Tool for realizing rapid positioning by utilizing edge contour of part

Abstract

The utility model belongs to the technical field of aircraft assembling and manufacturing, and relates to a tool for realizing rapid positioning by utilizing the edge contour of a part, and the part is a composite material structural part and consists of an upper-layer skin and a lower-layer plate; the tool is used for forming holes between structural part plates. The tool is composed of a drill plate (3), a drill bushing (4) and a positioning reference block (5). The drill plate (3) is of a long-strip-shaped structure and is consistent with the edge of a part, a convex lug is arranged in the middle of the drill plate (3), and the number and the positions of the drill bushings (4) are consistent with the number and the positions of connecting holes in the edge of the part. At least two positioning reference blocks (5) are respectively positioned on the two sides of the lug; a U-shaped avoiding groove is formed in the lower part of the positioning reference block (5) and is used for avoiding the edge of an upper-layer skin; the end face of the U-shaped receding groove is a positioning datum plane and is attached to the outer side face of the edge of the lower-layer plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of aircraft assembly manufacturing and relates to a tool which utilizes the edge contour of a part to realize rapid positioning. Background Art

[0002] In the aircraft manufacturing process, the proportion of composite structural parts is gradually increasing. Among them, composite bonded parts are an important component. Composite bonded parts refer to a combination of composite parts and composite parts, composite parts and metal parts formed by gluing and other forms. Due to deformation during the bonding process, in order to ensure the conformity of the part size after bonding, it is necessary to reserve trimming allowances for composite parts before bonding, and the excess on the composite parts needs to be manually cut off after curing to ensure that the design size requirements are met. The removal of metal parts in bonded parts must use cutting tools such as machine tools, so the metal parts during bonding are all net size bonded.

[0003] like Figure 1 In the example shown, the edge allowance of the composite material part on the cut-out bonded part (such as Figure 1 When the edge of the composite material is cut, the edge of the composite material is cut manually. The ... Figure 1 When drilling the normal vector position of the connection hole shown in the figure, the skin is used as the reference to draw the line to drill the hole. The accumulated error will lead to a large deviation in the final hole position and low efficiency. The current method is to design and manufacture a flat-plate drilling template. The edge of the drilling template is consistent with the contour of the skin edge. A φ2 connection hole (used to mark the hole position on the skin surface) or a drill sleeve (which can directly realize the hole drilling) is processed on the drilling template; however, due to the large error in the manual trimming of the skin edge, this will directly affect the positioning accuracy of the flat drilling template and the skin edge, thereby affecting the final connection hole position accuracy. Summary of the invention

[0004] The purpose of the utility model is to provide a tool that uses the edge contour of the part to achieve rapid positioning in order to solve the problem of accuracy in hole making and assembly of parts. The tool can directly use the edge of the metal plate with high precision under the composite skin for tool positioning, and avoid the edge of the composite skin extending above the metal plate, so as to make holes or perform other operations on the surface of the composite skin by using the drill sleeve holes on the tool. The problem of poor accuracy caused by the edge positioning of the hand-cut parts such as composite skin in the prior art is solved.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A tool for realizing rapid positioning by utilizing the edge contour of a part, wherein the part is a composite material structural part, the structural part is composed of an upper skin and a lower plate, and the edge of the upper skin exceeds the edge of the lower plate; the feature is:

[0007] The tooling is used for making holes between the upper skin and the lower plate;

[0008] The tooling consists of a drilling template 3, a drilling sleeve 4, and a positioning reference block 5; the drilling template 3 is a long strip structure, which is consistent with the edge of the part, and has a lug in the middle; the number and position of the drilling sleeve 4 are consistent with the number and position of the connecting holes on the edge of the part; the positioning reference block 5 has at least two locations, which are respectively located on both sides of the lug;

[0009] The positioning reference block 5 has a U-shaped avoidance groove at the bottom to avoid the edge of the upper skin;

[0010] The end surface of the U-shaped avoidance groove is a positioning reference surface, and the end surface is in contact with the outer side surface of the edge of the lower plate.

[0011] Preferably, in order to make the positioning more accurate, there are four positioning reference blocks 5, two of which are located on both sides of the lug, and the other two are located in the middle of the drilling template 3 on both sides of the lug.

[0012] Preferably, the positioning reference block 5 and the drilling template 3 are integrally formed.

[0013] The positioning reference block 5 and the drilling template 3 can also be formed separately and then fixedly connected.

[0014] Preferably, the positioning reference block 5 and the drilling template 3 are made of aluminum alloy;

[0015] Preferably, the lower plate material is a composite material or a metal plate.

[0016] Preferably, the drill sleeve 4 is made of high-hardness steel.

