A grinding device for the closing of self-locking nuts in aerospace applications

Abstract

This utility model provides a grinding device for the closing of self-locking nuts in aerospace applications, belonging to the technical field of grinding devices. It includes a base, with a rotating shaft and a drive mechanism mounted on the top of the base. A top plate is fixedly mounted on the outer surface of the rotating shaft, and a placement plate is rotatably mounted via a limiting member. A clamping mechanism is located on the top of the placement plate. The clamping mechanism includes a first clamping plate and a second clamping plate, with a connecting rod assembly between them. Corresponding through holes are formed on the first and second clamping plates, and self-locking nuts are placed within these holes. The top plate is driven by the first clamping plate, and the through holes on the first and second clamping plates slide to clamp the self-locking nuts. During the reverse rotation of the rotating shaft driven by the drive mechanism, the shaft drives the top plate, the placement plate, and the self-locking nuts on the top of the placement plate to rotate synchronously, causing all the self-locking nuts to rotate directly above the collection box and automatically fall into the collection box, thus achieving automatic unloading.

Description

Technical Field

[0001] This utility model belongs to the technical field of grinding devices, specifically relating to a grinding device for the closing of aerospace self-locking nuts. Background Technology

[0002] Aerospace is a product of humankind's expansion into the atmosphere and outer space. After more than a century of rapid development, aerospace has become one of the most active and influential scientific and technological fields in the 21st century. Major achievements in this field mark the latest developments in human civilization and also represent the advanced level of a country's science and technology. Self-locking nuts are required in the aerospace field.

[0003] A self-locking nut is a nut that locks itself using friction. Ordinary nuts tend to loosen during use due to vibration or other reasons. To prevent this, self-locking nuts were invented. Their main functions are anti-loosening and vibration resistance. They are used in special applications, and their working principle is generally based on frictional self-locking. Self-locking nuts can be classified by function into types such as those with embedded nylon rings, those with necked ends, and those with metal anti-loosening devices.

[0004] When machining self-locking nuts, a grinding device is required to finish the nut's edge. However, existing grinding devices are inconvenient for unloading after grinding, often requiring operators to remove the ground nuts one by one. This is inconvenient and hinders the quick removal of the ground nuts, resulting in mediocre performance in practice. Therefore, there is an urgent need for a grinding device for aerospace self-locking nuts.

[0005] A patent with publication number CN210232519U discloses a grinding device for the closing of aerospace self-locking nuts. The device includes a self-locking nut, a nut template, an annular groove, a lower pressure plate, and a through hole. In use, the self-locking nut is placed in the annular groove of the nut template. Then, the lower pressure plate is placed on top of the nut, allowing it to pass through the through hole in the lower pressure plate. Rotating the bolt fixes the lower pressure plate to the nut template, thus limiting the movement of the self-locking nut during grinding. After grinding, rotating the bolt releases the limitation on the self-locking nut, and all the self-locking nuts can then be removed.

[0006] However, the above method is inefficient in removing the self-locking nuts after grinding. The process requires not only rotating the bolts to release the lower pressure plate from the self-locking nuts, but also removing the self-locking nuts one by one from the annular groove. This makes it inconvenient to quickly remove the self-locking nuts, cannot achieve automatic feeding, and is not convenient for practical application. Utility Model Content

[0007] To address the problems existing in the background technology, this utility model provides a grinding device for the closing of aerospace self-locking nuts.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A grinding device for the closing of aerospace self-locking nuts includes a base, a collection box fixedly mounted on one side of the base, a rotating shaft rotatably mounted on the top of the base, and a driving mechanism acting on the rotating shaft; a top plate fixedly mounted on the outer surface of the rotating shaft, and a placement plate rotatably mounted via a limiting member, with a clamping mechanism on the top of the placement plate; the clamping mechanism includes a first clamping plate and a second clamping plate, with a connecting rod assembly between the first and second clamping plates; a reset member is provided on the connecting rod assembly, and the first clamping plate, the second clamping plate, and the connecting rod assembly form a parallelogram; several corresponding through holes are opened on the first and second clamping plates, and self-locking nuts are placed in each of the several corresponding through holes; the top plate is driven to engage with the first clamping plate, and the through holes on the first and second clamping plates slide to clamp the self-locking nuts.

[0010] Furthermore, the drive mechanism includes a second servo motor, and the top of the base is both fixedly mounted with the second servo motor and fixedly provided with a support block; the output shaft of the second servo motor is fixedly connected to one end of the rotating shaft, and the other end of the rotating shaft is rotatably connected to the support block.

