Blade batch clamping tool and posture switching method

Abstract

This invention belongs to the field of tooling and fixture design technology in laser cladding repair of aerospace products, specifically relating to a tooling for batch clamping of blades and a method for attitude switching. The tooling includes a base, a support and positioning structure, and a blade clamping structure. This tooling is easy to operate and highly practical. By setting built-in springs and sliders on the blade cells, it achieves automatic blade locking, shortening clamping time and reducing the welding repair cycle. By setting a rotary kinematic pair on the support plate, this tooling achieves angle switching functionality, greatly shortening working time and improving labor productivity; compared with existing blade positioning, clamping, and repair processes, it reduces labor intensity and improves product repair quality.

Description

Technical Field

[0001] This invention belongs to the field of tooling and fixture design technology in laser cladding repair technology for aerospace products, specifically involving a tooling for batch clamping of blades and a method for attitude switching. Background Technology

[0002] Aircraft engine blades are one of the core components of an engine. Repairing and reusing damaged engine blades has long been a challenging problem requiring ongoing research and exploration. The emerging laser cladding welding technology has further advanced this field by repairing damaged areas of the blades. Because the main profile of the blade is a complex free-form surface, and the tenon at the blade's base is an irregular inverted "T" shape, the positioning and protection requirements during maintenance are very high. If the expected protective effect is not met, problems such as vibration and misalignment may occur during maintenance, further damaging the blade and shortening its service life.

[0003] However, when performing single-piece repair on blades using existing laser cladding technology, the blades are clamped and fixed using planar fixtures such as vises. The clamping surfaces cannot fit the blade tenon profile, resulting in poor clamping effect and easy damage to the blade tenon. In addition, the repair angle θ needs to be switched during the blade repair process. Existing planar fixtures such as vises have long angle switching cycles, poor accuracy, and low work efficiency.

[0004] When repairing blades in batches, the large number of blades to be repaired, the long working cycle, and the complicated operation process make it easier for human error to occur, resulting in significant differences in the quality of the repaired blades and making it impossible to effectively guarantee the consistency of the repair quality.

[0005] To shorten the repair cycle, simplify the repair process, and improve the repair quality, it is necessary to design a tooling for batch clamping of blades and a method for attitude switching. Summary of the Invention

[0006] This invention aims to solve the problems of cumbersome blade positioning and clamping, long adjustment cycle, and inability to guarantee repair quality in batch repairs during laser cladding repair of low-pressure first-stage turbine blades of aero-engines. To this end, it provides a blade batch clamping fixture and attitude switching method, thereby ensuring safe and controllable repair quality and efficient and convenient repair work.

[0007] The inventive concept of this invention:

[0008] During the maintenance and support of domestic aero-engines, the applicant frequently encounters situations where low-pressure first-stage turbine blades of aero-engines have reached the end of their service life or no longer meet operational requirements, necessitating blade repair. Through long-term maintenance experience, our analysis of blade damage has revealed that damage is mostly concentrated in the blade sealing section and the blade fin, forming a repair angle θ°. Therefore, during laser cladding repair, repeated adjustments to the blade's repair attitude are necessary. Existing planar clamps such as vises suffer from long angle switching cycles, poor accuracy, and low work efficiency.

[0009] Therefore, in response to this angular characteristic, the present invention designs a support plate for clamping the blade and two positioning plates with through holes at an angle of θ°. One end of the support plate is provided with a "U"-shaped inner ring groove that can rotate around the support positioning column, and the other end is provided with mounting holes on both sides for installing knob plungers. The two knob plungers pass through the positioning plates and are fixed on both sides of the support plate. By switching between different knob plungers set at an angle of θ°, the support plate can be switched between two fixed postures, so that the blade can be easily and quickly adjusted for repair.

