An intelligent local annealing device for nail sleeves

Abstract

The present invention discloses a nail sleeve intelligent local annealing device, which includes a clamping and rotating mechanism, a heating mechanism and a controller. The heating mechanism includes a heating coil with a heating hole in the middle. The clamping and rotating mechanism is used for clamping the nail sleeve and passing the nail sleeve through the heating hole for rotary heating. The nail sleeve intelligent local annealing device further includes a top rotating mechanism, which is arranged directly below the heating hole and is used for inserting into the nail sleeve from the bottom opening of the nail sleeve, top supporting and following the nail sleeve. By setting the top supporting mechanism, the present invention ensures the uniform rotation of the nail sleeve, so that the nail sleeve is uniformly heated, and the product quality and qualification rate are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of aviation bolt production, and particularly relates to an intelligent local annealing device for a nail sleeve. Background Art

[0002] During the assembly process of an aircraft wing and the fuselage, when an instantaneous large tensile force is axially applied to the core rod of a blind rivet, a bulge is formed in the nail body made of a superalloy material in the precisely annealed and softened area, so as to accurately assemble and bond the aircraft wing and the fuselage skin together with an aviation blind rivet. The surface heating temperature error of the local annealing area of the nail body (also called the nail sleeve) is required not to exceed ±10°C, and there are extremely high consistency requirements for the heating temperature and heating uniformity in the annealing area, so that the circumferential hardness of the nail body after annealing is uniform, and finally the consistency of the riveting force and the interchangeability of the blind rivets are realized, thus ensuring the flight safety of various aircraft and aircraft.

[0003] The existing heating of the local annealing area of the nail body (also called the nail sleeve) is uneven, resulting in a high defective rate of the nail sleeve annealing process. Summary of the Invention

[0004] The purpose of the present invention is to solve the defects existing in the prior art, and a nail sleeve intelligent local annealing device is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical scheme: an intelligent local annealing device for a nail sleeve, including a clamping and rotating mechanism, a heating mechanism and a controller. The heating mechanism includes a heating coil with a heating hole in the middle. The clamping and rotating mechanism is used to clamp the nail sleeve and rotate and heat the nail sleeve through the heating hole. The intelligent local annealing device for the nail sleeve further includes a top-rotating mechanism, which is arranged directly below the heating hole and is used to insert into the nail sleeve from the bottom opening of the nail sleeve, top and follow the nail sleeve.

[0006] Preferably, the top-rotating mechanism includes a top-bearing cap, a rotating shaft, a first bearing and a bearing seat. The top-bearing cap includes a top-bearing cone body at the upper part and a connecting column body integrally connected to the top-bearing cone body and located at the lower part of the cone body. The connecting column body is provided with a downward opening. The upper end of the rotating shaft is sleeved in the opening. The rotating shaft is arranged in the bearing, and the bearing is arranged in the bearing seat. The rotating shaft rotates following the top-bearing cap.

[0007] Preferably, the top-rotating mechanism further includes a spring, and the spring is sleeved on the rotating shaft between the first bearing and the top-bearing cap.

[0008] Preferably, the top-rotating mechanism further includes a second bearing, and the second bearing is sleeved on the lower part of the rotating shaft.

[0009] Preferably, the cavity of the bearing seat is a stepped structure for installing the first bearing and the second bearing, and at the same time, the first bearing and the second bearing are fixed in the bearing seat by combining snap rings.

[0010] Preferably, the clamping and rotating mechanism is a SCARA four-axis robot, and the heating mechanism is a servo heating system.

[0011] Preferably, the intelligent local annealing device for nail sleeves further includes an automatic feeding device, which includes a vibrating feeding tray, a feeding chute rail, and a feeding and transferring mechanism for separating and transferring single nail sleeves. The clamping and rotating mechanism clamps the nail sleeves from the transferring mechanism and places the nail sleeves on the heating mechanism for heating.

[0012] Preferably, the feeding and transferring structure includes a cylinder bracket, a transferring cylinder is arranged on the cylinder bracket, a transferring block is arranged on the transferring cylinder, a transferring groove for transferring single nail sleeves is arranged on the transferring block, a stop block is arranged on the opposite side of the transferring cylinder and in the transferring direction, and the stop block is used to prevent the nail sleeves from detaching from the transferring groove of the transferring block during the movement of the transferring block.

[0013] Preferably, the feeding and transferring structure further includes an opposed sensor, which includes a transmitting end and a receiving end. The transmitting end and the receiving end are respectively located in front of and behind the transferring block, and are used to detect whether there are nail sleeves in the transferring groove of the transfer.

