Aircraft landing gear machining tool

Abstract

The utility model discloses an aircraft landing gear machining tool, and relates to the technical field of positioning tools, the aircraft landing gear machining tool comprises a tool base, a limiting supporting plate is fixedly arranged on the upper surface of the tool base, an adjusting mechanism is arranged on the surface of the limiting supporting plate, and a positioning assembly is arranged on the surface of the adjusting mechanism; the positioning assembly comprises two positioning discs, positioning cylinders are rotationally arranged on the opposite faces of the two positioning discs, and positioning lead screws are rotationally connected to the inner walls of the positioning cylinders. By arranging the positioning assembly, when the outer cylinder of the aircraft landing gear is positioned and machined, the positioning cylinders can extend into the two ends of the outer cylinder, the positioning motors are used for driving the two extension plates to expand outwards, and therefore the limiting ejector blocks at the ends of the extension plates abut against and support the inner wall of the outer cylinder; and therefore, the interior of the outer cylinder is clamped and fixed, the surface of the outer cylinder cannot be shielded, and then workers can conveniently machine all parts of the surface of the outer cylinder.

Description

Technical Field

[0001] This utility model relates to the field of positioning tooling technology, and in particular to a tooling for processing aircraft landing gear. Background Technology

[0002] Landing gear is an accessory device on the lower part of an aircraft used to support the aircraft during takeoff, landing, or taxiing and for ground movement. After takeoff, the landing gear can be retracted depending on flight performance. Aircraft landing gear mainly consists of the outer cylinder structure and landing gear wheels. When performing surface treatment on the outer cylinder structure, positioning fixtures are needed to limit and secure it.

[0003] The patent document with publication number CN219633714U discloses a clamping fixture for machining the outer cylinder of an aircraft landing gear strut, including an aluminum plate worktable and a workpiece body, as well as two first fixing blocks and two second fixing blocks. This utility model can quickly fix the workpiece body by setting up a support mechanism, first fixing blocks and second fixing blocks, and can further support and fix the workpiece body by rotating the support screw on the first threaded groove.

[0004] The clamping fixture for outer cylinder machining proposed in the above patent documents has several drawbacks in practical use. First, the positioning operation of the outer cylinder structure is cumbersome, requiring the use of screws to install and position the fixing blocks, which is inconvenient. Furthermore, using the fixing blocks to position the outer cylinder obstructs a portion of its surface, affecting machining operations. Therefore, improvements are needed to address these issues with the landing gear positioning fixture. Utility Model Content

[0005] This utility model discloses a machining fixture for aircraft landing gear. To achieve the above objectives, this utility model adopts the following technical solution:

[0006] A tooling for machining aircraft landing gear includes a tooling base, a limit support plate fixedly disposed on the upper surface of the tooling base, an adjustment mechanism disposed on the surface of the limit support plate, and a positioning component disposed on the surface of the adjustment mechanism.

[0007] The positioning assembly includes two positioning discs, and a positioning cylinder is rotatably mounted on the opposite surface of each of the two positioning discs. A positioning screw is rotatably connected to the inner wall of the positioning cylinder, and a movable block is threaded onto the surface of the positioning screw. Two strip-shaped limiting grooves are formed on the surface of the positioning cylinder, and an extension plate is rotatably connected to the inner wall of the strip-shaped limiting groove. Two limiting top blocks are rotatably mounted on the end of the extension plate away from the positioning cylinder.

[0008] In a preferred embodiment, a positioning motor is fixedly installed on the inner wall of the positioning cylinder, the output shaft of the positioning motor is fixedly connected to one end of the positioning lead screw, a baffle is fixedly connected to the end of the positioning cylinder, and the other end of the positioning lead screw away from the positioning motor is rotatably connected to the surface of the baffle.

[0009] In a preferred embodiment, movable support rods are rotatably connected to both the upper and lower surfaces of the movable block, and the end of the movable support rod away from the movable block is rotatably connected to the surface of the extension plate.

[0010] In a preferred embodiment, the limiting top block is made of rubber and is hemispherical in shape. A movable shaft is fixedly connected between the two limiting top blocks. The surface of the extension plate has a shaft hole that matches the movable shaft. The movable shaft is inserted into the inner wall of the shaft hole, and the limiting top block is rotatably connected to the surface of the extension plate through the movable shaft.

