Fixture for composite material processing and use method thereof

By designing a fixture for composite material processing, the problem of fixture blocking and trimming tools in the prior art is solved, and the effect of efficiently treating the edge of composite material without secondary fixation is achieved.

CN119839936APending Publication Date: 2025-04-18GUANGLIAN AVIATION IND CO LTD
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Patent Information

Application Number
CN202510110966.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-23
Publication Date
2025-04-18

AI Technical Summary

Technical Problem

During the manufacturing process of aircraft composite materials, existing fixtures tend to block the trimming tools when trimming the edges of composite materials, resulting in the need for secondary fixation and prolonging the processing time.

Method used

A clamp for processing composite materials is designed, including a base plate, a moving device, a connecting device and a pressure device. Connect the threaded hole to the moving device, adjust the angle of the connecting device, ensure that the trimming tool can move smoothly, and the plate is stably clamped through the pressure device.

Benefits of technology

This fixture not only avoids secondary fixation of the plate and saves processing time, but also adjusts the angle of the connecting device according to the plate at different locations to adapt to different processing needs.

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Abstract

The invention discloses a clamp for composite material machining and a using method thereof and belongs to the field of clamps. Comprising a baseplate; threaded holes are formed in the upper end of the bottom plate, and the bottom plate is connected with the movable device through the threaded holes. The movable device is connected with the fixed device through the connecting device; and a pressure applying device for applying pressure to the plate is arranged on the fixing device. One end of the connecting rod I is hinged with a connecting rod II; fixing rings are fixedly connected to the ends, away from the connecting rods I, of the connecting rods II; a threaded cylinder is further connected to the screw I through threads, and a rotating ring is connected to the outer circular surface of the threaded cylinder through a bearing; a limiting rod is hinged to the outer circle face of the rotating ring, and the other end of the limiting rod is hinged to the side face of the second connecting rod. According to the device, a trimming tool cannot be blocked, so that secondary fixation of the plates is avoided, the treatment time is saved, and meanwhile, the connecting device can be inclined by a certain angle to meet the treatment requirements of the plates at different positions.
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Description

Technical Field

[0001] The invention relates to a clamp for composite material processing and a use method thereof, belonging to the field of clamps. Background Art

[0002] In the manufacturing process of aircraft composites, fixtures play a vital role. After the composite parts are fixed and processed, the edges often need to be trimmed. This is because the composite materials may produce some unnecessary burrs or protrusions during the processing, which need to be removed by trimming to achieve the final product quality and appearance requirements.

[0003] However, the clamps commonly used at present are mostly fixed on the plates supporting the composite materials. When trimming the edge of the composite materials, they will block the movement of the trimming tools, resulting in the need for secondary fixation of the composite materials and processing of the remaining positions, which prolongs the processing time. Therefore, it is necessary to improve them. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems existing in the background technology and to provide a fixture for processing composite materials and a method of using the fixture.

[0005] The present invention achieves the above-mentioned purpose by adopting the following technical solutions:

[0006] A clamp for composite material processing comprises a base plate; a threaded hole is provided at the upper end of the base plate, and the base plate is connected to a movable device via the threaded hole; the movable device is connected to a fixing device via a connecting device; and a pressure device for applying pressure to the plate is provided on the fixing device.

[0007] A method for using a fixture for processing composite materials, the method comprising the following steps:

[0008] Step 1: Place the plate on the upper end of the bottom plate;

[0009] Step 2: Rotate the connecting ring to adjust the height of the connecting ring, and then adjust the height of the screw rod I and the connecting rod I, and rotate the connecting tube to adjust the position of the screw rod II, and adjust the angle of the connecting device through the connecting ring and the connecting tube;

[0010] Step 3: Turn screw III to press the pressure plate onto the upper end of the plate.

