Drill bit positioning sleeve for aircraft structure repair

Abstract

The drill bit positioning sleeve structurally comprises a positioning rod, a supporting mechanism, a sleeve body, a maintenance table and a movable plate, the sleeve body is fixedly embedded in the side face of the positioning rod and located over the supporting mechanism, the positioning rod is fixedly embedded in the upper end of the maintenance table, and the supporting mechanism is installed at the upper end in the maintenance table; the horizontal plate is pushed by the movable plate, so that the stress block is separated from the position of the stop block after the stop plate is pushed, and then the supporting cambered surface can be adjusted according to the radian of an arc-shaped part structure; when a sleeve is driven by an electric drill to move downwards, an opening plate extrudes and slides on the inner wall of a fixing rod under elastic compression of a triangular block, and then a sliding plate and a spring rod generate stable supporting force on the side face and the lower face of a transmission rod; and deviation caused by unstable downward drilling force of the sleeve is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of positioning sleeves, and more specifically, to a drill positioning sleeve for aircraft structure repair. Background Art

[0002] Aircraft structure maintenance usually uses new parts to replace broken parts, and uses rivets or other connection methods that require drilling to fix the part structure. During maintenance, the drilling is in a rotating extrusion state, and its positioning sleeve can limit the position of the drilling, so that the drill bit can drill on a certain straight line to prevent the drill bit from being squeezed and rotated by the part and sliding out of the straight drilling state.

[0003] However, the sleeve needs to be in contact with the part, and the drill bit will move when drilling, which requires the sleeve to move. As a result, the sleeve is unstable during displacement and easily causes offset and tilt, which easily leads to unstable contact state of the drill bit and poor positioning effect for drilling. In addition, when repairing curved parts, the curved parts are placed on a plane and both ends are fixed during drilling. The impact force of drilling can easily cause the curved parts to be squeezed inward, which can easily cause the curved parts to bend and deform. As a result, parts with different curvatures cannot be supported and fixed in a limited manner, which affects the structural integrity of the curved parts during repair. Summary of the invention

[0004] The technical solution adopted by the present invention to achieve the technical purpose is: a drill bit positioning sleeve for aircraft structure repair, the structure of which includes a positioning rod, a support mechanism, a sleeve, a maintenance platform, and a movable plate. The sleeve is embedded in the side of the positioning rod, the sleeve is located directly above the support mechanism, the positioning rod is embedded in the upper end of the maintenance platform, the support mechanism is installed at the upper end of the maintenance platform, the movable plate is embedded in the outer side of the lower end of the support mechanism, and the movable plate is matched with the internal clearance on the left and right sides of the maintenance platform. The support mechanism is provided with a rubber plate, a clamping mechanism, a support plate, and a curved plate. The upper end of the support plate is embedded in the inner side of the arc panel, the outer side of the lower end of the support plate is clamped in the rubber plate, and the support plate passes through the rubber plate and cooperates with the hinge inside the maintenance platform. The lower surface of the arc panel is embedded in the upper end of the clamping mechanism, the clamping mechanism is installed inside the maintenance platform, and the rubber plate is installed at the middle upper end of the maintenance platform. There are two clamping mechanisms, which are symmetrically distributed with the rubber plate as the center. A hollow hole is provided in the middle of the arc panel, and the hollow hole is located directly below the sleeve. The support plate and the arc panel are made of aluminum alloy, which has the characteristics of strong toughness and easy deformation and bending.

[0005] As a further improvement of the present invention, the locking mechanism is provided with a trapezoidal block, a blocking plate, a round bar, a spring, a connecting plate and a blocking block. The spring is embedded in the lower end of the blocking plate, the round bar is slidably matched with the upper end of the blocking plate, the round bar is engaged with the lower end of the connecting plate, the trapezoidal block is attached to the upper end of the connecting plate, the blocking plate is movably matched on the side of the blocking block, the lower end of the spring is embedded in the upper end of the maintenance table, the blocking block is installed on the inner side of the maintenance table, the upper end of the trapezoidal block is embedded in the lower surface of the arc panel, the blocking blocks are symmetrically distributed with the spring as the central axis, and the upper and lower spacing distances of the blocking blocks are consistent, and they are arranged up and down. Two round bars are provided, which have the effect of keeping the connecting plate in a horizontal state. The trapezoidal block is made of rubber and has the characteristics of deformation extrusion.

