A rotary body carbon fiber laying auxiliary clamp based on a zero-point positioning quick-change device

Abstract

The application relates to a rotary body carbon fiber laying auxiliary clamp based on a zero-point positioning quick-change device, which comprises a zero-point positioning quick-change device and a lifting mechanism; the zero-point positioning quick-change device comprises an upper zero-point positioning module and a lower zero-point positioning module which are oppositely installed and have a coincidence precision of central shafts within 0.005mm; and the lifting mechanism is used for driving the upper zero-point positioning module and / or the lower zero-point positioning module to make lifting movement. The rotary body carbon fiber laying auxiliary clamp can realize auxiliary clamping of carbon fiber laying on the surfaces of double rotary bodies, and is simple to operate and high in precision.

Description

Technical Field

[0001] This invention belongs to the field of mechanical processing clamping fixture application technology, and relates to a rotary carbon fiber laying auxiliary fixture based on a zero-point positioning quick-change device. Background Technology

[0002] Carbon fiber composites possess numerous superior properties, including abrasion resistance, high temperature resistance, and high strength and density, making them widely used in aerospace, automotive manufacturing, and other industrial fields. With the increasing application and promotion of carbon fiber composites, carbon fiber manufacturing technology has placed higher demands on carbon fiber layup processes, including layup equipment, layup trajectory, and layup environmental conditions. Among these, carbon fiber layup equipment is a key component for achieving precise, efficient, and automated carbon fiber layup, and is fundamental to ensuring the quality of carbon fiber composites.

[0003] For the carbon fiber placement process of rotating bodies, carbon fiber winding technology is mainly used. This involves winding resin-impregnated carbon fibers onto the surface of the core material of the rotating structure, followed by curing, demolding, and other steps to obtain the carbon fiber composite component. With the widespread application of carbon fiber composite materials, the market has placed higher technical requirements on the carbon fiber winding process. On the one hand, components with carbon fiber composites as the main load-bearing structure place higher demands on the customization of the rotating core material wound with carbon fiber. This involves replacing the original single-material rotating core material with a rotating core material composed of two or more materials, and then combining multiple core materials by laying carbon fiber around it. Thus, depending on the characteristics of the carbon fiber composite component, different rotating core materials can be combined in different parts of the core material, thereby optimizing the local strength of the carbon fiber composite component, reducing the overall density, and forming a customizable design and functional application. On the other hand, taking advantage of the low density, corrosion resistance, and dimensional stability of carbon fiber, a thin layer of carbon fiber can be wound around the surface of an existing structure to act as a surface coating. This process places higher and broader demands on the process applicability of the rotating core material wound with carbon fiber and the auxiliary fixtures for laying carbon fiber to hold the rotating core material. That is, it is expected that the auxiliary fixtures can support multiple rotating core materials and the simultaneous clamping and unloading functions of multiple ports.

[0004] However, existing rotary carbon fiber layup processes are mainly applied to single rotary core materials, such as... Figure 4 As shown, the existing process mainly uses a combination of chuck 23 and centering tip 24 for auxiliary clamping. The rotating body d 25 can only be clamped and disassembled from one end of chuck 23 before the carbon fiber filament 16 is wound. Among these processes, loading and unloading the rotating body d 25 is time-consuming, inefficient, and labor-intensive. The existing rotating body carbon fiber laying process cannot achieve overall carbon fiber laying under the condition of alignment of multiple rotation center axes.

[0005] Therefore, it is of great significance to study a rotating carbon fiber laying auxiliary fixture based on a zero-point positioning quick-change device to solve the problem of overall carbon fiber laying in the case of multiple rotation center axis alignment in the existing technology. Summary of the Invention

[0006] The purpose of this invention is to solve the problems existing in the prior art and provide a rotating carbon fiber laying auxiliary fixture based on a zero-point positioning quick-change device.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A rotary carbon fiber laying auxiliary fixture based on a zero-point positioning quick-change device includes a zero-point positioning quick-change device and a lifting mechanism. The zero-point positioning quick-change device includes an upper zero-point positioning module and a lower zero-point positioning module installed opposite each other with a central axis coincidence accuracy within 0.005mm. The central axis coincidence accuracy is the distance between the central axes of the upper zero-point positioning module and the lower zero-point positioning module. The lifting mechanism is used to drive the upper zero-point positioning module and / or the lower zero-point positioning module to perform lifting and lowering movements.