[0011] Compared with the prior art, the present invention has the following beneficial effects: the present invention not only does not block the trimming tool, thereby avoiding secondary fixation of the board and saving processing time, but the present invention can also tilt the connecting device at a certain angle to adapt to the processing requirements of boards in different positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view of a fixture for processing composite materials of the present invention;

[0013] Figure 2 It is a schematic diagram of the state of a fixture for processing composite materials of the present invention when fixing an arc-shaped plate;

[0014] Figure 3 It is a structural schematic diagram of a bottom plate of a fixture for processing composite materials of the present invention;

[0015] Figure 4 It is a schematic structural diagram of a movable device of a composite material processing fixture of the present invention;

[0016] Figure 5 is a top view of a connecting device of a clamp for composite material processing of the present invention;

[0017] Figure 6 This is a schematic diagram of the state of the connecting rod of a composite material processing fixture of the present invention during rotation. Figure 1 ;

[0018] Figure 7 This is a schematic diagram of the state of the connecting rod of a composite material processing fixture of the present invention during rotation. Figure 2 ;

[0019] Figure 8 It is a structural schematic diagram of a fixing device of a fixture for composite material processing of the present invention;

[0020] Fig. 9 It is a structural schematic diagram of a pressure-applying device of a fixture for processing composite materials according to the present invention. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] Specific implementation method 1: Figure 1-9 As shown, this embodiment records a fixture for processing composite materials, including a base plate 1; a threaded hole 11 is provided at the upper end of the base plate 1, and the base plate 1 is connected to a movable device 3 through the threaded hole 11; the movable device 3 is connected to a fixing device 5 through a connecting device 4; and a pressure device 6 for applying pressure to a plate 2 is provided on the fixing device 5.

[0023] The movable device 3 includes a screw rod Ⅰ32; a baffle 33 is fixedly connected to the bottom of the screw rod Ⅰ32, and a connecting ring 31 is provided at the bottom of the screw rod Ⅰ32 for sliding cooperation with the screw rod Ⅰ32, a cavity is provided inside the connecting ring 31 for sliding cooperation with the baffle 33, and the connecting ring 31 is threadedly connected to the threaded hole 11; a connecting rod Ⅰ34 is also threadedly connected to the middle and upper part of the screw rod Ⅰ32; a connecting rod Ⅱ38 is hinged at one end of the connecting rod Ⅰ34; a fixing ring 39 is fixedly connected to the end of the connecting rod Ⅱ38 away from the connecting rod Ⅰ34; a threaded barrel 36 is also threadedly connected to the screw rod Ⅰ32, and a rotating ring 35 is connected to the outer circumferential surface of the threaded barrel 36 through a bearing; a limiting rod 37 is hinged on the outer circumferential surface of the rotating ring 35, and the other end of the limiting rod 37 is hinged to the side of the connecting rod Ⅱ38. The connecting ring 31 drives the screw rod I 32 to move up and down, thereby driving the connecting rod I 34 to move up and down, thereby adjusting the tilt angle of the connecting rod II 38, so as to drive the connecting device 4 to tilt to a preset angle. The hinge between the connecting rod I 34 and the connecting rod II 38 only allows the connecting rod II 38 to rotate in a vertical plane.

[0024] The connecting device 4 includes an arc block 41; an arc groove I 48 is provided at one end of the arc block 41, and a limit block 44 is connected inside the arc groove I 48, and the arc groove I 48 is slidably matched with the slider 43; an arc groove II 45 is provided at the other end of the arc block 41, and the arc groove II 45 is slidably matched with the arc-shaped connecting rod 42; an arc groove III 49 is provided inside the connecting rod 42, and the arc groove III 49 is fixedly connected to the slider 43, and the arc groove III 49 is slidably matched with the limit block 44; the connecting rod 42 is slidably matched with the fixing ring 39, and a transmission rod 46 is fixedly connected to the inner circumferential surface of the connecting rod 42; a multi-stage elastic telescopic rod 47 is fixedly connected between the fixing ring 39 and the transmission rod 46. The connecting device 4 is located above the position where the plate 2 is to be cut. The connecting rod II 38 and the rotating rod 53 are connected by the connecting device 4 to facilitate the auxiliary pressure plate 61 to apply pressure to the plate 2 to clamp the plate 2. At the same time, during the rotation of the connecting rod 42, the connecting rod 42 is first inserted into the arc groove II 45, and the slider 43 is separated from the arc groove I 48 to prevent the connecting rod 42 from being separated from the arc block 41.