[0006] As a further improvement of the present invention, the blocking plate is provided with a force block, an arc groove, a support plate, and a horizontal plate. The force block is embedded in the outer side of the horizontal plate, the arc groove is located on the upper surface of the support plate, the spring is embedded in the lower end of the horizontal plate, the round bar is slidingly matched with the arc groove, and the force block is movably matched on the side of the blocking block. Two arc grooves are provided, which are consistent with the curvature of the round bar and have the effect of limited sliding fit. The force blocks are spaced apart on the left and right sides of the horizontal plate, and the force blocks on the same side are arranged and distributed at intervals.

[0007] As a further improvement of the present invention, the force-bearing block is provided with a fixed block, a compression plate, and a ball bearing. The ball bearing is movably engaged with the outside of the fixed block, the compression plate is attached to the upper surface of the fixed block, the fixed block is embedded in the left and right sides of the horizontal plate, the compression plate is made of rubber and has the characteristic of high friction. The thickness of the fixed block is slightly smaller than the interval between the upper and lower parts of the blocking block, and the lower side of the fixed block is gap-matched with the upper side of the blocking block.

[0008] As a further improvement of the present invention, the positioning rod is provided with a transmission rod, a sliding plate, a spring rod, a track plate, and a fixed rod. The sliding plate is embedded in the side of the transmission rod, the upper end of the spring rod is installed on the lower side of the transmission rod, the sliding plate slides in the track plate, the track plate is vertically installed on the inner side of the fixed rod, the lower end of the spring rod is embedded in the bottom of the track plate, the lower end of the fixed rod is embedded in the upper end of the maintenance platform, the right end of the transmission rod is embedded in the outside of the sleeve, the transmission rod is in a horizontal state, the track plates are provided with two, distributed on the left and right sides of the sliding plate, and the fixed rod is in a vertical state.

[0009] As a further improvement of the present invention, the sliding plate is provided with an opening plate, a limit rod, a load-bearing plate, and a triangular block. The triangular block is embedded in the outer side of the triangular block, and the triangular block is installed on the side of the load-bearing plate. The limit rod is embedded in the left and right sides of the load-bearing plate. The limit rod slides in the track plate, and the load-bearing plate is embedded in the side of the transmission rod. The triangular block is made of rubber material, has the characteristics of high elasticity and easy deformation, and the limit rod is provided with four, which are evenly and symmetrically distributed on the left and right sides of the load-bearing plate. The opening plate is made of aluminum alloy, has the characteristics of smooth surface and easy sliding, and the opening plates are provided with two, which are symmetrically distributed up and down with the load-bearing plate as the center. Beneficial Effects

[0010] 1. In the present invention, before drilling and repairing, both hands are used to press and move the movable plate on the side of the repair platform, and the blocking plate moves upward under the elastic force of the spring, driving the trapezoidal block on the upper end of the connecting plate to squeeze the arc panel, so that the left and right sides of the arc panel are opened to change the curvature, and the arc panel is adjusted and supported and fixed by two clamping mechanisms, so that the arc part structure is placed on the surface of the arc panel in the supporting mechanism, and the height of the clamping mechanism is adjusted by pressing the movable plate, and then the arc panel is changed under the support of the support plate and the clamping mechanism. The arc part structure is prevented from being easily bent and deformed and incomplete when drilling.

[0011] 2. In the present invention, when the horizontal plate is pushed by the movable plate, the force block pushes the blocking plate and then leaves the position of the blocking block, and moves upward under the elastic force of the spring, so that the fixed block contacts the lower side of the blocking block again, thereby achieving the effect of adjusting the height of the blocking plate, and then adjusting the support height of the outside of the arc panel to achieve the change of the curvature of the arc panel, and then the supporting arc surface can be adjusted according to the curvature of the arc-shaped part structure, so that the arc surface of the arc-shaped part structure is contacted and supported.

