Tool and method for preventing paint from falling off in punching point locking process of painted fairing

Abstract

The invention discloses a tool and method for preventing paint from falling off in the punching point locking process of a painted fairing. The tool comprises a supporting base, a bolt, a nut, a rubber pad and a rubber sleeve. The supporting seat is used for limiting the fairing, vibration of the fairing during point punching is relieved, and therefore paint on the surface of the fairing is prevented from falling off. The bolts are used for transmitting impact force borne by the fairing to the supporting base during punching, and vibration of the fairing during punching is reduced. The nut is used for preventing the bolt from rotating. The rubber sleeve is used for isolating the bolt and the fairing, and hole sites in the fairing are prevented from being damaged by gravity and stamping force. The rubber pad is used for isolating the supporting seat from the fairing and preventing gravity and stamping force from damaging paint on the contact face. The problem that paint on the outer surface of the fairing falls off due to huge impact vibration in the impact point locking process is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of aeroengine manufacturing, and particularly relates to a design of a paint-shedding prevention tooling during a point-locking process of a painted fairing and a paint-shedding prevention method. Background Art

[0002] Aircraft engine fairings are used to adjust airflow, reduce flight resistance, and play an important role in protecting core components. Fairings often adopt a streamlined design to ensure smooth airflow. A bushing is connected between the bolts and the fairing holes, and the bushing and the fairing holes are fixed by a punching point locking method. Due to the large impact and vibration during the punching process, the paint on the outer surface of the fairing falls off. Based on the above problems, it is necessary to design a tool to prevent paint from falling off during the locking process of the fairing punching point and achieve the purpose of no paint falling off after the fairing punches through the tool. Summary of the invention

[0003] The present invention aims to provide a tool and method for preventing paint from falling off during the point-locking process of a painted fairing, so as to solve the problem of paint falling off on the outer surface of the fairing due to huge impact vibration during the point-locking process.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A tool for preventing paint from falling off during the point locking process of a painted fairing, comprising:

[0006] A support seat, wherein the upper end of the support seat is provided with a hole for accommodating the fairing, and a circle of support surfaces centered on the hole is formed outside the hole;

[0007] A rubber pad, the rubber pad being arranged between the outer surface of the fairing and the supporting surface of the supporting seat;

[0008] A bolt, one end of which is threadedly connected to the non-supporting surface of the upper end of the support seat, and the other end of which penetrates through the hole on the fairing and fits with the end face of the bolt in the bushing in the punch point locking bushing on the fairing;

[0009] Nut, the nut is sleeved on the bolt and pressed against the non-supporting surface of the upper end of the support seat:

[0010] The rubber sleeve is sleeved on the bolt, and the sleeved position is between the contact position between the bolt and the fairing.

[0011] As a solution, the support surface of the support seat is consistent with the outer profile of the fairing.

[0012] As a solution, the support base includes:

[0013] An upper support ring, wherein the upper support ring is an integral circular ring, the inner ring surface of the circular ring forms a support surface, and the upper end surface of the circular ring forms a non-support surface;

[0014] A lower support ring, wherein the lower support ring is an integral circular ring;

[0015] The support column has its lower end fixed to the upper end surface of the lower support ring, and its upper end is connected to the upper support ring. A plurality of support columns are spaced and distributed along the same circumference of the upper end surface of the lower support ring.

[0016] A method for preventing paint from falling off during the point locking process of a painted fairing, comprising:

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

[0018] Furthermore, the method for preventing paint from falling off during the locking process of the painted fairing during the punching point locking process also includes: before punching, the fairing is first positioned on a fixture using its own weight and the contour of the outer surface, and a buffer material is arranged between the fixture and the paint surface of the fairing, and then a connecting piece for transmitting impact vibration is led out from the fixture and fits with the end face of the bolt in the bushing.

[0019] As an option, the method for preventing paint from falling off during the point locking process of the painted fairing adopts the above-mentioned tooling and includes:

[0020] Place the fairing into the hole at the upper end of the support seat with the small outer diameter end facing downward, and the paint surface of the fairing is completely in contact with the rubber pad. At the same time, ensure that the upper end of the bolt penetrates the fairing and fits with the lower end surface of the bolt in the bushing. Tighten the nut to ensure that there is no excess swing of the bolt. Confirm that the rubber sleeve completely fills the contact surface between the bolt and the fairing. Finally, start 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 vibration-proof paint-shedding tooling during the locking process of the fairing punching points, thereby preventing the paint from falling off the surface of the fairing during the locking process of the punching points.

[0023] 2) During use, the method and tooling of the present invention avoid the need to manually fix the fairing, thereby reducing the workload of workers.

[0024] 3) The tooling of the present invention is simple, practical, and low-cost, and can be easily replicated in similar punching point assembly scenarios. There are no special requirements for the materials of the support seat and the bolts, and ordinary metal materials or other materials with a certain hardness and strength can be used. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the state of the fairing being assembled in the tooling;

[0026] In the figure: 1-support seat, 2-bolt, 3-nut, 4-rubber sleeve, 5-rubber pad, 6-fairing, 7-punch point locking bushing, 8-bushing inner bolt. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with specific embodiments, but it should not be understood that the scope of the subject matter described in the present invention is limited to the following embodiments. Without departing from the above-mentioned technical ideas of the present invention, various modifications, substitutions and changes made according to common technical knowledge and customary means in the field are included in the scope of the present invention.

