A flexible positioning device for thin-walled frames

Abstract

The present invention belongs to the field of mechanical positioning devices, and specifically relates to a flexible positioning device for thin-walled frames. The technical solution of the present invention is as follows: a flexible positioning device for thin-walled frames, comprising a machine body, a mobile frame, an X-axis feeding mechanism, a Y-axis flexible positioning module and a Z-axis flexible positioning module, the machine body is provided with a slide rail, the mobile frame is installed together with the slide rail in sliding cooperation, and the X-axis feeding mechanism drives the mobile frame to move along the X-axis; the skin base is installed on the machine body; the Y-axis flexible positioning module and the Z-axis flexible positioning module are arranged on the mobile frame, and the Y-axis flexible positioning module and the Z-axis flexible positioning module implement Y-axis and Z-axis positioning for the triangular frame. The flexible positioning device for thin-walled frames provided by the present invention can solve the problem of the smoothness of the gap and step difference between the joint surfaces of the skin base and the triangular frame, and eliminate assembly stress.

Description

Technical Field

[0001] The invention belongs to the field of mechanical positioning devices, and in particular relates to a flexible positioning device for a thin-walled frame. Background Art

[0002] Aircraft skin bases are assembled with multiple triangular frames to form a thin-walled frame structure, requiring strict smoothness of the gaps and step differences between the joints. Currently, manual assembly requires specialized tooling, rigid jigs, and other tools. The assembly process relies on numerous 2D drawings and process documentation, using simulations such as mold lines, templates, and prototypes to control assembly coordination accuracy. This results in high workload and low efficiency, and relies heavily on the workers' experience to ensure quality, resulting in poor product precision and a short lifespan. Summary of the Invention

[0003] The present invention provides a flexible positioning device for a thin-walled frame, which can solve the problem of smoothness of the gap and step difference between the joint surfaces of a skin base and a triangular frame, and eliminate assembly stress.

[0004] The technical solutions of the present invention are as follows:

[0005] A flexible positioning device for a thin-walled frame includes a body, a mobile frame, an X-axis feeding mechanism, a Y-axis flexible positioning module, and a Z-axis flexible positioning module. The body is provided with a slide rail, and the mobile frame is installed together with the slide rail in a sliding manner. The X-axis feeding mechanism drives the mobile frame to move along the X-axis; a skin base is installed on the body; the Y-axis flexible positioning module and the Z-axis flexible positioning module are arranged on the mobile frame, and the Y-axis flexible positioning module and the Z-axis flexible positioning module implement positioning of the triangular frame in the Y-axis and Z-axis directions.

[0006] Furthermore, in the flexible positioning device of the thin-walled frame, the movable frame includes a slide and an upper frame, the upper frame is arranged on the slide, and the upper frame and the slide are respectively installed together in sliding cooperation with two different slide rails.

[0007] Furthermore, the flexible positioning device of the thin-walled frame, the Y-axis flexible positioning module includes a Y-axis servo electric cylinder 1, a connecting block 1, a core shaft 1, a tightening block 1, a toggle clamp 1, a Y-axis servo electric cylinder 2, a connecting block 2, a core shaft 2, a tightening block 2 and a toggle clamp 2, the Y-axis servo electric cylinder 1 and the Y-axis servo electric cylinder 2 are fixedly arranged side by side on the slide, the connecting block 1 is fixedly connected to the output end of the Y-axis servo electric cylinder 1, the tightening block 1 is rotatably connected to the connecting block 1 through the core shaft 1, and the two toggle clamps 1 are symmetrically arranged on both sides of the tightening block 1; the connecting block 2 is fixedly connected to the output end of the Y-axis servo electric cylinder 2, the tightening block 2 is rotatably connected to the connecting block 2 through the core shaft 2, and the two toggle clamps 2 are symmetrically arranged on both sides of the tightening block 2.

[0008] Furthermore, the flexible positioning device of the thin-walled frame, the Z-axis flexible positioning module includes a Z-axis servo electric cylinder, a connecting block three, an adapter table, a core shaft three, a splint, a clamping block, a pin shaft, a toggle clamp three and a load sensor, the Z-axis servo electric cylinder is fixedly arranged on the upper frame, the connecting block three is fixedly connected to the output end of the Z-axis servo electric cylinder, the adapter table is fixedly connected to the connecting block three, and the load sensor is arranged between the adapter table and the connecting block three; the core shaft three is installed on the adapter table, and the two splints are respectively placed on both sides of the adapter table and rotatably connected to the core shaft three, and the two ends of the core shaft three are respectively provided with end covers to clamp the splints; the front ends of the splint are respectively provided with grooves, the pin shaft is arranged at the grooves, and the clamping block is rotatably connected to the pin shaft; two toggle clamps three are provided on the outside of each splint.