[0010] The technical solution of this invention is as follows:

[0011] A tooling for batch clamping of blades, characterized by:

[0012] Includes a base, a support and positioning structure, and a blade clamping structure;

[0013] The support positioning structure includes a support positioning column, a knob plunger, and a positioning plate;

[0014] The two positioning plates are vertically arranged at both ends of the base and are parallel to each other; each of the two positioning plates is provided with three corresponding through holes: hole A, hole B, and hole C; the angle θ between the line connecting the centers of holes A and B and the line connecting the centers of holes A and C is determined according to the clamping posture during the two repairs of the blade; the supporting positioning post is arranged between the two positioning plates and is parallel to the upper surface of the base, with both ends of the supporting positioning post set in holes A of the two positioning plates respectively; the knob plunger is used to be set in holes B and C of the two positioning plates;

[0015] The blade clamping structure includes a support plate and several blade cells;

[0016] The support plate is L-shaped and consists of a long plate and a short plate perpendicularly.

[0017] The upper end of the long plate is provided with a rotary kinematic pair that cooperates with the support positioning column. The support plate is mounted on the support positioning column and rotates along the support positioning column. The lower end of the long plate is provided with mounting holes on both sides coaxially that cooperate with the knob plunger.

[0018] The blade cells used for clamping the blade tenons are mounted on the short plate.

[0019] Furthermore, the blade clamping structure also includes a limiting plate;

[0020] The upper surface of the short plate is provided with a track along the length of the support positioning column, and the plurality of blade cells are arranged in the track;

[0021] The cross-sectional profile of the limiting plate is consistent with that of the support plate. The limiting plate is installed on the side end face of the support plate by fasteners to limit the blade cell in the track. After the limiting plate and the support plate form an integral structure, the two ends of the integral structure are provided with mounting holes that cooperate with the knob plunger.

[0022] Furthermore, the blade cell includes a cell body, a cell baffle, and a slider;

[0023] The cell body has a first step and a second step, with the first step being higher than the second step;

[0024] The cell baffle is fixed to the side of the cell body with fasteners;

[0025] A hollow cylinder perpendicular to the plane of the cell baffle is provided on the plane facing the cell body. The cylinder has an internal spring, the natural length of which is greater than the length of the cylinder. The cylinder is positioned above the second step and below the first step.

[0026] The upper surface of the second step has a slide rail perpendicular to the cell baffle at one end near the cell baffle, and a slide rail baffle at the other end; the length of the slide rail is less than the length of the cylinder;

[0027] The slider engages with the slide rail on the second step, and the top surface of the slider is not higher than the step surface of the second step; one side of the slider is provided with an annular groove, which engages with the cylinder; the slider is fitted onto one end of the cylinder through the annular groove; the other end face of the slider and the end face of the slide rail baffle are provided with an "L" shaped surface, and the two "L" shaped surfaces together form an inverted "T" shaped tenon, which is adapted to the blade tenon; the inner wall of the annular groove of the slider and the inner wall of the cylinder form a spring track for the built-in spring, and the cylinder 10 can be inserted into the annular groove so that the built-in spring is under compression.

[0028] The bottom of the slider is provided with a slider tenon, and the slide rail is adapted to the slider tenon.

[0029] Furthermore, the track is an inverted "T" shaped track; the bottom of each blade cell has an inverted "T" shaped structure that fits the track; the plurality of blade cells are arranged and installed in the track through the inverted "T" shaped structure;

[0030] The slider tenon is an inverted "T" shaped slider tenon, and the slide rail is an inverted "T" shaped slide rail.

[0031] Furthermore, in order to improve the flexibility of tooling use, the surface roughness requirements for the mating surfaces of the cell inverted "T" shaped tenon and groove structure and the blade tenon, the cell inverted "T" shaped structure and the track, and the inverted "T" shaped slider tenon and the slide rail structure are all Ra not less than 0.8μm.

[0032] Furthermore, to facilitate pushing the slider, a protrusion is provided on the slider.

[0033] Furthermore, the rotary kinematic pair is a "U"-shaped inner annular groove, and the support positioning column is nested in the "U"-shaped inner annular groove, so as to realize the circumferential rotation of the support plate along the support positioning column.

