A three-degree-of-freedom multi-state floating support flattening fixture

Abstract

This invention discloses a three-degree-of-freedom multi-state floating support tilting fixture, comprising a tilting assembly, a base assembly, a working ladder, a push rod, and a hook assembly. The front end of the base assembly is equipped with the tilting assembly, and its rear end is connected to the push rod via a mounting bracket. A working ladder is located on one side of the front end of the base assembly, and a hook assembly is located around the periphery of the rear end of the base assembly. A second rotating support and a first rotating support are respectively located at the front end of the base assembly and the corresponding rear end of the tilting assembly, and the second and first rotating supports are fixedly connected. The tilting assembly is used to achieve three-degree-of-freedom adjustment of the product to adapt to different product states. This invention forms a novel multi-state floating support tilting fixture, which uses a motor drive for automated operation and can be modularly applied, exhibiting good practicality.

Description

Technical Field

[0001] This invention belongs to the technical field of shared flattening for large aircraft components, specifically relating to a flattening tooling for a three-degree-of-freedom multi-state floating support. Background Technology

[0002] In the process of aircraft wing assembly, traditional single-wing flattening tooling suffers from poor adaptability to rigid supports and low efficiency, making it difficult to meet the demands of modern aerospace manufacturing for high-precision and flexible assembly. Traditional flattening tooling requires individual design and lacks versatility; currently, fixed support structures cannot adapt to the adjustment needs of different aircraft models or wing configurations, requiring tooling redesign for each wing model change, resulting in long development cycles and high costs. Furthermore, due to external constraints such as the extra-large height, width, and length of large aircraft components, the dimensions of tooling designs are also often too large, leading to a waste of factory space resources in terms of storage and transport requirements. Summary of the Invention

[0003] The purpose of this invention is to provide a flattening fixture for a three-degree-of-freedom multi-state floating support, which aims to solve the above-mentioned problems.

[0004] This invention is mainly achieved through the following technical solutions: A three-degree-of-freedom multi-state floating support leveling fixture includes a flipping component, a base component, and a push rod. The front end of the base component is provided with the flipping component, and the rear end is connected to the push rod via a mounting bracket. The other end of the push rod is connected to the flipping component, and the push rod is used to push the flipping component to perform leveling operations. The front end of the base component and the rear end of the flipping component are respectively provided with a second rotating bracket and a first rotating bracket, which are connected. The flipping component is used to clamp the product and adjust the product in three degrees of freedom to adapt to different product states.

[0005] To better realize the present invention, the flipping assembly further includes a welded main frame, a rotating frame, a welded frame, shackle attachment points, and a bottom support assembly; The front side of the main welding frame is provided with several circular arc guide rails along the circumference. The front side of the main welding frame is connected to the rotating frame through the circular arc guide rails to realize the rotation of the rotating frame around the Z-axis. The front side of the rotating frame is connected to the welding frame through linear guide rails to realize the movement of the welding frame along the X-direction. The welding frame is provided with an electric support block that moves along the Z-direction. The rotating frame, welding frame and electric support block are used to cooperate to realize the three-degree-of-freedom adjustment of the product.

[0006] To better realize the present invention, the lower end of the welding main frame is detachably connected to a bottom support component. The welding frame and the bottom support component are respectively set at the support positions of the wing frame beam, and the welding frame and the bottom support component are provided with product support blocks corresponding to the wing frame beam. The periphery of the welding frame is provided with a number of shackle hanging points, and shackles are provided on the shackle hanging points.

[0007] To better realize the present invention, the circular arc guide rail further includes an arc-shaped slider and an arc-shaped rail, wherein clamps and stops are respectively provided at both ends of the arc-shaped rail, and a plurality of arc-shaped sliders are slidably arranged in the middle of the arc-shaped rail; the linear guide rail includes a linear slider and a linear guide rail, wherein clamps and stops are respectively provided at both ends of the linear guide rail, and a plurality of linear sliders are slidably arranged in the middle.