[0025] One end of the slider 43 close to the arc block 41 with the arc groove I 48 is exposed outside the connecting rod 42 , so that the slider 43 can be inserted into the arc groove I 48 .

[0026] The central angle of the arc block 41 is less than 180°, and the central angle of the connecting rod 42 is equal to 180°. When one end of the connecting rod 42 close to the arc groove Ⅰ48 contacts the end of the arc block 41 provided with the arc groove Ⅰ48, the central angle of the opening between the other ends is smaller than the central angle of the slider 43 exposed outside the connecting rod 42. During the rotation of the connecting rod 42, the connecting rod 42 is first inserted into the arc groove Ⅱ45, and then the slider 43 is separated from the arc groove Ⅰ48, so as to prevent the connecting rod 42 from being separated from the arc block 41.

[0027] When one end of the connecting rod 42 near the arc groove I 48 contacts the end of the arc block 41 provided with the arc groove I 48, the sum of the central angle corresponding to the opening between the other ends and the central angle corresponding to the arc groove II 45 is greater than the central angle corresponding to the portion of the slider 43 exposed outside the connecting rod 42. After the connecting rod 42 is inserted into the arc groove II 45, the slider 43 can be separated from the arc groove I 48.

[0028] When the end of the connecting rod 42 close to the arc groove I48 contacts the end of the arc block 41 provided with the arc groove I48, the multi-stage elastic telescopic rod 47 is in the original length state.

[0029] The fixing device 5 comprises a rotating rod 53 fixedly connected to the outer circumferential surface of the arc block 41; the rotating rod 53 is hinged to the screw rod II 52; and the connecting tube 51 of the screw rod II 52 is threadedly connected.

[0030] The pressure-applying device 6 comprises a threaded ring 63 ; a hole 64 is provided on the outer circumferential surface of the threaded ring 63 , and the connecting tube 51 is connected in the hole 64 via a bearing; the threaded ring 63 is threadedly connected to the screw rod III 62 , and a pressure plate 61 is fixedly connected to the lower end of the screw rod III 62 .

[0031] A method for using a fixture for processing composite materials, the method comprising the following steps:

[0032] Step 1: Place the plate 2 on the upper end of the bottom plate 1;

[0033] Step 2: Rotate the connecting ring 31 to adjust the height of the connecting ring 31, and then adjust the heights of the screw rod I 32 and the connecting rod I 34, and rotate the connecting tube 51 to adjust the position of the screw rod II 52, and adjust the angle of the connecting device 4 through the connecting ring 31 and the connecting tube 51;

[0034] Step 3: Rotate the screw III 62 to press the pressing plate 61 onto the upper end of the plate 2 .

[0035] The working principle of the present invention is: when using the device, the plate 2 is placed on the upper end of the bottom plate 1, and when the plate 2 is Figure 1When it is in the shape of a flat plate, the connecting ring 31 is rotated, and the connecting ring 31 drives the baffle 33 and the screw rod I 32 to move downward, and then drives the connecting rod I 34 to move, so that the connecting rod I 34 and the rotating rod 53 are on the same horizontal plane, and then the threaded cylinder 36 is rotated to make the threaded cylinder 36 close to the upper end of the connecting rod I 34, and at the same time, the connecting cylinder 51 is rotated to adjust the position of the screw rod II 52, so that the connecting rod II 38 and the rotating rod 53 are on the same plane, that is, the connecting device 4 is in a horizontal state, and then the screw rod III 62 is rotated to make the screw rod III 62 drive the pressure plate 61 to move downward and close to the upper end of the plate 2 to clamp it. Since the limit rod 37 is restricted by the threaded cylinder 36, the rotation of the connecting rod II 38 relative to the connecting rod I 34 is restricted, so as to ensure that the pressure plate 61 applies a stable pressure to the plate 2;

