Potting device and potting method for a longeron

Abstract

The application discloses a pouring device and a pouring method for a long beam, and belongs to the technical field of long beam testing. The pouring device comprises a mounting platform, a supporting seat on the mounting platform, a positioning reference block mounted on the supporting seat, a groove body provided on the front end face of the positioning reference block, the groove body penetrating through the positioning reference block from top to bottom and forming first and second groove walls parallel to each other and spaced apart in a first horizontal direction and a third groove wall arranged between the first and second groove walls on the positioning reference block, a clamping mechanism arranged on the supporting seat and used for clamping the long beam on the positioning reference block, an angle box seated on the mounting platform, and first and second positioning mechanisms used for positioning the angle box in the first and second horizontal directions respectively. The pouring method is completed by using the pouring device for the long beam. The application solves the problem that the prior art pouring tool cannot realize accurate positioning of the long beam, resulting in a size difference of a test piece after pouring and affecting the test.

Description

Technical Field

[0001] This invention relates to the field of stringer testing technology, and more particularly to a potting device and potting method for stringers. Background Technology

[0002] As a typical structure in composite materials, stringers require extensive mechanical testing during product structural design. Tests such as stringer compression, pressure loss, and stability often necessitate potting the test specimens. The potting process involves several steps, including metal corner box design, corner box fabrication, selection of potting resin materials, potting, and post-potting machining. Potting is a crucial step in ensuring the test specimens pass quality. However, existing potting fixtures cannot accurately position the stringers, making it difficult to guarantee the flatness of the end faces and the perpendicularity of the stringer's film-coated surface after potting. This results in dimensional discrepancies in the potted specimens, affecting the accuracy of test results and potentially rendering the test impossible to conduct, leading to the scrapping of the test specimens. Summary of the Invention

[0003] The purpose of this invention is to provide a potting device and potting method for long stringers, which can solve the problem that the potting fixtures in the prior art cannot achieve accurate positioning of the long stringers, resulting in dimensional differences in the test specimens after potting and affecting the test.

[0004] To achieve the above objectives, the following technical solution is provided:

[0005] A potting device for a stringer, comprising:

[0006] The mounting platform and the support base vertically mounted on the mounting platform;

[0007] A positioning reference block is installed on the support base; a groove is provided on the front end face of the positioning reference block, the groove runs through the positioning reference block from top to bottom, and forms a first groove wall and a second groove wall that are parallel to each other and spaced apart along a first horizontal direction, and a third groove wall provided between the first groove wall and the second groove wall. The first groove wall, the second groove wall and the third groove wall are all parallel to the vertical direction.

[0008] A clamping mechanism, provided on the support base, is used to clamp the stringer onto the positioning reference block;

[0009] The corner box is located on the mounting platform;

[0010] The first positioning mechanism and the second positioning mechanism are respectively used to position the corner box in the first horizontal direction and the second horizontal direction, wherein the first horizontal direction is perpendicular to the second horizontal direction.

[0011] Furthermore, the clamping mechanism includes:

[0012] The U-shaped frame includes two first supports arranged opposite each other along the first horizontal direction and a second support disposed between the two first supports; the free end of the first support is connected to the support base, and the second support and the third groove wall are arranged parallel to and spaced apart in the second horizontal direction; the second support has a first strip-shaped hole extending along the first horizontal direction.

[0013] The first adjusting bolt is provided through the first strip hole along the second horizontal direction to press the stringer tightly against the third groove wall;

[0014] Two adjusting nuts are respectively located on both sides of the second bracket along the second horizontal direction and screwed onto the first adjusting bolt.

[0015] Furthermore, the support base is provided with a first ear seat and a second ear seat opposite each other in the vertical direction, and the free end of the first bracket is located between the first ear seat and the second ear seat; the potting device also includes a pin, which passes through the first ear seat, the first bracket and the second ear seat from top to bottom.

[0016] Furthermore, the potting device also includes two connecting frames, which are respectively disposed on both sides of the support base along the first horizontal direction, and the first ear seat and the second ear seat are both disposed on the connecting frames.