[0009] As a preferred technical solution:

[0010] As described above, a rotary carbon fiber laying auxiliary fixture based on a zero-point positioning quick-change device further includes a movable worktable and a fixed worktable. An upper zero-point positioning module is fixed below the movable worktable, and a lower zero-point positioning module is fixed above the fixed worktable. A lifting mechanism is used to drive the movable worktable to move up and down. In this invention, the lower zero-point positioning module can remain stationary while the upper zero-point positioning module moves, or the lower zero-point positioning module can move while the upper zero-point positioning module remains stationary, or both can move. Considering that the fixture structure is easier to design and operation is more convenient when the lower zero-point positioning module remains stationary while the upper zero-point positioning module moves, this is the preferred configuration of this invention.

[0011] The rotary carbon fiber laying auxiliary fixture based on the zero-point positioning quick-change device, as described above, also includes a base; a fixed worktable is mounted on the base.

[0012] The rotary carbon fiber laying auxiliary fixture based on the zero-point positioning quick-change device, as described above, has a lifting mechanism including a lead screw, a guide rail, a rotating device, a lead screw adapter plate, and a guide rail adapter plate.

[0013] The lead screw and guide rail are vertically installed on the same side of the zero-point positioning quick-change device;

[0014] The lower end of the lead screw is rotatably connected to the lower lead screw fixing block mounted on the base, and the upper end is connected to the rotating device.

[0015] The lead screw adapter plate is a vertical plate containing two opposing vertical surfaces. One surface engages with the lead screw through the lead screw's helical surface, while the other is fixedly connected to the movable worktable. When adjusting the height, the lead screw rotates in place, and the lead screw adapter plate engages with the lead screw's threaded surface through internal fixed balls, driving the lead screw adapter plate and its connected movable worktable and other components to move up and down.

[0016] The lead screw adapter plate is fixedly connected to the guide rail adapter plate, and the guide rail adapter plate is slidably connected to the guide rail.

[0017] Manually adjustable mechanical structures that move vertically mainly include ball screws, worm gears, belt pulleys, and gear chains. Compared with worm gears, ball screw structures (i.e., the structure of this invention) have the advantages of low cost, light weight of the moving structure, and small size. Compared with belt pulleys, they have the advantages of fast adjustment response, high dimensional stability, and no risk of slippage. Compared with gear chains, they have the advantages of high motion precision and no need for frequent replacement and maintenance.

[0018] As described above, a rotary carbon fiber laying auxiliary fixture based on a zero-point positioning quick-change device has a T-shaped plate structure for the movable worktable, which consists of a vertical part and a horizontal part located on one side of the vertical part. The vertical part is fixedly connected to the lead screw adapter plate, and the horizontal part is fixedly connected to the upper zero-point positioning module.

[0019] As described above, the rotary carbon fiber laying auxiliary fixture based on a zero-point positioning quick-change device has two guide rails and two guide rail adapter plates. The two guide rails are symmetrically distributed on both sides of the lead screw. The two guide rail adapter plates are fixedly connected to both sides of the lead screw adapter plate. The double guide rails are chosen because the double guide rails have higher positioning accuracy and better positioning stability than the single guide rails.

[0020] The rotating carbon fiber laying auxiliary fixture based on the zero-point positioning quick-change device described above has a symmetrical structure formed by connecting two guide rail adapter plates and a lead screw adapter plate.

[0021] The rotary carbon fiber laying auxiliary fixture based on the zero-point positioning quick-change device, as described above, further includes a base plate and a top cover plate.

[0022] The base plate is a vertical plate located on the side of the lifting mechanism. Its front side is fixedly connected to two guide rails, and its bottom side is fixedly connected to the base.

[0023] The top cover is a horizontal plate, which is located above the base plate and is fixedly connected to it;

[0024] A lead screw upper fixing block is installed on the lower surface of the top cover plate; the lead screw passes through the lead screw upper fixing block and the top cover plate and is connected to the rotating device.