[0034] Furthermore, the flatness tolerance of the base is required to be no greater than 0.05.

[0035] A method for switching blade clamping attitudes using the aforementioned blade batch clamping fixture is characterized by the following steps:

[0036] Step 1: Arrange and install several assembled blade cells in the track in sequence, and lock them to the support plate with the limiting plate;

[0037] Step 2: Push the slider on the blade cell along the axis of the slide rail until the length of the inverted "T" shaped tenon formed by the slide rail baffle and the slider is greater than the width of the blade tenon. Hold this position and then push the blade tenon into the inverted "T" shaped tenon.

[0038] Step 3: Slowly release the slider so that the slide rail baffle and the slider make contact with the blade tenon, ensuring that the blade tenon is locked in the inverted "T" shaped tenon groove, thus fixing the blade;

[0039] Step 4: Install the support positioning column on the two positioning plates, install the two positioning plates on the base, align the mounting holes of the support plate with the "B" hole, and then insert the two knob plungers through the two positioning plates into the mounting holes of the limit plate and the support plate to complete the clamping of the blade.

[0040] Step 5: Perform the first batch repair of the blades in this posture; after the repair is completed, remove the two knob plungers mounted on the support plate so that the support plate can rotate freely around the support positioning column;

[0041] Step 6: Change the angle of the support plate so that the mounting hole of the support plate is aligned with the "C hole". Then, insert the two knob plungers through the two positioning plates and install them in the mounting holes of the limit plate and the support plate to complete the secondary clamping of the blade.

[0042] Step 7: Perform a second batch of blade repairs in this posture.

[0043] Compared with the prior art, the beneficial effects of the present invention are:

[0044] 1. The present invention has a simple structure, is easy to use, reduces labor intensity, and improves clamping efficiency.

[0045] 2. This invention addresses blade damage by rotating a support plate around a support positioning column and fixing the support plate at an angle of θ° using a knob plunger. This allows for rapid switching of the blade clamping structure angle, improving blade repair efficiency and ensuring safe and controllable repair quality.

[0046] 3. The present invention uses a tenon groove formed by the cell body and the slide rail baffle to match the blade tenon, thereby locking the blade onto the support plate, improving the fit between the tooling and the blade, ensuring clamping accuracy, and improving clamping reliability.

[0047] 4. This invention uses a slider to fix the blade under the clamping force of a spring, which simplifies the clamping process, saves manpower, and improves the efficiency of assembly and disassembly.

[0048] 5. This invention sets multiple blade cells to be installed and locked onto the support plate using inverted "T" shaped tenons. While ensuring clamping accuracy, it reduces the number of times the welding head and blade need to be machined and positioned, shortens the clamping time, effectively compresses the welding repair cycle, and realizes batch repair of blades.

[0049] 6. In this invention, the surface roughness of the mating surface between the slider and the slide rail is not less than Ra0.8μm, which improves the flexibility of tooling use.

[0050] 7. The material used in this invention is 45# steel. To prevent rust during subsequent use, the surface is chemically oxidized to ensure the sustainable use of the tooling.

[0051] 8. This invention can be used not only for clamping turbine blades, but also for clamping other types of blades at other clamping angles, such as steam turbine blades and centrifuge blades, and has a wide range of applications. Attached Figure Description

[0052] Figure 1 A three-dimensional schematic diagram of a tooling for batch assembly of blades;

[0053] Figure 2 Front view of the tooling for batch clamping of blades;

[0054] Figure 3 Top view of the tooling for batch blade clamping;

[0055] Figure 4 Axonometric view of the blade cells;

[0056] Figure 5This is a cross-sectional view of the left side of the tooling for batch blade assembly.