[0009] Furthermore, in the flexible positioning device of the thin-walled frame, two limit screws are provided on the clamping plate for limiting the rotation range of the clamping plate.

[0010] Furthermore, in the flexible positioning device of the thin-walled frame, the upper frame is provided with a pneumatic slide 1 and a pneumatic slide 2, the pneumatic slide 1 is provided with a laser point scanner, and the pneumatic slide 2 is provided with a laser line scanner.

[0011] The beneficial effects of the present invention are as follows: the present invention has the characteristics of simple structure, easy installation, fast and stable adjustment, is suitable for adjusting the smoothness of the gap and step difference between the joint surface of the skin base and the triangular frame, shortens the adjustment time, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the front view of the flexible positioning device of the thin-walled frame;

[0013] Figure 2 It is the left view of the flexible positioning device of the thin-walled frame;

[0014] Figure 3 This is a schematic diagram of the Y-axis flexible positioning module;

[0015] Figure 4 This is a schematic diagram of the Z-axis flexible positioning module;

[0016] Figure 5 This is the main view of the Z-axis flexible positioning module;

[0017] Figure 6 This is the main view of the switchboard;

[0018] Figure 7 This is the main view of the splint.

[0019] In the figure: 1 is the skin base, 2 is the triangular frame, 3 is the body, 4 is the slide, 5 is the upper frame, 6 is the X-axis feeding mechanism, 7 is the Y-axis flexible positioning module, 8 is the Z-axis flexible positioning module, 9 is the laser line scanner, 10 is the laser point scanner, 11 is the Y-axis servo electric cylinder one, 12 is the Y-axis servo electric cylinder two, 13 is the connecting block one, 14 is the tightening block one, 15 is the elbow clamp one, 16 is the tightening block two, 17 is the elbow clamp two, 21 is the Z-axis servo electric cylinder, 22 is the connecting block three, 23 is the transfer table, 24 is the splint, 25 is the pressing block, 26 is the elbow clamp three, 27 is the load sensor, 28 is the limit screw, and 29 is the groove. DETAILED DESCRIPTION

[0020] like Figure 1-7 As shown, a flexible positioning device for a thin-walled frame includes a body 3, a mobile frame, an X-axis feeding mechanism 6, a Y-axis flexible positioning module 7 and a Z-axis flexible positioning module 8. The body 3 is provided with a slide rail, and the mobile frame is installed together with the slide rail in a sliding manner. The X-axis feeding mechanism 6 drives the mobile frame to move along the X-axis; the skin base 1 is installed on the body 3; the Y-axis flexible positioning module 7 and the Z-axis flexible positioning module 8 are arranged on the mobile frame, and the Y-axis flexible positioning module 7 and the Z-axis flexible positioning module 8 implement positioning of the triangle frame 2 in the Y-axis and Z-axis directions.

[0021] The movable frame includes a slide 4 and an upper frame 5. The upper frame 5 is arranged on the slide 4. The upper frame 5 and the slide 4 are respectively installed together in sliding cooperation with two different slide rails.

[0022] The Y-axis flexible positioning module 7 includes a Y-axis servo electric cylinder 11, a connecting block 13, a core shaft 1, a tightening block 14, a toggle clamp 15, a Y-axis servo electric cylinder 2 12, a connecting block 2, a core shaft 2, a tightening block 2 16 and a toggle clamp 2 17. The Y-axis servo electric cylinder 11 and the Y-axis servo electric cylinder 2 12 are fixed side by side on the slide 4. The connecting block 13 is fixedly connected to the output end of the Y-axis servo electric cylinder 11, the tightening block 14 is rotatably connected to the connecting block 13 through the core shaft 1, and the two toggle clamps 15 are symmetrically arranged on both sides of the tightening block 14; the connecting block 2 is fixedly connected to the output end of the Y-axis servo electric cylinder 2 12, the tightening block 2 16 is rotatably connected to the connecting block 2 through the core shaft 2, and the two toggle clamps 2 17 are symmetrically arranged on both sides of the tightening block 2 16.

[0023] The Z-axis flexible positioning module 8 includes a Z-axis servo electric cylinder 21, a connecting block 3 22, a transfer platform 23, a core shaft 3, a clamping plate 24, a pressing block 25, a pin shaft, a toggle clamp 3 26 and a load sensor 27. The Z-axis servo electric cylinder 21 is fixedly arranged on the upper frame 5, the connecting block 3 22 is fixedly connected to the output end of the Z-axis servo electric cylinder 21, the transfer platform 23 is fixedly connected to the connecting block 3 22, and the load sensor 27 is arranged between the transfer platform 23 and the connecting block 3 22; the core shaft 3 is installed in the On the transfer platform 23, two clamps 24 are respectively placed on both sides of the transfer platform 23 and are rotatably connected to the core shaft three. The two ends of the core shaft three are respectively provided with end covers to clamp the clamps 24; the front ends of the clamps 24 are respectively provided with grooves 29, the pins are arranged at the grooves 29, and the clamping blocks 25 are rotatably connected to the pins; two elbow clamps 26 are provided on the outside of each clamp 24; two limit screws 28 are provided on the clamps 24 to limit the rotation range of the clamps 24.