[0017] Furthermore, the first positioning mechanism includes:

[0018] A mounting base is provided on the mounting platform;

[0019] Two positioning sliders are arranged opposite each other along the first horizontal direction, and the corner box is located between the two positioning sliders; a second strip-shaped hole extending along the first horizontal direction is provided on the positioning slider;

[0020] The second adjusting bolt is inserted into the second strip hole and is used to fasten the positioning slider to the mounting base along the second horizontal direction; the position of the second adjusting bolt in the second strip hole is adjustable along the first horizontal direction.

[0021] Furthermore, the second positioning mechanism includes:

[0022] The first positioning seat and the second positioning seat are both vertically disposed on the mounting platform; the first positioning seat and the second positioning seat are disposed opposite each other along the second horizontal direction.

[0023] The third adjusting bolt is disposed through the first positioning seat along the second horizontal direction;

[0024] The fourth adjusting bolt is disposed through the second positioning seat along the second horizontal direction, and the corner box abuts between the third adjusting bolt and the fourth adjusting bolt.

[0025] Furthermore, a first clearance groove is provided at the connection between the first groove wall and the third groove wall; a second clearance groove is provided at the connection between the second groove wall and the third groove wall.

[0026] Furthermore, it also includes:

[0027] A weight block is used to press against the top of the stringer; the weight block is detachably mounted on the top of the support base.

[0028] Furthermore, multiple positioning reference blocks and clamping mechanisms are arranged vertically and correspond one-to-one; the positions of the positioning reference blocks and clamping mechanisms on the support base are adjustable vertically.

[0029] The filling method implemented using any of the filling devices described above includes the following steps:

[0030] S1: Angle box positioning: Angle box is positioned on the installation platform using the first and second positioning mechanisms;

[0031] S2: Add resin into the corner box;

[0032] S3: Positioning and clamping the stringer: First, make the film-coated surface of the stringer fit against the third groove wall of the positioning reference block, and make the side of the stringer perpendicular to the film-coated surface fit against the first groove wall of the positioning reference block. Then, make the bottom end of the stringer fit against the bottom surface of the corner box. Finally, use the clamping mechanism to clamp the stringer onto the positioning reference block.

[0033] S4: Keep for a certain period of time until the resin cures;

[0034] S5: Remove the stringer and corner box from the potting device;

[0035] S6: Repeat steps S1-S2 and rotate the stringer 180°;

[0036] S7: Repositioning and clamping the stringer: First, keep the film-coated surface of the stringer in step S3 still in contact with the third groove wall of the positioning reference block. Then, the side of the stringer that is in contact with the first groove wall in step S3 and is perpendicular to the film-coated surface should be in contact with the second groove wall of the positioning reference block. Finally, the top of the stringer in step S3 should be in contact with the bottom surface of the corner box. Finally, use the clamping mechanism to clamp the stringer onto the positioning reference block.

[0037] S8: Hold for a certain period of time until the resin cures;

[0038] S9: Remove the stringer and corner box from the potting device; potting complete.

[0039] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0040] 1) This potting device first places the corner box on the mounting platform, and then uses a first positioning mechanism and a second positioning mechanism to achieve stable and precise placement of the corner box. Next, a positioning reference block is set up, and a first, second, and third groove wall are formed on the positioning reference block. These three groove walls can all serve as positioning reference surfaces to position the stringer. After positioning, a clamping mechanism is used to clamp the stringer, achieving accurate and stable placement. Positioning both the corner box and the stringer ensures the stability of the potting process, which in turn ensures the flatness of the end face of the potted test piece and the perpendicularity of the stringer's film-coated surface, resulting in better dimensions of the potted test piece and reducing the impact on the accuracy of the test results. Furthermore, the potting device is applicable to stringers and corner boxes of different sizes, improving the overall applicability of the potting device.