[0012] 3. In the present invention, when the sleeve is driven by the electric drill to move downward, the load-bearing plate is lifted and lowered horizontally through the vertical sliding of the left and right sets of limit rods and the track plate, and then the opening plate squeezes and slides on the inner wall of the fixed rod under the elastic compression of the triangular block, so that the opening plate in the open state supports and squeezes the load-bearing plate, and under the compressive elastic force of the spring rod, the transmission rod elastically supports the force exerted on the sleeve, and then the sliding plate and the spring rod generate a stable supporting force on the side and bottom of the transmission rod, preventing the downward drilling force of the sleeve from being unstable and deviating, thereby avoiding instability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a structural schematic diagram of a drill bit positioning sleeve for aircraft structure repair.

[0014] Figure 2 It is a schematic diagram of the side structure of a support mechanism of the present invention.

[0015] Figure 3It is a schematic diagram of the side structure of a locking mechanism of the present invention.

[0016] Figure 4 The figure is a schematic diagram of the three-dimensional structure of a blocking plate of the present invention.

[0017] Figure 5 The figure is a schematic diagram of the three-dimensional structure of a force-bearing block of the present invention.

[0018] Figure 6 The figure is a schematic diagram of the side structure of a positioning rod of the present invention.

[0019] Figure 7 The figure is a schematic diagram of the three-dimensional structure of a sliding plate of the present invention.

[0020] In the figure: positioning rod-1, supporting mechanism-2, sleeve-3, maintenance platform-4, movable plate-5, rubber plate-21, locking mechanism-22, supporting plate-23, arc panel-24, trapezoidal block-w1, blocking plate-w2, round bar-w3, spring-w4, connecting plate-w5, blocking block-w6, force block-w21, arc groove-w22, support plate-w23, horizontal plate-w24, fixed block-q1, compression plate-q2, ball-q3, transmission rod-t1, sliding plate-t2, spring rod-t3, track plate-t4, fixed rod-t5, opening plate-t21, limit rod-t22, load-bearing plate-t23, triangular block-t24. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings: Example

[0022] As attached Figure 1 To Attachment Figure 5 As shown: The present invention discloses a drill bit positioning sleeve for aircraft structure repair, which structure comprises a positioning rod 1, a supporting mechanism 2, a sleeve 3, a maintenance platform 4, and a movable plate 5. The sleeve 3 is embedded in the side of the positioning rod 1, the sleeve 3 is located directly above the supporting mechanism 2, the positioning rod 1 is embedded in the upper end of the maintenance platform 4, the supporting mechanism 2 is installed at the upper end of the maintenance platform 4, the movable plate 5 is embedded in the outer side of the lower end of the supporting mechanism 2, and the movable plate 5 is matched with the internal clearance on the left and right sides of the maintenance platform 4, and the supporting mechanism 2 is provided with a rubber The upper end of the support plate 23 is embedded in the inner side of the arc plate 24, and the outer side of the lower end of the support plate 23 is engaged with the inside of the rubber plate 21, and the support plate 23 passes through the rubber plate 21 and cooperates with the inner hinge of the maintenance platform 4. The lower surface of the arc plate 24 is embedded in the upper end of the locking mechanism 22, the locking mechanism 22 is installed in the maintenance platform 4, and the rubber plate 21 is installed in the middle upper end of the maintenance platform 4. The locking mechanism 22 is provided with two, with the rubber plate 21 as The center is symmetrically distributed left and right, and a hollow hole is provided in the middle of the arc panel 24, and the hollow hole is located directly below the sleeve 3. The support plate 23 and the arc panel 24 are made of aluminum alloy, which has the characteristics of strong toughness and easy deformation and bending. Therefore, the electric drill is held, and the drill bit passes through the sleeve 3, and then the non-rotating part of the electric drill contacts the sleeve 3, and then the electric drill is pressed downward, so that the sleeve 3 moves horizontally downward in the positioning rod 1, so that the drilling is in a vertical state, and the positioning rod 1 supports the sleeve 3 to keep the drilling stable. Before drilling maintenance, press and move the movable plate 5 on the side of the maintenance table 4 with both hands to place the arc-shaped part structure on the surface of the arc-shaped panel 24 in the support mechanism 2. The height of the locking mechanism 22 is adjusted by pressing the movable plate 5, and the arc-shaped panel 24 forms an open supporting state under the elastic support of the support plate 23 and the rubber plate 21. Then, the curvature of the arc-shaped panel 24 is changed under the support of the support plate 23 and the locking mechanism 22, so as to prevent the arc-shaped part structure from being easily bent and deformed and incomplete during drilling.

