Glue injection mounting bushing with shoulder and aircraft assembly key part coordination drill jig

Abstract

The utility model belongs to an assembly coordination technology, and relates to a rubber injection mounting bushing with a shoulder and a coordination drill jig for airplane assembly key parts. The shoulder glue injection mounting bushing comprises a bushing body and a flange shoulder, a flange shoulder is arranged on the upper outer circle of the lining body. And symmetrical screw mounting holes are formed in the flange shoulders.

Description

Technical Field

[0001] The utility model belongs to assembly coordination technology and relates to a shouldered glue injection installation bushing and a coordinated drilling jig for key assembly parts of an aircraft. Background Art

[0002] Glue-injected mounting bushings are often used in process equipment to coordinate the hole positions between jig-type tooling parts and standard tooling. When such hole positions are used for drilling, riveting, and reaming, the glue-injected mounting bushings often fall off easily. Summary of the Invention

[0003] Purpose of the invention: To provide a simple and durable bushing and a coordinated drilling jig for key parts of aircraft assembly that ensures the stability of drilling and riveting work and meets the coordination accuracy of hole positions.

[0004] Technical Solution

[0005] In a first aspect, a shouldered glue-injected mounting bushing is provided, comprising: a bushing body, a flange shoulder;

[0006] The upper outer circle of the bushing body is provided with a flange shoulder;

[0007] Symmetrical screw mounting holes are provided on the flange shoulder.

[0008] Furthermore, the outer surface of the bushing body is provided with external threads for coordinated glue injection installation.

[0009] Furthermore, the shouldered glue-injected mounting bushing is a 30CrMn steel bushing.

[0010] Furthermore, the shoulder glue injection mounting bushing is a No. 45 steel bushing.

[0011] In a second aspect, a coordinated drilling jig for key parts of aircraft assembly is provided, comprising:

[0012] The shoulder glue injection installation bushing, drilling template, and screws according to any one of the first aspects;

[0013] The shoulder glue injection installation bushing is installed on the drilling template through screws; the inner wall of the drilling template is provided with an internal thread; and there is a gap between the internal thread and the external thread of the bushing body.

[0014] Furthermore, the gap is filled with a low melting point alloy or epoxy resin putty.

[0015] Beneficial effects:

[0016] It has a simple structure, is easy to manufacture, and has a wide range of applications. It can replace the old cylindrical bushing in most situations where standard tooling precision coordination is required. The connection with various tooling structures is more secure, ensuring assembly coordination accuracy while providing connection performance that is resistant to drilling and riveting impact, solving the problem of frequent rework for coordinated assembly of key parts of aircraft and reducing the manpower and material costs during the aircraft assembly cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of the bushing with shoulder glue injection installation.

[0018] Figure 2a It is a two-dimensional bushing with shoulder glue injection Figure 1 .

[0019] Figure 2b It is a two-dimensional diagram of the bushing with shoulder glue injection installation.

[0020] Figure 3 This is a schematic diagram of the status after the shoulder glue injection installation bushing and the drill template are glue injected.

[0021] Figure 4a A schematic diagram of the structure of a coordinated drilling jig for key parts of aircraft assembly Figure 1 .

[0022] Figure 4b This is a structural diagram of a coordinated drilling jig for key parts of aircraft assembly2.

[0023] Among them, 1-drill template, 2-shoulder glue injection installation bushing, 3-screws, 4-low melting point alloy, 5-standard tooling. DETAILED DESCRIPTION

[0024] The present invention provides a shoulder glue injection installation bushing 2, such as Figure 1 、 2a As shown in FIG2b, it includes: a bushing body 21 and a flange shoulder 22;

[0025] The upper outer circle of the bushing body is provided with a flange shoulder;

[0026] Symmetrical screw mounting holes 23 are provided on the flange shoulder.

[0027] Furthermore, the outer surface of the bushing body is provided with an external thread 24 for coordinated glue injection installation.

[0028] Furthermore, the shouldered glue-injected mounting bushing is a 30CrMn steel bushing.

[0029] Furthermore, the shoulder glue injection mounting bushing is a No. 45 steel bushing.

[0030] The present invention provides a coordinated drilling jig for key parts of aircraft assembly, such as Figure 3 、4a and 4b, including:

[0031] Install the bushing 2, drilling template 1, and screws 3 with shoulder glue injection;

[0032] The shoulder glue injection installation bushing is installed on the drilling template through screws; the inner wall of the drilling template is provided with an internal thread; and there is a gap between the internal thread and the external thread of the bushing body.

[0033] Furthermore, the gap is filled with a low melting point alloy or epoxy resin putty.

[0034] 1. The outer diameter of the shouldered glue injection installation bushing 2 adopts a threaded style and forms a gap with the threaded hole of the drilling template 1 to fill the low melting point alloy 4, which meets the general requirements of the glue injection installation process;

[0035] 2. The inner diameter of the shouldered rubber-injected bushing 2 is used as a precision hole to achieve the coordination requirements of the hole position with the corresponding standard tooling 5, and can be used with a fast drill sleeve to meet the requirements of progressive reaming;

[0036] 3. The flange of the shoulder glue-injected mounting bushing 2 is provided with two screw holes. After being fastened to the drilling template 1 by screws, the shoulder glue-injected mounting bushing 2 can be used directly as a drill sleeve and can withstand high-frequency drilling and riveting impacts, thus reducing the replacement frequency of the bushing, improving equipment utilization, and shortening the interval between tooling repairs.

[0037] 4. The outer diameter of the shoulder glue injection mounting bushing 2 can be changed from threaded to smooth, which is suitable for scenarios where epoxy resin clear glue needs to be used instead of low-melting-point alloy, and has foreseeable scalability.

Claims

1. A shoulder glue injection installation bushing, characterized in that: include: Bushing body, flange shoulder; The upper outer circle of the bushing body is provided with a flange shoulder; Symmetrical screw mounting holes are provided on the flange shoulder.

2. The bushing according to claim 1, wherein: The outer surface of the bushing body is provided with external threads for coordinated glue injection installation.

3. The bushing according to claim 1, wherein: The shouldered rubber-injected mounting bushing is a 30CrMn steel bushing.

4. The bushing according to claim 1, wherein: The shouldered rubber-injected mounting bushing is a 45-gauge steel bushing.

5. A coordinated drilling jig for key parts of aircraft assembly, characterized in that: include: The shoulder glue injection mounting bushing, drilling template, and screw according to any one of claims 1 to 4; The shoulder glue injection installation bushing is installed on the drilling template through screws; the inner wall of the drilling template is provided with an internal thread; and there is a gap between the internal thread and the external thread of the bushing body.

6. The drilling template according to claim 5, characterized in that The gap is filled with a low melting point alloy or epoxy resin putty.

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