shape of the labyrinth teeth.

[0018] Further, the roller is a cylindrical structure with a diameter smaller than that of the grinding wheel, and protrusions are provided on the side wall of the roller, and the number and shape of the protrusions match the number and shape of the grooves.

[0019] The beneficial effect of adopting the above further solution is that the number and shape of the grooves match the number and shape of the labyrinth teeth, and the number and shape of the protrusions match the number and shape of the grooves, which is conducive to dressing the grinding wheel through the roller, and then using the grinding wheel to process a plurality of labyrinth teeth at one time, improving the processing efficiency and processing accuracy of the labyrinth teeth. At the same time, as a standard part, the diameter of the roller is smaller than that of the grinding wheel as a wearing part, which is conducive to cost saving.

[0020] The present invention also provides a method for one-time forming and processing of the labyrinth teeth of a turbine blade, including the following steps:

[0021] S1: According to the number and shape of the labyrinth teeth, grooves matching the number and shape of the labyrinth teeth are provided on the side wall of the grinding wheel, and according to the number and shape of the grooves, protrusions matching the number and shape of the grooves are provided on the side wall of the roller;

[0022] S2: Loosen the first compression bolt to move the two sliders to the left and right ends respectively, and loosen the second compression bolt to move the first fixing block and the second fixing block to the left and right ends respectively;

[0023] S3: Place the turbine blade tenon between the first fixing block and the second fixing block, such that the first tenon profile and the second tenon profile respectively match and are adapted to the right side wall of the first fixing block and the left side wall of the second fixing block. Place the turbine blade shroud between the two sliders, such that the shroud back engagement surface and the shroud basin engagement surface respectively match and are adapted to the sides of the two sliders close to the turbine blade shroud end;

[0024] S4: Tighten the first compression bolt to move the slider towards the turbine blade shroud end and press the slider against the turbine blade shroud. Tighten the second compression bolt to move the first fixing block and the second fixing block towards the turbine blade tenon end and press the first fixing block and the second fixing block against the turbine blade tenon;

[0025] S5: Place the grinding wheel above the turbine blade, such that the groove is adaptively connected to the labyrinth teeth, and the protrusion is adaptively connected to the groove;

[0026] S6: Dress the grinding wheel by rotating the roller, and machine the labyrinth teeth by rotating the grinding wheel.

[0027] The beneficial effects of the processing method are as follows: The grinding wheel is dressed by the roller, and then the top surface of the shroud is machined by the dressed grinding wheel, which is beneficial to ensuring the dimensions of the three labyrinth teeth on the top surface of the shroud, thereby ensuring the consistency of the quality of the turbine blade, avoiding the quality fluctuations of the turbine blade caused by manual clamping, and improving the processing efficiency of the product at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a processing schematic diagram provided by an embodiment of the present invention; Figure 1 ;

[0029] Figure 2 is a processing schematic diagram provided by an embodiment of the present invention; Figure 2 ;

[0030] Figure 3 is a schematic diagram of the structures of the roller and the grinding wheel provided by an embodiment of the present invention;

[0031] Figure 4 is a schematic diagram of the structure of the turbine blade provided by an embodiment of the present invention; Figure 1 ;

[0032] Figure 5 is a schematic diagram of the structure of the turbine blade provided by an embodiment of the present invention; Figure 2 ;

[0033] Figure 6 is a schematic diagram of the structure of the fixing block provided by an embodiment of the present invention.

[0034] Among them, Figure 1The double-headed arrows inside indicate the installation orientations of the components.