[0023] Among them, the locking mechanism 22 is provided with a trapezoidal block w1, a blocking plate w2, a round bar w3, a spring w4, a connecting plate w5, and a blocking block w6. The spring w4 is embedded in the lower end of the blocking plate w2, and the round bar w3 is slidably matched with the upper end of the blocking plate w2. The round bar w3 is engaged with the lower end of the connecting plate w5. The trapezoidal block w1 is attached to the upper end of the connecting plate w5, and the blocking plate w2 is movably matched on the side of the blocking block w6. The lower end of the spring w4 is embedded in the upper end of the maintenance platform 4, and the blocking block w6 is installed on the inner side of the maintenance platform 4. The upper end of the trapezoidal block w1 is embedded in the lower surface of the arc panel 24. The blocking block w6 is symmetrically distributed with the spring w4 as the central axis, and the upper and lower spacing distances of the blocking block w6 are consistent, and they are arranged up and down. Two round bars w3 are provided, which have the effect of keeping the connecting plate w5 in a horizontal state. The trapezoidal block w1 is rubber The material has the characteristic of deformation extrusion, so that the movable plate 5 is pressed downward to drive the blocking plate w2 to move downward, so that the blocking plate w2 is out of contact with the blocking block w6, and then the blocking plate w2 is pushed horizontally to make the blocking plate w2 out of the position of the blocking block w6. At the same time, the upper end of the blocking plate w2 slides with the round bar w3, and the blocking plate w2 moves upward under the elastic force of the spring w4. After the upward movement, the blocking plate w2 is pushed to contact the position of the blocking block w6, and the blocking plate w2 and the blocking block w6 are kept re-engaged under the elastic force of the spring w4, and then the height of the blocking plate w2 is kept adjusted under the elastic force of the spring w4, driving the trapezoidal block w1 at the upper end of the connecting plate w5 to squeeze the arc panel 24, so that the left and right sides of the arc panel 24 are opened to change the curvature, and the arc panel 24 is supported and fixed while adjusting the curvature through two locking mechanisms 22 to prevent the arc-shaped parts from not being stably supported when fixed.

[0024] The blocking plate w2 is provided with a force block w21, an arc groove w22, a support plate w23, and a horizontal plate w24. The force block w21 is embedded in the outer side of the horizontal plate w24. The arc groove w22 is located on the upper surface of the support plate w23. The spring w4 is embedded in the lower end of the horizontal plate w24. The round bar w3 is slidably matched with the arc groove w22. The force block w21 is movably matched with the side of the blocking block w6. The arc groove w22 is provided with two arc grooves, which are aligned with the arc of the round bar w3. The degree is consistent, and it has the effect of limited sliding cooperation. The force blocks w21 are distributed at intervals on the left and right sides of the horizontal plate w24, and the force blocks w21 on the same side are arranged at intervals. When the horizontal plate w24 is pushed by the movable plate 5, the horizontal plate w24 drives the arc groove w22 on the upper side of the support plate w23 and the round bar w3 to slide horizontally, and then the force block w21 breaks away from the position of the blocking block w6, and moves upward under the elastic force of the spring w4, thereby achieving the effect of adjusting the height of the blocking plate w2.