[0028] like Figure 1 As shown, a tooling for preventing paint from falling off during the point locking process of a painted fairing designed by the present invention comprises the following components:

[0029] The support seat 1 is used to limit the position of the fairing 6 and reduce the vibration of the fairing 6 during the buffering point, thereby preventing the paint on the surface of the fairing 6 from falling off.

[0030] The bolt 2 is used to transfer the impact force of the fairing 6 to the support seat 1 when punching the points, so as to reduce the vibration of the fairing 6 when punching the points.

[0031] The nut 3 is used to prevent the bolt 2 from rotating.

[0032] The rubber sleeve 4 is used to isolate the bolt 2 from the fairing 6 to prevent the holes on the fairing 6 from being damaged by gravity and impact force.

[0033] The rubber pad 5 is used to isolate the support seat 1 and the fairing 6 to prevent gravity and impact force from damaging the paint on the contact surface.

[0034] like Figure 1 As shown, the impact point locking area is located between the fairing 6 and the impact point locking bushing 7, that is, Figure 1 At 601 (701) in the accompanying drawings. When punching, the fairing 6 is limited by the support seat 1 and the rubber pad 5 to avoid manual support. The impact force of the punching point on the fairing 6 is transmitted to the support seat 1 through the bolts 8 and the bolts 2 in the bushing and then to the workbench, thereby reducing the impact force on the fairing 6 and preventing paint from falling off. The tooling designed by the present invention is simple and easy to use, low in cost, and easy to copy to similar punching point assembly scenarios.

[0035] The contents not described in detail in the specification of the present invention belong to the prior art known to the professional and technical personnel in the field. Although the illustrative specific embodiments of the present invention are described above to facilitate the understanding of the present invention by the technical personnel in the field, it should be clear that the present invention is not limited to the scope of the specific embodiments. For ordinary technicians in the field of this technology, as long as various changes are within the spirit and scope of the present invention defined and determined by the attached claims, these changes are obvious, and all inventions and creations using the concept of the present invention are protected.

Claims

1. A tool for preventing paint from falling off during the point locking process of a painted fairing, characterized in that: include: A support seat (1), wherein the upper end of the support seat (1) is provided with a hole for accommodating the fairing (6), and a circle of supporting surfaces centered on the hole is formed outside the hole; A rubber pad (5), wherein the rubber pad (5) is arranged between the outer surface of the fairing (6) and the supporting surface of the supporting seat (1); A bolt (2), one end of the bolt (2) is threadedly connected to the non-supporting surface of the upper end of the support seat (1), and the other end of the bolt (2) penetrates the hole on the fairing (6) and fits with the end face of the bolt (8) in the bushing locking bushing (7) on the fairing (6); The nut (3) is sleeved on the bolt (2) and pressed against the non-supporting surface of the upper end of the support seat (1): A rubber sleeve (4) is sleeved on the bolt (2), and the sleeved position is between the contact point between the bolt (2) and the fairing (6).

2. The tooling for preventing paint from falling off during the point locking process of a painted fairing according to claim 1 is characterized in that: The supporting surface of the supporting seat (1) is consistent with the outer profile of the fairing (6).

3. The tooling for preventing paint from falling off during the point locking process of a painted fairing according to claim 1 is characterized in that: The support base (1) comprises: An upper support ring, wherein the upper support ring is an integral circular ring, the inner ring surface of the circular ring forms a support surface, and the upper end surface of the circular ring forms a non-support surface; A lower support ring, wherein the lower support ring is an integral circular ring; The support column has its lower end fixed to the upper end surface of the lower support ring, and its upper end is connected to the upper support ring. A plurality of support columns are spaced and distributed along the same circumference of the upper end surface of the lower support ring.

4. A method for preventing paint from falling off during the point locking process of a painted fairing, characterized in that: include: During the punching process, the impact vibration between the fairing (6) and the punching locking bushing (7) is transmitted to other structures through the bushing inner bolt (8).

5. A method for preventing paint from falling off during the point locking process of a painted fairing according to claim 4, characterized in that: Also includes: Before the impact point is struck, the fairing (6) is positioned on a fixture by utilizing its own weight and the contour of its outer surface, and a buffer material is arranged between the fixture and the paint surface of the fairing (6). Then, a connecting piece for transmitting impact vibration is led out from the fixture and fits with the end surface of the bolt (8) in the bushing.

6. A method for preventing paint from falling off during the point locking process of a painted fairing according to claim 4, characterized in that: The tooling according to claim 1 is used, and comprises: Place the fairing (6) into the hole at the upper end of the support seat (1) for accommodating the fairing (6) with the small outer diameter end facing downward, 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) penetrates the fairing (6) and fits with the lower end surface of the bolt (8) in the bushing. Tighten the nut (3) to ensure that there is no unnecessary shaking of the bolt (2). 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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