[0057] Figure 6 This is a schematic diagram of the left positioning plate structure;

[0058] Figure 7 For the isometric drawing of the support plate;

[0059] Figure 8 This is a side view of the support plate;

[0060] Figure 9 This is a side view of the support plate;

[0061] Figure 10 Isometric drawing of the limiting plate;

[0062] Figure 11 Isometric view of the slider;

[0063] Figure 12 This is a side perspective view of the slider;

[0064] Figure 13 This is a front sectional view of the slider;

[0065] Figure 14 This is a top sectional view of the slider.

[0066] Figure label:

[0067] 1-Left positioning plate; 2-Right positioning plate; 3-Support plate; 4-Base; 5-Blade cell; 6-Knob plunger; 7-Slider; 8-Slide rail; 9-Cell cell baffle; 10-Cylinder; 11-Slide rail baffle; 12-Hole A; 13-Hole B; 14-Hole C; 15-Railway; 16-“U”-shaped inner ring groove; 17-Limiting plate. Detailed Implementation

[0068] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0069] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0070] This embodiment presents a blade batch clamping fixture, which is entirely made of 45# steel and undergoes chemical oxidation treatment to prevent corrosion during subsequent use and ensure the fixture's sustainable use. The fixture includes a base, a support and positioning structure, and a blade clamping structure.

[0071] like Figure 1 , Figure 2 , Figure 3 As shown, the support and positioning structure consists of a support and positioning column, four rotary plungers, and two positioning plates.

[0072] The left positioning plate 1 and the right positioning plate 2 are vertically fixed to both ends of the base by bolts and are parallel to each other. The bolts connecting the base 4 and the positioning plates are preferably 90° cross-slot countersunk bolts. In order to keep the base 4 level, the bolts are screwed into the base body, and the bolt heads are required to be flush with the lower plane of the base. During operation, the base 4 is placed horizontally on the welding platform without end face warping or local stress. Therefore, a high flatness requirement is required. The flatness tolerance of the base is required to be no greater than 0.05 to fully ensure the positioning accuracy of the base and the positioning plates.

[0073] like Figure 5 , Figure 6 As shown, the left positioning plate 1 and the right positioning plate 2 are respectively provided with three holes: hole A, hole B and hole C, where hole A is a blind hole facing inward, and holes B and C are through holes; in this embodiment, the angle θ between the line connecting the centers of holes A and B and the line connecting the centers of holes A and C is determined to be 75° according to the clamping posture during the two repairs of the blade; the two ends of the support positioning column are respectively set in holes A of the two positioning plates and are parallel to the upper end surface of the base; the four knob plungers 6 are respectively installed in holes B and C of the two positioning plates.

[0074] The blade clamping structure includes a support plate 3, a limiting plate 17, and several blade cells 5, which in this embodiment are ten blade cells 5.

[0075] like Figure 5 , Figure 7 , Figure 8 , Figure 9As shown, the side of the support plate 3 is L-shaped and is composed of a long plate and a short plate perpendicularly. The sum of the length of the support plate 3 and the thickness of the limiting plate 17 is equal to the distance between the two positioning plates, and the height of the long plate is less than the height of the positioning plate.

[0076] The upper end of the long plate is provided with a rotary kinematic pair. In this embodiment, the rotary kinematic pair is a nested engagement between the support positioning column and the "U"-shaped inner ring groove 16 at the upper end of the long plate. The support positioning column fixes the support plate through this nesting relationship and realizes the rotation of the support plate 3 along the support positioning column.

[0077] A track 15 extending along the length of the support plate 3 is provided on the upper surface of the short plate, and several blade cells are arranged within the track 15. Preferably, the track 15 is an inverted "T" shaped track, and the bottom of the blade cell 5 is provided with an inverted "T" shaped structure that is adapted to the track 15. Several blade cells 5 are arranged and installed within the track 15 through the inverted "T" shaped structure. In this embodiment, ten blade cells 5 are installed within the track 15. Figure 1 , Figure 2 , Figure 3 As shown. The surface roughness requirement for the mating surface between the blade cell inverted "T" shaped structure and track 15 is Ra not less than 0.8μm.

