A composite bonding jig for parts
By designing a tooling for composite bonded parts, the precise positioning and reliable clamping of the parts are achieved by utilizing the positioning convex arc surfaces of the limiting end and the movable end, as well as the support seat. This solves the problem of poor adaptability of traditional tooling, improves processing accuracy and efficiency, and meets the high-precision processing requirements of the aerospace field.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU SIWI HIGH TECH IND GARDEN
- Filing Date
- 2025-08-01
- Publication Date
- 2026-07-14
Smart Images
Figure CN224488434U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machining technology, and more specifically, to a tooling for composite adhesive parts. Background Technology
[0002] In the fields of high-end equipment such as aviation and aerospace, composite bonded antennas, as a key irregular antenna component, are widely used in the communication, navigation and detection systems of various aircraft due to their unique structural design and excellent performance. These components are usually characterized by a wide variety and large batch production, while also imposing extremely stringent requirements on surface roughness and machining accuracy to ensure the stability and reliability of signal transmission.
[0003] To meet the aforementioned high-precision machining requirements, the industry generally uses five-axis machining centers for milling. Through complex motion trajectories of multi-axis linkage, precise cutting of complex curved surfaces of parts can be achieved. However, irregular structures bring many technical challenges to the machining process: on the one hand, the irregular shape of the parts makes it difficult to find a stable positioning reference during clamping, and the uneven distribution of clamping force can easily cause deformation of the parts, thus affecting the machining accuracy; on the other hand, traditional tooling fixtures are mostly general structures designed for standard parts, which cannot effectively fit the complex features of curved surfaces, inclined surfaces and other features of irregular parts, resulting in a significant decrease in positioning accuracy and often large repeatability errors, which is far from meeting the precision requirements of the aerospace field.
[0004] Furthermore, due to the lack of suitable tooling solutions, a significant amount of time is required for manual alignment and fixture adjustment before each processing, which greatly reduces processing efficiency. This inefficiency is particularly prominent in batch production, often resulting in insufficient equipment utilization and severely restricting capacity release. Therefore, traditional tooling has become a key bottleneck restricting the high-precision and high-efficiency processing of irregularly shaped parts such as composite bonded parts. Utility Model Content
[0005] The present invention aims to provide a tooling for composite bonded parts to solve the problems of traditional tooling in the prior art, such as incompatibility, difficulty in clamping, low positioning accuracy, large repeatability error, long adjustment time, low processing efficiency, and difficulty in meeting the requirements of high precision and high efficiency processing.
[0006] The embodiments of this utility model are implemented as follows:
[0007] This utility model provides a tooling for composite adhesive parts, which includes a tooling body;
[0008] One end of the aforementioned tooling body has a limiting end, and the other end of the aforementioned tooling body has a movable end. The movable end moves along the longitudinal direction of the aforementioned tooling body and is locked.
[0009] The aforementioned limiting end and the aforementioned movable end have several positioning convex arc surfaces, which are parallel to each other, spaced apart, and perpendicularly connected to the top surface of the aforementioned tooling body.
[0010] In use, first, place the part on the fixture body between the limiting end and the movable end. The inner curved surface of the part mates with the top surface of several positioning convex arc surfaces. Then, push the movable end and press the part to firmly clamp it between the limiting end and the movable end. Finally, use a five-axis machining center to mill the part in place to ensure the surface roughness and accuracy requirements of the part.
[0011] The tooling for composite bonded parts disclosed in this embodiment has a tooling body that carries the parts, and clamps the parts through the limiting end and the movable end, so that the parts can be accurately positioned and reliably clamped, which facilitates the improvement of the rigidity and stability of the parts during processing, and ensures the processing accuracy. Thus, the tooling for composite bonded parts has the beneficial effects of simple clamping, high positioning accuracy, small positioning error, short adjustment time, high processing efficiency, and meeting the requirements of high precision and high efficiency processing.
[0012] Optionally: a plurality of the aforementioned positioning convex arc surfaces have a support seat at one end near the aforementioned tooling body, and the plurality of the aforementioned positioning convex arc surfaces, the aforementioned support seat and the aforementioned tooling body are integrally formed.
[0013] With this configuration, the support effectively provides a tooling platform for the aforementioned positioning convex surfaces, facilitating the fit of the parts onto the top surfaces of the aforementioned positioning convex surfaces, thereby improving the machining rigidity and stability of the parts and ensuring machining accuracy.
[0014] Optionally, the support base has a first positioning surface and a second positioning surface on both sides, and the first positioning surface and the second positioning surface are parallel to each other.
[0015] With this configuration, the first and second positioning surfaces are used to support the parts and restrict their position, facilitating precise positioning and reliable clamping of irregularly shaped parts and preventing deformation or displacement of the parts during processing.