[0025] Among them, the force block w21 is provided with a fixed block q1, a compression plate q2, and a ball q3. The ball q3 is movably engaged with the outside of the fixed block q1, and the compression plate q2 is attached to the upper surface of the fixed block q1. The fixed block q1 is embedded in the left and right sides of the horizontal plate w24. The compression plate q2 is made of rubber and has the characteristic of large friction. The thickness of the fixed block q1 is slightly smaller than the interval between the upper and lower parts of the blocking block w6. The lower side of the fixed block q1 is gap-matched with the upper side of the blocking block w6, so that when the horizontal plate w24 is pushed, the ball q3 moves horizontally with the inner side of the maintenance platform 4, and then the fixed block q1 contacts the lower side of the blocking block w6 again, and under the elastic force of the spring w4, the compression plate q2 on the upper side of the fixed block q1 is driven to squeeze the lower side of the blocking block w6, thereby maintaining the elastic fixation of the horizontal plate w24. The specific usage and function of this embodiment are as follows: In the present invention, a hand-held electric drill is used to make the drill bit pass through the sleeve 3, and then the non-rotating part of the electric drill contacts with the sleeve 3, and then the electric drill is pressed downward to make the sleeve 3 move elastically horizontally downward in the positioning rod 1, so that the drill hole is in a vertical state, and the positioning rod 1 supports the sleeve 3 to keep the drill hole stable. Before drilling maintenance, the hand-held electric drill presses and moves the movable plate 5 on the side of the maintenance platform 4 with both hands, so that the movable plate 5 drives the blocking plate w2 to move downward, so that the blocking plate w2 is separated from the contact of the blocking block w6, and then pushes the blocking plate w2 horizontally to separate the blocking plate w2 from the position of the blocking block w6. At the same time, the upper end of the blocking plate w2 slides with the round bar w3, and the blocking plate w2 moves upward under the elastic force of the spring w4. After the upward movement, the blocking plate w2 is pushed to contact the position of the blocking block w6. The lower retaining blocking plate w2 is re-engaged with the blocking block w6, and then the height of the blocking plate w2 is kept adjusted under the elastic force of the spring w4, driving the trapezoidal block w1 at the upper end of the connecting plate w5 to squeeze the arc panel 24, so that the left and right sides of the arc panel 24 are opened and the curvature is changed. The arc panel 24 is adjusted in curvature and supported and fixed at the same time through two engaging mechanisms 22, so that the arc part structure is placed on the surface of the arc panel 24 in the supporting mechanism 2, and the height of the engaging mechanism 22 is adjusted by pressing the movable plate 5, and the arc panel 24 is elastically supported by the support plate 23 and the rubber plate 21 to form an open support state for the arc panel 24, and then the arc panel 24 is supported by the support plate 23 and the engaging mechanism 22. The curvature of the arc panel 24 is changed, thereby preventing the arc part structure from being easily bent and deformed and incomplete during drilling.

[0026] In the present invention, when the horizontal plate w24 is pushed by the movable plate 5, the horizontal plate w24 drives the arc groove w22 and the round bar w3 on the upper side of the support plate w23 to translate and slide, so that the ball q3 and the inner side of the maintenance platform 4 move horizontally, and then push the force block w21 behind the blocking plate w2 to separate from the position of the blocking block w6, and move upward under the elastic force of the spring w4, so that the fixed block q1 contacts the lower side of the blocking block w6 again, and drives the compression plate q2 on the upper side of the fixed block q1 to squeeze the lower side of the blocking block w6 under the elastic force of the spring w4, so as to maintain the elastic fixation of the horizontal plate w24, and achieve the effect of adjusting the height of the blocking plate w2, and then adjust the support height of the outside of the arc panel 24, so as to achieve the change of the curvature of the arc panel 24, and then adjust the support arc surface according to the curvature of the arc-shaped part structure, so that the arc surface of the arc-shaped part structure is contacted and supported. Example

