A combined tool for curved surface positioning drilling and its use method

Abstract

The present invention belongs to the technical field of sheet metal parts forming, specifically a combination tool for curved surface positioning drilling and a method of use. An outer shape positioning plate (1), a first hole positioning card plate (2), a second hole positioning card plate (3), and a stopper (4). Compared with the prior art, the combination tool has a simple structure, and convenient and accurate drilling positioning. This avoids the investment in a large number of drilling tools, significantly reduces manufacturing costs, shortens the manufacturing cycle, and effectively ensures the efficiency and quality of curved surface drilling. The invention is not limited to curved surface drilling of long-honed parts, but can be expanded to the field of curved surface drilling of sheet metal parts with similar structural features, thereby improving drilling efficiency and reducing manufacturing costs.

Description

Technical Field

[0001] The present invention belongs to the technical field of sheet metal parts forming, and in particular relates to a combined tool for positioning and drilling holes on a curved surface and a method for using the tool. Background Art

[0002] Aircraft skin assemblies are generally assembled by riveting skin parts and long-honed parts. In order to ensure the relative assembly position of the long-honed parts and the skin parts, positioning riveting is required through mutually positioned assembly holes. Affected by the curved surface shape of the aircraft skin, the riveted surface of the long-honed parts has curved surface features, and thus the assembly holes need to be set on the curved surface of the long-honed parts. According to the traditional method, the assembly holes are first drilled on the planar parts using a flat drilling template, and then the curved surface of the parts is formed. Due to the flow of material during the curved surface forming process, the position of the assembly holes is offset and cannot meet the mutual assembly positioning requirements. If a drilling mold is used to make assembly holes, due to the large number of part types, the number of drilling molds is large, the cost is high, and the manufacturing cycle is long, which is not suitable for the development needs of the enterprise. Now there is a need for a combination tool with a simple structure, accurate positioning, and easy use to drill assembly holes on the curved surface. Summary of the Invention

[0003] The object of the present invention is to provide a combined tool which can locate and drill holes according to the surface features of parts, has a simple structure and is easy to use.

[0004] Technical Solution

[0005] A combined tool for positioning and drilling holes on a curved surface comprises: an outer shape positioning plate (1), a first hole positioning clamping plate (2), a second hole positioning clamping plate (3), and a stopper (4). The positioning outer shape (1-1) of the outer shape positioning plate (1) is consistent with the outer shape of a part; the first clamping plate position line (1-2) and the second clamping plate position line (1-3) of the outer shape positioning plate (1) are respectively the placement positions of the first hole positioning clamping plate (2) and the second hole positioning clamping plate (3); the positioning outer shape (2-1) of the first hole positioning clamping plate (2) is consistent with the cross-sectional shape of the part; the hole center line (2-2) of the first hole positioning clamping plate (2) is the center line of one of the assembly holes of the part; the cutting line (2-3) of the first hole positioning clamping plate (2) is the center line of the hole position of one of the assembly holes of the part; and the cutting line (2-4) of the first hole positioning clamping plate (2) is the center line of the hole position of the assembly hole of the part. -3) is the boundary normal line of the part cross-sectional shape, the positioning shape (3-1) of the second hole positioning card plate (3) is consistent with the cross-sectional shape of the part, the hole center line (3-2) of the second hole positioning card plate (3) is the center line of another assembly hole of the part, and the cutting line (3-3) of the second hole positioning card plate (3) is the boundary normal line of the part cross-sectional shape, two stoppers (4) are welded to the positioning plate (1), and the positioning surfaces (4-1) of the stoppers (4) are respectively flush with the first card plate position line (1-2) and the second card plate position line (1-3).

[0006] Furthermore, the first cardboard position line (1-2) and the second cardboard position line (1-3) of the outer shape positioning cardboard (1) pass through the outer shape positioning cardboard (1).

[0007] Furthermore, the length of the hole center line (2-2) of the first hole positioning card plate (2) and the hole center line (3-2) of the second hole positioning card plate (3) is 20 mm.

[0008] Furthermore, the length of the cutting line (2-3) of the first hole positioning card plate (2) and the cutting line (3-3) of the second hole positioning card plate (3) is usually 20 mm.

[0009] Furthermore, the cutting circle size on the cutting line (3-3) is φ2mm.