[0041] 2) This potting method can pot the top and bottom of the stringer. Before potting each end, corner box positioning and stringer positioning are required. After the stringer is positioned, it is clamped by a clamping mechanism to obtain a test piece with better dimensions. At the same time, since the third groove wall of the positioning reference block is in contact with the film surface of the stringer during the two potting positioning, and the first and second groove walls of the positioning reference block are in contact with the same side perpendicular to the film surface, a symmetrical positioning reference is adopted. This effectively avoids the positioning error caused by the two sides of the stringer perpendicular to the film surface having processing errors that cannot guarantee parallelism, thus ensuring the final potting accuracy. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the filling device (with a stringer and a corner box) in an embodiment of the present invention. Figure 1 ;

[0043] Figure 2 This is a schematic diagram of the filling device (with a stringer and a corner box) in an embodiment of the present invention. Figure 2 ;

[0044] Figure 3 This is a schematic diagram of the filling device (without the stringer and corner box) in an embodiment of the present invention;

[0045] Figure 4 This is a schematic diagram of the positioning reference block in an embodiment of the present invention.

[0046] Figure label:

[0047] 100. Long stringer; 200. Corner box;

[0048] 10. Mounting platform; 20. Support base; 30. Positioning reference block; 40. Clamping mechanism; 50. First positioning mechanism; 60. Second positioning mechanism; 70. Weight block; 80. Connecting frame; 90. Reinforcing rib;

[0049] 31. First groove wall; 32. Second groove wall; 33. Third groove wall; 34. First clearance groove; 35. Second clearance groove; 41. U-shaped frame; 42. First adjusting bolt; 43. Adjusting nut; 51. Mounting base; 52. Positioning slider; 53. Second adjusting bolt; 61. First positioning seat; 62. Second positioning seat; 63. Third adjusting bolt; 64. Fourth adjusting bolt; 81. First ear seat; 82. Second ear seat; 83. Connecting plate; 84. Pin body;

[0050] 411. First bracket; 412. Second bracket; 511. Mounting block; 512. Connecting block; 521. Second strip hole;

[0051] 4121. First strip hole. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0053] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0054] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0055] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0056] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0057] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0058] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0059] This embodiment provides a potting device for a stringer, used to perform a potting operation on the stringer; specifically, the stringer is generally placed vertically, and this potting device is used to pot both the top and bottom ends of the stringer along its height direction. Figure 1-3As shown, the potting device includes a mounting platform 10 and a support base 20 vertically mounted on the mounting platform 10. It also includes a positioning reference block 30, a clamping mechanism 40, a corner box 200, a first positioning mechanism 50, and a second positioning mechanism 60. The corner box 200 is positioned on the mounting platform 10 and is positioned in a first horizontal direction (i.e., the X direction in the drawing) and a second horizontal direction (i.e., the Y direction in the drawing) by the first positioning mechanism 50 and the second positioning mechanism 60, respectively. The first horizontal direction is perpendicular to the second horizontal direction; here, the first horizontal direction can be understood as the left-right direction, and the second horizontal direction can be understood as the front-back direction. The positioning reference block 30 is mounted on the support base 20; see reference. Figure 4 A groove is provided on the front end face of the positioning reference block 30, which runs through the positioning reference block 30 from top to bottom. A first groove wall 31 and a second groove wall 32, which are parallel to each other and spaced apart along a first horizontal direction, and a third groove wall 33, which is located between the first groove wall 31 and the second groove wall 32, are formed on the positioning reference block 30. The first groove wall 31, the second groove wall 32, and the third groove wall 33 are all parallel to the vertical direction (i.e., the Z direction in the attached figure). A clamping mechanism 40 is provided on the support base 20 and is used to clamp the stringer 100 onto the positioning reference block 30.

[0060] In specific implementation, the first groove wall 31, the second groove wall 32 and the third groove wall 33 are used as positioning reference surfaces for the stringer 100 to perform positioning operations on the stringer 100. When the stringer 100 is placed vertically, it not only has a top and bottom end along the vertical direction, but also has a film-coating surface and two sides perpendicular to the film-coating surface. When the stringer 100 is placed on the potting device, its rear side is the film-coating surface, and its left and right sides are the sides perpendicular to the film-coating surface. Specifically, the third groove wall 33 is used to adhere to the film-coating surface of the stringer 100, and the first groove wall 31 or the second groove wall 32 is used to adhere to the side of the stringer 100 perpendicular to the film-coating surface, thereby enabling the stringer 100 to be positioned in the horizontal direction. The stringer 100 is placed in the corner box 200 of the mounting platform 10 by free fall, so the bottom end of the stringer 100 can abut against the bottom surface of the corner box 200 for vertical positioning. Then, the clamping mechanism 40 is used to clamp the stringer 100 onto the positioning reference block 30, thereby enabling the stringer 100 to be positioned on the potting device.

