Aircraft riveting piece press-fitting jig with pressure feedback

Abstract

This utility model discloses a pressure feedback press-fit fixture for aerospace riveting parts, including a mounting rod, a first telescopic rod slidably mounted inside the mounting rod, a second telescopic rod slidably mounted inside the first telescopic rod, a mounting seat fixedly mounted at the end of the second telescopic rod away from the mounting rod, a positioning seat below the mounting seat, and three sets of annularly distributed guide rails inside the positioning seat. Guide frames are slidably mounted within each of the three sets of guide rails, and pressure sensors are fixedly mounted on the guide frames. A guide disc is rotatably mounted inside the positioning seat, and a mounting column is rotatably mounted inside the mounting seat. Through the cooperation of the three sets of annularly distributed guide rails and pressure sensors, the pressure distribution at each contact point of the riveting part is monitored in real time. Combined with the linkage of a cylinder-driven rack and pinion mechanism and guide disc, the position of the guide frames is automatically adjusted to ensure balanced force on irregularly shaped workpieces and effectively avoid micro-displacement during the press-fit process.

Description

Technical Field

[0001] This utility model relates to the field of press-fitting fixture technology, specifically a press-fitting fixture for aerospace riveting parts with pressure feedback. Background Technology

[0002] Fixtures are a broad category of tools used in woodworking, metalworking, fitter work, machinery, electrical control, and other handicrafts. They are primarily used to assist in controlling position or movement. Fixtures can be divided into three categories: process assembly fixtures, project testing fixtures, and circuit board testing fixtures.

[0003] Currently, most press-fit fixtures for aerospace riveting parts adopt rigid clamping structures with a single positioning method, which is difficult to adapt to the angle adjustment requirements of different specifications of riveting parts. For irregular workpieces, the workpiece is subjected to unbalanced force during press-fitting, and micro-displacement occurs during the press-fitting process, causing the rivet hole position to be misaligned, increasing the rework rate. At the same time, traditional fixtures usually rely on manual adjustment of the fixture angle, which is not only inefficient, but also prone to riveting position deviation due to operational errors, affecting assembly accuracy. To address these issues, we propose an aerospace riveting part press-fit fixture with pressure feedback to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a pressure feedback fitting fixture for aerospace riveting parts, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure feedback aerospace riveting component press-fitting fixture, comprising a base rod, a first telescopic rod slidably mounted inside the base rod, a second telescopic rod slidably mounted inside the first telescopic rod, a mounting seat fixedly mounted at the end of the second telescopic rod away from the mounting rod, a positioning seat provided below the mounting seat, three sets of annularly distributed guide rails provided inside the positioning seat, guide frames slidably mounted inside each of the three sets of guide rails, a pressure sensor fixedly mounted on the guide frames, a guide disc rotatably mounted inside the positioning seat, and a mounting column rotatably mounted inside the mounting seat, the positioning seat being rotatably connected to the mounting column via a rotating rod, and a mounting rod rotatably mounted inside the mounting column, the mounting rod being perpendicular to the rotating rod.

[0006] As a further preferred embodiment of this technical solution, a toothed ring is sleeved on the guide plate, a rack is slidably installed in the positioning seat, the rack is meshed with the toothed ring, a cylinder is fixedly installed in the positioning seat, and the rack is fixedly connected to the output end of the cylinder piston rod.

[0007] As a further preferred embodiment of this technical solution, the guide plate is provided with three sets of annularly distributed guide grooves, and guide rods are fixedly installed on each of the three sets of guide frames. The guide rods are arranged correspondingly to the guide grooves, and the guide rods are slidably connected to the guide plate through the corresponding guide grooves.

[0008] As a further preferred embodiment of this technical solution, a first worm gear is sleeved on the mounting column, and a first worm is rotatably mounted inside the mounting base, the first worm meshing with the first worm gear.