[0010] Furthermore, the outer shape positioning plate (1), the first hole positioning clamping plate (2), the second hole positioning clamping plate (3), and the stopper (4) are all made of stainless steel, which can meet the steelness requirements.

[0011] Furthermore, the thickness of the first hole positioning card plate (2) and the second hole positioning card plate (3) of the outer shape positioning plate (1) is 1.2 mm.

[0012] Furthermore, the four corners of the first hole positioning card plate (2) and the second hole positioning card plate (3) are chamfered to provide a safety protection and avoid scratches.

[0013] A method for using a curved surface positioning drilling assembly tool includes the following steps:

[0014] Step 1: Place the shape positioning card (1) on the surface of the part, and align the positioning shape (1-1) with the shape of the part surface;

[0015] Step 2: Place the first hole positioning card plate (2) and the second hole positioning card plate (3) on the first card plate position line (1-2) respectively

[0016] and the second pallet position line (1-3);

[0017] Step 3: Adjust the posture of the first hole positioning card plate (2) and the second hole positioning card plate (3) until the first hole positioning card plate

[0018] (2) and the side of the second hole positioning card plate (3) are fitted with the positioning surface (4-1), positioning the outer shape (2-1)

[0019] The positioning shape (3-1) fits seamlessly with the part surface, and the cutting line (2-3) and the cutting line (3-3)

[0020] Fits to the edge of the part surface;

[0021] Step 4: Get the center point of the assembly hole on the part surface through the hole center line (2-2) and the hole center line (3-2).

[0022] Then make the hole according to the center point of the hole.

[0023] Technical Effects

[0024] The present invention designs a combination tool for drilling holes on curved surfaces. Compared with existing technologies, this combination tool boasts a simple structure and convenient and accurate drilling positioning. This eliminates the need for extensive drilling tooling, significantly reducing manufacturing costs and cycle time, while effectively ensuring both efficiency and quality in drilling holes on curved surfaces. This invention is not limited to drilling holes on long-honed parts; it can be expanded to drilling holes on curved surfaces of sheet metal parts with similar structural characteristics, improving drilling efficiency and reducing manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 This is a schematic structural diagram of the shape positioning plate (1) of the present invention;

[0027] Figure 3 This is a schematic structural diagram of the first hole positioning clamping plate (2) of the present invention;

[0028] Figure 4 This is a schematic structural diagram of the second hole positioning card plate (3) of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the stopper (4) of the present invention. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the following embodiments. The following are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] The present invention is described in further detail below. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 , Figure 5The present invention comprises a positioning plate 1, a positioning card plate 2, a positioning card plate 3, and a stopper 4; the positioning shape (1-1) of the outer shape positioning card plate (1) is consistent with the outer shape of the part, and the first card plate position line (1-2) and the second card plate position line (1-3) of the outer shape positioning card plate (1) are carved according to the placement positions of the first hole positioning card plate (2) and the second hole positioning card plate (3). The stopper (4) is welded on the positioning plate (1) in a rectangular shape, and the positioning surface (4-1) is flush with the first card plate position line (1-2) and the second card plate position line (1-3) respectively. The positioning shape (2-1) of the first hole positioning card plate (2) is consistent with the cross-sectional shape of the part, the hole center line (2-2) of the first hole positioning card plate (2) is the center line of an assembly hole of the part, and the cutting line (2-3) of the first hole positioning card plate (2) is the boundary normal line of the cross-sectional shape of the part. The positioning shape (3-1) of the second hole positioning card plate (3) is consistent with the cross-sectional shape of the part, the hole center line (3-2) of the second hole positioning card plate (3) is the center line of another assembly hole of the part, and the cutting line (3-3) of the second hole positioning card plate (3) is the boundary normal line of the cross-sectional shape of the part. First, the outer shape positioning card plate (1) is placed on the surface of the part, and the outer shape (1-1) is aligned with the outer shape of the part surface. Then, the first hole positioning card plate (2) and the second hole positioning card plate (3) are placed on the first card plate position line (1-2) and the second card plate position line (1-3) respectively. The postures of the first hole positioning card plate (2) and the second hole positioning card plate (3) are adjusted until the side surfaces of the first hole positioning card plate (2) and the second hole positioning card plate (3) are aligned with the positioning surface (4-1), the positioning outer shape (2-1) and the positioning outer shape (3-1) are aligned with the part surface without a gap, and the cutting line (2-3) and the cutting line (3-3) are aligned with the edge of the part surface. Finally, the center of the assembly hole is obtained on the part surface through the hole center line (2-2) and the hole center line (3-2), and then the hole is made according to the hole center.