[0061] The potting device provided in this embodiment can position both the corner box 200 and the stringer 100, ensuring the stability of the potting process. This also guarantees the flatness of the end face of the potted test piece and the perpendicularity of the film-coated surface of the stringer 100, resulting in better dimensions of the potted test piece and reducing the impact on the accuracy of the test results. Since the side of the stringer 100 perpendicular to the film-coated surface only needs to be fitted with either the first groove wall 31 or the second groove wall 32 to achieve positioning in the corresponding direction, the horizontal distance between the first groove wall 31 and the second groove wall 32 can be set sufficiently large to accommodate stringers 100 of different widths. In this embodiment, the horizontal distance between the first groove wall 31 and the second groove wall 32 is set to 240mm to accommodate most stringers 100. Furthermore, since the corner box 200 is positioned on the mounting platform 10 through the first positioning mechanism 50 and the second positioning, the size of the corner box 200 can be adapted to change at any time according to the different size specifications of the stringer 100, thus improving the applicability of the potting device. Compared with the prior art, which requires the customization of different specifications of potting fixtures for stringers 100 of different sizes, the potting fixture of this embodiment significantly shortens the manufacturing cycle of the fixture.

[0062] Further, refer to Figure 4 A first clearance groove 34 is provided at the connection between the first groove wall 31 and the third groove wall 33; a second clearance groove 35 is provided at the connection between the second groove wall 32 and the third groove wall 33. Since the corner dimensions of the stringer 100 product have certain cutting tolerances during material preparation, the perpendicularity between the film-coated surface of the stringer 100 and the side perpendicular to the film-coated surface may not be precisely guaranteed. Providing clearance grooves at the connection between the first groove wall 31 (or the second groove wall 32) and the third groove wall 33 can provide space for the stringer 100 to compensate for errors, allowing the corresponding surface of the stringer 100 to fit as closely as possible to the positioning reference surface, thereby improving the positioning accuracy of the stringer 100.

[0063] Specifically, multiple positioning reference blocks 30 and clamping mechanisms 40 are arranged vertically and correspond one-to-one, meaning each positioning reference block 30 corresponds to one clamping mechanism 40, so that the stringer 100 can be reliably positioned on the support base 20, which is especially suitable for stringers 100 with larger height dimensions. Furthermore, the positions of the positioning reference blocks 30 and clamping mechanisms 40 on the support base 20 are adjustable vertically. That is, for stringers 100 of different heights, the required height of the positioning reference blocks 30 and clamping mechanisms 40 to keep them stable is different. Therefore, setting the positioning reference blocks 30 and clamping mechanisms 40 to be height adjustable can match the positioning of stringers 100 of different heights.

[0064] More specifically, the positioning reference block 30 is located on the front end face of the support base 20; the positioning reference block 30 and the support base 20 are installed together by fastening bolts. Multiple threaded holes are formed vertically on the support base 20. The fastening bolts pass through the third groove wall 33, through the positioning reference block 30, and are screwed into the threaded holes of the support base 20 to install the positioning reference block 30. In practice, the height of the positioning reference block 30 can be changed by screwing it into threaded holes of different heights. Optionally, each positioning reference block 30 is fixed by four rectangularly distributed fastening bolts to improve assembly stability.