[0014] Preferably, the intelligent local annealing device for nail sleeves further includes a temperature sensor for collecting the heating temperature of the nail sleeves.

[0015] The present invention has the following beneficial effects:

[0016] By setting the top supporting mechanism, the present invention ensures the uniform rotation of the nail sleeves, so that the nail sleeves are heated evenly, improving the quality and qualification rate of the products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of an intelligent local annealing device for nail sleeves proposed by the present invention;

[0018] Figure 2 is a schematic structural diagram of the automatic feeding device proposed by the present invention;

[0019] Figure 3 is a schematic structural diagram of the four-axis robot proposed by the present invention;

[0020] Figure 4 is a schematic structural diagram of the combination of the servo heating system and the top rotating mechanism proposed by the present invention;

[0021] Figure 5 is a sectional view of the top rotating mechanism proposed by the present invention;

[0022] Legend Explanation: Automatic feeding device 1, vibrating feeding tray 11, feeding chute rail 12, cylinder support 13, transfer cylinder 14, transfer block 141, transfer chute 1411, stop block 15, transmitting end 161, receiving end 162, SCARA four-axis robot 2, rotating shaft 21, vacuum rotary suction head 22, top rotating mechanism 3, top bearing cap 31, rotating shaft 32, first bearing 33, second bearing 34, spring 35, bearing seat 36, snap ring 37, top bearing cone 311, connecting cylinder 312, servo heating system 4, heating coil 41, temperature sensor 42. Detailed Implementation Manner

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", "rear", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0025] Refer to Figures 1-5 , an embodiment provided by the present invention: an intelligent local annealing device for nail sleeves,

[0026] including an automatic feeding device 1, a clamping and rotating mechanism 2, a top rotating mechanism 3 and a heating mechanism,

[0027] The automatic feeding device 1 is used for automatic material distribution and feeding,

[0028] The heating mechanism includes a heating coil 41 with a heating hole in the middle,

[0029] The clamping and rotating mechanism is used for clamping the nail sleeve and passing the nail sleeve through the heating hole to perform local rotational heating on the nail sleeve,

[0030] The automatic feeding device 1 includes a vibrating feeding tray 11, a feeding chute rail 12 and a material distribution and transfer mechanism for distributing and transferring a single nail sleeve. The clamping and rotating mechanism clamps the nail sleeve from the transfer mechanism and places the nail sleeve on the heating mechanism for heating.

[0031] The material separation and transfer structure includes a cylinder bracket 13, on which a transfer cylinder 14 is provided. A transfer block 141 is provided on the transfer cylinder 14, and a transfer groove 1411 for transferring a single nail sleeve is provided on the transfer block 141. A stop block 15 is provided on the opposite side of the transfer cylinder 14 in the transfer direction. The stop block 15 is used to prevent the nail sleeve from separating from the transfer groove 1411 of the transfer block 141 during the movement of the nail sleeve along with the transfer block 141.

[0032] The material separation and transfer structure further includes a photoelectric sensor. The photoelectric sensor includes a transmitting end 161 and a receiving end 162, which are respectively located in front of and behind the transfer block 141, and are used to detect whether there is a nail sleeve in the transfer groove 1411 of the transfer.

[0033] The clamping and rotating mechanism uses a SCARA four-axis robot 2, which includes a rotating shaft 21 and a vacuum rotary suction head 22 connected to the rotating shaft 21.

[0034] The top-rotating mechanism 3 is arranged directly below the heating hole and is used to insert into the bottom opening of the nail sleeve, support and follow the movement of the nail sleeve. The top-rotating mechanism 3 includes a top-bearing cap 31, a rotating shaft 32, a first bearing 33, a second bearing 34, a spring 35 and a bearing seat 36. The spring 35 is sleeved on the rotating shaft 32 between the first bearing 33 and the top-bearing cap 31. Two first bearings 33 and second bearings 34 are provided to make the rotating shaft 32 stable and not shake, so that the nail sleeve rotates evenly and is heated evenly. During heating, the fourth rotating shaft 21 presses downwards, so that the nail sleeve is in full contact with the surface of the top-bearing cone 311. Under the action of static friction, the vacuum rotary suction head 22 drives the top-bearing cap 31 to rotate, and the top-bearing cap 31 drives the rotating shaft 21 to rotate.

[0035] The cavity of the bearing seat 36 is a stepped structure for installing the first bearing 33 and the second bearing 34. At the same time, snap rings 37 are used to fix the first bearing 33 and the second bearing 34 in the bearing seat 36. The first bearing 33 is located in the upper part of the bearing seat 36 and the second bearing 34 is located in the lower part of the bearing seat 36.