[0009] As a further preferred embodiment of this technical solution, a first bevel gear is sleeved on the lower end of the mounting rod, a second bevel gear is sleeved on the rotating rod, the second bevel gear meshes with the first bevel gear, a second worm gear is sleeved on the mounting rod, and a second worm is rotatably installed inside the mounting column, the second worm meshing with the second worm gear.

[0010] As a further preferred embodiment of this technical solution, a threaded rod is rotatably installed inside the base rod, the lower end of the threaded rod passes through the first telescopic rod and is threadedly connected to the first telescopic rod, and a threaded tube is rotatably installed inside the first telescopic rod, the lower end of the threaded tube passes through the second telescopic rod and is threadedly connected to the second telescopic rod.

[0011] As a further preferred embodiment of this technical solution, the threaded rod is provided with two sets of symmetrically distributed sliding grooves, and the threaded tube is provided with two sets of symmetrically distributed sliders. The sliders are arranged correspondingly to the sliding grooves, and the threaded tube is slidably connected to the threaded rod through the sliders.

[0012] This utility model provides a pressure feedback fitting fixture for aerospace riveting parts, which has the following advantages:

[0013] This invention uses three sets of ring-shaped guide rails in conjunction with pressure sensors to monitor the pressure distribution at each contact point of the riveted parts in real time. Combined with the linkage of the cylinder-driven rack and pinion mechanism and guide plate, the position of the guide frame is automatically adjusted to ensure that the irregular workpiece is subjected to balanced force, effectively avoid micro-displacement during the pressing process, significantly improve the alignment accuracy of the rivet holes, and reduce the rework rate.

[0014] This utility model adopts a dual transmission structure of first worm gear and first worm and second worm gear and second worm, which respectively control the rotation of the mounting column and the pitch angle of the mounting rod. Combined with the threaded drive design of the telescopic rod, it realizes the rapid adjustment of the workpiece in multiple angles in the horizontal and vertical directions without manual intervention. This not only improves the adaptability of complex riveting scenarios, but also greatly improves assembly efficiency and operational accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the mounting rod of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the mounting base of this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the positioning seat and guide frame of this utility model.

[0019] In the diagram: 1. Base rod; 2. First telescopic rod; 3. Second telescopic rod; 4. Mounting seat; 5. Positioning seat; 6. Threaded rod; 7. Slide groove; 8. Threaded pipe; 9. Slider; 10. Mounting column; 11. First worm gear; 12. First worm; 13. Mounting rod; 14. Second worm gear; 15. Second worm; 16. Rotating rod; 17. Second bevel gear; 18. Guide rail; 19. Guide disc; 20. Gear ring; 21. Rack; 22. Cylinder; 23. Guide groove; 24. Guide frame; 25. Guide rod; 26. Pressure sensor; 27. First bevel gear. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] This utility model provides a technical solution: such as Figures 1-4As shown in this embodiment, a pressure feedback aerospace riveting component press-fitting fixture includes a base rod 1. A first telescopic rod 2 is slidably installed inside the base rod 1. A second telescopic rod 3 is slidably installed inside the first telescopic rod 2. A mounting base 4 is fixedly installed at the end of the second telescopic rod 3 away from the mounting rod 13. A positioning seat 5 is provided below the mounting base 4. The positioning seat 5 has three sets of annularly distributed guide rails 18. A guide frame 24 is slidably installed in each of the three sets of guide rails 18. A pressure sensor 26 is fixedly installed on the guide frame 24. A guide disk 19 is rotatably installed inside the positioning seat 5. A mounting column 10 is rotatably installed inside the mounting base 4. The positioning seat 5 is rotatably connected to the mounting column 10 through a rotating rod 16. An installation rod 13 is mounted on the guide plate 19, which is perpendicular to the rotating rod 16. A toothed ring 20 is sleeved on the guide plate 19. A rack 21 is slidably mounted in the positioning seat 5, and the rack 21 is meshed with the toothed ring 20. A cylinder 22 is fixedly mounted in the positioning seat 5, and the rack 21 is fixedly connected to the output end of the piston rod of the cylinder 22. Three sets of annularly distributed guide grooves 23 are opened on the guide plate 19. Guide rods 25 are fixedly mounted on each of the three sets of guide frames 24. The guide rods 25 are correspondingly arranged with the guide grooves 23. The guide rods 25 are slidably connected to the guide plate 19 through the corresponding guide grooves 23. During the pressing process, the workpiece contacts the pressure sensors 26 on the three sets of guide frames 24 and provides real-time feedback of pressure distribution data. If the pressure is uneven, the cylinder 22 pushes the rack 21 to drive the gear ring 20 to rotate, which in turn drives the guide plate 19 to rotate. Through the cooperation of the guide groove 23 and the guide rod 25, the radial positions of the three sets of guide frames 24 are adjusted synchronously to make the workpiece bear force evenly, avoid deviation, and ensure that the rivet holes are accurately aligned.