[0008] To better realize the present invention, the electric support block further includes a channel steel, a support block, a silicone pad, a mounting plate and an electric cylinder. The electric cylinder is connected to the welded frame through the mounting plate. The drive end of the electric cylinder is connected to the channel steel. The support block is provided on the right side of the channel steel, and a silicone pad is provided on the outer side of the support block.

[0009] To better realize the present invention, the base assembly further includes a base frame, a mounting support, and a limiting seat assembly. The front end of the base frame is provided with a flipping component through a second rotating support and a first rotating support, and the rear end of the base frame is connected to a push rod through a mounting support. Limiting seat assemblies are respectively provided on both sides of the top of the rear end of the base frame to physically prevent excessive tilting and to provide protection and limiting.

[0010] To better realize the present invention, the first rotating support is further composed of a mounting plate, an oil-impregnated bearing, a stepped screw, and a nut. Two parallel connecting seats are provided on one side of the mounting plate. One end of the stepped screw passes through the two connecting seats and is connected to the nut. The stepped screw is connected to the connecting seats through the oil-impregnated bearing. The second rotating support is composed of a perforated support and a mounting plate. A perforated support is provided on one side of the mounting plate. The perforated support is located between adjacent connecting seats to allow the stepped screw to pass through.

[0011] To better realize the present invention, the push rod further includes a speed reducer assembly, a commutator and a drive shaft. The input end and output end of the speed reducer assembly are respectively connected to the motor and the commutator through a coupling, and the output end of the commutator is connected to the drive shaft through a coupling. The drive shaft is used to transmit power to the push rod to realize the linear motion of the push rod.

[0012] To better realize the present invention, a hook assembly is further provided on the periphery of the rear end of the base assembly. The hook assembly is connected to the base assembly by screws and is used to suspend unused support block assemblies. The hook assembly includes a square steel and hooks, and a plurality of hooks are provided on the periphery of the square steel.

[0013] To better realize the present invention, a working ladder is further provided on one side of the front end of the base assembly. The working ladder includes a ladder frame, casters, legs, kickboards, industrial floor and guardrail. The ladder frame is provided with several legs on its periphery and several casters at its bottom. The ladder frame is provided with several step units composed of kickboards and industrial floor from top to bottom, and a guardrail is provided at the top of the ladder frame.

[0014] The beneficial effects of this invention are as follows: (1) This invention significantly improves the precision and efficiency of wing assembly through intelligent and modular design. It employs a three-degree-of-freedom (X / Z / Z-axis) electric servo drive control strategy. X-axis and Z-axis linear motion are driven by electric cylinders. The X-axis motor is mounted on a rotating frame, and the Z-axis linear motion is achieved by an electric support block (see above description). Combined with intelligent sensing and adaptive adjustment technology, high-precision and flexible support is achieved. Sensors include proximity switches and high-precision encoders to detect the electric cylinder's stroke. The encoder data enables adaptive adjustment of the electric cylinder. Compared to traditional dedicated tooling, this solution reduces tooling manufacturing costs by more than 50%. This invention solves the universal flattening requirements for large aircraft components, such as… Figure 11 As shown, it can achieve flattening of large aircraft components in various states, reducing the development cost of tooling, freeing up space, and conforming to the design concept of low cost and sustainable development.

[0015] (2) This invention solves the problem of inconvenient manual operation by using a motor drive, and achieves three-degree-of-freedom adjustment by designing a rotating frame and a welding frame. Combined with the multi-state floating support of the product support block, it can achieve leveling of different product states, adapting to various product states and thus realizing the reconfigurability of the leveling fixture. This invention forms a novel multi-state floating support leveling fixture, using a motor drive to achieve automated operation, and it can also be modularly applied, making it easy for other industries to learn from. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the inverted flat tooling for the three-degree-of-freedom multi-state floating support of the present invention. Figure 2 This is a schematic diagram of the flip component. Figure 3 This is a structural diagram of the base assembly; Figure 4This is a schematic diagram of the working ladder. Figure 5 This is a schematic diagram of the push rod structure; Figure 6 This is a structural diagram of the hook assembly; Figure 7 This is a schematic diagram of the structure of the second rotary support and the first rotary support; Figure 8 This is a schematic diagram of the circular arc guide rail structure; Figure 9 This is a schematic diagram of the linear guide rail structure; Figure 10 This is a schematic diagram of the electric support block. Figure 11 This is a schematic diagram of the leveling operation of the present invention.