[0027] As attached Figure 6 To Attachment Figure 7 As shown: The positioning rod 1 is provided with a transmission rod t1, a sliding plate t2, a spring rod t3, a track plate t4, and a fixed rod t5. The sliding plate t2 is embedded in the side of the transmission rod t1, the upper end of the spring rod t3 is installed on the lower side of the transmission rod t1, the sliding plate t2 is slidably matched in the track plate t4, the track plate t4 is vertically installed on the inner side of the fixed rod t5, the lower end of the spring rod t3 is embedded in the bottom of the track plate t4, the lower end of the fixed rod t5 is embedded in the upper end of the maintenance platform 4, the right end of the transmission rod t1 is embedded in the outer side of the sleeve 3, the transmission rod t1 is in a horizontal state, the track plate t4 is provided with two, distributed on the left and right sides of the sliding plate t2, the fixed rod t5 The sleeve 3 is in a vertical state, so when the sleeve 3 is driven by the electric drill to move downward, the transmission rod t1 supports the sleeve 3, so that the spring rod t3 is compressed by the downward pressing force of the transmission rod t1, and then the sliding plate t2 on the side of the transmission rod t1 slides vertically in the track plate t4, and the transmission rod t1 elastically supports the force exerted on the sleeve 3 under the compressive elastic force of the spring rod t3, so that the sleeve 3 is in close and stable contact with the electric drill, avoiding the transmission rod t1 from being tilted by the downward drilling force of the sleeve 3, and after the drilling is completed, the elastic force of the spring rod t3 drives the sleeve 3 at the outer end of the transmission rod t1 to follow the electric drill to contact and squeeze upward, so that the drill bit remains in the same position when the electric drill drills reciprocatingly, avoiding instability.

[0028] Among them, the sliding plate t2 is provided with an opening plate t21, a limiting rod t22, a bearing plate t23, and a triangular block t24. The triangular block t24 is embedded on the outside of the triangular block t24, and the triangular block t24 is installed on the side of the bearing plate t23. The limiting rod t22 is embedded on the left and right sides of the bearing plate t23. The limiting rod t22 slides in the track plate t4, and the bearing plate t23 is embedded on the side of the transmission rod t1. The triangular block t24 is made of rubber material and has the characteristics of high elasticity and easy deformation. The limiting rod t22 is provided with four, which are evenly and symmetrically distributed on the left and right sides of the bearing plate t23. The plate t21 is made of aluminum alloy and has the characteristics of smooth surface and easy sliding. There are two opening plates t21, which are symmetrically distributed up and down with the load-bearing plate t23 as the center, so that the load-bearing plate t23 is horizontally lifted and lowered through the vertical sliding of the left and right sets of limit rods t22 and the track plate t4, and then the opening plate t21 squeezes and slides on the inner wall of the fixed rod t5 under the elastic compression of the triangular block t24, so that the opening plate t21 in the open state supports and squeezes the load-bearing plate t23, and the sliding plate t2 and the spring rod t3 generate a stable supporting force on the side and bottom of the transmission rod t1, thereby preventing the downward drilling force of the sleeve 3 from being unstable and deviating. The specific usage and function of this embodiment are as follows: In the present invention, when the sleeve 3 is driven by the electric drill to move downward, the load-bearing plate t23 is horizontally lifted and lowered through the vertical sliding of the left and right groups of limit rods t22 and the track plate t4, and then the opening plate t21 squeezes and slides the inner wall of the fixed rod t5 under the elastic compression of the triangular block t24, so that the opening plate t21 in the open state supports and squeezes the load-bearing plate t23, and under the compressive elastic force of the spring rod t3, the transmission rod t1 elastically supports the force exerted on the sleeve 3, so that the sleeve 3 is in close and stable contact with the electric drill, and the transmission rod t1 is prevented from tilting due to the downward drilling force of the sleeve 3. After the drilling is completed, the elastic force of the spring rod t3 drives the sleeve 3 at the outer end of the transmission rod t1 to follow the electric drill to contact and squeeze upward, and then the sliding plate t2 and the spring rod t3 generate a stable supporting force on the side and bottom of the transmission rod t1, so that the drill bit remains in the same position when the electric drill drills reciprocatingly, and the downward drilling force of the sleeve 3 is prevented from being unstable and deviating, thereby avoiding instability. Utilizing the technical solution of the present invention, or those skilled in the art designing similar technical solutions inspired by the technical solution of the present invention to achieve the above-mentioned technical effects, all fall within the protection scope of the present invention.