[0022] like Figure 3As shown, a first worm gear 11 is sleeved on the mounting post 10, a first worm 12 is rotatably mounted inside the mounting base 4, and the first worm 12 meshes with the first worm gear 11. A first bevel gear 27 is sleeved on the lower end of the mounting rod 13, a second bevel gear 17 is sleeved on the rotating rod 16, and the second bevel gear 17 meshes with the first bevel gear 27. A second worm gear 14 is sleeved on the mounting rod 13, a second worm 15 is rotatably mounted inside the mounting post 10, and the second worm 15 meshes with the second worm gear 14. A threaded rod 6 is rotatably mounted inside the bottom rod 1, the lower end of the threaded rod 6 passes through the first telescopic rod 2 and is threadedly connected to the first telescopic rod 2. A threaded tube 8 is rotatably mounted inside the first telescopic rod 2, the lower end of the threaded tube 8 passes through the second telescopic rod 3 and is threadedly connected to the second telescopic rod 3. The threaded connection includes two sets of symmetrically distributed grooves 7 on the threaded rod 6 and two sets of symmetrically distributed sliders 9 inside the threaded tube 8. The sliders 9 are correspondingly arranged with the grooves 7. The threaded tube 8 is slidably sleeved with the threaded rod 6 through the sliders 9. The first worm gear 12 drives the first worm wheel 11 to control the horizontal rotation of the mounting column 10 and adjust the circumferential angle of the workpiece. At the same time, the second worm gear 15 drives the second worm wheel 14 to make the mounting rod 13 pitch and swing. In conjunction with the rotation of the threaded rod 6 in the mounting rod 13, the first telescopic rod 2 is driven to slide. With the cooperation of the sliders 9 and the grooves 7, the threaded tube 8 rotates synchronously with the threaded rod 6, thereby allowing the second telescopic rod 3 to slide in the first telescopic rod 2. This achieves precise adjustment of the vertical height and tilt angle of the workpiece fixed on the positioning seat 5, meeting the multi-degree-of-freedom positioning requirements of complex riveted parts.

