Self-positioning drilling tool for composite product

Abstract

The self-positioning drilling tool for the composite material product comprises a tool base and the composite material product, the left side of the upper end of the tool base is rotationally connected with two linkage supporting rods which are symmetrical front and back, and the right ends of the linkage supporting rods are rotationally connected with a drill plate shaped like a Chinese character'tian '. Locating pins are fixed to any three corners of the four corners of the top of the drill plate, a drill bit is arranged at the remaining corner, a locking spring fixedly connected with the tool base is fixed to the left side of the lower end of the linkage supporting rod, a composite product is placed at the upper end of the tool base, and pneumatic locking cylinders connected with the tool base are arranged at the four corners of the composite product. A limiting block fixedly connected with the tool base is arranged at the front end of the composite material product, the pneumatic locking cylinder, the opposite pressure air cylinder, the two-channel pneumatic control valve, the air inlet pipe and the drill plate work in cooperation, clamping and self-positioning of the composite material product can be rapidly achieved, the time for manual scribing and the like is saved, and the drilling efficiency is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling and cutting, in particular to a self-positioning drilling tooling for composite products. Background Art

[0002] Composite products are high-performance composite materials made of matrix materials (resins) and reinforcing materials (fiber materials) through forming processes such as hand lay-up, compression molding, and vacuum infusion. Such materials are widely used in various industries such as the automotive industry, aerospace industry, and marine shipbuilding industry. Most industries using composite products basically involve some connection and installation operations. Currently, drilling and cutting processing is a commonly used processing method before the assembly of composite products.

[0003] In the industry, for the cutting processing of composite products, mechanical processing such as water cutting, drilling and scribing with a drill press, and drilling with a machining center are mostly adopted. Due to such processing methods, there are disadvantages such as relatively complex positioning and clamping processes and low production efficiency. Content of the Utility Model

[0004] In view of the above problems, the utility model provides a self-positioning drilling tooling for composite products, which solves the above problems.

[0005] To achieve the above object, the utility model provides the following technical solution: A self-positioning drilling tooling for composite products, including a tooling base and a composite product. On the left side of the upper end of the tooling base, two symmetrically arranged linkage support rods are rotatably connected. The right end of the linkage support rod is rotatably connected to a cross-shaped drill template. Any three corners of the four corners of the top of the drill template are fixed with positioning pins, and the remaining corner is provided with a drill bit. On the left side of the lower end of the linkage support rod, locking springs fixedly connected to the tooling base are respectively fixed. A composite product is placed on the upper end of the tooling base. Pneumatic locking cylinders connected to the tooling base are provided at the four corners of the composite product. A limiting block fixedly connected to the tooling base is provided at the front end of the composite product. A counter-pressure cylinder fixedly connected to the tooling base is provided on the right side of the composite product. The telescopic end of the counter-pressure cylinder is connected to a locking connecting rod, and the locking connecting rod is rotatably connected to the drill template.

[0006] Two-channel pneumatic control valves are fixedly installed on the upper end of the tooling base. The ports of the two-channel pneumatic control valves are connected to an air inlet pipe. The two-channel pneumatic control valves are respectively connected to the pneumatic locking cylinders through the air inlet pipe.

[0007] Preferably, two symmetrically arranged A support seats are fixedly installed on the left side of the upper end of the tooling base. A rotating shaft is rotatably connected between the two A support seats. The linkage support rod is fixedly connected to the rotating shaft.

[0008] Preferably, two symmetric B support seats are fixed to the upper end of the drill template, a tooling connection shaft is rotatably connected between the two B support seats, the linkage support rod is rotatably connected to the tooling connection shaft, a locking bolt is provided at the connection between the linkage support rod and the tooling connection shaft, and two symmetric positioning blocks are fixed to the lower end of the drill template.

[0009] Preferably, the locking connecting rod is L-shaped, one end of the locking connecting rod is connected to the telescopic end of the counter-pressure cylinder, the other end of the counter-pressure cylinder is connected with a U-shaped fixing seat, the fixing seat is fixedly connected with the drill template, a fixing pin is rotatably connected to the fixing seat, and the fixing pin is rotatably connected to the locking connecting rod.