[0078] like Figure 10 As shown, the cross-sectional profile of the limiting plate is consistent with that of the support plate, and the limiting plate 17 mates with the side end face of the support plate 3. Two threaded blind holes are provided on the side end face of the short plate near the opening of the track 15, and the limiting plate 17 correspondingly has two countersunk through holes. Using the threaded blind holes and countersunk through holes, the limiting plate 17 is installed on the side end face of the support plate 3 with countersunk screws to limit the blade cell 5 within the track 15. Using the limiting plate 17 to limit the blade cell 5 within the track 15 is the preferred solution. In actual use, the blade cell 5 within the track 15 can be directly limited by a positioning plate on one side. However, with this method, the blade cell 5 within the track 15 lacks limiting constraint during the installation of the support plate onto the support positioning column, posing a risk of slippage.

[0079] After the limiting plate 17 and the support plate 3 form an integral structure, coaxial mounting holes for mounting knob plungers are provided on two outer sides of the integral structure. The mounting holes are matched with the dimensions of the knob plungers 6. When the knob plunger passes through hole B or hole C on the positioning plate, it can mate with the mounting holes on the outer side of the integral structure to fix the integral structure to the positioning plate. The posture switching function of the support plate 3 is realized by mates between the mounting holes on the outer side of the integral structure and the holes B or C on the positioning plate.

[0080] like Figure 4 As shown, the blade cell 5 includes the cell body, cell baffle 9, and slider 7.

[0081] The cell body has a first step and a second step, with the first step being higher than the second step. Three threaded blind holes are located on the side of the cell body, one on the side end face of the first step and one on the side end face of the second step. The cell baffle 9 has threaded through holes of the same number and opposite position to the threaded blind holes on the cell body. Bolts pass through the threaded through holes and are positioned within the threaded blind holes to fix the cell baffle 9 to the side of the cell body.

[0082] A hollow cylinder 10, perpendicular to the plane of the cell baffle 9, is provided on the plane facing the cell body. An internal spring (not shown) is located inside the cylinder 10. The natural length of the internal spring is greater than the length of the cylinder 10. The cylinder 10 is positioned above the second step and below the first step. A slide rail 8, perpendicular to the cell baffle 9, is provided at one end of the upper surface of the second step near the cell baffle 9, and a slide rail baffle 11 is provided at the other end. The length of the slide rail 8 is less than the length of the cylinder 10.

[0083] like Figure 4 , Figure 11 , Figure 12 , Figure 13 , Figure 14 As shown, slider 7 is set on the second step. Since the upper end of the tenon is the bottom end face of the blade, if slider 7 is too high, it will damage the bottom end face of the blade. Therefore, the top surface of slider 7 is not higher than the step surface of the second step. One side of slider 7 is provided with an annular groove, which matches the cylinder 10. The other end face of slider 7 and the end face of slide rail baffle 11 are both provided with "L" shaped surfaces. The two "L" shaped surfaces together form an inverted "T" shaped tenon, which matches the inverted "T" shaped tenon of the blade. The surface roughness requirement of the structural mating surface between the inverted "T" shaped tenon of the unit cell and the blade tenon is Ra not less than 0.8μm.

[0084] The bottom of the slider 7 is provided with an inverted "T" shaped slider tenon, and the slide rail 8 is an inverted "T" shaped slide rail. The surface roughness requirement of the mating surface between the inverted "T" shaped slider tenon and the slide rail 8 is not less than Ra 0.8μm.

[0085] The inner wall of the annular groove and the inner wall of the cylinder together form the spring track of the built-in spring. The cylinder 10 can be inserted into the annular groove, so that the built-in spring is under compression.

[0086] The slider 7 is fitted onto the cylinder 10 through an annular groove and can slide along the length of the cylinder 10. Preferably, the slider 7 is provided with a protrusion, which makes it easier for the operator to push the slider, reducing the difficulty of operation and improving work efficiency.

