Blade end milling method

Abstract

The present invention relates to a blade end milling processing method, including S1, preparing tooling: S2, step S1, putting the tooling on a boring machine, leveling the bottom plate, so that the parallelism between the bottom plate and the horizontal plane is within 0.03mm, and aligning the four sides of the bottom plate as a reference, and clamping the bottom plate after alignment; S3, placing the blade stalk on a support plate, using a feeler gauge to level the blade stalk and then pressing the blade stalk; S4, rotating the support plate until the end face of the blade stalk is in a vertical state, then inserting the adjustment pin into the adjustment hole and the corresponding positioning hole, and locking the connecting piece with the adjustment nut; S5, connecting the end face of the blade stalk with a cutter, milling the two end faces of the blade stalk, and the parallelism of the two end faces of the blade stalk is within 0.02mm. The tooling of the present invention is provided with a plurality of positioning holes, and when the adjustment pin cooperates with different positioning holes, the support plate is at different inclination angles, and the blade stalk end faces of different angles can be adjusted to a vertical state, so it can be used for positioning blade stalks with various end face angles, saving the number of tooling and reducing the tooling cost.

Description

Technical Field

[0001] The invention belongs to the technical field of blade cascade production, in particular to a blade cascade end face milling processing method. Background Art

[0002] The top view of an aircraft cascade is shown below: Figure 1 As shown, the arc-shaped inner support bar 100, the arc-shaped outer support bar 200 and a plurality of grid sheets 300 arranged between the inner support bar 100 and the outer support bar 200. The two end surfaces of the inner support bar 100 and the outer support bar 200 are inclined surfaces, such as Figure 2 and Figure 3 As shown, the angles between the two end faces and the upper surfaces of the inner and outer support bars are the same. The two end faces of the blade grid are generally processed by milling. Specifically, a machining center can be used, but the equipment cost and processing cost of the machining center are high. Conventional machine tools (such as milling machines and boring machines) can also be used for milling. When conventional machine tools are used, the blade grid must be clamped with special tooling so that the end face of the blade grid is in a vertical state. Since a complete set of blade grids includes 8 independent blade grids, and the inclination angles of the two end faces of each blade grid are different, each blade grid requires a set of tooling for clamping, and the tooling cost is high. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a blade cascade end face milling processing method, which can be processed by a common boring machine to reduce the processing cost.

[0004] To solve the above problems, the present invention adopts the following technical solution: a blade end face milling method, comprising:

[0005] S1. Preparation of tooling:

[0006] The tooling includes a base plate and a support plate;

[0007] The front end of the bottom plate is provided with a first support seat and a second support seat, and the first support seat and the second support seat are provided with horizontal support holes, and the support hole of the first support seat is coaxial with the support hole of the second support seat; a vertical lower adjustment plate is provided on one side of the rear end of the bottom plate, and a plurality of positioning holes are provided on the lower adjustment plate, and a support column is hinged on the other side of the rear end of the bottom plate, and an adjustment nut is provided on the support column to cooperate with the support column thread;

[0008] A pair of connecting plates are provided at the front end of the support plate, and connecting pins are provided on the connecting plates, and the connecting pins are rotatably matched with the supporting holes; a vertical upper adjustment plate is provided on one side of the rear end of the support plate, and an adjustment hole is provided on the upper adjustment plate, and a detachable adjustment pin is provided in the adjustment hole, and the adjustment pin is inserted into a positioning hole; a connecting piece is provided on the other side of the rear end of the support plate, one end of the connecting piece is rotatably matched with the support plate, and the other end of the connecting piece is sleeved on the outside of the support column, and the connecting piece is locked by an adjusting nut;

[0009] S2, the tooling obtained in step S1 is placed on the boring machine, the bottom plate is leveled so that the parallelism between the bottom plate and the horizontal plane is within 0.03 mm, and the four sides of the bottom plate are used as references for alignment, and the bottom plate is clamped after alignment;

[0010] S3. The blade cascade is placed on the support plate, with the front end of the blade cascade located at the front end of the support plate. The blade cascade is leveled with a feeler gauge and then pressed tightly.