[0011] Furthermore, the limiting component includes a limiting block, a clearance groove is formed in the rotating shaft, the limiting block is slidably disposed in the clearance groove and a spring is fixedly disposed therein, one end of the spring is fixedly connected to the limiting block and the other end is fixedly connected to the inner wall of the clearance groove; the placement plate has a limiting groove, and the limiting block and the limiting groove are engaged in a transmission engagement.

[0012] Furthermore, the linkage assembly includes a movable plate, two first shafts are rotatably disposed within the first abutment plate, and two second shafts are rotatably disposed within the second abutment plate; the first shafts and the second shafts correspond one-to-one, and a movable plate is provided between the end of each first shaft and the end of the corresponding second shaft; one end of the movable plate is rotatably connected to the end of the first shaft, and the other end is rotatably connected to the end of the second shaft.

[0013] Furthermore, the reset component includes a reset torsion spring, two support plates are fixedly installed on both sides of the placement plate, and a third shaft is fixedly installed between the two opposing support plates; the end of the third shaft corresponds to the movable plate one by one, and the end of each third shaft 22 is rotatably connected to the middle of the corresponding movable plate, and a reset torsion spring is provided at the rotatable connection between the third shaft and the movable plate.

[0014] Furthermore, a servo electric cylinder is fixedly installed on the top of the base, a first servo motor is fixedly installed on the telescopic shaft of the servo electric cylinder, and a grinding disc is fixedly installed on the output shaft of the first servo motor.

[0015] Furthermore, a number of anti-displacement blocks corresponding to the self-locking nuts are fixedly installed on the top of the placement plate.

[0016] This application has the following beneficial effects: 1. During the forward rotation of the shaft driven by the drive mechanism, the limiting component releases the locking mechanism between the shaft and the placement plate, allowing the top plate to rotate and push the first abutment plate within the abutment assembly. This causes the corresponding through holes on the first and second abutment plates to misalign, thereby abutting the self-locking nut within the through hole. This achieves the limiting and fixing of the self-locking nut, preventing it from shifting during processing. This application eliminates the need for manual fixing of the self-locking nut, simplifying operation and reducing the workload of workers, resulting in better practicality.

[0017] 2. During the reverse rotation of the drive mechanism, the shaft rotates first, causing the limiting component to re-engage and limit the connection between the shaft and the placement plate. Simultaneously, with the assistance of the reset component, the through holes on the first and second abutment plates align again, releasing the abutment of the self-locking nuts. Subsequently, the shaft drives the top plate, placement plate, and the self-locking nuts on top of the placement plate to rotate synchronously, causing all the self-locking nuts to rotate directly above the collection box and automatically fall into the collection box, thus achieving automatic unloading and facilitating quick removal of the self-locking nuts, which is more conducive to practical application. Attached Figure Description

[0018] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model during rotation; Figure 3 This is a schematic diagram of the drive mechanism structure of this utility model; Figure 4 This is a partial plan view of the present invention; Figure 5 This is a utility model Figure 4 A magnified view of a portion of point A in the middle; Figure 6 This is a schematic diagram of the limiting component structure of this utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Base; 2. Servo electric cylinder; 3. First servo motor; 4. Grinding disc; 5. Movable plate; 6. Support plate; 7. Placement plate; 8. First clamping plate; 9. Self-locking nut; 10. Second clamping plate; 11. Top plate; 12. Support block; 13. Rotating shaft; 14. Second servo motor; 15. First shaft; 16. Spring; 17. Limiting block; 18. Limiting groove; 19. Anti-deviation block; 20. Second shaft; 21. Collection box; 22. Third shaft. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] like Figures 1-6 As shown, the technical solution adopted by this utility model is as follows: A grinding device for closing the end of aerospace self-locking nuts includes a base 1. The top of the base 1 is rotatably provided with a rotating shaft 13 and a driving mechanism acting on the rotating shaft 13. The outer surface of the rotating shaft 13 is fixedly provided with a top plate 11 and a placement plate 7 is rotatably provided through a limiting member. The top of the placement plate 7 is provided with a pressing mechanism.

[0022] The clamping mechanism includes a first clamping plate 8 and a second clamping plate 10, and a connecting rod assembly is provided between the first clamping plate 8 and the second clamping plate 10; a reset member is provided on the connecting rod assembly, and the first clamping plate 8, the second clamping plate 10 and the connecting rod assembly form a parallelogram.

[0023] Several through holes are provided on the first abutting plate 8 and the second abutting plate 10. Several through holes on the first abutting plate 8 correspond one-to-one with several through holes on the second abutting plate 10. A self-locking nut 9 is placed in each of the several corresponding through holes. The through holes on the first abutting plate 8 and the second abutting plate 10 slide to abut against the self-locking nut 9.

[0024] Furthermore, the radius of the through hole on the first clamping plate 8 and the second clamping plate 10 is larger than the radius of the self-locking nut 9.

