A tooling and method for preventing paint peeling during the locking process of a painted fairing.

Abstract

This invention discloses a tooling and method for preventing paint peeling during the puncture and locking process of a painted fairing. The tooling includes a support base, bolts, nuts, rubber pads, and rubber sleeves. The support base is used to limit the fairing's position and reduce vibration during puncture, thereby preventing paint peeling from the fairing surface. The bolts are used to transfer the impact force on the fairing to the support base during puncture, reducing fairing vibration. The nuts prevent the bolts from rotating. The rubber sleeves isolate the bolts from the fairing, preventing damage to the holes on the fairing by gravity and puncture pressure. The rubber pads isolate the support base from the fairing, preventing damage to the paint on the contact surface by gravity and puncture pressure. This invention solves the problem of paint peeling off the outer surface of the fairing due to the huge impact vibration during puncture and locking.

Description

Technical Field

[0001] This invention belongs to the field of aero-engine manufacturing technology, specifically relating to the design of a tooling and method for preventing paint peeling during the locking process of a painted fairing. Background Technology

[0002] Aircraft engine cowlings are used to regulate airflow, reduce flight drag, and play a crucial role in protecting core components. Cowlings often employ a streamlined design to ensure smooth airflow. Bushings connect the bolts to the cowling openings, and these bushings are secured to the openings using a punch-locking method. However, the significant impact and vibration during the punch-locking process causes paint peeling off the outer surface of the cowling. Therefore, it is necessary to design a tooling system to prevent paint peeling during the cowling punch-locking process and to achieve the goal of preventing paint peeling after punch-locking. Summary of the Invention

[0003] The present invention aims to provide a tooling and method for preventing paint peeling during the punching and locking process of a painted fairing, thereby solving the problem of paint peeling off the outer surface of the fairing due to the huge impact and vibration during the punching and locking process.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A tooling for preventing paint peeling during the locking process of a painted fairing, comprising:

[0006] The support base has a hole at its upper end for accommodating the fairing, and a supporting surface around the hole with the hole as the center.

[0007] A rubber pad is disposed between the outer surface of the fairing and the supporting surface of the support base;

[0008] A bolt, one end of which is threaded to the non-supporting surface of the upper end of the support base, and the other end of which passes through the hole on the fairing and fits against the end face of the bolt inside the bushing of the upper punch locking bushing of the fairing.

[0009] A nut, which is fitted onto the bolt and pressed against the non-supporting surface of the upper end of the support base:

[0010] A rubber sleeve is fitted onto a bolt, and the fitting position is located at the contact point between the bolt and the fairing.

[0011] As one option, the support surface of the support base is consistent with the outer contour of the fairing.

[0012] As one embodiment, the support base includes:

[0013] The upper support ring is an integral circular ring, with the inner ring surface forming a support surface and the upper end surface forming a non-support surface.

[0014] The lower support ring is a single, integral circular ring.

[0015] The lower end of the support column is fixed to the upper end face of the lower support ring, and the upper end of the support column is connected to the upper support ring. Multiple support columns are distributed at intervals along the same circumference of the upper end face of the lower support ring.

[0016] A method for preventing paint peeling during the locking process of a painted fairing, comprising:

[0017] During the sprinting process, the impact vibration between the fairing and the sprinting locking bushing is transmitted to other structures through the bolts inside the bushing.

[0018] Furthermore, the method to prevent paint from falling off during the locking process of the painted fairing also includes: before the locking process, the fairing is positioned on a fixture by its own weight and outer surface contour, and a buffer material is set between the fixture and the painted surface of the fairing. Then, a connector for transmitting impact vibration is led out from the fixture and fits against the end face of the bolt inside the bushing.

[0019] As an alternative, the above-mentioned tooling is used to prevent paint peeling during the stamping and locking process of the painted fairing, and includes:

[0020] Place the fairing into the hole at the top of the support base with the smaller outer diameter end facing down, ensuring that the paint on the fairing is completely in contact with the rubber pad. At the same time, ensure that the upper end of the bolt passes through the fairing and is in contact with the lower end of the bolt inside the bushing. Tighten the nut to ensure that the bolt has no excessive movement. Confirm that the rubber sleeve completely fills the contact surface between the bolt and the fairing. Finally, begin the punching operation on the fairing and the punching locking bushing one by one.

[0021] Compared with the prior art, the tooling and method of the present invention have the following characteristics:

[0022] 1) The present invention designs a set of anti-vibration paint-scraping tooling during the fairing punching and locking process, which avoids paint scraping on the fairing surface during the punching and locking process.

[0023] 2) The method and tooling of the present invention avoid the need for manual hand-holding to fix the fairing during use, thus reducing the workload of workers.