[0016] Optionally, the top arc surface of several of the above-mentioned positioning convex arc surfaces shall have a positioning curved surface.
[0017] With this configuration, the part can be stably fitted to the aforementioned positioning curved surface during processing. The inner arc surface of the part is supported by the aforementioned positioning curved surfaces of the aforementioned positioning convex arc surfaces, thereby making the part stable on the aforementioned positioning curved surfaces of the aforementioned positioning convex arc surfaces, which helps to improve the stability of the part and ensures that the part is not easily deformed or displaced during processing.
[0018] Optionally, a material drop hole is provided between adjacent positioning convex arc surfaces, and the material drop hole passes through the support base and the tooling body in sequence.
[0019] With this design, the aforementioned material discharge hole can ensure that chips do not accumulate inside the cavity of the tooling body during the machining process, thereby improving the machining accuracy and stability of the parts.
[0020] Optionally: the above-mentioned tooling body is a U-shaped structure, the above-mentioned tooling body has a horizontal frame, one end of the above-mentioned horizontal frame has a positioning end face, and the positioning end face is perpendicular to one end of the above-mentioned horizontal frame;
[0021] The other end of the aforementioned horizontal frame has a slidable movable pressure block, which is slidably locked onto the other end of the aforementioned horizontal frame.
[0022] With this configuration, the horizontal frame facilitates the placement of parts, the positioning end face can be used for axial positioning of parts to prevent axial displacement of parts, and the movable pressure block can press the end of the parts in the opposite direction, so that the parts are clamped between the positioning end face and the movable pressure block and fit against several positioning convex arc surfaces, thus completing the positioning of the parts and facilitating the processing of parts.
[0023] Optionally: the horizontal frame has a screw support surface at one end near the movable pressure block, and the movable pressure block has a first threaded through hole, a second threaded through hole and a third threaded through hole at the position corresponding to the screw support surface. A first connecting screw, a second connecting screw and a third connecting screw are respectively threaded into the first threaded through hole, the second threaded through hole and the third threaded through hole.
[0024] With this configuration, by tightening the first, second, and third connecting screws on the movable pressure block, the first, second, and third connecting screws abut against the screw support surface. When the screw support surface is subjected to force, it pushes the movable pressure block in the opposite direction, causing the movable pressure block to move along the direction of the positioning end face and press the part, which facilitates subsequent processing of the part and prevents the part from deforming or shifting during processing.
[0025] Optionally, the ends of the first connecting screw, the second connecting screw, and the third connecting screw that are away from the movable pressure block all have screw heads, and the ends of the screw heads have hexagonal recesses.
[0026] This design, with the hexagonal recessed hole on the screw head, makes it easy for workers to tighten the first connecting screw, the second connecting screw, and the third connecting screw using an external hex wrench, thus saving time and effort.
[0027] Optionally, a first groove is provided on the side of the positioning end face near the movable pressure block, and a second groove is provided on the side of the movable pressure block near the positioning end face. The first groove and the second groove are respectively provided along the axial direction of the positioning end face and the movable pressure block.
[0028] With this configuration, the opening of the first groove and the second groove is beneficial for the five-axis machining center to mill parts, providing sufficient space for the machining of parts and avoiding milling the positioning end face and the movable pressure block.
[0029] In summary, the tooling for composite bonded parts disclosed in this utility model has the advantages of simple clamping, high positioning accuracy, small positioning error, short adjustment time, high processing efficiency, and meeting the requirements of high-precision and high-efficiency processing. Attached Figure Description
[0030] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0031] Figure 1 This is a schematic diagram of the structure of a tooling for composite adhesive parts in an embodiment of this utility model;
[0032] Figure 2 This is a bottom view of a tooling for composite adhesive parts in an embodiment of this utility model;
[0033] Figure 3 This is a cross-sectional view of a tooling for composite adhesive parts in an embodiment of this utility model;
[0034] Figure 4 This is a schematic diagram of the assembly structure of the parts and tooling body in an embodiment of this utility model;
[0035] Figure 5 This is a schematic diagram of the structure of the parts in the embodiments of this utility model.
[0036] Icons: 1-Main fixture body, 2-Limiting end, 3-Moving end, 4-Positioning convex arc surface, 5-Support base, 6-First positioning surface, 7-Second positioning surface, 8-Positioning curved surface, 9-Drop hole, 10-Horizontal frame, 11-Positioning end face, 12-Moving pressure block, 13-Screw support surface, 14-First threaded through hole, 15-Second threaded through hole, 16-Third threaded through hole, 17-First connecting screw, 18-Second connecting screw, 19-Third connecting screw, 20-Screw head, 21-Hexagonal concave hole, 22-First groove, 23-Second groove, 24-Foam, 25-Film, 26-Wave absorption material. Detailed Implementation
[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0038] Therefore, the following detailed description of the embodiments of the present 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 present invention without inventive effort are within the scope of protection of the present invention.
