A blind hole machining device for aerospace parts

Abstract

This application discloses a blind hole machining device for aerospace components, comprising: a bracket with a rectangular frame structure for providing support; a fixed plate with its first end fixedly connected to the end of the bracket; a pin detachably connected to the second end of the fixed plate; a movable plate with its first end slidingly engaged with the inner side of the fixed plate; a guide plate detachably connected to the second end of the movable plate, having a guide hole in its center, and the guide hole being coaxial with the pin; a guide post with both ends fixedly connected to the bracket, the movable plate having through holes for the guide post to pass through, the guide post being configured to guide the movement of the movable plate; and a positioning unit capable of securing the first end of the movable plate. This application overcomes the industry challenge of coaxiality control in blind hole machining of aerospace components through innovative designs such as cross-side guidance and modular adaptation, combining high precision, high versatility, and ease of operation, providing efficient and reliable process equipment support for aerospace manufacturing.

Description

Technical Field

[0001] This application relates to the field of blind hole machining technology, and in particular to a blind hole machining apparatus for aerospace components. Background Technology

[0002] In the machining of blind holes for aerospace components, traditional machining methods often face the challenge of failing to meet the demands of high-precision manufacturing. This is particularly true when drilling coaxial holes using existing blind holes as a reference. Because the target hole and the reference blind hole are located on opposite sides of the workpiece in a semi-enclosed space, conventional drilling devices cannot provide cross-side guidance. Furthermore, the positional characteristics of the existing blind hole as a reference hole prevent the direct establishment of coaxiality constraints on the target side, making it difficult to meet coaxiality requirements using traditional drilling processes.

[0003] Such cross-axial drilling problems are common in the aerospace field, for example, in the assembly of complex structural components or multi-layered laminates. Due to the inaccessibility of the reference blind hole (e.g., obstructed by other structures or limited space), the guiding structure of existing drilling devices cannot extend to the blind hole side, leading to frequent problems such as drilling trajectory deviation and coaxiality misalignment. Therefore, developing a novel drilling device that can overcome spatial limitations and achieve cross-axial guidance has become a pressing technical challenge. Summary of the Invention

[0004] The purpose of this application is to provide a blind hole machining device for aerospace parts to solve the above problems. Through innovative designs such as cross-side guidance and modular adaptation, it overcomes the industry problem of coaxiality control in blind hole machining of aerospace parts. It has high precision, high versatility and convenient operation, and provides efficient and reliable process equipment support for aerospace manufacturing.

[0005] This application achieves the above objectives through the following technical solutions:

[0006] A blind hole machining device for aerospace components includes: a bracket with a rectangular frame structure for providing support; a fixed plate with its first end fixedly connected to the end of the bracket; a pin detachably connected to the second end of the fixed plate; a movable plate with its first end slidingly engaged with the inner side of the bracket; a guide plate detachably connected to the second end of the movable plate, having a guide hole in its center, and the guide hole being coaxial with the pin; a guide post with both ends fixedly connected to the bracket, the movable plate having through holes for the guide post to pass through, the guide post being configured to guide the movement of the movable plate; and a positioning unit capable of securing the first end of the movable plate.

[0007] In some embodiments, the guide plate is provided with external threads, and the second end of the movable plate is provided with a screw hole adapted to the guide plate, and the guide plate is screwed to the screw hole; the end of the insertion post is fixedly connected with a stud, and the stud is screwed to the second end of the fixed plate.

[0008] In some embodiments, the positioning unit includes: a traction block that slides with the bracket; a connecting seat that is fixedly connected to the movable plate; and a tension spring that is connected at both ends to the connecting seat and the traction block to be able to pull the traction block.

[0009] In some embodiments, a rack is provided on the support along its length, and a locking tooth is provided on the traction block to match the rack so that the two can mesh.

[0010] In some embodiments, a flange is fixedly provided on one end edge of the screw hole to limit the guide plate.

[0011] In some embodiments, the positioning unit further includes a slide rod, one end of which is fixedly connected to the traction block, and the other end of which passes through the connecting seat, with the rod body slidingly fitted to the connecting seat.

[0012] In some embodiments, a handle is fixedly provided on the traction block to facilitate pulling the traction block.

[0013] In some embodiments, there are at least two guide posts, the length of which extends along the length of the support.

