Trimming and clamping device for U-shaped composite structural beam

Abstract

The utility model provides a U-shaped composite structural beam trimming clamping device which comprises a base 1, a guide rail 2, a sliding block 3, a positioning seat 4, a movable positioning seat 5, a bent handle bolt 6, a sliding support 7, a guide plate 8, a positioning plate 9, a linkage seat 10, a set screw 11, a movable pressing screw 12, a threaded block 13, a pressing plate 14, a butterfly-shaped pressing screw rod assembly 15, a section block 16, a linkage rod 17, a stop pin 18, a guide rail brake caliper 19 and a connecting plate 20. Wherein the base 1 is formed by welding an upper flat plate and lower square steel, and the guide rails 2 which are parallel to each other are fixed on the base 1; the positioning seat 4 is fixed in the middle of the base 1 and is matched with the bent handle bolt 6 to realize center positioning of the U-shaped composite structural beam; movable positioning seats 5 are mounted on the guide rails 2 on one side, close to the two ends, of the base 1 through sliding blocks 3, and positioning of the two ends of the U-shaped composite structural beam is achieved in cooperation with bent handle bolts 6.

Description

Technical Field

[0001] This invention relates to the field of machining, and specifically to a clamping device for cutting edges of a U-shaped composite beam. Background Technology

[0002] The flaps of a certain type of aircraft contain a series of U-shaped composite beams, each approximately 7 meters long. The web of these beams is flat, with curved flanges on both sides. After curing, the excess material around the edges is often manually trimmed, leading to inconsistent dimensions, delamination, and rough milled surfaces. This results in low production efficiency and impacts subsequent delivery. Furthermore, the narrow web of the U-shaped composite beams makes vacuum clamping impossible. Therefore, a clamping method that ensures stable trimming quality while significantly improving efficiency is urgently needed. Summary of the Invention

[0003] This application provides a U-shaped composite structural beam cutting edge clamping device, which can solve the problems of low efficiency and poor cutting quality of manual cutting.

[0004] Technical Solution: This application provides a U-shaped composite beam edge-cutting clamping device, including a base 1, a guide rail 2, a slider 3, a positioning seat 4, a movable positioning seat 5, a bent-handle pin 6, a sliding support 7, a guide plate 8, a positioning plate 9, a linkage seat 10, a set screw 11, a movable clamping screw 12, a threaded block 13, a pressure plate 14, a butterfly clamping screw assembly 15, a molded block 16, a linkage rod 17, a stop pin 18, a guide rail brake caliper 19, and a connecting plate 20, wherein:

[0005] The base 1 is welded from an upper flat plate and a lower square steel, and parallel guide rails 2 are fixed on it; a positioning seat 4 is fixed in the middle of the base 1, which, together with the bent handle pin 6, realizes the center positioning of the U-shaped composite beam; a movable positioning seat 5 is installed on the guide rail 2 near both ends of the base 1 through a slider 3, which, together with the bent handle pin 6, realizes the positioning of both ends of the U-shaped composite beam.

[0006] Sliding supports 7 and linkage seats 10 are installed on parallel guide rails 2 via sliders 3. The lower hole of the sliding support 7 is clearance-fitted with the cylindrical surface of one end of the linkage rod 17, and the lower hole of the linkage seat 10 is clearance-fitted with the cylindrical surface of the other end of the linkage rod 17, so that the sliding support 7 and the linkage seat 10 can move synchronously on the guide rail 2.

[0007] A guide plate 8 is fixed at the upper end of the sliding support 7, and a positioning plate 9 is fitted with the guide plate 8 with a clearance. After the positioning plate 9 is assembled, it can be locked.

[0008] A groove is formed in the middle of the upper part of the linkage seat 10, and a central threaded hole is formed in the center of the lower plane of the groove. A set screw 11 is connected to the central thread; a threaded block 13 is installed on the set screw 11.

[0009] The threaded block 13 has a threaded hole at its center and a cylindrical surface on the outside. A square surface is formed in the middle of the cylindrical surface, and the side of the square surface is fitted with the groove on the linkage seat 10 with clearance.

[0010] The movable clamping screw 12 passes through the central threaded hole of the threaded block 13. The lower side of the square face of the threaded block 13 contacts the set screw 11. The upper side of the square face of the threaded block 13 is clamped by the pressure plate 14. The winged clamping screw assembly 15 is threaded to one side of the upper end face of the linkage seat 10. The winged clamping screw assembly 15 is composed of a set screw and a winged nut welded together.

[0011] The lower part of the stop pin 18 is inserted into a series of holes in the base 1, and the upper part of the stop pin 18 limits the sliding support 7.

[0012] All sliders 3 are fixed to the guide rail brake caliper 19 via the connecting plate 20, ensuring that all sliders 3 can be locked.