[0010] Preferably, four rubber pressing blocks placed in a square shape are fixed to the lower end of the drill template.

[0011] Preferably, drill sleeves are provided at the four corners of the upper end of the drill template, fixing bolts are connected to the drill sleeves, and the drill sleeves are fixed to the drill template through the fixing bolts.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. Through the cooperative work of the pneumatic locking cylinder, the counter-pressure cylinder, the two-channel pneumatic control valve, the air inlet pipe and the drill template, the clamping and self-positioning of the composite material product can be quickly realized, saving time such as manual marking, and significantly improving the drilling efficiency; a rubber pressing block plate protection pad is adopted at the bottom of the drill template to avoid damaging the connection surface of the composite material product after pressing.

[0014] 2. Press multiple drill sleeves onto the drill template with an interference fit, install the fixing bolts for the drill sleeves, install the positioning blocks and the rubber pressing blocks on the other end face of the drill template, install the fixing seat on the drill template according to the dimensional requirements, fit the positioning pin into the drill sleeve with a clearance fit, pass the tooling connection shaft through the linkage support rod, use the locking bolt for positioning and locking, insert the tooling connection shaft into the B support seat, and then fix the B support seat to the drill template, which can significantly improve and ensure the drilling accuracy of each composite material product. At the same time, this tooling is not only applicable to drilling holes on a machine tool, but also applicable to manual drilling, reducing the requirements for personnel skills and ensuring the drilling accuracy and efficiency. Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of the present utility model;

[0016] Figure 2 is the top view schematic diagram of the present utility model;

[0017] Figure 3 is the sectional view of the present utility model Figure 2 along A-A.

[0018] Description of the markings in the figure: 1. Two-channel pneumatic control valve; 2. Inlet pipe; 3. Locking connecting rod; 4. Tooling base; 5. Drill bit; 6. Tooling connecting shaft; 7. Positioning pin; 8. Pneumatic locking cylinder; 9. Linkage support rod; 10. Rotating shaft; 11. A support seat; 12. Locking spring; 13. Limit block; 14. Positioning block; 15. Locking bolt; 16. B support seat; 17. Drill template; 18. Fixed bolt; 19. Drill bushing; 20. Rubber pressing block; 21. Fixed plug; 22. Fixed seat; 23. Opposing pressure cylinder; 24. Composite product. Specific implementation mode

[0019] The implementation mode of the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0020] Please refer to Figure 1 、 Figure 2 and Figure 3, A self-positioning drilling tool for a composite material product, comprising a tooling base 4 and a composite material product 24. On the left side of the upper end of the tooling base 4, two symmetrically arranged linkage support rods 9 are rotatably connected. The right end of the linkage support rod 9 is rotatably connected to a cross-shaped drill template 17. At the four corners of the upper end of the drill template 17, drill bushings 19 are provided. A fixing bolt 18 is connected to the drill bushing 19, and the drill bushing 19 is fixed on the drill template 17 through the fixing bolt 18. At any three of the four corners of the top of the drill template 17, positioning pins 7 are fixed, and a drill bit 5 is provided at the remaining corner. This drilling tool uses the positioning pin 7 for positioning, which can significantly improve and ensure the drilling accuracy of each composite material product. On the left side of the lower end of the linkage support rod 9, locking springs 12 fixedly connected to the tooling base 4 are provided. The composite material product 24 is placed on the upper end of the tooling base 4. The drilling structure is to press-fit a plurality of drill bushings 19 onto the drill template 17 and install the fixing bolts 18 for the drill bushings 19; the positioning block 14 and the rubber pressing block 20 are installed on the other end face of the drill template 17; the fixing seat 22 is assembled onto the drill template 17 according to the dimensional requirements; the positioning pin 7 is assembled into the drill bushing 19 with a clearance fit; the tooling connecting shaft 6 is inserted into the linkage support rod 9 and positioned and locked with a locking bolt 15; the tooling connecting shaft 6 is sleeved into the B support seat 16, and then the B support seat 16 is fixed to the drill template 17. The composite material product 24 has the characteristic of low hardness and small drilling force. When drilling the composite material product 24 under general pressing forces such as pneumatic pressing, the stability of the drilling process and the drilling accuracy can be satisfied. At the four corners of the composite material product 24, pneumatic locking cylinders 8 connected to the tooling base 4 are provided. At the front end of the composite material product 24, a limiting block 13 fixedly connected to the tooling base 4 is provided. On the right side of the composite material product 24, an opposing pressure cylinder 23 fixedly connected to the tooling base 4 is provided. The telescopic end of the opposing pressure cylinder 23 is connected to a locking connecting rod 3, and the locking connecting rod 3 is rotatably connected to the drill template 17. On the left side of the upper end of the tooling base 4, two symmetrically arranged A support seats 11 are fixed. A rotating shaft 10 is rotatably connected between the two A support seats 11. The linkage support rod 9 is fixedly connected to the rotating shaft 10. The quick clamping structure is to insert the linkage support rod 9 through the rotating shaft 10 and fix it with bolts. Then, the assembled linkage support rod 9 and the rotating shaft 10 are passed through the rotating A support seat 11 and fixed to the tooling base 4 with bolts. The limiting block 13 is installed on the tooling base 4. By utilizing the appearance characteristics of the composite material product 24 and the groove structure on the surface of the composite material product 24, a raised positioning block 14 with a matching appearance is made; then, the composite material product is pressed with the raised positioning block 14, which can realize the self-positioning fit and pressing of the convex-concave structure and achieve the effect of fixing the composite material product 24.