[0087] When the blade is clamped in the blade cell 5, the two ends of the built-in spring contact the slider 7 and the cell baffle 9 respectively, are in a compressed state and apply a clamping force to the slider 7. The slider 7 axially presses the blade and locks the blade on the support plate 3. While ensuring clamping accuracy, it reduces the number of processing and positioning steps between the welding head and the blade, shortens the clamping time, effectively compresses the welding repair cycle, and improves work efficiency.

[0088] The method for switching the clamping attitude of the blades using this embodiment:

[0089] Step 1: Arrange and lock the 10 assembled blade cells 5 into the track 15 on the support plate in an inverted "T" shape;

[0090] Step 2: Push the slider 7 on the blade cell along the axis of the slide rail until the length of the inverted "T" shaped tenon formed by the slide rail baffle 11 and the slider 7 is greater than the width of the blade tenon. Keep this state and then push the blade tenon into the inverted "T" shaped tenon.

[0091] Step 3: Slowly release the slider 7 so that the slide rail baffle 11 and the slider 7 contact the blade tenon together, ensuring that the blade tenon is locked in the inverted "T" shaped tenon. At this time, the spring inside the slide rail is in a compressed state, and a clamping force is applied to the slider along the spring track direction, so that the slider 7 axially presses the blade tenon, thereby fixing the blade.

[0092] Step 4: Install the support positioning column on the two positioning plates, install the two positioning plates on the base 4, hang the "U"-shaped inner ring groove of the integral structure composed of the limiting plate 17 and the support plate 3 on the support positioning column, align the mounting hole on the side of the integral structure with the "B" hole, and then install the two knob plungers 6 through the two positioning plates into the mounting holes on the side of the integral structure to fix the integral structure together and complete the clamping of the blade.

[0093] Step 5: Perform the first batch repair of the blades in this posture; after the repair is completed, remove the knob plunger 6 on the "B" hole so that the overall structure can rotate freely around the support positioning column;

[0094] Step 6: Change the angle of the overall structure, align the mounting hole on the side of the overall structure with the "C" hole, and then insert the two knob plungers 6 through the two positioning plates and install them in the mounting holes on the side of the overall structure to fix the overall structure together and complete the secondary clamping of the blade.

[0095] Step 7: Perform a second batch of blade repairs in this posture.

[0096] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the scope of the technology disclosed in the present invention, and such modifications or substitutions should all be covered within the scope of protection of the present invention.

Claims

1. A tooling for batch clamping of blades, characterized in that: Includes a base, a support and positioning structure, and a blade clamping structure; The support positioning structure includes a support positioning column, a knob plunger, and a positioning plate; The two positioning plates are vertically arranged at both ends of the base and are parallel to each other; each of the two positioning plates is provided with three corresponding through holes: hole A, hole B, and hole C; the angle θ between the line connecting the centers of holes A and B and the line connecting the centers of holes A and C is determined according to the clamping posture during the two repairs of the blade; the supporting positioning post is arranged between the two positioning plates and is parallel to the upper surface of the base, with both ends of the supporting positioning post set in holes A of the two positioning plates respectively; the knob plunger is used to be set in holes B and C of the two positioning plates; The blade clamping structure includes a support plate and several blade cells; The support plate is L-shaped and consists of a long plate and a short plate perpendicularly. The upper end of the long plate is provided with a rotary kinematic pair that cooperates with the support positioning column. It has a "U"-shaped inner ring groove structure. The support plate is nested on the support positioning column through the "U"-shaped inner ring groove, so that the support plate can rotate around the support positioning column. The lower end of the long plate has mounting holes on both sides that cooperate with the knob plunger. The upper surface of the short plate is provided with an inverted "T" shaped track along the direction of the support positioning column, which is used to place several blade cell units for clamping the blade tenon; A single leaf cell in the plurality of leaf cells includes a cell body, a cell baffle, and a slider; The cell body has a first step and a second step, with the first step being higher than the second step; The cell baffle is fixed to the side of the cell body by fasteners; A hollow cylinder perpendicular to the plane of the cell baffle is provided on the plane facing the cell body. The cylinder has an internal spring, the natural length of which is greater than the length of the cylinder. The cylinder is positioned above the second step and below the first step. The upper surface of the second step has a slide rail perpendicular to the cell baffle at one end near the cell baffle, and a slide rail baffle at the other end; the length of the slide rail is less than the length of the cylinder; The slider engages with the slide rail on the second step, and the top surface of the slider is not higher than the step surface of the second step. One side of the slider has an annular groove that engages with a cylinder. The slider is fitted onto one end of the cylinder through the annular groove. The other end face of the slider and the end face of the slide rail baffle have an "L"-shaped surface, and the two "L"-shaped surfaces together form an inverted "T"-shaped tenon, which is adapted to the blade tenon. The inner wall of the annular groove of the slider and the inner wall of the cylinder form a spring track for the built-in spring, allowing the cylinder to be inserted into the annular groove, thus compressing the built-in spring. The bottom of the slider is provided with an inverted "T" shaped slider tenon, which is adapted to the inverted "T" shaped slide rail on the second step; The bottom of each blade cell has an inverted "T" shaped structure that matches the inverted "T" shaped track on the upper surface of the short plate; the plurality of blade cells are arranged and installed in the track on the upper surface of the short plate through the inverted "T" shaped structure.