[0014] Compared to existing technologies, this application improves the accuracy of cross-axial machining through a reference blind hole guide design. The coaxial fit between the insert and the guide plate enables cross-axial positioning of the reference blind hole and the hole to be machined. After the insert is inserted into the machined blind hole, the guide hole of the guide plate is coaxial with the insert, ensuring that the drill bit trajectory completely coincides with the reference hole, significantly improving coaxiality accuracy and meeting the high-precision requirements of aerospace components. The modular design allows the insert to be screwed to the fixed plate via studs, and the guide plate to be connected to the movable plate via threads, supporting quick replacement of inserts and guide holes of different diameters and adapting to various blind hole specifications. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the following detailed description to explain the present application, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a first structural schematic diagram of this application;

[0017] Figure 2 This is a second structural schematic diagram of this application;

[0018] Figure 3 This is an exploded structural diagram of the insert and guide plate in this application;

[0019] Figure 4 This is a schematic diagram of the tension spring structure of this application.

[0020] The annotations in the attached figures are explained as follows:

[0021] 1. Bracket; 2. Fixing plate; 3. Movable plate; 4. Guide post; 5. Insert post; 6. Stud; 7. Screw hole; 8. Flanged edge; 9. Guide plate; 10. Guide hole; 11. Traction block; 12. Handle; 13. Connecting seat; 14. Tension spring; 15. Clamping tooth; 16. Rack; 17. Slide rod. Detailed Implementation

[0022] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0023] In the description of this application, it should be understood that the terms "upper," "lower," "front," "back," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 This description is provided for the convenience of describing this application and for the purpose of simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0024] like Figure 1-4 As shown, a blind hole processing device for aerospace components includes: a bracket 1, which has a rectangular frame structure and provides support; a fixed plate 2, whose first end is fixedly connected to the end of the bracket 1, and the length direction of the fixed plate 2 is perpendicular to the length direction of the bracket 1; a pin 5, which is detachably connected to the second end of the fixed plate 2, and the detachable pin 5 facilitates the replacement of blind holes with different diameters; a movable plate 3, whose first end is slidably engaged with the inner side of the bracket 1, both the movable plate 3 and the fixed plate 2 are elongated to provide space for accommodating aerospace components, the length of the movable plate 3 is the same as the length of the fixed plate 2, and the two are arranged parallel to each other; and a guide plate 9, which is connected to the second end of the movable plate 3. The device features a detachable connection at both ends, a central guide hole 10, and a coaxial guide hole 10 with the insertion post 5. The detachable guide plate 9 facilitates the replacement of guide holes 10 with different inner diameters to accommodate blind holes of different diameters, ensuring accurate positioning of the coaxial portion of the insertion post 5 within the blind hole. The guide post 4 is fixedly connected to the bracket 1 at both ends. The movable plate 3 has through holes through which the guide post 4 passes. The guide post 4 is configured to guide the movement of the movable plate 3. The first end of the movable plate 3 is prevented from falling off by the restriction of the guide post 4. During movement, the guide post 4 guides the plate to move along the length of the bracket 1. The positioning unit can fasten the first end of the movable plate 3 to fix its position.

[0025] like Figure 3As shown, in some embodiments, the guide plate 9 is provided with external threads, and the second end of the movable plate 3 is constructed with a screw hole 7 adapted to the guide plate 9. The guide plate 9 is screwed to the screw hole 7. The guide plate 9 can be disassembled and installed by screwing it, which facilitates the replacement of the guide plate 9. The guide holes 10 on the guide plate 9 are configured with different diameters and are the same diameter as the insert 5. The end of the insert 5 is fixedly connected to a stud 6, which is screwed to the second end of the fixed plate 2. The insert 5 can be disassembled by screwing it. The insert 5 is configured with different diameters so that by replacing the insert 5 on the fixed plate 2, it can adapt to blind holes of different diameters, thereby reducing the gap between the insert 5 and the blind hole and maintaining coaxiality, thereby positioning the guide hole 10 for machining coaxial blind holes.

[0026] In some embodiments, the positioning unit includes: a traction block 11, which is slidably engaged with the bracket 1. The traction block 11 is U-shaped, and the bracket 1 is located inside the traction block 11. The two are in contact, so that the two curved arms of the traction block 11 can be slidably engaged with the bracket 1; a connecting seat 13, which is fixedly connected to the movable plate 3. The connecting seat 13 can be provided on both sides of the movable plate 3; and a tension spring 14, which is connected at both ends to the connecting seat 13 and the traction block 11 to pull the traction block 11. The tension spring 14 pulls the traction block 11, causing the traction block 11 to be in contact with the bracket 1 and generate friction, thereby securing the position of the movable plate 3.