[0021] At the upper end of the tooling base 4, two two-channel pneumatic control valves 1 are fixed. The ports of the two two-channel pneumatic control valves 1 are connected to an air inlet pipe 2. The two two-channel pneumatic control valves 1 are respectively connected to the pneumatic locking cylinder 8 through the air inlet pipe 2. The pneumatic control components are composed of the pneumatic locking cylinder 8, the counter-pressure cylinder 23, the two-channel pneumatic control valve 1, and the air inlet pipe 2. The pneumatic control components are respectively assembled onto the drill template 17 according to the dimensional requirements; finally, the locking connecting rod 3 is connected to the counter-pressure cylinder 23 through the fixed pin 21.

[0022] Please refer to Figure 1 、 Figure 2 and Figure 3 As shown in the figure, two symmetrically arranged B support seats 16 are fixed at the upper end of the drill template 17. A tooling connecting shaft 6 is rotatably connected between the two B support seats 16. The linkage support rod 9 is rotatably connected to the tooling connecting shaft 6. A locking bolt 15 is provided at the connection between the linkage support rod 9 and the tooling connecting shaft 6. The tooling connecting shaft 6 is rotatably connected to the linkage support rod 9. When the linkage support rod 9 drives the drill template 17 to rotate downward, it is ensured that the drill template 17 can rotate independently, and it is ensured that the drill template 17 is parallel to the composite product 24. Two symmetrically arranged positioning blocks 14 are fixed at the lower end of the drill template 17. Four rubber pressing blocks 20 arranged in a square are fixed at the lower end of the drill template 17. Rubber pressing blocks 20 are used as protective pads at the bottom of the drill template 17 to avoid damaging the connection surface of the composite product 24 after pressing.

[0023] Please refer to Figure 1 、 Figure 2 and Figure 3 As shown in the figure, the locking connecting rod 3 is L-shaped. One end of the locking connecting rod 3 is connected to the telescopic end of the counter-pressure cylinder 23. The other end of the counter-pressure cylinder 23 is connected to a U-shaped fixed seat 22. The fixed seat 22 is fixedly connected to the drill template 17. A fixed pin 21 is rotatably connected to the fixed seat 22. The fixed pin 21 is rotatably connected to the locking connecting rod 3. The telescopic end of the counter-pressure cylinder 23 drives the locking connecting rod 3 to move up and down, driving the drill template 17 to press down on the composite product 24 to ensure the fixation of the composite product 24 and prevent the composite product 24 from sliding. At the same time, the locking connecting rod 3 is rotatably connected to the drill template 17 to ensure the fitting of the drill template 17 and the composite product 24.