Claims

1. A drill bit positioning sleeve for aircraft structure repair, the structure of which comprises a positioning rod (1), a supporting mechanism (2), a sleeve (3), a maintenance platform (4), and a movable plate (5), characterized in that: The sleeve (3) is embedded in the side of the positioning rod (1), the sleeve (3) is located directly above the support mechanism (2), the positioning rod (1) is embedded in the upper end of the maintenance platform (4), the support mechanism (2) is installed at the upper end inside the maintenance platform (4), the movable plate (5) is embedded in the outer side of the lower end of the support mechanism (2), and the movable plate (5) is fitted with internal clearances on the left and right sides of the maintenance platform (4); The support mechanism (2) is provided with a rubber plate (21), a locking mechanism (22), a support plate (23), and a curved panel (24); the upper end of the support plate (23) is embedded in the inner side of the curved panel (24); the outer side of the lower end of the support plate (23) is locked in the rubber plate (21); the support plate (23) passes through the rubber plate (21) and is hinged with the inside of the maintenance platform (4); the lower surface of the curved panel (24) is embedded in the upper end of the locking mechanism (22); the locking mechanism (22) is installed in the maintenance platform (4); and the rubber plate (21) is installed at the middle upper end of the maintenance platform (4).

2. A drill bit positioning sleeve for aircraft structure repair according to claim 1, characterized in that: The locking mechanism (22) is provided with a trapezoidal block (w1), a blocking plate (w2), a round bar (w3), a spring (w4), a connecting plate (w5), and a blocking block (w6); the spring (w4) is embedded in the lower end of the blocking plate (w2); the round bar (w3) is slidably engaged with the upper end of the blocking plate (w2); the round bar (w3) is locked in the lower end of the connecting plate (w5); the trapezoidal block (w1) is attached to the upper end of the connecting plate (w5); the blocking plate (w2) is movably engaged on the side of the blocking block (w6); the lower end of the spring (w4) is embedded in the upper end of the maintenance platform (4); the blocking block (w6) is installed on the inner side of the maintenance platform (4); and the upper end of the trapezoidal block (w1) is embedded in the lower surface of the arc panel (24).

3. A drill bit positioning sleeve for aircraft structure repair according to claim 2, characterized in that: The blocking plate (w2) is provided with a force block (w21), an arc groove (w22), a support plate (w23), and a horizontal plate (w24); the force block (w21) is embedded in the outer side of the horizontal plate (w24); the arc groove (w22) is located on the upper surface of the support plate (w23); the spring (w4) is embedded in the lower end of the horizontal plate (w24); the round bar (w3) is slidably engaged with the arc groove (w22); and the force block (w21) is movably engaged with the side of the blocking block (w6).

4. A drill bit positioning sleeve for aircraft structure repair according to claim 3, characterized in that: The force-bearing block (w21) is provided with a fixed block (q1), a compression plate (q2), and a ball (q3); the ball (q3) is movably engaged with the outside of the fixed block (q1); the compression plate (q2) is attached to the upper surface of the fixed block (q1); and the fixed block (q1) is embedded on the left and right sides of the horizontal plate (w24).

5. A drill bit positioning sleeve for aircraft structure repair according to claim 1, characterized in that: The positioning rod (1) is provided with a transmission rod (t1), a sliding plate (t2), a spring rod (t3), a track plate (t4), and a fixed rod (t5); the sliding plate (t2) is embedded in the side of the transmission rod (t1); the upper end of the spring rod (t3) is mounted on the lower side of the transmission rod (t1); the sliding plate (t2) is slidably matched in the track plate (t4); the track plate (t4) is vertically mounted on the inner side of the fixed rod (t5); the lower end of the spring rod (t3) is embedded in the bottom of the track plate (t4); the lower end of the fixed rod (t5) is embedded in the upper end of the maintenance platform (4); and the right end of the transmission rod (t1) is embedded in the outer side of the sleeve (3).

6. A drill bit positioning sleeve for aircraft structure repair according to claim 5, characterized in that: The sliding plate (t2) is provided with an opening plate (t21), a limiting rod (t22), a bearing plate (t23), and a triangular block (t24); the triangular block (t24) is embedded on the outside of the triangular block (t24); the triangular block (t24) is installed on the side of the bearing plate (t23); the limiting rod (t22) is embedded on the left and right sides of the bearing plate (t23); the limiting rod (t22) is slidably matched in the track plate (t4); and the bearing plate (t23) is embedded on the side of the transmission rod (t1).

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