Closed-angle area core-pulling rivet riveting device

Abstract

The utility model belongs to the field of airplane riveting assembly, and particularly relates to a blind rivet riveting device in a closed angle area. Power of a traditional core-pulling pull head is transmitted by a hydraulic mechanism, so that the traditional core-pulling pull head is inconvenient to carry and relatively complicated in maintenance process. The core-pulling device comprises a core-pulling shell, a screw and a sleeve which are sequentially connected from front to back, wherein a core-pulling pull head is mounted in the core-pulling shell; the screw is provided with a shaft hole, and a transmission shaft with external threads penetrates through the sleeve and the screw and then enters the core-pulling shell to provide core-pulling pulling force for the core-pulling pull head. The device is simple in structure, convenient to use and capable of achieving single-person rapid operation, and the man-machine effect and the production efficiency are greatly improved. And damage to airplane parts in the mounting process can be avoided. And the convenience of troubleshooting of an external factory is improved, and the riveting manpower, the labor hour cost and the tool maintenance cost are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft riveting and assembly, specifically relating to a closed-angle area core-pulling riveting device. Background Technology

[0002] During the riveting and assembly of various aircraft components, blind rivets are used extensively as standard parts for connecting the main fuselage structure, especially in closed-angle areas and composite material skin areas. The main tool for installing blind rivets is a blind rivet gun, which works by using a hydraulic mechanism to drive airflow and pull out the "core" of the blind rivet through a pull head. In the process of pulling out the "core", the blind rivet forms a upset head.

[0003] Traditional core-pulling heads are powered by a hydraulic mechanism, which makes core-pulling rivet guns generally heavy and inconvenient to carry. They are often difficult to operate in "closed-angle" areas and are also inconvenient to carry during troubleshooting at aircraft factories. Furthermore, due to the hydraulic transmission, the hydraulic oil needs to be changed regularly, making the maintenance process relatively complicated. Utility Model Content

[0004] This invention addresses the problems of traditional hydraulic blind rivet guns, such as their generally heavy weight, inconvenience in carrying, extreme difficulty in operation in "closed-angle" areas, low product installation quality, difficulty in taking out-of-house troubleshooting equipment, and the need for regular hydraulic oil changes, resulting in complex and costly maintenance. It proposes a blind rivet riveting device for closed-angle areas, replacing the traditional hydraulic blind rivet gun. This device can be connected to a pneumatic drill and cleverly utilizes the tensile force transmission during the blind rivet riveting process through threaded engagement.

[0005] This utility model proposes a closed-angle area core-pulling riveting device, which includes a core-pulling housing, a screw and a sleeve connected in sequence from front to back. A core-pulling head is installed in the core-pulling housing. The screw has a shaft hole, and a drive shaft with external threads passes through the sleeve and the screw and enters the core-pulling housing to provide core-pulling force to the core-pulling head.

[0006] Advantageously, the core-pulling housing has a lead screw nut, the front end of which is fixedly connected to the core-pulling head, and the threaded hole at the rear end is threadedly connected to the drive shaft.

[0007] Advantageously, a coaxial positioning head and a slidable conical head are mounted on the core-pulling housing, and the top of the core-pulling head has an annular hole that fits onto the conical head.

[0008] Advantageously, the conical head is pressed against the annular hole by the action of the spring.

[0009] Advantageously, the sliding direction of the conical head is parallel to the drive shaft.

[0010] Advantageously, the screw includes a head and a threaded shank, and a locking nut is also mounted on the outside of the screw.

[0011] Advantageously, the drive shaft is mounted in a sleeve via bearings.

[0012] Beneficial effects:

[0013] 1. This utility model has good usability and applicability, simple structure, and convenient use. It can be operated quickly by a single person, greatly improving human-machine efficiency and production efficiency. The installation cycle is shortened from the original 2.5 days to 0.5 days, which can improve work efficiency by 8%.

[0014] 2. Effectively improves the operational efficiency and installation quality of the closed-angle area of ​​the product. The pass rate of the blind rivets installed using this solution has been increased from 75% to over 95%, which can reduce the scrap rate, rework rate and riveting difficulty in the closed-angle area caused by poor installation quality, and at the same time avoid damage to aircraft parts during the installation process.

[0015] 3. Improve the ease of troubleshooting at external factories and reduce riveting manpower, time costs, and tool maintenance costs.

[0016] The features, functionalities, and advantages already discussed can be implemented independently in various examples, or combined in other examples. Further details of the examples can be seen in the following description and accompanying figures. Attached Figure Description

[0017] When read in conjunction with the accompanying drawings, the embodiments, preferred modes of use, other objects, and descriptions thereof will be best understood by referring to the following detailed description of the embodiments of the present invention, wherein:

[0018] Figure 1 A schematic diagram of the overall structure connecting the core-pulling riveting device in the closed-angle region to the pneumatic drill.