[0013] The block 16 is inserted into the U-shaped composite structure beam to provide support, and the U-shaped composite structure beam is pressed together by the movable clamping screw 12.

[0014] Specifically, the distance from the center positioning hole of the positioning seat 4 to a series of holes on the base 1 is marked by engraving lines to clarify the position of the movable positioning seat 5 and the clamping structure.

[0015] Specifically, the lower hole of the sliding support 7 and the cylindrical surface of one end of the linkage rod 17 are fitted with clearance, and the lower hole of the linkage seat 10 and the cylindrical surface of the other end of the linkage rod 17 are fitted with clearance. The hole diameter is 1mm larger than the shaft diameter.

[0016] Specifically, the groove on the linkage seat 10 has a depth H of 25mm to 35mm, based on the characteristics of the deviation of the center of each section of the U-shaped composite beam to the positioning center.

[0017] Specifically, the positioning holes on the U-shaped composite beam are process holes, and three holes are set at the same height on the web surface in the middle of the U-shaped composite beam and on the web surfaces at both ends of the U-shaped composite beam; the bent shank pin 6 is fitted with a single-sided 0.1mm clearance between the positioning holes on the U-shaped composite beam.

[0018] Specifically, the bent handle pin 6 is engaged with the positioning hole on the positioning seat 4 at position H9 / f8, and the bent handle pin 6 is engaged with the positioning hole on the movable positioning seat 5 at position H9 / f8.

[0019] In summary, this application provides a U-shaped composite beam edge-cutting clamping device. It achieves lateral positioning of the U-shaped composite beam's web surface and horizontal extrusion blocks of multiple sets of linked clamping structures to support the inner surface of the U-shaped composite beam. Then, the upward-facing flange of the U-shaped composite beam is milled using CNC milling. The unprocessed side of the U-shaped composite beam is flipped upwards, and then clamped, CNC-cut, and disassembled to complete the edge-cutting process. This realizes a flexible clamping device for U-shaped composite beam edge-cutting, enabling the clamping and positioning of multiple sets of U-shaped composite beams, avoiding the investment of a large number of edge-cutting tooling, further ensuring the edge-cutting quality of the U-shaped composite beams, and improving production efficiency. Attached Figure Description

[0020] Figure 1 A schematic top view of a U-shaped composite beam cutting edge clamping device provided in this application;

[0021] Figure 2 A schematic diagram of the middle fixed positioning structure of a U-shaped composite beam cutting edge clamping device provided in this application, along direction A;

[0022] Figure 3 A schematic diagram of the movable positioning structure at one end of a U-shaped composite beam cutting edge clamping device provided in this application, along direction B;

[0023] Figure 4 A schematic diagram of a clamping structure along the C-direction of a U-shaped composite beam cutting edge clamping device provided in this application;

[0024] Figure 5 A schematic diagram of the height adjustment structure in the D direction of the clamping structure of the U-shaped composite beam cutting edge clamping device provided in this application;

[0025] Figure 6 A schematic diagram of a side view of a clamping structure axis of a U-shaped composite beam cutting edge clamping device provided in this application;

[0026] Figure 7 This is a schematic diagram of an axial side view of a U-shaped composite beam cutting and clamping device provided in this application; wherein: base 1, guide rail 2, slider 3, positioning seat 4, movable positioning seat 5, bent handle pin 6, sliding support 7, guide plate 8, positioning plate 9, linkage seat 10, set screw 11, movable clamping screw 12, threaded block 13, pressure plate 14, butterfly clamping screw assembly 15, block 16, linkage rod 17, stop pin 18, guide rail brake caliper 19, connecting plate 20. Detailed Implementation

[0027] Example 1

[0028] like Figure 1-7As shown, this application provides a U-shaped composite beam trimming clamping device, including a base 1, a guide rail 2, a slider 3, a positioning seat 4, a movable positioning seat 5, a bent-handle pin 6, a sliding support 7, a guide plate 8, a positioning plate 9, a linkage seat 10, a set screw 11, a movable clamping screw 12, a threaded block 13, a pressure plate 14, a butterfly clamping screw assembly 15, a block 16, a linkage rod 17, a stop pin 18, a guide rail brake caliper 19, and a connecting plate 20, wherein:

[0029] The base 1 is welded from an upper flat plate and a lower square steel, and parallel guide rails 2 are fixed on it; a positioning seat 4 is fixed in the middle of the base 1, which, together with the bent handle pin 6, realizes the center positioning of the U-shaped composite beam; a movable positioning seat 5 is installed on the guide rail 2 near both ends of the base 1 through a slider 3, which, together with the bent handle pin 6, realizes the positioning of both ends of the U-shaped composite beam.