[0065] Specifically, please refer to Figure 1-3 The clamping mechanism 40 includes a U-shaped frame 41, a first adjusting bolt 42, and two adjusting nuts 43. The U-shaped frame 41 includes two first supports 411 arranged opposite each other along a first horizontal direction and a second support 412 located between the two first supports 411. The free end of the first support 411 is connected to the support base 20. The second support 412 is parallel to and spaced apart from the third groove wall 33 in a second horizontal direction. A first strip hole 4121 extending along the first horizontal direction is provided on the second support 412. The first adjusting bolt 42 is arranged through the first strip hole 4121 along the second horizontal direction to press the stringer 100 tightly against the third groove wall 33. The two adjusting nuts 43 are respectively located on both sides of the second support 412 along the second horizontal direction and screwed onto the first adjusting bolt 42. In practice, through the cooperation of two adjusting nuts 43 and the first adjusting bolt 42, the first adjusting bolt 42 can be stably held at a specific position along the second horizontal direction, thereby clamping the stringer 100 against the third groove wall 33 of the positioning reference block 30. Simultaneously, the position of the first adjusting bolt 42 within the first strip hole 4121 is adjustable along the first horizontal direction to accommodate clamping stringers 100 of different widths, further improving the applicability of the entire potting device. Since the stringer 100 is positioned on the support base 20, the U-shaped frame 41 is also located on the support base 20, ensuring that the stringer 100 is always under internal stress during clamping, without introducing external forces. Compared to setting the clamping mechanism 40 on the mounting platform 10, this eliminates the possibility of deformation of the support base 20 during clamping, and is less likely to affect the perpendicularity or flatness of the test piece.

[0066] Furthermore, the support base 20 has a first ear seat 81 and a second ear seat 82 arranged opposite each other in the vertical direction, and the free end of the first bracket 411 is located between the first ear seat 81 and the second ear seat 82; the potting device also includes a pin 84, which passes through the first ear seat 81, the first bracket 411 and the second ear seat 82 from top to bottom. The pin 84 is used to realize the assembly between the U-shaped frame 41 and the support base 20, which is convenient for disassembly and also allows the U-shaped frame 41 to have a certain amount of room for movement, making it easier to perform the clamping operation of the first adjusting bolt 42.

[0067] The potting device also includes two connecting frames 80, which are respectively located on both sides of the support base 20 along the first horizontal direction. The first ear seat 81 and the second ear seat 82 are both located on the connecting frames 80. Furthermore, the first ear seat 81 and the second ear seat 82 are both located on the same connecting plate 83, and by placing the connecting plate 83 on the connecting frame 80, it is easier to assemble the two ear seats. Specifically, the connecting plate 83 and the connecting frame 80 are also fastened together by fastening bolts. Multiple threaded holes distributed vertically are provided on the side of the connecting frame 80. Depending on the height requirements of the clamping mechanism 40, the fastening bolts are selected and screwed into different threaded holes to achieve height adjustment of the clamping mechanism 40.

[0068] Specifically, the first positioning mechanism 50 includes a mounting base 51, positioning sliders 52, and a second adjusting bolt 53. The mounting base 51 is mounted on the mounting platform 10. Two positioning sliders 52 are arranged opposite each other along the first horizontal direction, and the corner box 200 is limited between the two positioning sliders 52. A second strip-shaped hole 521 extending along the first horizontal direction is opened on the positioning slider 52. The second adjusting bolt 53 is inserted into the second strip-shaped hole 521 to fasten the positioning slider 52 to the mounting base 51 along the second horizontal direction. The position of the second adjusting bolt 53 in the second strip-shaped hole 521 is adjustable along the first horizontal direction. In specific implementation, when the second adjusting bolt 53 is loosened, the positioning slider 52 can slide along the first horizontal direction, thereby adjusting the distance between the two positioning sliders 52 to accommodate the placement of corner boxes 200 of different lengths or to change the placement position of the corner box 200 in the first horizontal direction. After the corner box 200 is placed, the second adjusting bolt 53 is tightened, and the corner box 200 is limited in the first horizontal direction. Furthermore, the end face of the positioning slider 52 that abuts against the corner box 200 is an arc-shaped surface, meaning it makes line contact with the corner box 200 to achieve positioning and will not excessively compress the corner box 200, causing it to warp. In this embodiment, the horizontal distance between the first groove wall 31 (or the second groove wall 32) and the arc-shaped surface of the positioning slider 52 on the same side is 5-100mm. This size range can almost meet the usage requirements of most corner boxes 200.