[0017] Beneficial effects of the utility model:

[0018] The tooling of the utility model utilizes the lower plate of the part as the reference surface. Since the lower plate of the part is a machined part with high machining accuracy, the method can not only improve the positioning accuracy of the tooling, but also improve the accuracy of hole making or other operations based on the tooling, and the efficiency is correspondingly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution implemented by the utility model, the following is a brief explanation of the drawings required to be used in the examples of the utility model. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the parts structure of the utility model;

[0021] Figure 2 It is a three-dimensional schematic diagram of the tooling structure of the utility model;

[0022] Figure 3 for Figure 2 Middle AA section;

[0023] In the figure, 1-composite skin, 2-metal plate, 3-drill template, 4-drill sleeve, 5-positioning reference block, 6-positioning reference surface. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] The features of various aspects of the utility model embodiment will be described in detail below. In the detailed description below, many specific details are proposed in order to fully understand the utility model. However, it is obvious to those of ordinary skill in the art that the utility model can also be implemented without these specific details. The following description of the embodiment is only for a better understanding of the utility model by illustrating the example of the utility model. The utility model is not limited to any specific settings and methods provided below, but covers all product structures, any improvements, replacements, etc. of the methods covered without departing from the spirit of the utility model.

[0026] In the various drawings and the following description, well-known structures and technologies are not shown to avoid unnecessary obscurity of the present invention.

[0027] like Figure 1 As shown, the tooling for realizing rapid positioning by utilizing the edge contour of a part of the utility model comprises a drilling template 3, a drilling sleeve 4, and a positioning reference block 5, a total of three parts.

[0028] The lower surface of the tooling is designed according to the profile that matches the part fitting surface, and a positioning reference is made on the edge of the tooling close to the composite skin and metal plate, such as Figure 2 , Figure 3 Positioning reference block 5 in.

[0029] The number of positioning reference blocks 5 should be no less than 2, and the specific number and position can be determined according to the size, deformation trend and size of the parts; a U-shaped avoidance groove is made on each positioning reference block 5 to avoid the composite skin 1 on the outside of the metal plate, and the positioning reference surface 6 on the positioning reference block 5 should conform to the contour shape of the root end face of the metal plate, and the gap value between the positioning reference surface 6 of the tooling and the root end face of the metal plate needs to be determined according to the positioning size tolerance of the connecting hole of the composite skin and the metal plate (zero gap or a certain gap reserved).

[0030] The positioning reference block 5 can be made into an integral structure with the drilling template 3, or can be made into a separate structure, and then mechanically connected using screws or the like.

[0031] The steps for using this tool are:

[0032] (1) Complete the edge allowance adjustment of parts according to manufacturing requirements.

[0033] (2) Position the drilling template 3 on the surface of the part and adjust the position of the drilling template 3 so that the bottom surface of the drilling template 3 fits with the upper surface of the composite skin 1 and the positioning reference surface 6 on the drilling template 3 fits with the root end surface of the metal plate 2.

[0034] (3) Use a bow clamp or pliers to clamp the drilling template 3 to the composite skin 1 and the metal plate 2 to ensure that the drilling template is firmly fixed.

[0035] (4) According to the drill sleeve 4 on the drilling template 3, holes are made on the composite skin 1 and the metal plate 2.

[0036] (5) After the hole is made, remove the bow clamp or pliers, take down the drilling template 3 and place it in the designated position.

[0037] The tooling of the utility model has been successfully applied in a composite material functional structural part of a certain aircraft. After using the tooling of the utility model, the hole position accuracy of the product is greatly improved, the hole making efficiency is also improved, and the purpose of shortening the entire product manufacturing cycle and improving product quality is successfully achieved, which has good social and economic benefits.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the field can easily think of various equivalent modifications or substitutions within the technical scope disclosed in the utility model, and these modifications or substitutions should be included in the protection scope of the utility model.

Claims

1. A tool for realizing rapid positioning by using the edge contour of a part, wherein the part is a composite material structural part, the structural part is composed of an upper skin and a lower plate, and the edge of the upper skin exceeds the edge of the lower plate; characterized in that: The tooling is used for making holes between the upper skin and the lower plate; The tooling consists of a drilling template (3), a drilling sleeve (4), and a positioning reference block (5); the drilling template (3) is a long strip structure, consistent with the edge of the part, and has a lug in the middle; the number and position of the drilling sleeve (4) are consistent with the number and position of the connecting holes on the edge of the part; the positioning reference block (5) has at least two locations, respectively located on both sides of the lug; The positioning reference block (5) has a U-shaped avoidance groove at the bottom to avoid the edge of the upper skin; The end surface of the U-shaped avoidance groove is a positioning reference surface, and the end surface is in contact with the outer side surface of the edge of the lower plate.

2. The tooling according to claim 1, characterized in that: The positioning reference blocks (5) have four locations, two of which are located on both sides of the lug, and the other two are located in the middle of both sides of the lug.

3. The tooling according to claim 1, characterized in that: The positioning reference block (5) and the drilling template (3) are integrally formed.

4. The tooling according to claim 1, characterized in that: The positioning reference block (5) and the drilling template (3) are separately formed and then fixedly connected.

5. The tooling according to claim 1, characterized in that: The positioning reference block (5) and the drilling template (3) are made of aluminum alloy.

6. The tooling according to claim 1, characterized in that: The lower plate material is a composite material.

7. The tooling according to claim 1, characterized in that: The lower plate is a metal plate.

8. The tooling according to claim 1, characterized in that: The drill sleeve (4) is made of high-hardness steel.

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