[0011] S4. Rotate the support plate until the end surface of the cascade is in a vertical state, then insert the adjustment pin into the adjustment hole and the corresponding positioning hole, and lock the connecting piece with the adjustment nut;

[0012] S5. The end faces of the blades are connected with cutters, and the two end faces of the blades are milled. The parallelism of the two end faces of the blades is within 0.02mm.

[0013] Furthermore, there are N adjustment holes, N≥3, and the adjustment holes are evenly distributed along the radial direction of the supporting hole; there are N groups of positioning holes, each group of positioning holes corresponds to an adjustment hole, each group of positioning holes is evenly distributed in an arc shape with the supporting hole as the center, and the radial distance from each group of positioning holes to the supporting hole is equal to the radial distance from the corresponding adjustment hole to the supporting hole.

[0014] Furthermore, a rectangular positioning plate is provided on the upper surface of the support plate, and a rotating shaft is provided on the lower surface of the front end of the positioning plate, and the rotating shaft is rotatably matched with the support plate; a guide block is fixedly provided on the lower surface of the rear end of the positioning plate, and an arc-shaped guide groove is provided on the upper surface of the rear end of the support plate, and the center of the circle corresponding to the guide groove coincides with the center of the rotating shaft, and the guide block is located in the guide groove and slidably matched with the guide groove; a first limit block and a second limit block are fixedly provided on the rear end of the support plate, and the first limit block and the second limit block are respectively located on both sides of the positioning plate, the side wall of the first limit block facing the second limit block is the first limit side surface, and the side of the second limit block facing the first limit block is the second limit side surface, and the angle between the first limit side surface and the second limit side surface is 45°; a telescopic locking mechanism is hinged on one side or both sides of the positioning plate;

[0015] In step S3, the positioning plate is pushed to rotate by using the telescopic locking mechanism so that one side of the positioning plate is close to the first limiting side; the blade cascade is placed on the positioning plate, with both ends of the blade cascade extending outside the positioning plate, the clamp is installed on the positioning plate, the blade cascade is leveled by using a feeler gauge, and the radial direction of the front end of the blade cascade is ensured to be parallel to the front end surface of the positioning plate, and the blade cascade is pressed by using the clamp;

[0016] In step S5, the front end face of the blade cascade is first processed. After the processing is completed, the telescopic locking mechanism is used to push the positioning plate to rotate 45° so that the other side of the positioning plate is close to the second limiting side face, and then the milling cutter is moved to the rear end face of the blade cascade to process the rear end face of the blade cascade.

[0017] Furthermore, the telescopic locking mechanism is a hydraulic cylinder, the piston rod of the hydraulic cylinder is hinged to the positioning plate, and the cylinder body of the hydraulic cylinder is hinged to the support plate.

[0018] Furthermore, the support plate is provided with a plurality of rows of mounting through holes, and in step S3, the clamps for pressing the cascade are installed in the mounting through holes.

[0019] Furthermore, there are multiple clamps for pressing the cascade, each of which includes a lower plate and a pressing plate, the lower plate is fixedly provided with a column and a stud perpendicular to the lower plate, one end of the pressing plate is sleeved on the column and matches with the gap of the column, the middle part of the pressing plate is sleeved on the stud and matches with the gap of the stud, and a locking nut is provided on the stud above the pressing plate;

[0020] When pressing the blade grid, move the lower plate to the bottom of the support plate, align the column and the stud with a mounting through hole respectively, and then move the lower plate upward so that the column and the stud pass through the mounting through hole, and then put the pressure plate on the column and the stud, and then install the locking nut on the stud, and rotate the locking nut to move the locking nut downward, pushing the pressure plate to press the blade grid.

[0021] Furthermore, a lifting mechanism is provided between the bottom plate and the support plate.