[0069] The second positioning mechanism 60 includes a first positioning seat 61, a second positioning seat 62, a third adjusting bolt 63, and a fourth adjusting bolt 64. Both the first positioning seat 61 and the second positioning seat 62 are vertically mounted on the mounting platform 10. The first positioning seat 61 and the second positioning seat 62 are positioned opposite each other along a second horizontal direction. The third adjusting bolt 63 passes through the first positioning seat 61 along the second horizontal direction. The fourth adjusting bolt 64 passes through the second positioning seat 62 along the second horizontal direction. The corner box 200 abuts against the third adjusting bolt 63 and the fourth adjusting bolt 64 to achieve a limiting position. In specific implementations, by adjusting the third adjusting bolt 63 and the fourth adjusting bolt 64, the placement position of the corner box 200 in the second horizontal direction can be changed, or it can be adapted to corner boxes 200 of different widths. In this embodiment, the third groove wall 33 and the first positioning seat 61 are parallel to each other, and the horizontal distance between them in the second horizontal direction can be designed to be 45mm. This distance value can meet the placement of most corner boxes 200. In specific implementation, the position of the corner box 200 in the second horizontal direction can be finely adjusted as needed using the third adjusting bolt 63 and the fourth adjusting bolt 64.

[0070] Specifically, refer to Figure 1 and Figure 2The mounting base 51 includes two mounting blocks 511 spaced apart along a first horizontal direction and a connecting block 512 connecting the two mounting blocks 511; optionally, the mounting blocks 511 and the connecting block 512 are an integral structure. Further, the support seat 20 is vertically mounted on the connecting block 512, meaning the support seat 20 rests on the mounting platform 10 via the mounting base 51. In specific implementations, the support seat 20 can be fixed to the connecting block 512 by welding, forming an integral structure with the mounting base 51, thus facilitating installation and handling. Further, the mounting base 51 and the mounting platform 10 are connected by fastening bolts; that is, the mounting base 51 and the mounting platform 10 are a separable structure. This arrangement not only facilitates the manufacturing of various components but also allows adjustment of the horizontality of the mounting base 51 by the preload of the fastening bolts, thereby adjusting the verticality of the support seat 20 on it, and consequently, adjusting the verticality of the positioning reference surface on the corresponding positioning reference block 30. Specifically, during the installation of the potting device, the mounting base 51 is first fixed to the mounting platform 10 using fastening bolts. This process can be assisted by a laser tracker to ensure the verticality of the support 20. Only when the verticality of the support 20 is guaranteed can the verticality of the first groove wall 31, the second groove wall 32, and the third groove wall 33 of the positioning reference block 30 installed on it be more easily adjusted. Then, the positioning reference block 30 and the support 20 are installed using fastening bolts. With the assistance of the laser tracker, the verticality of the first groove wall 31, the second groove wall 32, and the third groove wall 33 on the positioning reference block 30 is ensured by adjusting the pre-tightening force of the fastening bolts. All of the above installation operations are ultimately for the purpose of achieving precise positioning of the stringer 100.

[0071] Optionally, a reinforcing rib 90 is provided between the support base 20 and the mounting block 511 to improve the stability of the support base 20. Optionally, the first positioning seat 61 is located on the connecting block 512 and fastened to the support base 20; thus, when disassembling the mounting base 51, the first positioning seat 61 can be removed together.

[0072] Furthermore, the potting device also includes a weight block 70, which is used to press against the top of the stringer 100 to ensure that the bottom end of the stringer 100 is in full contact with the bottom surface of the corner box 200 and the corner box 200 is in full contact with the mounting platform 10, thereby improving the potting quality. In specific implementation, the weight block 70 is detachably installed on the top of the support base 20. The weight block 70 can be placed on the support base 20 when not in use, and can be removed and applied to the stringer 100 when needed.

[0073] This embodiment also provides a potting method using the above-described potting device, specifically including the following steps:

[0074] S1: Angle box 200: Angle box 200 is positioned on mounting platform 10 using first positioning mechanism 50 and second positioning mechanism 60;

[0075] S2: Add resin into corner box 200;

[0076] S3: Positioning and clamping the stringer 100: First, make the film-coated surface of the stringer 100 fit with the third groove wall 33 of the positioning reference block 30, and make the side of the stringer 100 perpendicular to the film-coated surface fit with the first groove wall 31 of the positioning reference block 30. Then, make the bottom end of the stringer 100 fit with the bottom surface of the corner box 200. Finally, use the clamping mechanism 40 to clamp the stringer 100 onto the positioning reference block 30.