[0023] This utility model provides a pressure feedback press-fit fixture for aerospace riveting parts. The specific working principle is as follows: During the press-fitting process, the workpiece contacts the pressure sensors 26 on three sets of guide frames 24, providing real-time feedback on pressure distribution data. If the pressure is uneven, the cylinder 22 pushes the rack 21 to rotate the gear ring 20, driving the guide disc 19 to rotate. Through the cooperation of the guide groove 23 and the guide rod 25, the radial position of the three sets of guide frames 24 is adjusted synchronously, ensuring uniform force on the workpiece, preventing displacement, and ensuring precise alignment of the rivet holes. The first worm gear 12 drives the first worm wheel 11, controlling the horizontal rotation of the mounting column 10 to adjust the circumferential angle of the workpiece. Simultaneously, the second worm gear 15 drives the second worm wheel 14, causing the mounting rod 13 to pitch and swing. This, combined with the rotation of the threaded rod 6 in the mounting rod 13, drives the first telescopic rod 2 to slide. The slider 9 and the sliding groove 7 cause the threaded tube 8 to rotate synchronously with the threaded rod 6, thereby causing the second telescopic rod 3 to slide within the first telescopic rod 2. This achieves precise adjustment of the vertical height and tilt angle of the workpiece fixed on the positioning seat 5, meeting the multi-degree-of-freedom positioning requirements of complex riveting parts.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure-feeding fixture for aerospace riveting parts with pressure feedback, characterized in that: The device includes a base rod (1), a first telescopic rod (2) which is slidably installed inside the base rod (1), a second telescopic rod (3) which is slidably installed inside the first telescopic rod (2), a mounting seat (4) which is fixedly installed at the end of the second telescopic rod (3) away from the mounting rod (13), a positioning seat (5) which is provided below the mounting seat (4), and three sets of circularly distributed guide rails (18) which are provided inside the positioning seat (5). A guide frame (24) is slidably installed inside each of the three sets of guide rails (18), and a pressure sensor (26) is fixedly installed on the guide frame (24). A guide disc (19) is rotatably installed inside the positioning seat (5), and a mounting column (10) is rotatably installed inside the mounting seat (4). The positioning seat (5) is rotatably connected to the mounting column (10) through a rotating rod (16). A mounting rod (13) is rotatably installed inside the mounting column (10), and the mounting rod (13) and the rotating rod (16) are perpendicularly distributed.

2. The aircraft riveting component press-fitting fixture with pressure feedback according to claim 1, characterized in that: A toothed ring (20) is sleeved on the guide plate (19), and a rack (21) is slidably installed in the positioning seat (5). The rack (21) is meshed with the toothed ring (20). A cylinder (22) is fixedly installed in the positioning seat (5), and the rack (21) is fixedly connected to the output end of the piston rod of the cylinder (22).

3. The aircraft riveting component press-fitting fixture with pressure feedback according to claim 1, characterized in that: The guide plate (19) has three sets of annularly distributed guide grooves (23), and guide rods (25) are fixedly installed on the three sets of guide frames (24). The guide rods (25) are correspondingly arranged with the guide grooves (23), and the guide rods (25) are slidably connected to the guide plate (19) through the corresponding guide grooves (23).

4. The aircraft riveting component press-fitting fixture with pressure feedback according to claim 1, characterized in that: A first worm gear (11) is sleeved on the mounting post (10), and a first worm (12) is rotatably installed inside the mounting base (4). The first worm (12) is meshed with the first worm gear (11).

5. The pressure feedback fitting fixture for aerospace riveting parts according to claim 1, characterized in that: The lower end of the mounting rod (13) is fitted with a first bevel gear (27), and the rotating rod (16) is fitted with a second bevel gear (17). The second bevel gear (17) meshes with the first bevel gear (27). The mounting rod (13) is fitted with a second worm gear (14). The mounting column (10) is rotatably mounted with a second worm (15). The second worm (15) meshes with the second worm gear (14).

6. The aircraft riveting component press-fitting fixture with pressure feedback according to claim 1, characterized in that: A threaded rod (6) is rotatably installed inside the bottom rod (1). The lower end of the threaded rod (6) passes through the first telescopic rod (2) and is threadedly connected to the first telescopic rod (2). A threaded tube (8) is rotatably installed inside the first telescopic rod (2). The lower end of the threaded tube (8) passes through the second telescopic rod (3) and is threadedly connected to the second telescopic rod (3).

7. The aircraft riveting component press-fitting fixture with pressure feedback according to claim 6, characterized in that: The threaded rod (6) has two sets of symmetrically distributed sliding grooves (7), and the threaded tube (8) has two sets of symmetrically distributed sliders (9). The sliders (9) are correspondingly arranged with the sliding grooves (7), and the threaded tube (8) is slidably connected to the threaded rod (6) through the sliders (9).

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