[0025] As described above, a rotary carbon fiber laying auxiliary fixture based on a zero-point positioning quick-change device uses a height adjustment handwheel as the rotating mechanism. This manual mechanical structure (i.e., the adjustment handwheel) is used instead of an electric or electronically controlled system. Its main advantages are low cost, simple maintenance, and the fact that the manual mechanical structure can fully meet the expected design requirements. The lifting mechanism also includes a height locking wrench, which is connected to the top cover plate by bolts. The top cover plate has a threaded hole that mates with the bolt. The threaded hole is a horizontal hole and communicates with a through hole in the top cover plate through which the lead screw passes. The bolt is longer than the threaded hole. The purpose of the height locking wrench is to fix the moving worktable in a specific position, preventing the moving worktable and its connected parts from moving downwards under gravity, and also preventing technicians from accidentally changing the set position of the moving worktable by touching the height adjustment handwheel.

[0026] The rotary carbon fiber laying auxiliary fixture based on the zero-point positioning quick-change device, as described above, further includes reinforcing ribs; the reinforcing ribs are vertical plates, which are fixedly connected to the back of the substrate and the upper surface of the base. The reinforcing ribs are used to improve the structural strength of the entire fixture in the height direction and prevent the substrate from buckling due to excessive load.

[0027] Beneficial effects

[0028] (1) The present invention provides a rotary carbon fiber laying auxiliary clamp based on a zero-point positioning quick-change device, which can realize auxiliary clamping for laying carbon fiber on the surface of a single rotary body or a double rotary body with a height range of 20 to 520 mm (height refers to the length of the rotary body on the central axis) and a rotation radius of 12 to 100 mm (radius refers to the maximum distance from the surface of the rotary body to the central axis).

[0029] (2) The rotating carbon fiber laying auxiliary clamp based on the zero-point positioning quick-change device of the present invention can ensure that the coincidence of the central axis of the clamped rotating body is within 0.005mm when laying and clamping carbon fiber of double rotating core material.

[0030] (3) The present invention provides a rotary carbon fiber laying auxiliary fixture based on a zero-point positioning quick-change device, which is simple to operate, quick to change, has a large adjustment range, and high processing efficiency. Attached Figure Description

[0031] Figure 1 This invention relates to a rotary carbon fiber laying auxiliary fixture based on a zero-point positioning quick-change device;

[0032] Figure 2 and Figure 3 This is a diagram illustrating the application process of a rotary carbon fiber laying auxiliary fixture based on a zero-point positioning quick-change device according to the present invention.

[0033] Figure 4This is an existing technology for a rotating carbon fiber layup auxiliary fixture;

[0034] Among them, 1-height adjustment handwheel, 2-top cover plate, 3-height locking wrench, 4-guide rail, 5-lead screw, 6-reinforcing rib, 7-lead screw adapter plate, 8-guide rail adapter plate, 9-moving worktable, 10-zero point positioning quick change device, 11-base plate, 12-lower fixing block of lead screw, 13-fixed worktable, 14-base, 15-rotating body a, 16-carbon fiber filament, 17-carbon fiber fixing frame, 18-carbon fiber raw material rack, 19-roller, 20-resin tank, 21-rotating body b, 22-rotating body c, 23-chuck, 24-center, 25-rotating body d. Detailed Implementation

[0035] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0036] A rotating carbon fiber laying auxiliary fixture based on a zero-point positioning quick-change device, such as Figure 1 As shown, it includes a base 14 as a fixture base, a fixed workbench 13 is bolted to the top of the base 14, and a base plate 11 is fixedly connected to the top of the base 14. The base plate 11 is a vertical plate and its bottom surface is fixedly connected to the base 14.

[0037] The back of the substrate 11 is bolted with a reinforcing rib 6, which is a vertical plate and is bolted to the upper surface of the base 14.

[0038] A top cover plate 2 is bolted to the top of the substrate 11. The top cover plate 2 is a horizontal plate and has a through hole in the vertical direction. Below the through hole, a screw upper fixing block is connected to the lower surface of the top cover plate 2.

[0039] A lead screw 5 is connected to the front of the base plate 11. The lower end of the lead screw 5 is rotatably connected to the lower fixing block 12 of the lead screw. The lower fixing block 12 of the lead screw is installed on the base 14. The upper end of the lead screw 5 passes through the upper fixing block of the lead screw and the through hole on the top cover plate 2 from bottom to top and is connected to the height adjustment handwheel 1.