[0077] S4: Keep for a certain period of time until the resin cures;

[0078] S5: Remove the stringer 100 and corner box 200 from the potting device;

[0079] S6: Repeat steps S1-S2 and rotate stringer 100 by 180°;

[0080] S7: Repositioning and clamping the stringer 100: First, the film-coated surface of the stringer 100 in step S3 is still in contact with the third groove wall 33 of the positioning reference block 30. Then, the side of the stringer 100 that is in contact with the first groove wall 31 in step S3 and is perpendicular to the film-coated surface is in contact with the second groove wall 32 of the positioning reference block 30. The top end of the stringer 100 in step S3 (i.e. the bottom end of the stringer 100 at this time) is in contact with the bottom surface of the corner box 200. Finally, the clamping mechanism 40 is used to clamp the stringer 100 onto the positioning reference block 30.

[0081] S8: Hold for a certain period of time until the resin cures;

[0082] S9: Remove the stringer 100 and corner box 200 from the potting device; potting is complete.

[0083] In step S1, the position of the corner box 200 on the installation platform 10 is calculated based on the dimensions of the stringer 100 to be potted and the dimensions of the corner box 200. In practice, the first positioning mechanism 50 and the second positioning mechanism 60 are used to fine-tune the position of the corner box 200 until the corner box 200 is placed in the target position.

[0084] This potting method can pot the top and bottom of the stringer 100. Before potting each end, the corner box 200 and the stringer 100 need to be positioned. After the stringer 100 is positioned, it is clamped by the clamping mechanism 40 to obtain a test piece with better dimensions. At the same time, since the third groove wall 33 of the positioning reference block 30 is in contact with the film surface of the stringer 100 during the two potting positioning, and the first groove wall 31 and the second groove wall 32 of the positioning reference block 30 are in contact with the same side perpendicular to the film surface, a symmetrical positioning reference is adopted. This effectively avoids the positioning error caused by the two sides of the stringer 100 perpendicular to the film surface having processing errors that cannot guarantee parallelism, thus ensuring the final potting accuracy. If the stringer 100 is always positioned by the first groove wall 31 before and after it is rotated 180°, then the two different sides of the stringer 100 that are perpendicular to the film-coating surface will be in contact with the first groove wall 31. If the two sides have large processing errors and cannot be kept parallel, then the new sides need to be re-attached and positioned with the first groove wall 31 after rotation. This will significantly affect the flatness of the end face of the final test piece and the parallelism of the two end faces, resulting in poor potting quality or even scrapping of the test piece.

[0085] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A potting method, implemented using a potting device for a stringer, the potting device comprising: The mounting platform (10) and the support base (20) vertically mounted on the mounting platform (10); A positioning reference block (30) is installed on the support base (20); a groove is provided on the front end face of the positioning reference block (30), the groove runs through the positioning reference block (30) from top to bottom, and forms a first groove wall (31) and a second groove wall (32) that are parallel to each other and spaced apart along the first horizontal direction on the positioning reference block (30), and a third groove wall (33) provided between the first groove wall (31) and the second groove wall (32). The first groove wall (31), the second groove wall (32) and the third groove wall (33) are all parallel to the vertical direction. A clamping mechanism (40) is provided on the support base (20) for clamping the stringer (100) onto the positioning reference block (30); An angle box (200) is located on the mounting platform (10); The first positioning mechanism (50) and the second positioning mechanism (60) are respectively used to position the corner box (200) in the first horizontal direction and the second horizontal direction, wherein the first horizontal direction is perpendicular to the second horizontal direction; The potting method is characterized by comprising the following steps: S1: Positioning corner box (200): Positioning corner box (200) on mounting platform (10) using first positioning mechanism (50) and second positioning mechanism (60); S2: Add resin into the corner box (200); S3: Positioning and clamping the stringer (100): First, make the film-coated surface of the stringer (100) fit with the third groove wall (33) of the positioning reference block (30), and make one side of the stringer (100) perpendicular to the film-coated surface fit with the first groove wall (31) of the positioning reference block (30). Then, make the bottom end of the stringer (100) fit with the bottom surface of the corner box (200). Finally, use the clamping mechanism (40) to clamp the stringer (100) onto the positioning reference block (30). S4: Keep for a certain period of time until the resin cures; S5: Remove the stringer (100) and corner box (200) from the potting device; S6: Repeat steps S1-S2 and rotate the stringer (100) 180°; S7: Repositioning and clamping the stringer (100): First, the film-coated surface of the stringer (100) in step S3 is still attached to the third groove wall (33) of the positioning reference block (30). The side of the stringer (100) that is attached to the first groove wall (31) in step S3 is then attached to the second groove wall (32) of the positioning reference block (30). The top of the stringer (100) in step S3 is attached to the bottom surface of the corner box (200). Finally, the clamping mechanism (40) is used to clamp the stringer (100) onto the positioning reference block (30). S8: Hold for a certain period of time until the resin cures; S9: Remove the stringer (100) and corner box (200) from the potting device; potting is complete.