[0019] Figure 2 for Figure 1 A magnified partial sectional view;

[0020] Figure 3 Main view of the operation of this utility model Figure 3 for

[0021] 1—Sleeve; 2—Drive shaft; 3—Screw; 4—Locking nut; 5—Bearing; 6—Core pull housing; 7—Core pull head; 8—Positioning head; 9—Lead screw nut; 10—Conical head; 11—Spring Detailed Implementation

[0022] The disclosed examples will be described more fully with reference to the accompanying drawings, in which some (but not all) of the disclosed examples are shown. In fact, many different examples may be described, and these examples should not be construed as limited to those set forth herein. Rather, these examples are described so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0023] See Figure 1 The closed-angle area pop rivet device mainly includes a sleeve 1, a drive shaft 2, a nut 3, a locking nut 4, a bearing 5, a pop rivet housing 6, and a pop rivet pull head 7. Among them, the drive shaft 2 is installed in the sleeve 1 through the bearing 5. The drive shaft 2 has external threads and its outer end is connected to the pneumatic drill, changing the working mode of the original pop rivet gun.

[0024] See Figure 2 The sleeve 1 has a countersunk screw hole at its front end, which connects to the screw 3. A locking nut 4 is also installed on the outside of the screw 3. The inner end of the screw 3 is fixedly connected to the core-pulling housing 6. The screw 3 has a shaft hole, through which the front end of the drive shaft 2 passes into the core-pulling housing 6. The core-pulling housing 6 contains a core-pulling head 7 and a positioning head 8.

[0025] See Figure 3 and Figure 4 The front end of the drive shaft 2 is connected to the threaded hole at the rear end of the lead screw nut 9. The front end of the lead screw nut 9 is fixedly connected to the core pull head 7. The core pull head 7 has an annular hole at its top end, and the positioning head 8 is installed at the front end of the annular hole. A slidable conical head 10 is installed on the top of the core pull housing 6. The sliding direction is parallel to the drive shaft 2, and it is pressed against the annular hole under the action of the spring 11.

[0026] During operation, the drive shaft 2 is connected to the chuck on the pneumatic drill 6. The pneumatic drill 6 can rotate in both forward and reverse directions to make the drive shaft 2 rotate relative to the lead screw nut 9, thereby realizing the forward and reverse feed of the core-pulling head 7 and completing the formation of the core-pulling nail head.

[0027] Descriptions of various advantageous arrangements have been shown for illustrative and descriptive purposes, but such descriptions are not intended to be exclusive or limited to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. Furthermore, different advantageous examples may be described as having different advantages compared to other advantageous examples. One or more examples have been selected and described in order to best illustrate the principles and practical applications of the examples, and to enable those skilled in the art to understand that this disclosure contains various examples with various modifications suitable for the particular intended use.

Claims

1. A closed-angle region core-pulling riveting device, characterized in that: The device includes a core-pulling housing (6), a screw (3) and a sleeve (1) connected in sequence from front to back. A core-pulling head (7) is installed in the core-pulling housing (6). The screw (3) has a shaft hole. A drive shaft (2) with external threads passes through the sleeve (1) and the screw (3) and enters the core-pulling housing (6) to provide core-pulling force to the core-pulling head (7).

2. The closed-angle region core-pulling riveting device according to claim 1, characterized in that: The core-pulling housing (6) contains a lead screw nut (9), the front end of which is fixedly connected to the core-pulling head (7), and the threaded hole at the rear end is threadedly connected to the drive shaft (2).

3. The closed-angle region core-pulling riveting device according to claim 2, characterized in that: A coaxial positioning head (8) and a slidable conical head (10) are installed on the core-pulling housing (6), and the top end of the core-pulling head (7) has an annular hole that fits onto the conical head (10).

4. The closed-angle region core-pulling riveting device according to claim 3, characterized in that: The conical head (10) is pressed against the annular hole by the action of the spring (11).

5. The closed-angle region core-pulling riveting device according to claim 3, characterized in that: The sliding direction of the conical head (10) is parallel to the drive shaft (2).

6. The closed-angle region core-pulling riveting device according to claim 1, characterized in that: The screw (3) includes a head and a threaded shank, and a locking nut (4) is also installed on the outside of the screw (3).

7. The closed-angle region core-pulling riveting device according to claim 1, characterized in that: The drive shaft (2) is mounted in the sleeve (1) via the bearing (5).

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