[0035] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0036] 1. Roller; 2. Grinding wheel; 3. Turbine blade; 4. Slide block; 5. First compression bolt; 6. Second compression bolt; 7. Base; 8. Fixed block; 11. Protrusion; 21. Groove; 31. Turbine blade tenon; 32. Turbine blade shroud; 33. Turbine blade blade body; 71. First platform; 72. Pillar; 73. Second platform; 81. First fixed block; 82. Second fixed block; 311. First tenon profile; 312. Second tenon profile; 321. Backward meshing surface of the shroud; 322. Basinward meshing surface of the shroud; 323. Labyrinth seal teeth. Detailed implementation manners

[0037] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0038] As Figure 1 shown, a device for one-time forming of labyrinth seal teeth of a turbine blade includes: a roller 1, a grinding wheel 2, a turbine blade 3, two slide blocks 4, two first compression bolts 5, a second compression bolt 6, a base 7 and a fixed block 8. The roller 1 and the grinding wheel 2 are slidably connected. The two slide blocks 4 and the two first compression bolts 5 are connected in a one-to-one correspondence. The upper and lower ends of the turbine blade 3 are detachably connected to the slide block 4 and the fixed block 8 in a one-to-one correspondence. The fixed block 8 and the second compression bolt 6 are connected. The grinding wheel 2 is arranged above the turbine blade 3 and is slidably connected to the upper end of the turbine blade 3. The turbine blade 3, the slide block 4, the first compression bolt 5, the second compression bolt 6 and the fixed block 8 are all arranged on the base 7.

[0039] The beneficial effects of the present invention are as follows: By detachably connecting the turbine blade to the slide block and the fixed block, it is beneficial to clamp and release the turbine blade. When clamping, the grinding wheel is dressed by the roller, and then multiple labyrinth seal teeth on the turbine blade are processed at one time by the grinding wheel, optimizing the processing process method of the turbine blade, improving the processing efficiency of the turbine blade, and at the same time ensuring the processing accuracy of the labyrinth seal teeth.

[0040] Preferably, as Figure 1 and Figure 2 shown, the base 7 includes: a first platform 71, two pillars 72 and two second platforms 73. The pillar 72 is a columnar structure. The two pillars 72 are arranged on the left and right sides of the first platform 71 in a one-to-one correspondence. The two pillars 72 and the two second platforms 73 are connected in a one-to-one correspondence. The upper and lower ends of the pillar 72 are connected to the lower surface of the second platform 73 and the upper surface of the first platform 71 in a one-to-one correspondence.

[0041] Preferably, as Figure 1 and Figure 2 shown, the first platform 71 and the second platform 73 are plate-like structures. The turbine blade 3 and the fixing block 8 are arranged in the middle of the first platform 71. The upper surface of the first platform 71 is slidably connected to the fixing block 8. Two sliders 4, two first pressing bolts 5 and two second platforms 73 are respectively arranged on the left and right sides of the turbine blade 3. The upper surface of the second platform 73 is slidably connected to the two sliders 4 in one-to-one correspondence.

[0042] The beneficial effects of adopting the above preferred solution are as follows: The base is beneficial to providing support for the machining of the labyrinth teeth on the turbine blade. The first platform provides support for clamping the tenon of the turbine blade, and the second platform provides support for clamping the shroud of the turbine blade, thereby realizing the clamping of the entire turbine blade.

[0043] Preferably, as Figure 4 and Figure 5 shown, the turbine blade 3 includes a turbine blade tenon 31, a turbine blade shroud 32 and a turbine blade body 33. The upper and lower ends of the turbine blade body 33 are connected to the turbine blade shroud 32 and the turbine blade tenon 31 in one-to-one correspondence. The turbine blade tenon 31 is detachably connected to the fixing block 8, and the turbine blade shroud 32 is detachably connected to the slider 4.

[0044] The beneficial effects of adopting the above preferred solution are as follows: The cooperation between the turbine blade tenon and the fixing block, and the cooperation between the turbine blade shroud and the slider are beneficial to fixing the turbine blade, which is convenient for machining the multiple labyrinth teeth on the turbine blade shroud.