[0025] Furthermore, the self-locking nut 9 is placed on the top of the placement plate 7; several anti-deviation blocks 19 are fixedly installed on the top of the placement plate 7, and the several anti-deviation blocks 19 correspond to the self-locking nut 9 to prevent the self-locking nut 9 from deviating, so as to facilitate the unloading of the self-locking nut 9.

[0026] The drive mechanism includes a second servo motor 14. The second servo motor 14 is fixedly mounted on the top of the base 1, and a support block 12 is also fixedly mounted on the top. The output shaft of the second servo motor 14 is fixedly connected to one end of the rotating shaft 13, and the other end of the rotating shaft 13 is rotatably connected to the support block 12.

[0027] The limiting component includes a limiting block 17, a relief groove is opened in the rotating shaft 13, the limiting block 17 is slidably inserted in the relief groove, and a spring 16 is fixedly installed in the relief groove. One end of the spring 16 is fixedly connected to the limiting block 17, and the other end is fixedly connected to the inner wall of the relief groove. A limiting groove 18 is opened in the placement plate 7, and the limiting block 17 and the limiting groove 18 are engaged in a transmission engagement.

[0028] The connecting rod assembly includes a movable plate 5, two first shafts 15 are rotatably arranged inside the first abutting plate 8, and two second shafts 20 are rotatably arranged inside the second abutting plate 10. The first shafts 15 and the second shafts 20 correspond one-to-one. A movable plate 5 is provided between the end of each first shaft 15 and the end of the corresponding second shaft 20. One end of the movable plate 5 is rotatably connected to the end of the first shaft 15, and the other end is rotatably connected to the end of the second shaft 20.

[0029] The reset component includes a reset torsion spring (not shown in the figure). Two support plates 6 are fixedly installed on both sides of the placement plate 7, and a third shaft 22 is fixedly installed between the two opposing support plates 6. The ends of the third shaft 22 correspond one-to-one with the movable plates 5. The end of each third shaft 22 is rotatably connected to the middle of the corresponding movable plate 5, and a reset torsion spring (not shown in the figure) is provided at the rotatable connection between the third shaft 22 and the movable plate 5.

[0030] In addition, a collection box 21 is fixedly installed on one side of the base 1, a servo electric cylinder 2 is fixedly installed on the top of the base 1, a first servo motor 3 is fixedly installed on the telescopic shaft of the servo electric cylinder 2, and a grinding disc 4 is fixedly installed on the output shaft of the first servo motor 3.

[0031] Working principle: Initial state as follows Figure 1 As shown, at this time, the placement plate 7 is in contact with the top of the base 1, and the through hole on the first abutment plate 8 is directly opposite the through hole on the second abutment plate 10. At the same time, the top plate 11 is in contact with the first abutment plate 8 without any abutting force, the limiting block 17 is restricted in the limiting groove 18, and the reset torsion spring is in a non-deformed state.

[0032] In use, the self-locking nut 9 is passed through the through holes of the first abutment plate 8 and the second abutment plate 10 in sequence, so that the self-locking nut 9 is placed on the top of the placement plate 7 and slides on the outer surface of the anti-displacement block 19.

[0033] Subsequently, the second servo motor 14 is started, and the output shaft of the second servo motor 14 drives the rotating shaft 13 to rotate forward. Since the placement plate 7 is located on top of the base 1 and cannot rotate, the rotation of the rotating shaft 13 will cause the limiting block 17 to slide back into the clearance groove and squeeze the spring 16, so that the limiting block 17 disengages from the limiting groove 18, thereby releasing the limitation between the rotating shaft 13 and the placement plate 7, so that the rotating shaft 13 and the placement plate 7 rotate relative to each other.

[0034] As the rotating shaft 13 rotates, it drives the top plate 11 to rotate synchronously. During the rotation of the top plate 11, it pushes the first abutting plate 8 to move, causing the movable plate 5 to rotate around the central axis of the third shaft 22 and twist the reset torsion spring. The rotation of the movable plate 5 drives the second abutting plate 10 to move, causing the through holes on the first abutting plate 8 and the second abutting plate 10 to be misaligned, thereby tightening and limiting the self-locking nut 9 in the through hole to prevent the self-locking nut 9 from shifting during the grinding process.

[0035] Then, the height of the grinding disc 4 is adjusted by the servo electric cylinder 2, and the grinding disc 4 is rotated by the first servo motor 3 to perform the grinding operation.

[0036] After polishing, the output shaft of the second servo motor 14 drives the rotating shaft 13 to reverse. During this process, the rotating shaft 13 first rotates relative to the placement plate 7 until the limiting block 17 rotates to the position of the limiting groove 18. The limiting block 17 will be locked back into the placement plate 7 under the elastic action of the spring 16 to achieve the locking and limiting between the rotating shaft 13 and the placement plate 7.