[0011] In a preferred embodiment, a transmission box is fixedly connected to the side of the positioning disk, a transmission motor is fixedly mounted on the surface of the transmission box, the output shaft of the transmission motor extends into the interior of the transmission box and is fixedly mounted with a transmission synchronous pulley, a driven shaft is fixedly mounted on the surface of the positioning cylinder, one end of the driven shaft extends into the interior of the transmission box and is fixedly mounted with a driven synchronous pulley, and a transmission belt is installed between the transmission synchronous pulley and the driven synchronous pulley.

[0012] In a preferred embodiment, the adjustment mechanism includes a strip guide box fixedly disposed on the back of the limiting support plate. An adjustment motor is fixedly installed at the left end of the strip guide box. A bidirectional lead screw is rotatably connected to the inner wall of the strip guide box. Two adjustment blocks are threadedly connected to the surface of the bidirectional lead screw. The front end of each adjustment block extends to the front of the limiting support plate and is fixed with a support arm.

[0013] In a preferred embodiment, the front end of the support arm is fixedly connected to the surface of the positioning disk, and a rectangular adjustment hole is provided on the surface of the limiting support plate. The position of the rectangular adjustment hole corresponds to the adjustment block, and the adjustment block is slidably connected to the inner wall of the rectangular adjustment hole.

[0014] As can be seen from the above, the aircraft landing gear machining fixture provided by this utility model has the following technical effects.

[0015] Firstly, by setting up a positioning component, when positioning and processing the outer cylinder of the aircraft landing gear, the positioning cylinder can be inserted into the two ends of the outer cylinder, and the positioning motor can drive the two extension plates to unfold outward. The limiting top block at the end of the extension plate can then press against and support the inner wall of the outer cylinder, thereby achieving clamping and fixing from the inside of the outer cylinder without obstructing the surface of the outer cylinder. This facilitates the processing of various parts of the outer cylinder surface by the workers.

[0016] Secondly, by setting an adjustment mechanism, the two positioning discs can be moved relative to each other by the adjustment motor, which makes it convenient to adjust and position the distance between the two positioning discs according to the different lengths of the landing gear outer cylinder, thus improving the applicability of the positioning fixture. By setting a transmission box, the positioning cylinder can be rotated by the transmission motor, thereby rotating and positioning the landing gear outer cylinder, which makes it convenient for workers to continuously process the surface of the outer cylinder. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of an aircraft landing gear machining fixture proposed in this utility model.

[0018] Figure 2 This is a side view of the structure of a machining fixture for aircraft landing gear proposed in this utility model.

[0019] Figure 3 This is a rear view structural schematic diagram of an aircraft landing gear machining fixture proposed in this utility model.

[0020] Figure 4 This is a side sectional view of the positioning cylinder structure of a machining tooling for aircraft landing gear proposed in this utility model.

[0021] Figure 5 This is a schematic diagram of the internal structure of the transmission box of an aircraft landing gear machining tooling proposed in this utility model.

[0022] In the attached diagram: 1. Tooling base; 2. Limiting support plate; 3. Adjustment mechanism; 4. Positioning assembly; 5. Transmission box; 6. Transmission motor; 7. Driven synchronous pulley; 8. Transmission synchronous pulley; 9. Transmission belt;

[0023] 301. Strip guide box; 302. Adjusting motor; 303. Two-way lead screw; 304. Adjusting block; 305. Support arm; 306. Rectangular adjusting hole;

[0024] 401. Positioning disc; 402. Positioning cylinder; 403. Positioning screw; 404. Movable block; 405. Strip-shaped limiting groove; 406. Extension plate; 407. Limiting top block; 408. Positioning motor; 409. Baffle; 410. Movable support rod; 411. Movable shaft. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference Figure 1 and Figure 2A tooling for processing aircraft landing gear includes a tooling base 1, a limit support plate 2 fixedly disposed on the upper surface of the tooling base 1, an adjustment mechanism 3 disposed on the surface of the limit support plate 2, and a positioning component 4 disposed on the surface of the adjustment mechanism 3.

[0027] The adjustment mechanism 3 includes a strip guide box 301 fixedly installed on the back of the limiting support plate 2. An adjustment motor 302 is fixedly installed on the left end of the strip guide box 301. A two-way lead screw 303 is rotatably connected to the inner wall of the strip guide box 301. Two adjustment blocks 304 are threadedly connected to the surface of the two-way lead screw 303. The front end of the adjustment block 304 extends to the front of the limiting support plate 2 and is fixed with a support arm 305.

[0028] It should be noted that the front end of the support arm 305 is fixedly connected to the surface of the positioning plate 401, and a rectangular adjustment hole 306 is provided on the surface of the limiting support plate 2. The position of the rectangular adjustment hole 306 corresponds to the adjustment block 304, and the adjustment block 304 is slidably connected to the inner wall of the rectangular adjustment hole 306.