[0022] Furthermore, the lifting mechanism is a hydraulic cylinder, a piston rod of the hydraulic cylinder is hinged to the support plate, and a cylinder body of the hydraulic cylinder is hinged to the bottom plate.

[0023] The beneficial effects of the present invention are as follows: the present invention adopts a special tool to position the blade grid, so that the two end faces of the blade grid can be in a vertical state. An ordinary boring machine can perform milling processing on the two end faces of the blade grid, and the processing cost is low. In addition, the tool of the present invention is provided with a plurality of positioning holes. When the adjustment pin cooperates with different positioning holes, the support plate is at different inclination angles, and the end faces of the blade grid at different angles can be adjusted to a vertical state. Therefore, the tool can be used for positioning blade grids with various end face angles, saving the number of tooling and reducing the tooling cost. In addition, since each positioning hole of the tool corresponds to a specific inclination angle of the support plate, when adjusting the angle of the support plate, the positioning hole can be used as a reference to ensure that the adjustment is aligned with the corresponding positioning hole and the adjustment pin is inserted. The angle adjustment is convenient and quick, and the end face of the blade grid can be quickly adjusted to a vertical state. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a top view schematic diagram of the cascade;

[0025] Figure 2 yes Figure 1 Schematic diagram of the middle A direction;

[0026] Figure 3 yes Figure 1 Schematic diagram of the middle B direction;

[0027] Figure 4 It is a top view schematic diagram of an embodiment of the tooling of the present invention;

[0028] Figure 5 yes Figure 4 Schematic diagram of the middle C direction;

[0029] Figure 6 yes Figure 4 Schematic diagram of the middle D direction;

[0030] Figure 7 yes Figure 4 EE cross-sectional view diagram;

[0031] Figure 8 Is adopted Figure 4 A top view schematic diagram of the blade cascade after being compressed during the tooling shown;

[0032] Fig. 9 is a side view schematic diagram after the end surface of the cascade is adjusted to a vertical state;

[0033] Fig.10 yes Figure 8 A schematic cross-sectional view of the FF;

[0034] Fig.11 It is a top view schematic diagram of another embodiment of the tooling of the present invention;

[0035] Fig.12 yes Fig.11 Schematic cross-sectional view of middle GG;

[0036] Fig.13 Is adopted Fig.11 A top view schematic diagram of the front end surface processing of the blade cascade when the tooling is shown;

[0037] Fig.14 Is adopted Fig.11 A top view schematic diagram of machining the rear end face of the cascade when the tooling is shown;

[0038] Fig.15 It is a schematic diagram of the positioning hole and the adjustment hole of the present invention;

[0039] Figure markings: 1—base plate; 2—support plate; 3—first support seat; 4—second support seat; 5—lower adjustment plate; 6—positioning hole; 7—support column; 8—adjusting nut; 9—connecting plate; 10—connecting pin; 11—upper adjustment plate; 12—adjusting hole; 13—adjusting pin; 14—connecting plate; 15—positioning plate; 16—rotating shaft; 17—guide block; 18—guide groove; 19—first limit block; 20—second limit block; 21—telescopic locking mechanism; 22—installation through hole; 23—lifting mechanism; 24—lower plate; 25—pressing plate; 26—upright column; 27—stud; 28—locking nut; 100—inner support bar; 200—outer support bar; 300—grating. DETAILED DESCRIPTION

[0040] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0041] The blade end face milling processing method of the present invention comprises:

[0042] S1. Preparation of tooling:

[0043] like Figures 4 to 7 As shown, the tooling includes a bottom plate 1 and a support plate 2. The bottom plate 1 and the support plate 2 are both made of rectangular metal plates of a certain thickness. The lower surface and four side surfaces of the bottom plate 1 have high processing accuracy.