[0037] During this process, the rotating shaft 13 will drive the top plate 11 to rotate, thereby releasing the restriction of the top plate 11 on the first abutting plate 8. At the same time, the movable plate 5 will drive the first abutting plate 8 and the second abutting plate 10 to reset under the elastic action of the return torsion spring, until the through hole on the first abutting plate 8 is aligned with the through hole on the second abutting plate 10, thereby releasing the restriction on the self-locking nut 9. At this time, the top plate 11 is just in contact with the first abutting plate 8 and there is no clamping force between them, and the limiting block 17 is just stuck in the limiting groove 18.

[0038] Subsequently, the rotating shaft 13 drives the top plate 11, the placement plate 7, and the self-locking nut 9 on the top of the placement plate 7 to rotate synchronously, so that all the self-locking nuts 9 rotate to the top of the collection box 21 and automatically fall into the collection box 21, so as to realize automatic unloading, facilitate the quick removal of the self-locking nuts 9, and make it more conducive to practical promotion and use.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A grinding device for the closing of aerospace self-locking nuts, characterized in that, The system includes a base (1), a collection box (21) is fixedly installed on one side of the base (1), a rotating shaft (13) is rotatably installed on the top of the base (1), and a driving mechanism acting on the rotating shaft (13) is provided; a top plate (11) is fixedly installed on the outer surface of the rotating shaft (13), and a placement plate (7) is rotatably installed through a limiting member; a pressing mechanism is provided on the top of the placement plate (7); the pressing mechanism includes a first pressing plate (8) and a second pressing plate (10), and a connecting rod assembly is provided between the first pressing plate (8) and the second pressing plate (10); a reset member is provided on the connecting rod assembly, and the first pressing plate (8), the second pressing plate (10) and the connecting rod assembly form a parallelogram; several corresponding through holes are opened on the first pressing plate (8) and the second pressing plate (10), and a self-locking nut (9) is placed in each of the several corresponding through holes; the top plate (11) is driven to cooperate with the first pressing plate (8), and the through holes on the first pressing plate (8) and the second pressing plate (10) slide to press against the self-locking nut (9).

2. The aerospace self-locking nut end-grinding device according to claim 1, characterized in that, The drive mechanism includes a second servo motor (14), and the second servo motor (14) is fixedly installed on the top of the base (1), and a support block (12) is fixedly set thereon; the output shaft of the second servo motor (14) is fixedly connected to one end of the rotating shaft (13), and the other end of the rotating shaft (13) is rotatably connected to the support block (12).

3. The aerospace self-locking nut end-grinding device according to claim 1, characterized in that, The limiting component includes a limiting block (17), and a relief groove is opened in the rotating shaft (13). The limiting block (17) is slidably inserted in the relief groove, and a spring (16) is fixedly installed therein. One end of the spring (16) is fixedly connected to the limiting block (17), and the other end is fixedly connected to the inner wall of the relief groove. A limiting groove (18) is opened in the placement plate (7), and the limiting block (17) and the limiting groove (18) are engaged in a transmission engagement.

4. The aerospace self-locking nut end-grinding device according to claim 1, characterized in that, The linkage assembly includes a movable plate (5), two first shafts (15) are rotatably arranged inside the first abutment plate (8), and two second shafts (20) are rotatably arranged inside the second abutment plate (10); the first shafts (15) and the second shafts (20) correspond one-to-one, and a movable plate (5) is provided between the end of each first shaft (15) and the end of the corresponding second shaft (20); one end of the movable plate (5) is rotatably connected to the end of the first shaft (15), and the other end is rotatably connected to the end of the second shaft (20).

5. The aerospace self-locking nut end-grinding device according to claim 4, characterized in that, The reset component includes a reset torsion spring. Two support plates (6) are fixedly installed on both sides of the placement plate (7), and a third shaft (22) is fixedly installed between the two opposing support plates (6). The end of the third shaft (22) corresponds one-to-one with the movable plate (5). The end of each third shaft (22) is rotatably connected to the middle of the corresponding movable plate (5), and a reset torsion spring is provided at the rotatable connection between the third shaft (22) and the movable plate (5).

6. The aerospace self-locking nut end-grinding device according to claim 1, characterized in that, The servo electric cylinder (2) is fixedly installed on the top of the base (1), the telescopic shaft of the servo electric cylinder (2) is fixedly provided with the first servo motor (3), and the output shaft of the first servo motor (3) is fixedly provided with the grinding disc (4).

7. The aerospace self-locking nut end-grinding device according to claim 1, characterized in that, Several anti-offset blocks (19) corresponding to the self-locking nuts (9) are fixedly installed on the top of the placement plate (7).

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