[0045] Preferably, as Figure 4 , Figure 5 and Figure 6 shown, the turbine blade tenon 31 is a columnar structure with corrugated protrusions on the outer side wall. The left and right sides of the turbine blade tenon 31 are the first tenon profile 311 and the second tenon profile 312 in one-to-one correspondence. The fixing block 8 includes a first fixing block 81 and a second fixing block 82. Both the first fixing block 81 and the second fixing block 82 are block-like structures. The first fixing block 81 and the second fixing block 82 are arranged on the left and right sides of the turbine blade tenon 31 in one-to-one correspondence. The first tenon profile 311 and the second tenon profile 312 are in one-to-one correspondence with the right side wall of the first fixing block 81 and the left side wall of the second fixing block 82 and are adapted to each other.

[0046] The beneficial effects of adopting the above preferred solution are as follows: The right side wall of the first fixing block and the left side wall of the second fixing block are adapted to the first tenon profile and the second tenon profile, which is beneficial to better fitting and fixing the tenon of the turbine blade and the fixing block. Moreover, the arrangement of the first fixing block and the second fixing block, together with the action of the second pressing bolt, is beneficial to adjusting the gap between the first fixing block and the second fixing block, facilitating the clamping and loosening of the tenon of the turbine blade.

[0047] Preferably, as Figure 4 and Figure 5 shown, on the left and right sides of the crown 32 of the turbine blade, there are respectively a crown back meshing surface 321 and a crown face meshing surface 322 corresponding to each other. The slider 4 is of a block structure, and the crown back meshing surface 321 and the crown face meshing surface 322 respectively correspond to and are adapted to the sides of the two sliders 4 close to the crown 32 of the turbine blade.

[0048] The beneficial effects of adopting the above preferred solution are as follows: The crown back meshing surface and the crown face meshing surface being adapted to the sides of the slider close to the crown end of the turbine blade is beneficial to better fitting and fixing the crown of the turbine blade and the slider. Moreover, with the cooperation of the first pressing bolt, it is beneficial to adjusting the gap between the two sliders, facilitating the clamping and loosening of the crown of the turbine blade.

[0049] Preferably, as Figure 5 shown, on the upper surface of the crown 32 of the turbine blade, there are provided a plurality of labyrinth teeth 323, and the plurality of labyrinth teeth 323 are in the form of long strip protrusions with different heights and inclination angles.

[0050] Preferably, as Figure 3 shown, the grinding wheel 2 is of a cylindrical structure with grooves 21 provided on its side wall, and the number and shape of the grooves 21 are adapted to the number and shape of the labyrinth teeth 323.

[0051] Preferably, as Figure 3 shown, the roller 1 is of a cylindrical structure with a diameter smaller than that of the grinding wheel 2. On the side wall of the roller 1, there are provided protrusions 11, and the number and shape of the protrusions 11 are adapted to the number and shape of the grooves 21.

[0052] The beneficial effects of adopting the above preferred solution are as follows: The number and shape of the grooves are adapted to the number and shape of the labyrinth teeth, and the number and shape of the protrusions are adapted to the number and shape of the grooves, which is beneficial to dressing the grinding wheel through the roller, and then using the grinding wheel to process a plurality of labyrinth teeth at one time, improving the processing efficiency and processing accuracy of the labyrinth teeth. At the same time, as a standard part, the diameter of the roller is smaller than that of the grinding wheel as a wearing part, which is beneficial to cost savings.

[0053] The present invention also provides a method for one - time forming and processing of the labyrinth teeth of a turbine blade, including the following steps:

[0054] S1: According to the number and shape of the labyrinth teeth 323, grooves 21 adapted to the number and shape of the labyrinth teeth 323 are provided on the side wall of the grinding wheel 2. According to the number and shape of the grooves 21, protrusions 11 adapted to the number and shape of the grooves 21 are provided on the side wall of the roller 1;

[0055] S2: Loosen the first compression bolt 5 to move the two sliders 4 to the left and right ends correspondingly. Loosen the second compression bolt 6 to move the first fixing block 81 and the second fixing block 82 to the left and right ends correspondingly;

[0056] S3: Place the turbine blade tenon 31 between the first fixing block 81 and the second fixing block 82, so that the first tenon profile 311 and the second tenon profile 312 are correspondingly adapted to the right side wall of the first fixing block 81 and the left side wall of the second fixing block 82. Place the turbine blade crown 32 between the two sliders 4, so that the crown back engaging surface 321 and the crown basin engaging surface 322 are correspondingly adapted to the sides of the two sliders 4 close to the turbine blade crown 32;