[0029] It is worth noting that by setting the adjustment mechanism 3, when positioning the outer cylinder of the landing gear, the adjustment motor 302 first drives the bidirectional lead screw 303 to rotate, which in turn drives the two adjustment blocks 304 to move inside the strip guide box 301, and at the same time drives the two support arms 305 to move relative to each other. This facilitates the adjustment and positioning of the distance between the two positioning components 4 according to the transmission of the outer cylinder of the landing gear, so that the two outer cylinders are located between the two positioning components 4.

[0030] Reference Figure 3 and Figure 4 In a preferred embodiment, the positioning component 4 includes two positioning disks 401, and a positioning cylinder 402 is rotatably disposed on the opposite surface of each of the two positioning disks 401. A positioning screw 403 is rotatably connected to the inner wall of the positioning cylinder 402, and a movable block 404 is threadedly connected to the surface of the positioning screw 403. Two strip-shaped limiting grooves 405 are formed on the surface of the positioning cylinder 402, and an extension plate 406 is rotatably connected to the inner wall of the strip-shaped limiting grooves 405. Two limiting top blocks 407 are rotatably disposed at the end of the extension plate 406 away from the positioning cylinder 402.

[0031] It should be noted that the limiting top block 407 is made of rubber and is hemispherical. A movable shaft 411 is fixedly connected between the two limiting top blocks 407. The surface of the extension plate 406 is provided with a shaft hole that matches the movable shaft 411. The movable shaft 411 is inserted into the inner wall of the shaft hole, and the limiting top block 407 is rotatably connected to the surface of the extension plate 406 through the movable shaft 411.

[0032] It is worth noting that by setting a hemispherical limiting block 407, the limiting block 407 can fully contact and press against the inner wall of the outer tube of the landing gear, and the rubber material can play a certain role in anti-slip and cushioning, thereby improving the stability of the outer tube limiting.

[0033] Reference Figure 5 It should be further explained that a transmission box 5 is fixedly connected to the side of the positioning disc 401, a transmission motor 6 is fixedly installed on the surface of the transmission box 5, the output shaft of the transmission motor 6 extends into the interior of the transmission box 5 and is fixedly fitted with a transmission synchronous pulley 8, a driven shaft is fixedly fitted on the surface of the positioning cylinder 402, one end of the driven shaft extends into the interior of the transmission box 5 and is fixedly fitted with a driven synchronous pulley 7, and a transmission belt 9 is installed between the transmission synchronous pulley 8 and the driven synchronous pulley 7.

[0034] The drive motor 6 can drive the drive synchronous wheel 8 and the driven synchronous wheel 7 to rotate simultaneously, thereby driving the positioning cylinder 402 to rotate on the surface of the positioning disk 401.

[0035] It is worth noting that by setting the transmission box 5 on the surface of the positioning plate 401, the transmission motor 6 can drive the transmission synchronous wheel 8 and the driven synchronous wheel 7 to rotate, thereby driving the positioning cylinder 402 to rotate on the surface of the positioning plate 401, thus rotating and positioning the outer cylinder of the landing gear, which facilitates continuous processing of the outer cylinder surface by the staff.

[0036] It should be noted that movable support rods 410 are rotatably connected to both the upper and lower surfaces of the movable block 404, and the end of the movable support rod 410 away from the movable block 404 is rotatably connected to the surface of the extension plate 406.

[0037] In a preferred embodiment, a positioning motor 408 is fixedly installed on the inner wall of the positioning cylinder 402. The output shaft of the positioning motor 408 is fixedly connected to one end of the positioning screw 403. A baffle 409 is fixedly connected to the end of the positioning cylinder 402. The other end of the positioning screw 403 away from the positioning motor 408 is rotatably connected to the surface of the baffle 409. The positioning motor 408 can drive the positioning screw 403 to rotate, thereby adjusting the distance between the two limiting top blocks 407. This is suitable for limiting the outer cylinder of different sizes and specifications.

[0038] It is worth noting that by setting the positioning component 4, when positioning and processing the outer cylinder of the aircraft landing gear, the positioning cylinder 402 can be inserted into the two ends of the outer cylinder, and the positioning motor 408 can drive the two extension plates 406 to unfold outward. The limiting top block 407 at the end of the extension plate 406 can then press against and support the inner wall of the outer cylinder, thereby achieving clamping and fixing from the inside of the outer cylinder without obstructing the surface of the outer cylinder. This facilitates the processing of various parts of the outer cylinder surface by the workers.