2. The blade batch clamping fixture according to claim 1, characterized in that: The blade clamping structure also includes a limiting plate; The cross-sectional profile of the limiting plate is consistent with that of the support plate. The limiting plate is installed on the side end face of the support plate by fasteners to limit the blade cell in the track. After the limiting plate and the support plate form an integral structure, the two outer sides of the integral structure are coaxially provided with mounting holes that cooperate with the knob plunger.

3. The blade batch clamping fixture according to claim 1, characterized in that: The surface roughness requirements for the structural mating surfaces of the inverted "T" shaped tenon and slot structure of the cell and the blade tenon, the structural mating surfaces of the inverted "T" shaped tenon and the track, and the structural mating surfaces of the inverted "T" shaped slider tenon and the slide rail are all Ra not less than 0.8μm.

4. The blade batch clamping fixture according to claim 1, characterized in that: The slider has a protrusion.

5. The blade batch clamping fixture according to claim 1, characterized in that: The flatness tolerance of the base is required to be no greater than 0.

05.

6. A method for switching blade clamping postures using any one of the blade batch clamping fixtures described in claims 1 to 5, characterized in that, Includes the following steps: Step 1: Arrange and install several assembled blade cells in the track in sequence, and lock them to the support plate with the limiting plate; Step 2: Push the slider on the blade cell along the axis of the slide rail until the length of the inverted "T" shaped tenon formed by the slide rail baffle and the slider is greater than the width of the blade tenon. Hold this position and then push the blade tenon into the inverted "T" shaped tenon. Step 3: Slowly release the slider so that the slide rail baffle and the slider make contact with the blade tenon, ensuring that the blade tenon is locked in the inverted "T" shaped tenon, thus fixing the blade; Step 4: Install the support positioning column on the two positioning plates, install the two positioning plates on the base, hang the "U"-shaped inner ring groove of the integral structure composed of the limiting plate and the support plate on the support positioning column, align the mounting hole on the side of the integral structure with the "B" hole, and then pass the two knob plungers through the two positioning plates and install them in the mounting holes on the side of the integral structure to fix the integral structure together and complete the clamping of the blade. Step 5: Perform the first batch repair of the blades in this posture; after the repair is completed, remove the knob plunger on the "B" hole to allow the support plate to rotate freely around the support positioning column; Step 6: Change the angle of the overall structure, align the mounting hole on the side of the overall structure with the "C" hole, and then pass the two knob plungers through the two positioning plates and install them in the mounting holes on the side of the overall structure to fix the overall structure together, thus completing the secondary clamping of the blade. Step 7: Perform a second batch of blade repairs in this posture.

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