[0036] The top-bearing cap 31 includes a top-bearing cone 311 in the upper part and a connecting cylinder 312 integrally connected to the top-bearing cone and located in the lower part of the cone. The connecting cylinder 312 is provided with a downward opening, and the upper end of the rotating shaft 32 is sleeved in the opening, and the rotating shaft 32 follows the rotation of the top-bearing cap 31.

[0037] The heating mechanism is a servo heating system 4. The servo heating system 4 is provided with a heating coil 41 and a coil bracket to fix the heating coil 41 on the bracket to make the coil stable, which is beneficial to the uniform heating of the nail sleeve.

[0038] The intelligent local annealing device for nail sleeves further includes a temperature sensor 42 for collecting the heating temperature of the nail sleeves.

[0039] Working principle:

[0040] The top sleeve separates single nail sleeves through the vibrating loading tray 11, the feeding chute rail 12, the transfer cylinder 14, and the transfer block 141. The SCARA four-axis robot 2 transfers the nail sleeve to directly above the top bearing mechanism through the vacuum rotary suction head 22. The rotating shaft 21 of the SCARA four-axis robot 2 presses downward, so that the nail sleeve is in full contact with the tip of the top bearing cone 311. Under the action of static friction, the vacuum rotary suction head 22 drives the top bearing cap 31 to rotate, and the top bearing cap 31 drives the rotating shaft 21 to rotate. The nail sleeve rotates and is heated uniformly in the heating coil 41.

[0041] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent local annealing device for a nail sleeve, comprising a clamping and rotating mechanism, a heating mechanism and a controller. The heating mechanism includes a heating coil with a heating hole in the middle. The clamping and rotating mechanism is used to clamp the nail sleeve and pass the nail sleeve through the heating hole for rotational heating. It is characterized in that: The intelligent local annealing device for the nail sleeve further includes a top-rotating mechanism, which is arranged directly below the heating hole and is used to insert into the nail sleeve from the bottom opening of the nail sleeve, support and follow the nail sleeve; the top-rotating mechanism includes a top-supporting cap, a rotating shaft, a first bearing and a bearing seat. The top-supporting cap includes a top-supporting cone at the upper part and a connecting column body integrally connected to the top-supporting cone and located at the lower part of the cone. The connecting column body is provided with a downward opening. The upper end of the rotating shaft is sleeved in the opening. The rotating shaft passes through the bearing, and the bearing is arranged in the bearing seat. The rotating shaft rotates following the top-supporting cap; the top-rotating mechanism further includes a spring, and the spring is sleeved on the rotating shaft between the first bearing and the top-supporting cap; the top-rotating mechanism further includes a second bearing, and the second bearing is sleeved on the lower part of the rotating shaft.

2. The intelligent local annealing device for a nail sleeve according to claim 1, characterized in that: The cavity of the bearing seat is a stepped structure for installing the first bearing and the second bearing, and at the same time, a circlip is combined to fix the first bearing and the second bearing in the bearing seat.

3. The intelligent local annealing device for a nail sleeve according to claim 1, characterized in that: The clamping and rotating mechanism is a SCARA four-axis robot, and the heating mechanism is a servo heating system.

4. The intelligent local annealing device for a nail sleeve according to claim 1, characterized in that: It further includes an automatic feeding device, which includes a vibrating feeding tray, a feeding chute rail and a feeding and transferring mechanism for separating and transferring single nail sleeves. The clamping and rotating mechanism clamps the nail sleeve from the transferring mechanism and places the nail sleeve on the heating mechanism for heating.

5. The intelligent local annealing device for a nail sleeve according to claim 4, characterized in that: The feeding and transferring structure includes a cylinder bracket, on which a transferring cylinder is arranged. A transferring block is arranged on the transferring cylinder. A transferring groove for transferring a single nail sleeve is arranged on the transferring block. A stop block is arranged on the opposite side of the transferring cylinder and in the transferring direction. The stop block is used to prevent the nail sleeve from detaching from the transferring groove of the transferring block during the movement of the nail sleeve along with the transferring block.

6. The intelligent local annealing device for a nail sleeve according to claim 5, characterized in that: The feeding and transferring structure further includes an opposed sensor, which includes a transmitting end and a receiving end. The transmitting end and the receiving end are respectively located in front of and behind the transferring block, and are used to detect whether there is a nail sleeve in the transferring groove of the transfer.

7. The intelligent local annealing device for a nail sleeve according to claim 1, characterized in that: The intelligent local annealing device for the nail sleeve further includes a temperature sensor for collecting the heating temperature of the nail sleeve.

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