[0039] Example
[0040] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This embodiment proposes a tooling for composite adhesive parts, including tooling body 1;
[0041] One end of the tooling body 1 has a limiting end 2, and the other end of the tooling body 1 has a movable end 3. The movable end 3 moves along the longitudinal direction of the tooling body 1 and is locked.
[0042] The limiting end 2 and the movable end 3 have several positioning convex arc surfaces 4, which are parallel to each other, spaced apart, and perpendicularly connected to the top surface of the tooling body 1.
[0043] In use, first, place the part on the fixture body 1 between the limiting end 2 and the movable end 3. The inner curved surface of the part is matched with the top surface of several positioning convex arc surfaces 4. Then, push the movable end 3 and press the part to make the part firmly clamped between the limiting end 2 and the movable end 3. Finally, use a five-axis machining center to mill the part in place to ensure the surface roughness and accuracy requirements of the part.
[0044] The tooling for composite bonded parts disclosed in this embodiment has a tooling body 1 that carries the parts, and clamps the parts through the limiting end 2 and the movable end 3, so that the parts can be accurately positioned and reliably clamped, which facilitates the improvement of the rigidity and stability of the parts during processing, and ensures the processing accuracy. Thus, the tooling for composite bonded parts has the beneficial effects of simple clamping, high positioning accuracy, small positioning error, short adjustment time, high processing efficiency, and meeting the requirements of high precision and high efficiency processing.
[0045] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 Several positioning convex arc surfaces 4 have a support seat 5 at one end near the tooling body 1. The several positioning convex arc surfaces 4, the support seat 5 and the tooling body 1 are integrally formed. The support seat 5 effectively provides a tooling platform for the several positioning convex arc surfaces 4, which makes it easy for the parts to fit on the top surface of the several positioning convex arc surfaces 4, improves the processing rigidity and stability of the parts, and ensures the processing accuracy.
[0046] The support base 5 has a first positioning surface 6 and a second positioning surface 7 on both sides. The first positioning surface 6 and the second positioning surface 7 are parallel to each other. The first positioning surface 6 and the second positioning surface 7 are used to support the parts and restrict the position of the parts, so as to facilitate the accurate positioning and reliable clamping of irregular parts and avoid deformation or displacement of the parts during the processing.
[0047] The top arc surface of several positioning convex arc surfaces 4 has a positioning curved surface 8. When the part is processed, the part can be stably attached to the positioning curved surface 8. The positioning curved surface 8 of several positioning convex arc surfaces 4 supports the inner arc surface of the part, thereby making the part stably placed on the positioning curved surface 8 of several positioning convex arc surfaces 4, which can improve the stability of the part and ensure that the part is not easily deformed or displaced during processing.
[0048] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 Each adjacent positioning convex arc surface 4 is provided with a blanking hole 9, which passes through the support base 5 and the tooling body 1 in sequence. During the processing, the blanking hole 9 can ensure that chips do not accumulate in the cavity of the tooling body 1, thereby improving the machining accuracy and stability of the parts.
[0049] The main body of the tooling 1 has a U-shaped structure. The main body of the tooling 1 has a horizontal frame 10. One end of the horizontal frame 10 has a positioning end face 11, which is perpendicular to one end of the horizontal frame 10. The other end of the horizontal frame 10 has a slidable movable pressure block 12, which is slidably locked on the other end of the horizontal frame 10. The horizontal frame 10 facilitates the placement of parts. The positioning end face 11 can be used for axial positioning of parts to prevent axial displacement of parts. The movable pressure block 12 can press the end of the parts in the opposite direction, so that the parts are clamped between the positioning end face 11 and the movable pressure block 12 and abut against several positioning convex arc surfaces 4, thus completing the positioning of the parts and facilitating the processing of the parts.
[0050] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The horizontal frame 10 has a screw support surface 13 at one end near the movable pressure block 12. The movable pressure block 12 has a first threaded through hole 14, a second threaded through hole 15, and a third threaded through hole 16 at the position corresponding to the screw support surface 13. A first connecting screw 17, a second connecting screw 18, and a third connecting screw 19 are respectively threaded into the holes of the first threaded through hole 14, the second threaded through hole 15, and the third threaded through hole 16. By tightening the first connecting screw 17, the second connecting screw 18, and the third connecting screw 19 on the movable pressure block 12, the first connecting screw 17, the second connecting screw 18, and the third connecting screw 19 abut against the screw support surface 13. When the screw support surface 13 is subjected to force, it pushes the movable pressure block 12 in the opposite direction. The movable pressure block 12 will move along the direction of the positioning end face 11 and press the part, which is convenient for subsequent processing of the part and avoids deformation or displacement of the part during processing.