[0024] When the present utility model is in use:

[0025] First, the composite material product 24 is quickly positioned on the tooling base 4 through the limit block 13. After the peripheral clearance is adjusted in place, the two-channel pneumatic control valve 1 is used to control the pneumatic locking cylinder 8 to fix and clamp the composite material product 24; then the two-channel pneumatic control valve 1 is used to control the counter-pressure cylinder 23. The bottom positioning block 14 and the rubber pressing block 20 of the drill template 17 are used to quickly position and clamp the composite material product 24 through the groove of the composite material product 24, and then the drill bit 5 is used for drilling and cutting; when the first hole is drilled, the positioning pin 7 is inserted into the composite material product through the drill bushing 19, and then the other connecting holes of the composite material product 24 are drilled diagonally in sequence. In order to ensure that the position tolerance of the holes after processing meets the requirements of the geometric tolerances of the drawing, during the operation process, every time a hole is drilled, the positioning pin 7 needs to be inserted and fixed. Finally, according to the needs of the product, corresponding steps such as appearance spraying and adding markings are carried out.

[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-positioning drilling tooling for composite material products, characterized in that: It includes a tooling base (4) and a composite product (24). On the left side of the upper end of the tooling base (4), two linkage support rods (9) that are symmetrically arranged front and back are rotatably connected. The right end of the linkage support rod (9) is rotatably connected to a cross-shaped drill template (17). Any three of the four corners at the top of the drill template (17) are fixed with positioning pins (7), and the remaining corner is provided with a drill bit (5). On the left side of the lower ends of the linkage support rods (9), locking springs (12) fixedly connected to the tooling base (4) are respectively fixed. A composite product (24) is placed on the upper end of the tooling base (4). Pneumatic locking cylinders (8) connected to the tooling base (4) are provided at the four corners of the composite product (24). A limit block (13) fixedly connected to the tooling base (4) is provided at the front end of the composite product (24). A counter-pressure cylinder (23) fixedly connected to the tooling base (4) is provided on the right side of the composite product (24). The telescopic end of the counter-pressure cylinder (23) is connected to a locking connecting rod (3), and the locking connecting rod (3) is rotatably connected to the drill template (17). A two-channel pneumatic control valve (1) is fixedly installed on the upper end of the tooling base (4). The ports of the two-channel pneumatic control valve (1) are connected to an air inlet pipe (2), and the two-channel pneumatic control valve (1) is respectively connected to the pneumatic locking cylinders (8) through the air inlet pipe (2).

2. The self-positioning drilling tooling for a composite material product according to claim 1, characterized in that: Two A support seats (11) that are symmetrically arranged front and back are fixedly installed on the left side of the upper end of the tooling base (4). A rotating shaft (10) is rotatably connected between the two A support seats (11), and the linkage support rod (9) is fixedly connected to the rotating shaft (10).

3. The self-positioning drilling tooling for a composite material product according to claim 1, characterized in that: Two B support seats (16) that are symmetrically arranged front and back are fixedly installed on the upper end of the drill template (17). A tooling connecting shaft (6) is rotatably connected between the two B support seats (16). The linkage support rod (9) is rotatably connected to the tooling connecting shaft (6). A locking bolt (15) is provided at the connection between the linkage support rod (9) and the tooling connecting shaft (6). Two positioning blocks (14) that are symmetrically arranged front and back are fixedly installed at the lower end of the drill template (17).

4. The self-positioning drilling tooling for a composite material product according to claim 1, characterized in that: The locking connecting rod (3) is L-shaped. One end of the locking connecting rod (3) is connected to the telescopic end of the counter-pressure cylinder (23), and the other end of the counter-pressure cylinder (23) is connected to a U-shaped fixing seat (22). The fixing seat (22) is fixedly connected to the drill template (17). A fixing pin (21) is rotatably connected to the fixing seat (22), and the fixing pin (21) is rotatably connected to the locking connecting rod (3).

5. The self-positioning drilling tooling for a composite material product according to claim 1, characterized in that: Four rubber pressing blocks (20) arranged in a square are fixedly installed at the lower end of the drill template (17).

6. The self-positioning drilling tooling for a composite material product according to claim 1, characterized in that: Drill sleeves (19) are provided at the four corners of the upper end of the drill template (17). Fixing bolts (18) are connected to the drill sleeves (19), and the drill sleeves (19) are fixed on the drill template (17) through the fixing bolts (18).

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