[0017] The components are as follows: 1-Flipping assembly, 2-Base assembly, 3-Work ladder, 4-Push rod, 5-Hook assembly, 6-Welded main frame, 7-Swivel frame, 8-Welded frame, 9-Shackle attachment point, 10-Bottom support assembly, 11-Erection fastener, 12-First swivel support, 13-Base frame, 14-Second swivel support, 15-Mounting support, 16-Limiting seat assembly, 17-Ladder frame, 18-Fuma wheel, 19-Feet, 20-Kickboard, 21-Industrial floor. 22-Guardrail, 23-Reducer assembly, 24-Commutator, 25-Drive shaft, 26-Square steel, 27-Hook, 28-Mounting plate, 29-Mounting plate, 30-Oil-impregnated bearing, 31-Step screw, 32-Nut, 33-Borested support, 34-Arc slider, 35-Arc rail, 36-Clamping device, 37-Stop, 38-Linear slider, 39-Linear guide rail, 42-Channel steel, 43-Support block, 44-Silicone pad, 45-Mounting plate, 46-Electric cylinder. Detailed Implementation

[0018] Example 1: A three-degree-of-freedom multi-state floating support inverted flat tooling, such as Figures 1-6 As shown, it mainly consists of a flipping assembly 1, a base assembly 2, a working ladder 3, a push rod 4, and a hook assembly 5. The flipping assembly 1 is used to clamp the product, the base assembly 2 is used for tooling support of the flipping assembly 1, the working ladder 3 is used for personnel operation, the push rod 4 is used to tilt and push the flipping assembly 1, and the hook assembly 5 is used to suspend unused support blocks.

[0019] The flipping assembly 1 and the base assembly 2 are connected as a whole by a first rotating support 12 and a second rotating support 14. Specifically, as shown... Figure 7As shown, the first rotating support 12 consists of a mounting plate 28, an oil-impregnated bearing 30, a stepped screw 31, and a nut 32. Two parallel connecting seats are provided on one side of the mounting plate 28. One end of the stepped screw 31 passes through the two connecting seats and is connected to the nut 32. The stepped screw 31 is connected to the connecting seats through the oil-impregnated bearing 30. The second rotating support 14 consists of a perforated support 32 and a mounting plate 29. A perforated support 32 is provided on one side of the mounting plate 29. The perforated support 32 is located between adjacent connecting seats to allow the stepped screw 31 to pass through.

[0020] The first rotating support 12 and the second rotating support 14 are respectively positioned by pins and screwed to the flip assembly 1 and the base assembly 2. The first rotating support 12 and the second rotating support 14 of the flip assembly 1 and the base assembly 2 are connected into a whole by stepped screws and nuts.

[0021] The flipping assembly 1 and the push rod 4 are connected as a whole by the first rotating support 12. The first rotating support 12 is positioned by a pin and screwed to the flipping assembly 1. The first rotating support 12 of the flipping assembly 1 and the push rod 4 are connected as a whole by a stepped screw and a nut.

[0022] The base assembly 2 and the push rod 4 are connected as a whole by the mounting bracket 15. The mounting bracket 15 is connected to the base assembly 2 by pin positioning and screw screw connection. The mounting bracket 15 of the base assembly 2 and the push rod 4 are connected as a whole by stepped screws and nuts.

[0023] The base assembly 2 and the hook assembly 5 are screwed together to form a whole.