[0036] When the trimming tool 8 processes the plate 2, the trimming tool 8 moves to the position of the connecting device 4. Figure 5 The opening between the connecting rod 42 and the arc-shaped rod 41 in the state shown enters the interior of the connecting device 4, and then the pruning tool 8 continues to move and contacts the transmission rod 46. Since the transmission rod 46 is arranged obliquely and does not pass through the center of the arc-shaped rod 41, after the pruning tool 8 contacts the transmission rod 46, the transmission rod 46 drives the connecting rod 42 and the slider 43 to rotate relative to the fixing ring 39 around the center of the connecting rod 42 under the push of the pruning tool 8, and compresses the multi-stage elastic telescopic rod 46 until the pruning tool 8 pushes the transmission rod 46 to rotate to Figure 6 In the state shown, since the connecting rod 42 and the arc rod 41 are provided with an arc groove II 45 at one end, the central angle corresponding to the opening (i.e. Figure 5 The opening of the state shown) is smaller than the central angle corresponding to the portion of the slider 43 exposed outside the connecting rod 42. Therefore, when the connecting rod 42 contacts the end of the arc-shaped rod 41 provided with the arc-shaped groove II 45, the slider 43 does not separate from the arc-shaped groove I 48. After the connecting rod 42 slides into the arc-shaped groove II 45 as the transmission rod 46 rotates, the slider 43 separates from the arc-shaped groove I 48, (i.e. Figure 7 The state shown in the figure) makes the slider 43 and the arc-shaped rod 41 have an end with an arc groove I48 to expose an opening for the pruning tool 8 to pass through. When the pruning tool 8 is separated from the connecting device 4, under the elastic force of the multi-stage elastic telescopic rod 47, the connecting rod 42 and the slider 43 move to the original position; through the above steps, the pruning tool 8 can pass through the device without disassembling the device, and the plate 2 under the connecting device 4 can be trimmed, without the need for subsequent secondary fixation, saving time;

[0037] When plate 2 is Figure 2When the state shown is provided with an arc, a cushion block 7 of the same shape as the plate 2 is placed on the bottom plate 1, and then the plate 2 is placed on the upper end of the cushion block 7. At the end of the plate 2 with the arc, the connecting ring 31 is rotated to drive the screw rod I 32 to move downward through the baffle 33, thereby driving the connecting rod I 34 to move downward, so that the end of the connecting rod II 38 close to the connecting rod I 34 is tilted downward, and at the same time, the connecting cylinder 51 is rotated to increase the total length of the screw rod II 52 and the connecting cylinder 51. When the connecting rod II 38 tilts downward, the rotating rod 53 is driven to tilt downward through the connecting device 4, so that the connecting device 4 located between the connecting rod II 38 and the rotating rod 53 is tilted to a preset cutting angle. Figure 2 When the obliquely moving trimming tool 8 contacts the connecting device 4, the connecting device 4 is adjusted to a predetermined tilt angle, so that the angles between the central axis of the connecting device 4, the trimming device 5 and the horizontal plane are equal, so that the trimming tool 8 can pass through the connecting device 4 according to the above steps, so as to facilitate the processing of the plate 2 without secondary fixing;

[0038] The pressure device 6 is provided with a connecting device 4, a fixing device 5 and a movable device 3 on both sides. When in use, the inclination angle of the connecting device 4 at the corresponding position can be adjusted according to the different cutting angles on both sides of the plate 2, which is more convenient to use.

[0039] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other forms of assembly without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations within the meaning and range of equivalents of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fixture for processing composite materials, characterized in that: The invention comprises a bottom plate (1); a threaded hole (11) is provided at the upper end of the bottom plate (1), and the bottom plate (1) is connected to a movable device (3) via the threaded hole (11); the movable device (3) is connected to a fixing device (5) via a connecting device (4); and a pressure device (6) for applying pressure to the plate (2) is provided on the fixing device (5).

