Rivet posture adjustment centering mechanism

Abstract

This invention discloses a rivet posture adjustment and centering mechanism, including a rivet hammer mechanism. The rivet hammer mechanism includes a rivet gun, a rivet head mounted on the front end of the rivet gun, and two sets of rivet clamps symmetrically arranged and fitted on the outside of the rivet head. The rivet gun is mounted on the telescopic rod of a telescopic cylinder. A rivet is installed on the front end of the rivet head, and the front end of each rivet clamp corresponds to the rivet. The rear end of each rivet clamp is rotatably connected to the rivet gun. A wing plate is provided at the rear end of each rivet clamp. Centering mechanisms are correspondingly arranged on the outside of each rivet clamp, with the centering mechanism located on the wing plate near the rivet. The centering mechanism includes a bracket, an adjustment knob, a top head, and a spring. The adjustment knob is inserted into the bracket, and the top head is installed on the front end of the adjustment knob and corresponds to the rivet clamp. A bushing is fitted between the bracket and the adjustment knob, and a spring is installed between the adjustment knob, the bushing, and the top head. The features of this invention are: simple structure, convenient operation, safety and practicality, high rivet clamping accuracy, high centering accuracy, and the spring reset structure can meet the practical requirements of hammer riveting cycle.

Description

Technical Field

[0001] This invention relates to the field of aircraft assembly technology, specifically to a rivet attitude adjustment and alignment mechanism. Background Technology

[0002] Riveting is one of the main tasks in aircraft assembly. Traditional automatic riveting mechanisms are generally designed for countersunk rivets. Since the countersunk hole has an angle, the equipment does not need to have high positioning accuracy and rivet clamping accuracy. The rivet can be smoothly inserted by utilizing the guiding effect of the countersunk hole. However, for flat round head rivets, it is difficult to insert the rivet accurately due to clamping accuracy issues and the lack of a countersunk hole for guidance. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a rivet posture adjustment and centering mechanism that can improve the rivet clamping accuracy.

[0004] The technical solution adopted by the present invention to achieve the above-mentioned objective is: a rivet posture adjustment and centering mechanism, including a rivet hammer mechanism, wherein the rivet hammer mechanism includes a rivet gun, a rivet head installed at the front end of the rivet gun, and two sets of rivet clamps symmetrically arranged and fitted on the outside of the rivet head. The rivet gun is mounted on the telescopic rod of a telescopic cylinder. A rivet is installed at the front end of the rivet head. The front end of the rivet clamp corresponds to the rivet. The rear end of the rivet clamp is rotatably connected to the rivet gun. A wing plate is provided at the rear end of the rivet clamp. A centering mechanism is correspondingly provided on the outside of each rivet clamp. The centering mechanism is located on the side of the wing plate closer to the rivet. The device includes a bracket, an adjusting knob, a jack, and a spring. The adjusting knob is mounted on the bracket, and the jack is installed at the front end of the adjusting knob and corresponds to the rivet clamp. A bushing is fitted between the bracket and the adjusting knob. A spring is installed between the adjusting knob, the bushing, and the jack. When the telescopic rod of the telescopic cylinder extends, the rivet hammer mechanism moves forward. When it moves to the point where the wing plate contacts the bracket, the rivet clamp opens outward around the rotation axis, and the jack moves outward with the rivet clamp, compressing the spring. When the telescopic rod of the telescopic cylinder retracts, the spring returns to its original position, and the spring lifts the jack, which in turn lifts the rivet clamp to close it.

[0005] The cylinder body of the telescopic cylinder is mounted on a fixed frame, and a linear guide rail is mounted on the fixed frame. The rivet gun is connected to the telescopic rod of the telescopic cylinder through a sliding frame, and the sliding frame is slidably mounted on the linear guide rail.

[0006] The rivet clip is rotatably mounted on the rivet gun via a rotating shaft.

[0007] A clearance is provided between the wing plate and the centering mechanism.

[0008] The features of this invention are: simple structure, convenient operation, safe and practical, high rivet clamping accuracy and high centering accuracy, and through the spring reset structure, it can meet the practical requirements of hammer riveting cycle. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the present invention.

[0010] Figure 2 yes Figure 1 Top view.

[0011] Figure 3 yes Figure 2 A partial schematic diagram.