2. The potting method according to claim 1, characterized in that, The clamping mechanism (40) includes: The U-shaped frame (41) includes two first supports (411) arranged opposite each other along the first horizontal direction and a second support (412) disposed between the two first supports (411); the free ends of the first supports (411) are connected to the support base (20), and the second support (412) is parallel to and spaced apart from the third groove wall (33) in the second horizontal direction; the second support (412) has a first strip hole (4121) extending along the first horizontal direction. The first adjusting bolt (42) is provided through the first strip hole (4121) along the second horizontal direction to press the stringer (100) tightly against the third groove wall (33); Two adjusting nuts (43) are respectively located on both sides of the second bracket (412) along the second horizontal direction and screwed onto the first adjusting bolt (42).

3. The potting method according to claim 2, characterized in that, The support base (20) has a first ear seat (81) and a second ear seat (82) arranged opposite each other in the vertical direction. The free end of the first bracket (411) is located between the first ear seat (81) and the second ear seat (82). The potting device also includes a pin (84), which passes through the first ear seat (81), the first bracket (411) and the second ear seat (82) from top to bottom.

4. The potting method according to claim 3, characterized in that, The potting device also includes two connecting frames (80), which are respectively located on both sides of the support base (20) along the first horizontal direction. The first ear seat (81) and the second ear seat (82) are both located on the connecting frames (80).

5. The potting method according to claim 1, characterized in that, The first positioning mechanism (50) includes: Mounting base (51) is provided on the mounting platform (10); Two positioning sliders (52) are arranged opposite each other along the first horizontal direction, and the corner box (200) is located between the two positioning sliders (52); a second strip hole (521) extending along the first horizontal direction is provided on the positioning slider (52). The second adjusting bolt (53) is inserted into the second strip hole (521) and is used to fasten the positioning slider (52) to the mounting base (51) along the second horizontal direction; the position of the second adjusting bolt (53) in the second strip hole (521) is adjustable along the first horizontal direction.

6. The potting method according to claim 1, characterized in that, The second positioning mechanism (60) includes: The first positioning seat (61) and the second positioning seat (62) are both vertically disposed on the mounting platform (10); the first positioning seat (61) and the second positioning seat (62) are disposed opposite each other along the second horizontal direction. The third adjusting bolt (63) is provided to pass through the first positioning seat (61) along the second horizontal direction; The fourth adjusting bolt (64) is disposed through the second positioning seat (62) along the second horizontal direction, and the corner box (200) abuts between the third adjusting bolt (63) and the fourth adjusting bolt (64).

7. The potting method according to claim 1, characterized in that, A first clearance groove (34) is provided at the connection between the first groove wall (31) and the third groove wall (33); a second clearance groove (35) is provided at the connection between the second groove wall (32) and the third groove wall (33).

8. The potting method according to claim 1, characterized in that, Also includes: A weight block (70) is used to press against the top of the stringer (100); the weight block (70) is detachably mounted on the top of the support base (20).

9. The potting method according to claim 1, characterized in that, Multiple positioning reference blocks (30) and clamping mechanisms (40) are arranged in the vertical direction and correspond one to one; the positions of the positioning reference blocks (30) and clamping mechanisms (40) on the support base (20) are adjustable in the vertical direction.

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