[0039] Working principle: In use, the outer cylinder of the landing gear is first placed between the two positioning plates 401. Then, the adjusting motor 302 drives the two support arms 305 to move towards the middle, causing the two positioning cylinders 402 to extend into the interior of the outer cylinder. Then, the positioning motor 408 drives the positioning screw 403 to rotate, which in turn drives the movable block 404 to move laterally on the surface of the positioning screw 403. The movable block 404 then drives the two movable support rods 410 to rotate, which in turn drives the upper and lower extension plates 406 to unfold outward, thereby causing the limiting top block 407 to press against and limit the interior of the outer cylinder, achieving a clamping effect on the interior of the outer cylinder, making it convenient for workers to process the surface of the outer cylinder.

[0040] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. An aircraft landing gear machining tool comprising a tool base (1), characterised in that, The upper surface of the tool base (1) is fixedly provided with a limiting support plate (2), the surface of the limiting support plate (2) is provided with an adjusting mechanism (3), and the surface of the adjusting mechanism (3) is provided with a positioning assembly (4); The positioning assembly (4) comprises two positioning discs (401), the opposite surfaces of the two positioning discs (401) are rotationally provided with positioning barrels (402), the inner walls of the positioning barrels (402) are rotationally connected with positioning lead screws (403), the surface of the positioning lead screw (403) is threadedly connected with a movable block (404), the surface of the positioning barrel (402) is provided with two strip-shaped limiting grooves (405), the inner walls of the strip-shaped limiting grooves (405) are rotationally connected with extension plates (406), and the ends, away from the positioning barrel (402), of the extension plates (406) are rotationally provided with two limiting top blocks (407).

2. An aircraft landing gear machining tooling fixture according to claim 1, wherein, The inner wall of the positioning barrel (402) is fixedly provided with a positioning motor (408), one end of the positioning lead screw (403) is fixedly connected with the output shaft of the positioning motor (408), the end of the positioning barrel (402) is fixedly connected with a baffle (409), and the other end of the positioning lead screw (403), away from the positioning motor (408), is rotationally connected with the surface of the baffle (409).

3. An aircraft landing gear machining tooling fixture according to claim 1, wherein, The upper and lower surfaces of the movable block (404) are rotationally connected with movable support rods (410), and the ends, away from the movable block (404), of the movable support rods (410) are rotationally connected with the surface of the extension plate (406).

4. The aircraft landing gear machining tooling fixture of Claim 1, wherein, The limiting top blocks (407) are made of rubber and are semispherical, two limiting top blocks (407) are fixedly connected with an activity shaft (411), the surface of the extension plate (406) is provided with an axle hole matched with the activity shaft (411), the activity shaft (411) is inserted and mounted on the inner wall of the axle hole, and the limiting top blocks (407) are rotationally connected with the surface of the extension plate (406) through the activity shaft (411).

5. An aircraft landing gear machining tooling fixture according to claim 1, wherein, The side surface of the positioning disc (401) is fixedly connected with a transmission box (5), the surface of the transmission box (5) is fixedly mounted with a transmission motor (6), the output shaft of the transmission motor (6) extends into the inside of the transmission box (5), and a transmission synchronous wheel (8) is fixedly arranged, the surface of the positioning barrel (402) is fixedly provided with a driven shaft, one end of the driven shaft extends into the inside of the transmission box (5), and a driven synchronous wheel (7) is fixedly arranged, and the transmission synchronous wheel (8) and the driven synchronous wheel (7) are mounted with a transmission belt (9).

6. An aircraft landing gear machining tooling fixture according to claim 1, wherein, The adjusting mechanism (3) comprises a strip-shaped guide box (301) fixedly arranged on the back of the limiting support plate (2), the left end of the strip-shaped guide box (301) is fixedly mounted with an adjusting motor (302), the inner wall of the strip-shaped guide box (301) is rotationally connected with a bidirectional lead screw (303), the surface of the bidirectional lead screw (303) is threadedly connected with two adjusting blocks (304), and the front end of the adjusting block (304) extends to the front surface of the limiting support plate (2) and is fixedly provided with a support arm (305).

7. An aircraft landing gear machining tooling fixture according to claim 6, wherein, The front end of the support arm (305) is fixedly connected with the surface of the positioning disc (401), and the surface of the limiting support plate (2) is provided with a rectangular adjusting hole (306), the position of the rectangular adjusting hole (306) corresponds to the adjusting block (304), and the adjusting block (304) and the inner wall of the rectangular adjusting hole (306) are in sliding connection.

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