[0030] Sliding supports 7 and linkage seats 10 are installed on parallel guide rails 2 via sliders 3. The lower hole of the sliding support 7 is clearance-fitted with the cylindrical surface of one end of the linkage rod 17, and the lower hole of the linkage seat 10 is clearance-fitted with the cylindrical surface of the other end of the linkage rod 17, so that the sliding support 7 and the linkage seat 10 can move synchronously on the guide rail 2.

[0031] A guide plate 8 is fixed at the upper end of the sliding support 7, and a positioning plate 9 is fitted with the guide plate 8 with a clearance. After the positioning plate 9 is assembled, it can be locked.

[0032] A groove is formed in the middle of the upper part of the linkage seat 10, and a central threaded hole is formed in the center of the lower plane of the groove. A set screw 11 is connected to the central thread; a threaded block 13 is installed on the set screw 11.

[0033] The threaded block 13 has a threaded hole at its center and a cylindrical surface on the outside. A square surface is formed in the middle of the cylindrical surface, and the side of the square surface is fitted with the groove on the linkage seat 10 with clearance.

[0034] The movable clamping screw 12 passes through the central threaded hole of the threaded block 13. The lower side of the square face of the threaded block 13 contacts the set screw 11. The upper side of the square face of the threaded block 13 is clamped by the pressure plate 14. The winged clamping screw assembly 15 is threaded to one side of the upper end face of the linkage seat 10. The winged clamping screw assembly 15 is composed of a set screw and a winged nut welded together.

[0035] The lower part of the stop pin 18 is inserted into a series of holes in the base 1, and the upper part of the stop pin 18 limits the sliding support 7.

[0036] All sliders 3 are fixed to the guide rail brake caliper 19 via the connecting plate 20, ensuring that all sliders 3 can be locked.

[0037] The block 16 is inserted into the U-shaped composite structure beam to provide support, and the U-shaped composite structure beam is pressed together by the movable clamping screw 12.

[0038] Specifically, the distance from the center positioning hole of the positioning seat 4 to a series of holes on the base 1 is marked by engraving lines to clarify the position of the movable positioning seat 5 and the clamping structure.

[0039] Specifically, the lower hole of the sliding support 7 and the cylindrical surface of one end of the linkage rod 17 are fitted with clearance, and the lower hole of the linkage seat 10 and the cylindrical surface of the other end of the linkage rod 17 are fitted with clearance. The hole diameter is 1mm larger than the shaft diameter.

[0040] Specifically, the groove on the linkage seat 10 has a depth H of 25mm to 35mm, based on the characteristics of the deviation of the center of each section of the U-shaped composite beam to the positioning center.

[0041] Specifically, the positioning holes on the U-shaped composite beam are process holes, and three holes are set at the same height on the web surface in the middle of the U-shaped composite beam and on the web surfaces at both ends of the U-shaped composite beam; the bent shank pin 6 is fitted with a single-sided 0.1mm clearance between the positioning holes on the U-shaped composite beam.

[0042] Specifically, the bent handle pin 6 is engaged with the positioning hole on the positioning seat 4 at position H9 / f8, and the bent handle pin 6 is engaged with the positioning hole on the movable positioning seat 5 at position H9 / f8.

[0043] In summary, this application provides a U-shaped composite beam edge-cutting clamping device. It achieves lateral positioning of the U-shaped composite beam's web surface and horizontal extrusion blocks of multiple sets of linked clamping structures to support the inner surface of the U-shaped composite beam. Then, the upward-facing flange of the U-shaped composite beam is milled using CNC milling. The unprocessed side of the U-shaped composite beam is flipped upwards, and then clamped, CNC-cut, and disassembled to complete the edge-cutting process. This realizes a flexible clamping device for U-shaped composite beam edge-cutting, enabling the clamping and positioning of multiple sets of U-shaped composite beams, avoiding the investment of a large number of edge-cutting tooling, further ensuring the edge-cutting quality of the U-shaped composite beams, and improving production efficiency.

[0044] Example 2

[0045] This application provides a method for using a U-shaped composite beam edge-cutting clamping device, including:

[0046] Step 1: Fix the guide rails 2 side by side on the base 1, and fix the positioning seat 4 on one side of the middle part of the base 1;

[0047] Step 2: The movable positioning seat 5 is fixed to the slider 3 to form a movable positioning assembly, and then installed to both ends of the guide rail 2;

[0048] Step 3: The sliding support 7 and the linkage seat 10 are fixed to the slider 3 to form a clamping assembly. The sliding support 7 and the linkage seat 10 are connected by the linkage rod 17 to achieve synchronous movement.