[0024] (1) The flipping assembly 1 consists of a welded main frame 6, a rotating frame 7, a welded frame 8, shackle hook points 9, a bottom support assembly 10, a fastener 11, and a first rotating support 12. Several arc guide rails are installed circumferentially on one side of the welded main frame 6. The connection with the rotating frame 7 is achieved by the cooperation of the slider and the guide rail. A limiting block assembly is installed at the end of the guide rail to achieve the function of limiting the sliding. A clamp is provided on the guide rail to ensure the fixation during the process. A linear guide rail is installed on the rotating frame 7. The connection with the welded frame 8 is achieved by the cooperation of the slider and the guide rail. A limiting block assembly is installed at the end of the guide rail to achieve the function of limiting the sliding. A clamp is provided on the guide rail to ensure the fixation during the process. The strap assembly consists of shackles and fasteners. The shackles are connected to the hook points of the welded frame 8. The bottom support assembly 10 is connected to the welded main frame 6 through a dovetail groove structure to achieve quick disassembly and detachment of the bottom support assembly.

[0025] like Figure 8As shown, the arc guide rail includes an arc-shaped slider 34 and an arc-shaped rail 35. Clamps 36 and stops 37 are respectively provided at both ends of the arc-shaped rail 35, and several arc-shaped sliders 34 are slidably arranged in the middle of the arc-shaped rail 35. Figure 9 As shown, the linear guide rail includes a linear slider 38 and a linear guide rail 39. The two ends of the linear guide rail 39 are respectively provided with a clamp 36 and a stop 37, and a plurality of linear sliders 38 are slidably arranged in the middle.

[0026] like Figure 10 As shown, the electric support block includes a channel steel 42, a support block 43, a silicone pad 44, a mounting plate 45, and an electric cylinder 46. The electric cylinder 46 is connected to the welding frame 8 through the mounting plate 45. The drive end of the electric cylinder 46 is connected to the channel steel 42. The support block 43 is provided on the right side of the channel steel 42, and the silicone pad 44 is provided on the outer side of the support block 43.

[0027] Specifically, the main welded frame 6 is made of square steel welded together and then precision machined; the rotating frame 7 is made of square steel welded together and then precision machined; the welded frame 8 is made of square steel welded together and then precision machined; the shackle hook point 9 and the welded frame 8 are welded together to form a whole; the dovetail groove of the bottom support component 10 is screwed together with the welded frame 8 to form a whole; the first rotating support 12 and the main welded frame 6 are positioned by pins and screwed together to form a whole; the two first rotating supports 12 must ensure coaxiality.

[0028] (2) The base assembly 2 consists of a base frame 13, a second rotating support 14, a mounting support 15 and a limiting seat assembly 16. The base frame 13 is welded from square steel. The second rotating support 14 is connected to the base frame 13 by pin positioning and screw connection to form a whole. The mounting support 15 is connected to the base frame 13 by pin positioning and screw connection to form a whole. The limiting seat assembly 16 is welded to the base frame 13 to form a whole.

[0029] Specifically, the base frame 13 is made of square steel welded together and then precision machined. The second rotating support 14 is connected to the base frame 13 as a whole by pin positioning and screw connection. The two rotating supports must be coaxial. The mounting support 15 is connected to the base frame 13 as a whole by pin positioning and screw connection. The two second rotating supports 14 must be coaxial.

[0030] (3) The working ladder 3 is composed of a ladder frame 17, a caster wheel 18, a support leg 19, a kick plate 20, an industrial floor 21 and a guardrail 22. The components are connected together as a whole by screws.