[0024] The upper frame is provided with a pneumatic slide 1 and a pneumatic slide 2. The pneumatic slide 1 is provided with a laser point scanner 10, and the pneumatic slide 2 is provided with a laser line scanner 9.

[0025] The working process is as follows: the X-axis feed mechanism 6 drives the movable frame to move and align with a triangular frame 2; the toggle clamp 1 15, the toggle clamp 2 17 and the toggle clamp 3 26 clamp the triangular frame 2, the laser line scanner 9 and the laser point scanner 10 work to determine the position data of the skin base and the triangular frame, and transmit the data to the PLC. The PLC uses the calculation software to judge the smoothness of the gap and step difference between the joint surfaces of the skin base and the triangular frame, and determines the adjustment tolerance range and the posture adjustment method; the PLC controls the Y-axis servo electric cylinder 1 11, the Y-axis servo electric cylinder 2 12 and the Z-axis servo electric cylinder 21 to implement the position adjustment of the triangular frame 2; the load sensor 27 measures the Z-direction clamping force and transmits it to the PLC. The PLC controls the strength of the Y-axis servo electric cylinder 1 11, the Y-axis servo electric cylinder 2 12 and the Z-axis servo electric cylinder 21 to prevent damage to the skin base 1.

Claims

1. A flexible positioning device for a thin-walled frame, characterized in that: It includes a machine body, a mobile frame, an X-axis feeding mechanism, a Y-axis flexible positioning module, and a Z-axis flexible positioning module. The machine body is provided with a slide rail, the mobile frame is slidably mounted on the slide rail, and the X-axis feeding mechanism drives the mobile frame to move along the X-axis; the skin base is mounted on the machine body; the Y-axis flexible positioning module and the Z-axis flexible positioning module are arranged on the mobile frame, and the Y-axis flexible positioning module and the Z-axis flexible positioning module implement positioning of the triangle frame in the Y-axis and Z-axis directions; The movable frame includes a slide and an upper frame, wherein the upper frame is arranged on the slide, and the upper frame and the slide are respectively slidably mounted together with two different slide rails; The Y-axis flexible positioning module includes a Y-axis servo electric cylinder 1, a connecting block 1, a core shaft 1, a tightening block 1, a toggle clamp 1, a Y-axis servo electric cylinder 2, a connecting block 2, a core shaft 2, a tightening block 2 and a toggle clamp 2. The Y-axis servo electric cylinder 1 and the Y-axis servo electric cylinder 2 are fixedly arranged side by side on the slide. The connecting block 1 is fixedly connected to the output end of the Y-axis servo electric cylinder 1, the tightening block 1 is rotatably connected to the connecting block 1 through the core shaft 1, and the two toggle clamps 1 are symmetrically arranged on both sides of the tightening block 1; the connecting block 2 is fixedly connected to the output end of the Y-axis servo electric cylinder 2, the tightening block 2 is rotatably connected to the connecting block 2 through the core shaft 2, and the two toggle clamps 2 are symmetrically arranged on both sides of the tightening block 2; The Z-axis flexible positioning module includes a Z-axis servo electric cylinder, a connecting block three, an adapter table, a core shaft three, a splint, a clamping block, a pin shaft, a toggle clamp three and a load sensor. The Z-axis servo electric cylinder is fixedly arranged on the upper frame, the connecting block three is fixedly connected to the output end of the Z-axis servo electric cylinder, the adapter table is fixedly connected to the connecting block three, and the load sensor is arranged between the adapter table and the connecting block three; the core shaft three is installed on the adapter table, and the two splints are respectively placed on both sides of the adapter table and are rotatably connected to the core shaft three, and the two ends of the core shaft three are respectively provided with end covers to clamp the splints; the front ends of the splint are respectively provided with grooves, the pin shaft is arranged at the grooves, and the clamping block is rotatably connected to the pin shaft; two toggle clamps three are provided on the outside of each splint.

2. The flexible positioning device for thin-walled frames according to claim 1, characterized in that: The clamping plate is provided with two limit screws for limiting the rotation range of the clamping plate.

3. The flexible positioning device for thin-walled frames according to claim 1, characterized in that: The upper frame is provided with a pneumatic slide 1 and a pneumatic slide 2. The pneumatic slide 1 is provided with a laser point scanner, and the pneumatic slide 2 is provided with a laser line scanner.

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