[0049] Step 4: All sliders 3 are fixed to the guide rail brake caliper 19 via the connecting plate 20 to ensure that all sliders 3 are locked.

[0050] Step 5: Position the U-shaped composite beam with the positioning seat 4 and the movable positioning seat 5 using the bent-handle pin 6, and then fix the U-shaped composite beam by locking the locking blocks 16 one by one.

[0051] Step 6: After cutting the edges using CNC, loosen each movable clamping screw 12 one by one, disassemble the block 16, pull out the bent shank pin 6, and then flip the U-shaped composite structure beam so that the unprocessed side faces upward.

[0052] Step 7: Perform clamping, CNC trimming, and disassembly as described above to complete the trimming.

Claims

1. A clamping device for cutting edges of a U-shaped composite beam, characterized in that, The components include a base (1), a guide rail (2), a slider (3), a positioning seat (4), a movable positioning seat (5), a bent shank pin (6), a sliding support (7), a guide plate (8), a positioning plate (9), a linkage seat (10), a set screw (11), a movable clamping screw (12), a threaded block (13), a pressure plate (14), a butterfly clamping screw assembly (15), a block (16), a linkage rod (17), a stop pin (18), a guide rail brake caliper (19), and a connecting plate (20), wherein: The base (1) is composed of an upper plate and a lower square steel welded together, and parallel guide rails (2) are fixed on it; a positioning seat (4) is fixed in the middle of the base (1), which, together with the bent handle pin (6), realizes the center positioning of the U-shaped composite structure beam; a movable positioning seat (5) is installed on the guide rail (2) on one side near both ends of the base (1) through a slider (3), which, together with the bent handle pin (6), realizes the positioning of both ends of the U-shaped composite structure beam; Sliding supports (7) and linkage seats (10) are installed on parallel guide rails (2) via sliders (3). The lower hole of the sliding support (7) is fitted with the cylindrical surface of one end of the linkage rod (17) with clearance, and the lower hole of the linkage seat (10) is fitted with the cylindrical surface of the other end of the linkage rod (17) with clearance, so that the sliding support (7) and linkage seat (10) can move synchronously on the guide rails (2).

2. The U-shaped composite beam cutting edge clamping device according to claim 1, characterized in that, The upper end of the sliding support (7) is fixed with a guide plate (8), and the positioning plate (9) is fitted with the guide plate (8) with a clearance. After the positioning plate (9) is assembled, it can be locked. A groove is made in the middle of the upper part of the linkage seat (10), and a central threaded hole is made in the center of the lower plane of the groove. A set screw (11) is connected to the central thread; a threaded block (13) is installed on the set screw (11). The center of the threaded block (13) is a threaded hole, the outside is a cylindrical surface, and a square surface is made in the middle of the cylindrical surface. The side of the square surface is fitted with the groove on the linkage seat (10) with clearance. The movable clamping screw (12) passes through the central threaded hole of the threaded block (13). The lower side of the square face of the threaded block (13) contacts the set screw (11). The upper side of the square face of the threaded block (13) is clamped by the pressure plate (14). The wing clamping screw assembly (15) is threaded to one side of the upper end face of the linkage seat (10). The wing clamping screw assembly (15) is composed of a set screw and a wing nut welded together. The lower part of the stop pin (18) is inserted into a series of holes in the base (1), and the upper part of the stop pin (18) limits the sliding support (7); All sliders (3) are fixed to the guide rail brake caliper (19) by the connecting plate (20) to ensure that all sliders (3) can be locked; The mold block (16) is inserted into the U-shaped composite structure beam to provide support, and the U-shaped composite structure beam is pressed by the movable clamping screw (12); The distance from the center positioning hole of the positioning seat (4) is marked by engraving around the hole of the base (1) to clarify the position of the movable positioning seat (5) and the clamping structure.

3. The U-shaped composite beam cutting edge clamping device according to claim 1, characterized in that, The groove on the linkage seat (10) is 25mm to 35mm deep, according to the characteristics of the U-shaped composite structure beam applicable to this device, where the center of each section is offset from the positioning center.

4. The U-shaped composite beam cutting edge clamping device according to claim 1, characterized in that, The positioning holes on the U-shaped composite beam are process holes. Three holes are set at the same height on the web surface in the middle of the U-shaped composite beam and the web surface at both ends of the U-shaped composite beam. The bent shank pin (6) is fitted with a single-sided 0.1mm clearance between the positioning holes on the U-shaped composite beam and the positioning holes.

5. The U-shaped composite beam cutting edge clamping device according to claim 1, characterized in that, The bent handle pin (6) is engaged with the positioning hole on the positioning seat (4) at position H9 / f8, and the bent handle pin (6) is engaged with the positioning hole on the movable positioning seat (5) at position H9 / f8.

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