[0012] The components include: 1. Rivet gun; 2. Rivet head; 3. Rivet; 4. Telescopic cylinder; 5. Fixing frame; 6. Linear guide rail; 7. Sliding frame; 8. Rivet clamp; 9. Wing plate; 10. Rotating shaft; 11. Bracket; 12. Adjusting knob; 13. Top head; 14. Bushing; 15. Spring. Detailed Implementation

[0013] like Figure 1-3 As shown, this invention is a rivet posture adjustment and centering mechanism, including a rivet hammer mechanism. The rivet hammer mechanism includes a rivet gun 1, a rivet head 2 installed at the front end of the rivet gun 1, and two sets of rivet clips 8 symmetrically arranged and fitted on the outside of the rivet head 2. The rivet gun 1 is mounted on the telescopic rod of a telescopic cylinder 4 via a sliding frame 7. The cylinder body of the telescopic cylinder 4 is mounted on a fixed frame 5. A linear guide rail 6 is installed on the fixed frame 5. The sliding frame 7 is slidably mounted on the linear guide rail 6. When the telescopic rod of the telescopic cylinder 4 extends or retracts, it drives the rivet hammer mechanism to move back and forth along the linear guide rail 6. A rivet 3 is installed at the front end of the rivet head 2. The front end of the rivet clip 8 corresponds to the rivet 3. The rear end of the rivet clip 8 is rotatably connected to the rivet gun 1 via a rotating shaft 10. A wing plate 9 integrally formed with the rear end of the rivet clip 8 is provided. Both sides of the rivet clip 8 are... A centering mechanism is provided, which is located on the side of the wing plate 9 near the rivet 3, with a movement gap between them. When the wing plate 9 of the rivet clamp 8 contacts the centering mechanism, the two sets of rivet clamps 8 will open to both sides around their respective rotation axes 10. The centering mechanism includes a bracket 11, an adjusting knob 12, a top head 13, and a spring 15. The adjusting knob 12 is inserted into the bracket 11, and the top head 13 is installed at the front end of the adjusting knob 12 and corresponds to the rivet clamp 8. A bushing 14 is fitted between the bracket 11 and the adjusting knob 12. The spring 15 is installed between the adjusting knob 12, the bushing 14, and the top head 13. Rotating the adjusting knob 12 can adjust the compression length of the spring 15, so that the force on both sides of the rivet clamp 8 is even, thereby controlling the opening degree of the rivet clamp 8 and keeping the opening and closing of the rivet clamp 8 on both sides in a symmetrical state.

[0014] During operation, the rivet hammer mechanism moves as a whole, driving the rivet 3 to the workpiece hole. Then, the telescopic rod of the telescopic cylinder 4 extends, and the rivet hammer mechanism moves forward accordingly. When it moves to the point where the wing plate 9 contacts the bracket 11, the rivet clamp 8 is forced and rotates around the rotating shaft 10 to open outward. The top head 13 moves outward with the rivet clamp 8, and the spring 15 is compressed. The opening and closing angles of the rivet clamps 8 on both sides are the same, and the rivet head 2 can smoothly insert the rivet 3 into the workpiece hole to start the riveting operation. When the riveting operation is completed, the telescopic rod of the telescopic cylinder 4 retracts, the spring 15 returns to its original position, the spring 15 lifts the top head 13, and the top head 13 lifts the rivet clamp 8 to close and return to its original position.

[0015] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A rivet attitude adjustment centering mechanism, characterized by: The riveting hammer mechanism comprises a riveting gun, a riveting head mounted at the front end of the riveting gun, and two groups of rivet clamps symmetrically arranged and sleeved outside the riveting head, the riveting gun is mounted on the telescopic rod of a telescopic cylinder, the riveting head is mounted with a rivet at the front end, the rivet clamps are correspondingly arranged at the front end of the rivet clamps, the rear end of the rivet clamps is rotatably connected to the riveting gun through a rotating shaft, the rear end of the rivet clamps is provided with a wing plate in an integral structure, the outer side of the rivet clamps is correspondingly provided with a centering mechanism, a moving gap is left between the wing plate and the centering mechanism, the centering mechanism is arranged on the side of the wing plate close to the rivet, the centering mechanism comprises a bracket, an adjusting knob, a top head, and a spring, the adjusting knob is inserted into the bracket, the top head is mounted at the front end of the adjusting knob and corresponds to the rivet clamp, a shaft sleeve is sleeved between the bracket and the adjusting knob, the spring is mounted between the adjusting knob, the shaft sleeve, and the top head, the compression length of the spring can be adjusted by rotating the adjusting knob, so that the force on the two rivet clamps is uniform, thereby controlling the opening degree of the rivet clamps and keeping the opening and closing of the two rivet clamps in a symmetrical state, when the telescopic rod of the telescopic cylinder is extended, the riveting hammer mechanism moves forward, when the wing plate contacts the bracket, the rivet clamps open outward around the rotating shaft, the top head moves outward with the rivet clamps, the spring is compressed, and the opening and closing angles of the two rivet clamps are the same, when the telescopic rod of the telescopic cylinder is retracted, the spring is reset, the spring lifts the top head, and the top head lifts the rivet clamps to close them.

2. The rivet attitude adjustment centering mechanism of claim 1, wherein: The cylinder body of the telescopic cylinder is mounted on a fixed frame, a linear guide rail is mounted on the fixed frame, the riveting gun is connected to the telescopic rod of the telescopic cylinder through a sliding frame, and the sliding frame is slidingly mounted on the linear guide rail.

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