[0032] A first cardboard position line (1-2) and a second cardboard position line (1-3) of the outer shape positioning cardboard (1) pass through the outer shape positioning cardboard (1).

[0033] The length of the hole center line (2-2) of the first hole positioning card plate (2) and the hole center line (3-2) of the second hole positioning card plate (3) is 20 mm.

[0034] The length of the cutting line (2-3) of the first hole positioning card plate (2) and the cutting line (3-3) of the second hole positioning card plate (3) is usually 20 mm, and the size of the cutting circle is usually φ2 mm.

[0035] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical terms and scientific terms) have the same meaning as generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have a meaning consistent with that in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as herein. The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A combined tool for curved surface positioning drilling, characterized in that: It includes an outer shape positioning plate, a first hole positioning card plate, a second hole positioning card plate, and a stopper; the positioning outer shape of the outer shape positioning plate is consistent with the outer shape of the part, the first card plate position line and the second card plate position line of the outer shape positioning plate are respectively the placement positions of the first hole positioning card plate and the second hole positioning card plate, the positioning outer shape of the first hole positioning card plate is consistent with the cross-sectional outer shape of the part, the hole center line of the first hole positioning card plate is the center line of one of the assembly hole positions of the part, and the cutting line of the first hole positioning card plate is the normal line of the boundary of the cross-sectional outer shape of the part, the positioning outer shape of the second hole positioning card plate is consistent with the cross-sectional outer shape of the part, the hole center line of the second hole positioning card plate is the center line of another assembly hole position of the part, and the cutting line of the second hole positioning card plate is the normal line of the boundary of the cross-sectional outer shape of the part, and two stoppers are welded on the positioning plate, and the positioning surfaces of the stoppers are flush with the first card plate position line and the second card plate position line respectively.

2. A combined tool for curved surface positioning drilling according to claim 1, characterized in that: The first card plate position line and the second card plate position line of the outer shape positioning card plate pass through the outer shape positioning card plate.

3. The combined tool for curved surface positioning drilling according to claim 1, characterized in that: The length of the center line of the hole of the first hole positioning card plate and the center line of the hole of the second hole positioning card plate is 20 mm.

4. The combined tool for curved surface positioning drilling according to claim 1, characterized in that: The length of the cutting line of the first hole positioning card plate and the cutting line of the second hole positioning card plate is 20 mm.

5. The combined tool for curved surface positioning drilling according to claim 4, characterized in that: The cutting circle size on the cutting line of the second hole positioning clamping plate is φ2mm.

6. The combined tool for curved surface positioning drilling according to claim 1, characterized in that: The outer shape positioning plate, the first hole positioning clamping plate, the second hole positioning clamping plate and the stop block are all made of stainless steel.

7. The combined tool for curved surface positioning drilling according to claim 1, characterized in that: The thickness of the outer shape positioning plate, the first hole positioning card plate, and the second hole positioning card plate are all 1.2 mm.

8. The combined tool for curved surface positioning drilling according to claim 1, characterized in that: The four sharp corners of the first hole positioning clamping plate and the second hole positioning clamping plate are all chamfered.

9. The method for using the tool according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Place the shape positioning card on the surface of the part, and align the positioning shape with the surface shape of the part; Step 2: Place the first hole positioning card plate and the second hole positioning card plate on the first card plate position line and the second card plate position line respectively; Step 3: Adjust the posture of the first hole positioning card plate and the second hole positioning card plate until the side surfaces of the first hole positioning card plate and the second hole positioning card plate are in contact with the positioning surface, the positioning shape of the first hole positioning card plate and the positioning shape of the second hole positioning card plate are in contact with the part surface without gaps, and the cutting line of the first hole positioning card plate and the cutting line of the second hole positioning card plate are in contact with the edge of the part surface; Step 4: Obtain the center point of the assembly hole on the part surface through the hole center line of the first hole positioning card plate and the hole center line of the second hole positioning card plate, and then make holes according to the hole center points.

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