[0044] A first support seat 3 and a second support seat 4 are fixedly provided at the front end of the base plate 1, and horizontal support holes are provided on the first support seat 3 and the second support seat 4, and the support hole of the first support seat 3 is coaxial with the support hole of the second support seat 4; a vertical lower adjustment plate 5 is provided on one side of the rear end of the base plate 1, and a plurality of positioning holes 6 are provided on the lower adjustment plate 5, and a support column 7 is hinged on the other side of the rear end of the base plate 1, and the lower end of the support column 7 is hinged to the base plate 1 through a support pin, and an adjusting nut 8 is provided on the support column 7 which is threadedly matched with the support column 7, and there are two adjusting nuts 8.

[0045] A pair of connecting plates 9 are provided at the front end of the support plate 2, and a connecting pin 10 is provided on the connecting plate 9. The connecting pin 10 is rotatably matched with the support hole so that the connecting pin 10 can rotate around its own center line. A vertical upper adjustment plate 11 is provided on one side of the rear end of the support plate 2, and an adjustment hole 12 is provided on the upper adjustment plate 11. A detachable adjustment pin 13 is provided in the adjustment hole 12, and the adjustment pin 13 is inserted into a positioning hole 6. A connecting piece 14 is provided on the other side of the rear end of the support plate 2, and one end of the connecting piece 14 is rotatably matched with the support plate 2 through a pin shaft, and the other end of the connecting piece 14 is sleeved on the outside of the support column 7, and the connecting piece 14 is locked by an adjusting nut 8. Adjusting nuts 8 are provided above and below the connecting piece 14 to stably position the connecting piece 14.

[0046] In the tooling of the present invention, the support plate 2 can rotate, and the rotation center is the center line of the connecting pin 10. Before the support plate 2 rotates, the adjusting nut 8 is first contacted to position the connecting piece 14, and the adjusting pin 13 is pulled out. When the support plate 2 rotates, the connecting plate 9, the upper adjusting plate 11 and the connecting piece 14 are driven to rotate synchronously. When the upper adjusting plate 11 rotates, the adjusting hole 12 can be driven to align with different positioning holes 6, so that the adjusting pin 13 cooperates with different positioning holes 6. Every positioning hole 6 corresponds to a specific angle of the support plate 2, that is, when the adjusting pin 13 cooperates with different positioning holes 6, the support plate 2 is at different angles. After the adjusting pin 13 is inserted into the positioning hole 6, the upper adjusting plate 11 and the support plate 2 can no longer rotate, so that the angle and position of the support plate 2 remain fixed. In order to improve the stability of the support plate 2, after the angle of the support plate 2 is fixed, the connecting piece 14 is locked by using the adjusting nut 8, so that the adjusting pin 13 supports one side of the support plate 2, and the support column 7 and the adjusting nut 8 support the other side of the support plate 2, so as to ensure the stability of the support plate 2.

[0047] S2, the tooling prepared in step S1 is placed on the boring machine, the base plate 1 is leveled so that the parallelism between the base plate 1 and the horizontal plane is within 0.03 mm, and the four sides of the base plate 1 are used as references for alignment, and the base plate 1 is clamped after alignment. The position accuracy of the tooling ensures the machining accuracy of the workpiece, so it is necessary to ensure the clamping accuracy of the base plate 1. The base plate 1 can be clamped using the existing clamping mechanism on the boring machine.

[0048] S3. The blade cascade is placed on the support plate 2. The front end of the blade cascade is located at the front end of the support plate 2. Any end of the blade cascade can be used as the front end. Use a feeler gauge to level the blade cascade and then press the blade cascade tightly. Figure 8 The blade cascade has a fan-shaped shape. After the blade cascade is clamped, ensure that the radial direction of the front end of the blade cascade is parallel to the front side of the support plate 2.

[0049] In order to facilitate the compression of the blade grid, a plurality of rows of mounting through holes 22 are provided on the support plate 2 , and the clamps for compressing the blade grid are installed in the mounting through holes 22 .