[0057] S4: Tighten the first compression bolt 5 to move the slider 4 towards the end close to the turbine blade crown 32 and press the slider 4 against the turbine blade crown 32. Tighten the second compression bolt 6 to move the first fixing block 81 and the second fixing block 82 towards the end close to the turbine blade tenon 31 and press the first fixing block 81 and the second fixing block 82 against the turbine blade tenon 31;

[0058] S5: Place the grinding wheel 2 above the turbine blade 3, so that the grooves 21 are adaptively connected to the labyrinth teeth 323, and the protrusions 11 are adaptively connected to the grooves 21;

[0059] S6: Dress the grinding wheel 2 by rotating the roller 1, and machine the labyrinth teeth 323 by rotating the grinding wheel 2.

[0060] The beneficial effects of the processing method are as follows: It is beneficial to dress the grinding wheel through the roller, and then use the grinding wheel to machine multiple labyrinth teeth at one time, optimizing the processing technology method of the turbine blade, improving the processing efficiency of the turbine blade, and at the same time ensuring the machining accuracy of the labyrinth teeth on the turbine blade.

[0061] It should be noted that: in this embodiment, in the initial state, the shroud 32 of the turbine blade may not have a plurality of labyrinth teeth 323. That is, in S1, it is necessary to first design the number and shape of the required labyrinth teeth 323 on the drawing, and then set the number and shape of the grooves 21 on the grinding wheel 2 and the protrusions 11 on the roller 1 according to the number and shape of the required labyrinth teeth 323. Finally, by machining the shroud 32 of the turbine blade, the required number and shape of labyrinth teeth 323 appear at the top of the shroud 32 of the turbine blade; or there may be a plurality of blank labyrinth teeth 323 at the top of the shroud 32 of the turbine blade. By machining the blank labyrinth teeth 323 at the top of the shroud 32 of the turbine blade, the required number and shape of labyrinth teeth 323 appear at the top of the shroud 32 of the turbine blade.

[0062] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0063] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Further, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0066] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without conflict, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0067] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A primary forming device for a turbine blade labyrinth seal, characterized in that, Comprising: A roller (1), a grinding wheel (2), a turbine blade (3), two sliders (4), two first pressing bolts (5), a second pressing bolt (6), a base (7) and a fixing block (8). The roller (1) is slidably connected to the grinding wheel (2). The two sliders (4) and the two first pressing bolts (5) are connected in one-to-one correspondence. The upper and lower ends of the turbine blade (3) are detachably connected to the slider (4) and the fixing block (8) in one-to-one correspondence. The fixing block (8) is connected to the second pressing bolt (6). The grinding wheel (2) is arranged above the turbine blade (3) and is slidably connected to the upper end of the turbine blade (3). The turbine blade (3), the slider (4), the first pressing bolt (5), the second pressing bolt (6) and the fixing block (8) are all arranged on the base (7); The turbine blade (3) includes: a turbine blade tenon (31), a turbine blade shroud (32) and a turbine blade body (33). The upper and lower ends of the turbine blade body (33) are connected to the turbine blade shroud (32) and the turbine blade tenon (31) in one-to-one correspondence. The turbine blade tenon (31) is detachably connected to the fixing block (8). The turbine blade shroud (32) is detachably connected to the slider (4); The turbine blade tenon (31) is a columnar structure with corrugated protrusions on the outer sidewall. The left and right sides of the turbine blade tenon (31) are the first tenon profile (311) and the second tenon profile (312) in one-to-one correspondence. The fixing block (8) includes a first fixing block (81) and a second fixing block (82). The first fixing block (81) and the second fixing block (82) are both block structures. The first fixing block (81) and the second fixing block (82) are arranged on the left and right sides of the turbine blade tenon (31) in one-to-one correspondence. The first tenon profile (311) and the second tenon profile (312) are adapted to the right sidewall of the first fixing block (81) and the left sidewall of the second fixing block (82) in one-to-one correspondence; The left and right sides of the turbine blade shroud (32) are the shroud back engagement surface (321) and the shroud bowl engagement surface (322) in one-to-one correspondence. The slider (4) is a block structure. The shroud back engagement surface (321) and the shroud bowl engagement surface (322) are adapted to the sides of the two sliders (4) close to the turbine blade shroud (32) in one-to-one correspondence; The upper surface of the turbine blade shroud (32) is provided with a plurality of labyrinth teeth (323). The plurality of labyrinth teeth (323) are a plurality of long strip protrusion structures with different heights and inclination angles; The grinding wheel (2) is a cylindrical structure with a groove (21) provided on the sidewall. The number and shape of the groove (21) are adapted to the number and shape of the labyrinth teeth (323); The roller (1) is a cylindrical structure with a diameter smaller than that of the grinding wheel (2). A protrusion (11) is provided on the sidewall of the roller (1). The number and shape of the protrusion (11) are adapted to the number and shape of the groove (21).