[0040] Two guide rails 4 are also connected to the front of the base plate 11 by bolts. The two guide rails 4 are parallel to each other, perpendicular to the base along the height direction, and symmetrically distributed on both sides of the lead screw 5. Each guide rail 4 is slidably connected to a guide rail adapter plate 8, and a lead screw adapter plate 7 is connected between the two guide rail adapter plates 8 by bolts. The whole structure formed by the connection of the two guide rail adapter plates 8 and the lead screw adapter plate 7 is symmetrical.

[0041] The lead screw adapter plate 7 is a vertical plate with two opposing vertical surfaces. The side facing the base plate 11 is engaged with the lead screw 5 through the lead screw helical surface, and the side facing away from the base plate 11 is connected to a movable worktable 9 by bolts.

[0042] The mobile worktable 9 has a T-shaped plate structure, including a vertical part and a horizontal part that is integrally connected to one side of the vertical part. The vertical part is connected to the lead screw adapter plate 7 by bolts, and an upper zero point positioning module is fixedly connected to the lower surface of the horizontal part.

[0043] A lower zero-point positioning module is connected to the upper surface of the fixed worktable 13. The lower zero-point positioning module and the upper zero-point positioning module are installed opposite each other and the central axis coincidence accuracy is within 0.005mm.

[0044] A threaded hole is also provided on the side of the top cover plate 2. The threaded hole is a horizontal hole and is connected to a through hole provided in the top cover plate 2 for the lead screw 5 to pass through. A height locking wrench 3 is installed in the threaded hole by a bolt that mates with it. The length of the bolt is greater than the length of the threaded hole.

[0045] In use, rotating the height adjustment handwheel 1 drives the lead screw 5 to rotate, which in turn drives the moving worktable 9 to move in the height direction, thus enabling the two zero-point positioning modules to move relative to each other.

[0046] The auxiliary fixture of the present invention is used for carbon fiber placement and processing of single / double rotating core materials, as illustrated below with specific embodiments:

[0047] Example 1

[0048] like Figure 2 As shown, the rotating body a 15 is the core material of the rotating body, with its two ends clamped in the upper zero-point positioning module located on the moving worktable 9 and the lower zero-point positioning module located on the fixed worktable 13, respectively. The part of the rotating body a 15 clamped by the upper and lower zero-point positioning quick-change devices is a regular cylinder with a diameter of 20 mm and a height of 40 mm. The carbon fiber filament 16 is drawn out from the carbon fiber raw material 18 and conveyed by the roller 19 immersed in the resin pool 20. The carbon fiber filament 16 fully contains the resin and other binders, and is subsequently fixed by the separation of the carbon fiber fixing frame 17, and finally wound onto the rotating body a 15. The radial runout error of the outer surface of the part obtained by carbon fiber laying relative to the central axis of the rotating body a 15 does not exceed 0.005 mm.

[0049] Example 2

[0050] like Figure 3 As shown, rotating bodies b 21 and c 22 are rotating body core materials, respectively clamped in the upper zero-point positioning module on the moving worktable 9 and the lower zero-point positioning module on the fixed worktable 13. The part of rotating body b 21 clamped by the upper zero-point positioning quick-change device is a regular cylinder with a diameter of 20mm and a height of 40mm. The part of rotating body c 22 clamped by the lower zero-point positioning quick-change device is a regular cylinder with a diameter of 20mm and a height of 40mm. The overlap of the central axes of rotating bodies b 21 and c 22 is within 0.005mm. The carbon fiber filament 16 is drawn out from the carbon fiber raw material 18 and conveyed by the roller 19 immersed in the resin pool 20, so that the carbon fiber filament 16 fully includes the resin and other binders. Subsequently, it is fixed by the separation of the carbon fiber fixing frame 17 and finally wound onto rotating bodies b 21 and c 22, and the two rotating body core materials are connected together by the surface carbon fiber laying. The radial runout error of the outer surface of the part obtained by carbon fiber laying relative to the central axis of rotating body b 21 and rotating body c 22 does not exceed 0.005mm.