[0050] Specifically, there are multiple clamps for pressing the blade grid, each of which is as follows: Fig.10 As shown, it includes a lower plate 24 and a pressure plate 25. The lower plate 24 is fixed with a column 26 and a stud 27 perpendicular to the lower plate 24. One end of the pressure plate 25 is sleeved on the column 26 and has a clearance fit with the column 26. The middle part of the pressure plate 25 is sleeved on the stud 27 and has a clearance fit with the stud 27. A locking nut 28 is provided on the stud 27 above the pressure plate 25.

[0051] When the blade grid is compressed, the lower plate 24 is moved to the bottom of the support plate 2, and the column 26 and the stud 27 are respectively aligned with a mounting through hole 22, and then the lower plate 24 is moved upward so that the column 26 and the stud 27 pass through the mounting through hole 22, and then the pressing plate 25 is sleeved on the column 26 and the stud 27, and then the locking nut 28 is installed on the stud 27, and the locking nut 28 is rotated to move the locking nut 28 downward, pushing the pressing plate 25 to compress the blade grid.

[0052] The front and rear sides of the blade grid can be respectively clamped and fixed by a clamp to ensure the stability of the blade grid.

[0053] S4, rotate the support plate 2 until the end surface of the cascade is in a vertical state, then insert the adjustment pin 13 into the adjustment hole 12 and the corresponding positioning hole 6, and use the adjustment nut 8 to lock the connecting piece 14, as shown in FIG. Fig. 9 shown.

[0054] The positioning holes 6 play a role in controlling the angle of the support plate 2. Since each positioning hole 6 corresponds to an angle of the support plate 2, when adjusting the angle of the support plate 2, it is only necessary to find the corresponding positioning hole 6 according to the target angle of the support plate 2, and then rotate the support plate 2 so that the adjustment hole 12 is aligned with the corresponding positioning hole 6, and finally insert the adjustment pin 13. The angle adjustment of the support plate 2 is very convenient and quick.

[0055] S5. The end faces of the blades are connected with cutters, and the two end faces of the blades are milled. The parallelism of the two end faces of the blades is within 0.02mm.

[0056] Since a complete set of blade cascades includes 8 individual blade cascades, each individual blade cascade has a fan-shaped shape, and the corresponding center angle of each individual blade cascade at both ends is 45°. In the present invention, the parallelism of the two end faces of the blade cascade refers to: after the rear end face of the blade cascade is rotated 45° along the circumference of the inner support bar 100 and the outer support bar 200, the parallelism between the rear end face and the front end face, and the rotation center of the rear end face is the center of the circle corresponding to the inner support bar 100 and the outer support bar 200.

[0057] In order to ensure that the support plate 2 can be at more angles, such as Fig.15As shown, there are N adjustment holes 12, N ≥ 3, and the adjustment holes 12 are uniformly distributed along the radial direction of the support hole; there are N groups of positioning holes 6, each group of positioning holes 6 corresponds to one adjustment hole 12, each group of positioning holes 6 is uniformly distributed in an arc shape with the support hole as the center, and the radial distance from each group of positioning holes 6 to the support hole is equal to the radial distance from the corresponding adjustment hole 12 to the support hole. The number of positioning holes 6 in each group can be 1 or more. After adopting the setting method of the adjustment holes 12 and the positioning holes 6 of the present invention, more positioning holes 6 can be set in a smaller range. While increasing the angle adjustment range of the support plate 2, the area of ​​the lower adjustment plate 5 and the upper adjustment plate 11 can be reduced, which is beneficial to reducing the volume of the entire tooling.

[0058] Since the weight of the support plate 2 and the blades and other components is relatively large, it is laborious to manually rotate the support plate 2, so a lifting mechanism 23 is provided between the bottom plate 1 and the support plate 2. The lifting mechanism 23 is a hydraulic cylinder, the piston rod of the hydraulic cylinder is hinged to the support plate 2, and the cylinder body of the hydraulic cylinder is hinged to the bottom plate 1. The hydraulic cylinder can push the support plate 2 to rotate, replacing manual operation, which is more efficient and more labor-saving.