[0024] 3) The tooling of the present invention is simple, practical and low in cost, and easy to replicate in similar punching assembly scenarios. There are no special requirements for the material of the support base and bolts. Ordinary metal materials or other materials with certain hardness and strength are acceptable. Attached Figure Description

[0025] Figure 1 This is a schematic diagram showing the fairing assembled in the tooling.

[0026] In the diagram: 1-support base, 2-bolt, 3-nut, 4-rubber sleeve, 5-rubber pad, 6-fairing, 7-punch point locking bushing, 8-inner bolt of bushing. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments, but it should not be construed as limiting the scope of the subject matter of the present invention to the following embodiments. All modifications, substitutions and alterations made based on ordinary technical knowledge and common practices in the art without departing from the above-described technical concept of the present invention are included within the scope of the present invention.

[0028] like Figure 1 As shown, this invention provides a tooling for preventing paint peeling during the locking process of a painted fairing, comprising the following components:

[0029] The support base 1 is used to limit the fairing 6 and reduce the vibration of the fairing 6 at the buffer point, thereby preventing the paint on the surface of the fairing 6 from peeling off.

[0030] Bolt 2 is used to transfer the impact force on fairing 6 to support base 1 during punching, thereby reducing the vibration of fairing 6 during punching.

[0031] Nut 3 is used to prevent bolt 2 from rotating.

[0032] Rubber sleeve 4 is used to separate bolt 2 from fairing 6 to prevent damage to the holes on fairing 6 by gravity and impact.

[0033] Rubber pad 5 is used to isolate the support base 1 from the fairing 6, preventing gravity and impact pressure from damaging the paint on the contact surface.

[0034] like Figure 1 As shown, the punch locking area is located between the fairing 6 and the punch locking bushing 7, i.e. Figure 1 The figure shows reference numerals 601 (701) in the attached diagram. During punching, the fairing 6 is restrained by the support base 1 and the rubber pad 5 to avoid manual intervention. The impact force of the punching on the fairing 6 is transmitted to the support base 1 through the bushing bolts 8 and 2, and then to the worktable, reducing the impact force on the fairing 6 and preventing paint peeling. The tooling designed in this invention is simple to use, low in cost, and easy to replicate in similar punching assembly scenarios.

[0035] Contents not described in detail in this specification are prior art known to those skilled in the art. Although illustrative specific embodiments of the invention have been described above to facilitate understanding by those skilled in the art, it should be understood that the invention is not limited to the scope of the specific embodiments. Various modifications are readily apparent to those skilled in the art as long as they fall within the spirit and scope of the invention as defined and determined by the appended claims, and all inventions utilizing the concept of this invention are protected.

Claims

1. A tooling for preventing paint peeling during the locking process of a painted fairing, characterized in that, include: Support base (1), the upper end of the support base (1) has a hole for accommodating the fairing (6), and there is a support surface around the hole with the hole as the center. The support surface of the support base (1) is consistent with the outer contour of the fairing (6). The support base (1) includes an upper support ring, which is an integral ring. The inner ring surface of the ring forms the support surface, and the upper end surface of the ring forms the non-support surface. A rubber pad (5) is disposed between the outer surface of the fairing (6) and the support surface of the support base (1); Bolt (2), one end of the bolt (2) is threaded to the non-support surface of the upper end of the support base (1), and the other end of the bolt (2) passes through the hole on the fairing (6) and fits against the end face of the bolt (8) inside the bushing of the punch locking bushing (7) on the fairing (6); Nut (3), which is fitted onto bolt (2) and pressed against the non-supporting surface of the upper end of support base (1): A rubber sleeve (4) is fitted onto a bolt (2), and the fitting position is between the bolt (2) and the fairing (6).

2. The tooling for preventing paint peeling during the locking process of a painted fairing according to claim 1, characterized in that, The support base (1) also includes: The lower support ring is a single, integral circular ring. The lower end of the support column is fixed to the upper end face of the lower support ring, and the upper end of the support column is connected to the upper support ring. Multiple support columns are distributed at intervals along the same circumference of the upper end face of the lower support ring.

3. A method for preventing paint peeling during the locking process of a painted fairing, characterized in that, The tooling described in claim 1 is used, and includes: Place the fairing (6) into the hole at the top of the support base (1) with the smaller outer diameter end facing down, and ensure that the paint surface of the fairing (6) is completely in contact with the rubber pad (5). At the same time, ensure that the upper end of the bolt (2) passes through the fairing (6) and is in contact with the lower end of the bolt (8) inside the bushing. Tighten the nut (3) to ensure that the bolt (2) has no excessive movement. Confirm that the rubber sleeve (4) completely fills the contact surface between the bolt (2) and the fairing (6). Finally, start to perform the punching operation on the fairing (6) and the punching locking bushing (7) one by one.

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