[0031] (4) The push rod 4 is composed of a reducer assembly 23, a commutator 24, and a drive shaft 25, and the components are connected by couplings. The reducer assembly 23 is used to convert the high speed and low torque output of the motor into a low speed and high torque output, providing a stable driving force. The input end is the motor and the coupling, and the output end is connected to the commutator 24 through the coupling. The commutator is used to change the direction of power transmission, for example, to change horizontal rotation to vertical rotation, to adapt to the needs of multi-degree-of-freedom adjustment. The input end is connected to the reducer assembly 23 through the coupling, and the output end is connected to the drive shaft 25 through the coupling. The drive shaft 25 transmits power to the push rod to achieve linear motion. Motor → Reducer assembly 23 speed reduction and torque increase → Commutator 24 adjusts direction → Drive shaft 25 rotates → Drive push rod linear motion.

[0032] (5) The hook assembly 5 is composed of square steel 26 and hook 27. The square steel and hook slide through the pin hole clearance fit. The pin hole clearance fit means that there is a certain gap between the pin (such as cylindrical pin, conical pin, etc.) and the hole, that is, the diameter of the hole is slightly larger than the diameter of the pin, so as to ensure that the hook can slide flexibly.

[0033] This invention obtains the outer dimensions of the rotating frame 7 (flipping frame) by analyzing the wing's external dimensions, designing the welding frame 8 and bottom support assembly 10 based on the support positions of the wing spar, and designing product support blocks on the welding frame 8 and bottom support assembly 10. Based on the safety clearance distance, the outer dimensions of the welding main frame 6 can be derived. The outer dimensions of the base assembly 2 can then be obtained from the outer dimensions of the welding main frame 6. Furthermore, rigidity calculations are performed on the base assembly 2 and the flipping assembly 1 to determine their specific dimensions and structure. The hook assembly 5 is designed based on the size and opening size of the bottom support assembly 10, and the push rod 4's thrust is calculated based on the overall weight of the flipping assembly 2 and the wing.

[0034] The welding frame 8 and the product support blocks on the bottom support assembly 10 are designed according to different wing configurations, thereby achieving reconfigurability. This invention solves the universal flattening requirement for large aircraft components, such as... Figure 11 As shown, it can achieve flattening of large aircraft components in various states, reducing the development cost of tooling, freeing up space, and conforming to the design concept of low cost and sustainable development.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A flattening fixture for a three-degree-of-freedom multi-state floating support, characterized in that, The device includes a flipping assembly (1), a base assembly (2), and a push rod (4). The front end of the base assembly (2) is provided with the flipping assembly (1), and the rear end is connected to the push rod (4) through a mounting bracket (15). The other end of the push rod (4) is connected to the flipping assembly (1). The push rod (4) is used to push the flipping assembly (1) to perform a flattening operation. The front end of the base assembly (2) and the rear end of the flipping assembly (1) are respectively provided with a second rotating support (14) and a first rotating support (12), and the second rotating support (14) and the first rotating support (12) are connected. The flipping assembly (1) is used to clamp the product and adjust the product in three degrees of freedom to adapt to different product states.

2. The flattening fixture for a three-degree-of-freedom multi-state floating support according to claim 1, characterized in that, The flipping assembly (1) includes a welded main frame (6), a rotating frame (7), a welded frame (8), a shackle attachment point (9), and a bottom support assembly (10). The front side of the welding main frame (6) is provided with several circular arc guide rails along the circumference. The front side of the welding main frame (6) is connected to the rotating frame (7) through the circular arc guide rails to realize the rotation of the rotating frame (7) around the Z axis. The front side of the rotating frame (7) is connected to the welding frame (8) through the linear guide rails to realize the movement of the welding frame (8) along the X direction. The welding frame (8) is provided with an electric support block that moves along the Z direction. The rotating frame (7), the welding frame (8) and the electric support block are used to cooperate to realize the three-degree-of-freedom adjustment of the product.

3. The flattening fixture for a three-degree-of-freedom multi-state floating support according to claim 2, characterized in that, The lower end of the welding main frame (6) is detachably connected to a bottom support component (10). The welding frame (8) and the bottom support component (10) are respectively set at the support positions of the wing frame beam, and the welding frame (8) and the bottom support component (10) are provided with product support blocks corresponding to the wing frame beam. Several shackle hanging points (9) are provided on the periphery of the welding frame (8), and shackles are provided on the shackle hanging points (9).