[0059] In step S5, when the front end face is milled, the cutting direction of the milling cutter is parallel to the front side surface of the support plate 2. After the front end face is processed, if the rear end face is directly processed, the cutting direction of the milling cutter is at an angle of 45 degrees to the front side surface of the support plate 2. The cutting direction of the milling cutter needs to be adjusted, and the processing difficulty increases. The blade grid can also be turned around and then the rear end face is processed, but the clamp needs to be removed first and then clamped again, which is a lot of work and affects efficiency.

[0060] In order to realize the processing of the two end faces of the blade in one clamping, such as Fig.11 and Fig.12 As shown, the present invention Figures 4 to 7On the basis of the tooling shown, a rectangular positioning plate 15 is added to the upper surface of the support plate 2, and a rotating shaft 16 is fixedly provided on the lower surface of the front end of the positioning plate 15. The rotating shaft 16 is perpendicular to the positioning plate 15, and the rotating shaft 16 is rotatably matched with the support plate 2, so that the positioning plate 15 can rotate relative to the center line of the rotating shaft 16. A guide block 17 is fixedly provided on the lower surface of the rear end of the positioning plate 15, and an arc-shaped guide groove 18 is provided on the upper surface of the rear end of the support plate 2. The center of the circle corresponding to the guide groove 18 coincides with the center of the rotating shaft 16, and the guide block 17 is located in the guide groove 18 and slidably matches with the guide groove 18. The guide groove 18 can be a dovetail groove, and the lower end of the guide block 17 can be a dovetail shape. The guide block 17 and the guide groove 18 play a guiding role, which can ensure the stability of the positioning plate 15 when it rotates. The rear end of the support plate 2 is fixedly provided with a first limit block 19 and a second limit block 20, which are respectively located on both sides of the positioning plate 15, the side wall of the first limit block 19 facing the second limit block 20 is the first limit side surface, the side of the second limit block 20 facing the first limit block 19 is the second limit side surface, and the angle between the first limit side surface and the second limit side surface is 45°. When the positioning plate 15 rotates toward the first limit block 19, the side wall of the positioning plate 15 can fit the first limit side surface, and when the positioning plate 15 rotates toward the second limit block 20, the side wall of the positioning plate 15 can fit the second limit side surface. When the side wall of the positioning plate 15 is in contact with the first limiting side surface, the front end side surface of the positioning plate 15 is parallel to the front end side surface of the support plate 2, and the positioning plate 15 is in the processing position of the front end surface of the cascade; when the side wall of the positioning plate 15 is in contact with the second limiting side surface, the angle between the front end side surface of the positioning plate 15 and the front end side surface of the support plate 2 is 45°, and the positioning plate 15 is in the processing position of the rear end surface of the cascade. A telescopic locking mechanism 21 is hinged on one or both sides of the positioning plate 15, and the telescopic locking mechanism 21 is used to drive the positioning plate 15 to rotate and provide pressure to the positioning plate 15, so as to press and fix the positioning plate 15 on the side wall of the first limiting block 19 facing the second limiting block 20, so as to ensure that the position of the positioning plate 15 remains stable.

[0061] In step S3, the telescopic locking mechanism 21 is used to push the positioning plate 15 to rotate so that one side of the positioning plate 15 is close to the first limiting side; the blade grid is placed on the positioning plate 15, and the two ends of the blade grid extend outside the positioning plate 15, that is, the two ends of the blade grid are suspended in the air, so that the milling cutter can mill the entire end surface. The fixture is installed on the positioning plate 15, and the blade grid is leveled with a feeler gauge to ensure that the radial direction of the front end of the blade grid is parallel to the front end surface of the positioning plate 15. At this time, the front end surface of the positioning plate 15 is parallel to the front side surface of the support plate 2, and then the blade grid is pressed by the fixture, as shown in FIG. Fig.13 As shown. The fixture can be any existing fixture, or Fig.10 The lower plate 24 in the clamp is removed, and the columns 26 and studs 27 are fixed to the upper surface of the positioning plate 15, while the remaining components and clamping method remain unchanged.