2. A fixture for composite material processing according to claim 1, characterized in that: The movable device (3) comprises a screw rod I (32); a baffle (33) is fixedly connected to the bottom of the screw rod I (32), and a connecting ring (31) is provided at the bottom of the screw rod I (32) for sliding cooperation with the screw rod I (32), a cavity is provided inside the connecting ring (31) for sliding cooperation with the baffle (33), and the connecting ring (31) is threadedly connected to the threaded hole (11); a connecting rod I (34) is also threadedly connected to the middle and upper part of the screw rod I (32); the connecting rod One end of rod I (34) is hinged with connecting rod II (38); one end of connecting rod II (38) away from connecting rod I (34) is fixedly connected with a fixing ring (39); a threaded cylinder (36) is also threadedly connected to the screw rod I (32), and a rotating ring (35) is connected to the outer circumference of the threaded cylinder (36) via a bearing; a limiting rod (37) is hingedly connected to the outer circumference of the rotating ring (35), and the other end of the limiting rod (37) is hinged to the side of connecting rod II (38).

3. A fixture for composite material processing according to claim 2, characterized in that: The connecting device (4) comprises an arc block (41); an arc groove I (48) is provided at one end of the arc block (41), the arc groove I (48) is provided with a limit block (44) inside, and the arc groove I (48) is slidably matched with the slider (43); an arc groove II (45) is provided at the other end of the arc block (41), and the arc groove II (45) is slidably matched with the arc-shaped connecting rod (42); an arc groove III (49) is provided inside the connecting rod (42), the arc groove III (49) is fixedly connected with the slider (43), and the arc groove III (49) is slidably matched with the limit block (44); the connecting rod (42) is slidably matched with the fixing ring (39), and a transmission rod (46) is fixedly connected to the inner circumferential surface of the connecting rod (42); a multi-stage elastic telescopic rod (47) is fixedly connected between the fixing ring (39) and the transmission rod (46).

4. A fixture for composite material processing according to claim 3, characterized in that: One end of the sliding block (43) provided with an arc groove I (48) close to the arc block (41) is exposed outside the connecting rod (42).

5. A fixture for processing composite materials according to claim 4, characterized in that: The central angle corresponding to the arc block (41) is less than 180°, and the central angle corresponding to the connecting rod (42) is equal to 180°. When one end of the connecting rod (42) close to the arc groove I (48) contacts one end of the arc block (41) provided with the arc groove I (48), the central angle corresponding to the opening between the other ends of the two is smaller than the central angle corresponding to the part of the slider (43) exposed outside the connecting rod (42).

6. A fixture for composite material processing according to claim 5, characterized in that: When one end of the connecting rod (42) close to the arc groove I (48) contacts the end of the arc block (41) provided with the arc groove I (48), the sum of the central angle corresponding to the opening between the other ends of the two and the central angle corresponding to the arc groove II (45) is greater than the central angle corresponding to the part of the slider (43) exposed outside the connecting rod (42).

7. A fixture for composite material processing according to claim 6, characterized in that: When one end of the connecting rod (42) close to the arc groove I (48) contacts one end of the arc block (41) provided with the arc groove I (48), the multi-stage elastic telescopic rod (47) is in the original length state.

8. A fixture for composite material processing according to claim 7, characterized in that: The fixing device (5) comprises a rotating rod (53) fixedly connected to the outer circumferential surface of the arc block (41); the rotating rod (53) is hingedly connected to the screw rod II (52); and the connecting tube (51) of the screw rod II (52) is threadedly connected.

9. A fixture for composite material processing according to claim 8, characterized in that: The pressure-applying device (6) comprises a threaded ring (63); a hole (64) is provided on the outer circumferential surface of the threaded ring (63); the connecting tube (51) is connected in the hole (64) via a bearing; the threaded ring (63) is threadedly connected to the screw rod III (62); the lower end of the screw rod III (62) is fixedly connected to a pressure plate (61).

10. The method for using a composite material processing fixture according to claim 9, characterized in that: The method of use comprises the following steps: Step 1: placing the plate (2) on the upper end of the bottom plate (1); Step 2: Rotate the connecting ring (31) to adjust the height of the connecting ring (31), thereby adjusting the height of the screw rod I (32) and the connecting rod I (34), and rotate the connecting tube (51) to adjust the position of the screw rod II (52), and adjust the angle of the connecting device (4) through the connecting ring (31) and the connecting tube (51); Step 3: Rotate the screw III (62) to press the pressing plate (61) onto the upper end of the plate (2).