4. The flattening fixture for a three-degree-of-freedom multi-state floating support according to claim 2, characterized in that, The circular arc guide rail includes an arc slider (34) and an arc rail (35). The two ends of the arc rail (35) are respectively provided with clamps (36) and stops (37), and a number of arc sliders (34) are slidably arranged in the middle of the arc rail (35). The linear guide rail includes a linear slider (38) and a linear guide rail (39). The two ends of the linear guide rail (39) are respectively provided with clamps (36) and stops (37), and a number of linear sliders (38) are slidably arranged in the middle.

5. The flattening fixture for a three-degree-of-freedom multi-state floating support according to claim 2, characterized in that, The electric support block includes a channel steel (42), a support block (43), a silicone pad (44), a mounting plate (45), and an electric cylinder (46). The electric cylinder (46) is connected to the welding frame (8) through the mounting plate (45). The driving end of the electric cylinder (46) is connected to the channel steel (42). The support block (43) is provided on the right side of the channel steel (42), and the silicone pad (44) is provided on the outer side of the support block (43).

6. The flattening fixture for a three-degree-of-freedom multi-state floating support according to claim 1, characterized in that, The base assembly (2) includes a base frame (13), a mounting bracket (15), and a limiting seat assembly (16). The front end of the base frame (13) is connected to the first rotating bracket (12) via a second rotating bracket (14) and a flipping component (1). The rear end of the base frame (13) is connected to the push rod (4) via the mounting bracket (15). Limiting seat assemblies (16) are respectively provided on both sides of the top of the rear end of the base frame (13) to physically limit the tilting amplitude of the flipping component (1).

7. The flattening fixture for a three-degree-of-freedom multi-state floating support according to claim 6, characterized in that, The first rotating support (12) is composed of a mounting plate (28), an oil-impregnated bearing (30), a stepped screw (31), and a nut (32). Two parallel connecting seats are provided on one side of the mounting plate (28). One end of the stepped screw (31) passes through the two connecting seats and is connected to the nut (32). The stepped screw (31) is connected to the connecting seats through the oil-impregnated bearing (30). The second rotating support (14) is composed of a perforated support (32) and a mounting plate (29). A perforated support (32) is provided on one side of the mounting plate (29). The perforated support (32) is located between adjacent connecting seats so that the stepped screw (31) can pass through.

8. The flattening fixture for a three-degree-of-freedom multi-state floating support according to claim 1 or 6, characterized in that, The push rod (4) includes a speed reducer assembly (23), a commutator (24) and a drive shaft (25). The input end and output end of the speed reducer assembly (23) are connected to the motor and the commutator (24) respectively through a coupling, and the output end of the commutator (24) is connected to the drive shaft (25) through a coupling. The drive shaft (25) is used to transmit power to the push rod to realize the linear motion of the push rod.

9. The flattening fixture for a three-degree-of-freedom multi-state floating support according to claim 1, characterized in that, A hook assembly (5) is provided on the periphery of the rear end of the base assembly (2). The hook assembly (5) is connected to the base assembly (2) by screws. The hook assembly (5) is used to suspend unused support blocks. The hook assembly (5) includes a square steel (26) and hooks (27). Several hooks (27) are provided on the periphery of the square steel (26).

10. The flattening fixture for a three-degree-of-freedom multi-state floating support according to claim 1, characterized in that, A working ladder (3) is provided on one side of the front end of the base assembly (2). The working ladder (3) includes a ladder frame (17), casters (18), legs (19), kickboards (20), industrial floor (21), and guardrails (22). The ladder frame (17) is provided with several legs (19) around its perimeter and several casters (18) at its bottom. The ladder frame (17) is provided with several step units composed of kickboards (20) and industrial floor (21) from top to bottom. The ladder frame (17) is provided with guardrails (22) at its top.

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