[0051] In practical applications, this invention can be applied to the laying of carbon fiber on the rotating surface of saddle-shaped rotating bodies, waist-shaped rotating bodies, conical rotating bodies, and other complex rotating bodies, as long as the part of the rotating body held by the zero-point positioning module meets the size requirements of the zero-point positioning module.

Claims

1. A rotating carbon fiber laying auxiliary fixture based on a zero-point positioning quick-change device, characterized in that, It includes a zero-point positioning quick-change device (10) and a lifting mechanism; the zero-point positioning quick-change device (10) includes an upper zero-point positioning module and a lower zero-point positioning module installed opposite each other and whose central axis coincidence accuracy is within 0.005mm; the lifting mechanism is used to drive the upper zero-point positioning module to perform lifting and lowering movements; The rotating carbon fiber laying auxiliary fixture also includes a movable worktable (9) and a fixed worktable (13); the upper zero-point positioning module is fixed below the movable worktable (9), and the lower zero-point positioning module is fixed above the fixed worktable (13); the lifting mechanism is used to drive the movable worktable (9) to move up and down. The lifting mechanism includes a lead screw (5), a guide rail (4), a rotating device, a lead screw adapter plate (7), and a guide rail adapter plate (8). The lead screw (5) and the guide rail (4) are vertically installed on the same side of the zero-point positioning quick-change device (10); The lower end of the lead screw (5) is rotatably connected to the lower fixing block of the lead screw mounted on the base (14), and the upper end is connected to the rotating device; The lead screw adapter plate (7) is a vertical plate containing two opposing vertical surfaces. One surface is engaged with the lead screw (5) through the lead screw helical surface, and the other surface is fixedly connected to the movable worktable (9). The lead screw adapter plate (7) is fixedly connected to the guide rail adapter plate (8), and the guide rail adapter plate (8) is slidably connected to the guide rail (4); The mobile worktable (9) is a T-shaped plate structure, consisting of a vertical part and a horizontal part located on one side of the vertical part. The vertical part is fixedly connected to the lead screw adapter plate (7), and the horizontal part is fixedly connected to the upper zero point positioning module. The number of guide rails (4) and guide rail adapter plates (8) is two; the two guide rails (4) are symmetrically distributed on both sides of the lead screw (5); the two guide rail adapter plates (8) are fixedly connected to both sides of the lead screw adapter plate (7); The two guide rail adapter plates (8) and the lead screw adapter plate (7) are connected to form a symmetrical structure.

2. The rotary carbon fiber laying auxiliary fixture based on a zero-point positioning quick-change device according to claim 1, characterized in that, The rotating carbon fiber laying auxiliary fixture also includes a base (14); a fixed worktable (13) is mounted on the base (14).

3. The rotary carbon fiber laying auxiliary fixture based on a zero-point positioning quick-change device according to claim 1, characterized in that, The rotating carbon fiber layup auxiliary fixture also includes a substrate (11) and a top cover plate (2). The base plate (11) is a vertical plate located on the side of the lifting mechanism. Its front surface is fixedly connected to two guide rails (4), and its bottom surface is fixedly connected to the base (14). The top cover (2) is a horizontal plate, which is located above the base plate (11) and is fixedly connected to it; The upper fixing block of the lead screw is installed on the lower surface of the top cover plate (2); the lead screw (5) passes through the upper fixing block of the lead screw and the top cover plate (2) and is connected to the rotating device.

4. The rotary carbon fiber laying auxiliary fixture based on a zero-point positioning quick-change device according to claim 3, characterized in that, The rotating device is a height adjustment handwheel (1); the lifting mechanism also includes a height locking wrench (3), which is connected to the top cover plate (2) by bolts. The top cover plate (2) is provided with a threaded hole that mates with the bolt. The threaded hole is a horizontal hole and is connected to the through hole in the top cover plate (2) through which the lead screw (5) passes. The length of the bolt is greater than that of the threaded hole.

5. A rotary carbon fiber laying auxiliary fixture based on a zero-point positioning quick-change device according to claim 3, characterized in that, The rotating carbon fiber laying auxiliary fixture also includes a reinforcing rib (6); the reinforcing rib (6) is a vertical plate, which is fixedly connected to the back of the substrate (11) and the upper surface of the base (14).

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