2. The one-time forming device for the labyrinth of a turbine blade according to claim 1, characterized in that The base (7) includes: a first platform (71), two struts (72), and two second platforms (73). The struts (72) are columnar structures. The two struts (72) are respectively arranged on the left and right sides of the first platform (71). The two struts (72) and the two second platforms (73) are connected in a one-to-one correspondence. The upper and lower ends of the struts (72) are respectively connected to the lower surface of the second platform (73) and the upper surface of the first platform (71).

3. The one-time forming device for the labyrinth of a turbine blade according to claim 2, characterized in that, The first platform (71) and the second platform (73) are plate-like structures. The turbine blade (3) and the fixing block (8) are arranged in the middle of the first platform (71). The upper surface of the first platform (71) is slidably connected to the fixing block (8). The two sliders (4), the two first pressing bolts (5), and the two second platforms (73) are respectively arranged on the left and right sides of the turbine blade (3). The upper surface of the second platform (73) is slidably connected to the two sliders (4) in a one-to-one correspondence.

4. A method for one-time forming and machining of the labyrinth of a turbine blade, characterized in that, Using the turbine blade labyrinth one-time forming device according to any one of the above claims 1-3, the following steps are included: S1: According to the number and shape of the labyrinth teeth (323), grooves (21) adapted to the number and shape of the labyrinth teeth (323) are arranged on the side wall of the grinding wheel (2). According to the number and shape of the grooves (21), protrusions (11) adapted to the number and shape of the grooves (21) are arranged on the side wall of the roller (1). S2: Loosen the first pressing bolt (5) to move the two sliders (4) to the left and right ends respectively. Loosen the second pressing bolt (6) to move the first fixing block (81) and the second fixing block (82) to the left and right ends respectively. S3: Place the turbine blade tenon (31) between the first fixing block (81) and the second fixing block (82), so that the first tenon profile (311) and the second tenon profile (312) respectively match the right side wall of the first fixing block (81) and the left side wall of the second fixing block (82). Place the turbine blade crown (32) between the two sliders (4), so that the crown back engagement surface (321) and the crown cavity engagement surface (322) respectively match the sides of the two sliders (4) close to the turbine blade crown (32). S4: Tighten the first pressing bolt (5) to move the slider (4) towards the end close to the turbine blade crown (32) and press the slider (4) against the turbine blade crown (32). Tighten the second pressing bolt (6) to move the first fixing block (81) and the second fixing block (82) towards the end close to the turbine blade tenon (31) and press the first fixing block (81) and the second fixing block (82) against the turbine blade tenon (31). S5: Place the grinding wheel (2) above the turbine blade (3) to make the groove (21) fit and connect with the labyrinth teeth (323), and make the protrusion (11) fit and connect with the groove (21). S6: Dress the grinding wheel (2) by rotating the roller (1), and machine the labyrinth teeth (323) by rotating the grinding wheel (2).

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