[0062] In step S5, the front end face of the blade cascade is first processed. During the processing, the cutting direction of the milling cutter is parallel to the front side face of the support plate 2. After the processing is completed, the telescopic locking mechanism 21 is used to push the positioning plate 15 to rotate 45 degrees, so that the other side face of the positioning plate 15 is close to the second limiting side face. Fig.14 As shown, the milling cutter is moved to the rear end face of the blade cascade to process the rear end face of the blade cascade. When the positioning plate 15 rotates, it drives 45°, so that the rear end face of the positioning plate 15 is parallel to the front side face of the support plate 2, and the cutting direction of the milling cutter is parallel to the front side face of the support plate 2. It can be seen that when processing the front and rear end faces of the blade cascade, the cutting direction of the milling cutter is unchanged. After the front end face of the blade cascade is processed, it is only necessary to translate the milling cutter to the rear end face of the blade cascade to continue processing. The entire processing process only requires the blade cascade to be pressed once, which is conducive to improving processing efficiency.

[0063] In the present invention, the telescopic locking mechanism 21 is a hydraulic cylinder, the piston rod of the hydraulic cylinder is hinged to the positioning plate 15 , and the cylinder body of the hydraulic cylinder is hinged to the support plate 2 .

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A blade end face milling method, characterized in that: include S1. Preparation of tooling: The tooling comprises a base plate (1) and a support plate (2); A first support seat (3) and a second support seat (4) are provided at the front end of the base plate (1), and horizontal support holes are provided on the first support seat (3) and the second support seat (4), and the support hole of the first support seat (3) is coaxial with the support hole of the second support seat (4); a vertical lower adjustment plate (5) is provided on one side of the rear end of the base plate (1), and a plurality of positioning holes (6) are provided on the lower adjustment plate (5); a support column (7) is hingedly connected to the other side of the rear end of the base plate (1), and an adjustment nut (8) is provided on the support column (7) and is threadedly matched with the support column (7); A pair of connecting plates (9) are provided at the front end of the support plate (2), and a connecting pin (10) is provided on the connecting plate (9), and the connecting pin (10) is rotatably engaged with the support hole; a vertical upper adjustment plate (11) is provided on one side of the rear end of the support plate (2), and an adjustment hole (12) is provided on the upper adjustment plate (11), and a detachable adjustment pin (13) is provided in the adjustment hole (12), and the adjustment pin (13) is inserted into a positioning hole (6); a connecting piece (14) is provided on the other side of the rear end of the support plate (2), and one end of the connecting piece (14) is rotatably engaged with the support plate (2), and the other end of the connecting piece (14) is sleeved on the outside of the support column (7), and the connecting piece (14) is locked by an adjustment nut (8); S2, the tooling is mounted on a boring machine in step S1, the base plate (1) is leveled so that the parallelism between the base plate (1) and the horizontal plane is within 0.03 mm, and the four sides of the base plate (1) are used as references for alignment, and after alignment, the base plate (1) is clamped; S3, placing the blade cascade on the support plate (2), with the front end of the blade cascade located at the front end of the support plate (2), and using a feeler gauge to level the blade cascade and then press the blade cascade tightly; S4, rotating the support plate (2) until the end surface of the blade cascade is in a vertical state, then inserting the adjustment pin (13) into the adjustment hole (12) and the corresponding positioning hole (6), and locking the connecting piece (14) using the adjustment nut (8); S5, blade end face connection cutter, milling blade end face, blade end face parallelism within 0.02mm; A rectangular positioning plate (15) is provided on the upper surface of the support plate (2), a rotating shaft (16) is provided on the lower surface of the front end of the positioning plate (15), and the rotating shaft (16) is rotatably matched with the support plate (2); a guide block (17) is fixedly provided on the lower surface of the rear end of the positioning plate (15), and an arc-shaped guide groove (18) is provided on the upper surface of the rear end of the support plate (2), the center of the circle corresponding to the guide groove (18) coincides with the center of the rotating shaft (16), and the guide block (17) is located in the guide groove (18) and slidably matches with the guide groove (18); A first limiting block (19) and a second limiting block (20) are fixedly arranged at the rear end of the support plate (2), the first limiting block (19) and the second limiting block (20) are respectively located on both sides of the positioning plate (15), the side wall of the first limiting block (19) facing the second limiting block (20) is the first limiting side surface, the side surface of the second limiting block (20) facing the first limiting block (19) is the second limiting side surface, and the angle between the first limiting side surface and the second limiting side surface is 45°; one side or both sides of the positioning plate (15) are hingedly connected with a telescopic locking mechanism (21); In step S3, the positioning plate (15) is pushed to rotate by using the telescopic locking mechanism (21) so that one side of the positioning plate (15) is closely attached to the first limiting side; the blade cascade is placed on the positioning plate (15) with both ends of the blade cascade extending outside the positioning plate (15); a clamp is installed on the positioning plate (15); the blade cascade is leveled by using a feeler gauge to ensure that the radial direction of the front end of the blade cascade is parallel to the front end surface of the positioning plate (15); and the blade cascade is pressed by using the clamp; In step S5, the front end face of the blade cascade is first processed. After the processing is completed, the telescopic locking mechanism (21) is used to push the positioning plate (15) to rotate 45 degrees, so that the other side face of the positioning plate (15) is close to the second limiting side face, and then the milling cutter is moved to the rear end face of the blade cascade to process the rear end face of the blade cascade.