[0027] like Figure 4 As shown, in some embodiments, a rack 16 is provided on the support 1 along the length direction. There are two racks 16 distributed on both sides of the support 1. The traction block 11 is provided with a locking tooth 15 that is adapted to the rack 16 so that the two can mesh. When the traction block 11 is pulled and fits against the support 1, the rack 16 and the locking tooth 15 mesh together to further tighten the traction block 11 and prevent displacement when tightening the traction block 11. The rack 16 and the locking tooth 15 are both formed and processed in the support 1 and the traction block 11.

[0028] In some embodiments, a flange 8 is fixedly provided on one end edge of the screw hole 7 to limit the guide plate 9. The flange 8 can support the end of the guide plate 9 to limit the guide plate 9 and prevent the guide plate 9 from falling off.

[0029] like Figure 4 As shown, in some embodiments, the positioning unit further includes a slide rod 17. One end of the slide rod 17 is fixedly connected to the traction block 11, and the other end of the slide rod 17 passes through the connecting seat 13. The rod body is slidably fitted with the connecting seat 13. The axial direction of the slide rod 17 extends along the length direction of the movable plate 3, which can keep the traction block 11 offset along the length direction of the movable plate 3, so that the traction block 11 is disengaged from the bracket 1, which facilitates the displacement of the movable plate 3.

[0030] like Figure 1 As shown, in some embodiments, a handle 12 is fixedly provided on the traction block 11 to facilitate pulling the traction block 11.

[0031] In some embodiments, there are at least two guide posts 4, which extend along the length of the bracket 1.

[0032] In the above structure, when coaxial blind hole processing is required, the insert 5 is first coaxially inserted into the already processed blind hole, and then the movable plate 3 is pushed to move closer to the part that needs to be coaxially processed. At this time, the guide hole 10 is coaxial with the insert 5, and the blind hole is processed through the guide hole 10 to facilitate the processing of coaxial blind holes. When it is necessary to adapt to blind holes of different diameters, the insert 5 can be disassembled by screwing it, and the guide plate 9 can be disassembled by screwing it. By replacing the insert 5 of different diameters and the guide hole 10 on the guide plate 9, it is possible to adapt to blind holes of different diameters.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made to this application without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this application as claimed. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. A blind hole machining apparatus for aerospace components, characterized in that, include: The bracket (1) has a rectangular frame structure and can provide support; Fixed plate (2), the first end of which is fixedly connected to the end of bracket (1); insert post (5), which is detachably connected to the second end of fixed plate (2); movable plate (3), the first end of which is slidably engaged with the inner side of bracket (1); guide plate (9), which is detachably connected to the second end of movable plate (3), and has a guide hole (10) in the center, and the guide hole (10) is coaxial with insert post (5); guide post (4), both ends of which are fixedly connected to bracket (1), and the movable plate (3) has a through hole for the guide post (4) to pass through, and the guide post (4) is configured to guide the movement of movable plate (3); positioning unit, which can fasten the first end of movable plate (3).

2. The blind hole machining device for aerospace parts according to claim 1, characterized in that: The guide plate (9) is provided with an external thread, and the second end of the movable plate (3) is constructed with a screw hole (7) that is compatible with the guide plate (9). The guide plate (9) is screwed to the screw hole (7). The end of the insert (5) is fixedly connected with a stud (6), and the stud (6) is screwed to the second end of the fixed plate (2).

3. The blind hole machining device for aerospace parts according to claim 2, characterized in that: The positioning unit includes: a traction block (11) that slides with the bracket (1); a connecting seat (13) that is fixedly connected to the movable plate (3); and a tension spring (14) that is connected at both ends to the connecting seat (13) and the traction block (11) to be able to pull the traction block (11).

4. The blind hole machining device for aerospace parts according to claim 3, characterized in that: A rack (16) is provided on the bracket (1) along the length direction, and a locking tooth (15) is provided on the traction block (11) to match the rack (16) so that the two can mesh.

5. The blind hole machining apparatus for aerospace components according to claim 2, characterized in that: A flange (8) is fixedly provided on one end edge of the screw hole (7) to limit the guide plate (9).

6. The blind hole machining apparatus for aerospace components according to claim 3, characterized in that: The positioning unit also includes a slide rod (17), one end of which is fixedly connected to the traction block (11), and the other end of which passes through the connecting seat (13), and the rod body slides with the connecting seat (13).

7. A blind hole machining apparatus for aerospace components according to claim 2 or 3, characterized in that: A handle (12) is fixedly installed on the traction block (11) to facilitate pulling the traction block (11).

8. The blind hole machining apparatus for aerospace parts according to claim 1, characterized in that: There are at least two guide posts (4), and their length extends along the length of the bracket (1).

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