2. The blade end face milling method according to claim 1, characterized in that; The number of the adjusting holes (12) is N, N≥3, and the adjusting holes (12) are uniformly distributed along the radial direction of the supporting hole; the number of the positioning holes (6) is N groups, each group of positioning holes (6) corresponds to one adjusting hole (12), each group of positioning holes (6) is uniformly distributed in an arc shape with the supporting hole as the center, and the radial distance from each group of positioning holes (6) to the supporting hole is equal to the radial distance from the corresponding adjusting hole (12) to the supporting hole.

3. The blade end face milling method according to claim 1, characterized in that: The telescopic locking mechanism (21) is a hydraulic cylinder, the piston rod of the hydraulic cylinder is hinged to the positioning plate (15), and the cylinder body of the hydraulic cylinder is hinged to the support plate (2).

4. The blade end milling method according to claim 1, characterized in that: The support plate (2) is provided with a plurality of rows of mounting through holes (22). In step S3, a clamp for pressing the blade grid is mounted in the mounting through holes (22).

5. The blade end face milling method according to claim 4, characterized in that; There are a plurality of clamps for pressing the cascade, each of which comprises a lower plate (24) and a pressing plate (25), a column (26) and a stud (27) perpendicular to the lower plate (24) being fixedly arranged on the lower plate (24), one end of the pressing plate (25) being sleeved on the column (26) and loosely fitted with the column (26), a middle portion of the pressing plate (25) being sleeved on the stud (27) and loosely fitted with the stud (27), and a locking nut (28) being arranged on the stud (27) above the pressing plate (25); When the blade grid is compressed, the lower plate (24) is moved to the bottom of the support plate (2), the columns (26) and the studs (27) are aligned with the mounting through holes (22) respectively, and then the lower plate (24) is moved upward so that the columns (26) and the studs (27) pass through the mounting through holes (22), and then the pressing plate (25) is sleeved on the columns (26) and the studs (27), and then the locking nuts (28) are installed on the studs (27), and the locking nuts (28) are rotated so that the locking nuts (28) move downward, and the pressing plate (25) is pushed to compress the blade grid.

6. The blade end face milling method according to claim 1, characterized in that; A lifting mechanism (23) is provided between the bottom plate (1) and the support plate (2).

7. The blade end face milling method according to claim 6, characterized in that: The lifting mechanism (23) is a hydraulic cylinder, the piston rod of the hydraulic cylinder is hinged to the support plate (2), and the cylinder body of the hydraulic cylinder is hinged to the bottom plate (1).

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