[0051] The first connecting screw 17, the second connecting screw 18, and the third connecting screw 19 all have a screw head 20 at the end away from the movable pressure block 12. The end of the screw head 20 has a hexagonal recess 21. By setting the hexagonal recess 21 on the screw head 20, it is convenient for the operator to tighten the first connecting screw 17, the second connecting screw 18, and the third connecting screw 19 with an external hex wrench. This operation is time-saving and labor-saving.
[0052] A first groove 22 is provided on the side of the positioning end face 11 near the movable pressure block 12, and a second groove 23 is provided on the side of the movable pressure block 12 near the positioning end face 11. The first groove 22 and the second groove 23 are respectively provided along the axial direction of the positioning end face 11 and the movable pressure block 12. The opening of the first groove 22 and the second groove 23 is conducive to the milling of parts by the five-axis machining center, providing sufficient space for the machining of parts and avoiding milling the positioning end face 11 and the movable pressure block 12.
[0053] See Figure 1 , Figure 2, Figure 3 , Figure 4 and Figure 5 In this embodiment, the main structure of the part is formed by bonding foam 24, adhesive film 25, and microwave absorbing material 26 together to form the part substrate (e.g., Figure 5 As shown in the figure, a machining allowance of one millimeter is evenly reserved on the three sides of the part before machining. The process requires that all features of the part be milled in place by a five-axis machining center to ensure the surface roughness and accuracy requirements of the part.
[0054] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 In this embodiment, the machining fixture for the part consists of a fixture body 1, a first connecting screw 17, a second connecting screw 18, and a third connecting screw 19. The fixture body 1 is formed by CNC milling in one operation to ensure the accuracy of the fixture. A first positioning surface 6 and a second positioning surface 7 are milled on both sides of the support base 5 of the fixture body 1. The first threaded through hole 14, the second threaded through hole 15, and the third threaded through hole 16 on the left are used to connect the left movable pressure block 12 to press the side end of the part in the opposite direction. The middle positioning curved surface 8 is used to fit the concave curved surface of the part for positioning and machining. The right positioning end face 11 is used for axial positioning of the workpiece. The middle blanking hole 9 is used to prevent the ferromagnetic material powder chips from falling off during the part machining process and accumulating in the fixture.
[0055] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 In this embodiment, the tooling adopts a universal design, which can be quickly adjusted and processed according to the shape and size of different irregular parts, thereby improving the versatility and applicability of the tooling. The first positioning surface 6, the second positioning surface 7, and the positioning curved surface 8 are used to achieve precise positioning and reliable clamping of irregular parts, avoiding deformation or displacement during processing. The design of the positioning end face 11, the movable pressure block 12, the first connecting screw 17, the second connecting screw 18, and the third connecting screw 19 facilitates the quick clamping and disassembly of irregular parts, improving processing efficiency. For the weak parts of the composite bonded parts, the machining rigidity and stability of the parts can be improved by setting several positioning convex arc surfaces 4, ensuring the machining accuracy of the parts.
[0056] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The specific operating principle of the tooling used for composite bonded parts in this embodiment is as follows:
[0057] After the tooling body 1 is assembled with the first connecting screw 17, the second connecting screw 18, and the third connecting screw 19 on the movable pressure block 12, the parts can be tightened in reverse. First, the parts are placed on the support base 5 at the top of the horizontal frame 10, and the curved surface of the parts is properly matched with the positioning curved surfaces 8 of the several positioning convex arc surfaces 4. Then, the first connecting screw 17, the second connecting screw 18, and the third connecting screw 19 on the side of the movable pressure block 12 are tightened. After the screw support surface 13 is subjected to force, it pushes the movable pressure block 12 in the opposite direction. The left movable pressure block 12 presses the end of the parts, and the several positioning convex arc surfaces 4 are tightened. The positioning curved surface 8 of the arc surface 4 is used to fit the concave curved surface of the part, so that the part is firmly clamped between the positioning end face 11 and the movable pressure block 12, which facilitates the smooth completion of part processing and ensures the accuracy of part processing. The lateral clamping method ensures that the part is firmly clamped and will not interfere with the tooling during processing. The first connecting screw 17, the second connecting screw 18 and the third connecting screw 19 are used for quick clamping, so that the part is evenly stressed and the clamping is reliable. During processing, the material drop hole 9 ensures that no chips accumulate in the tooling cavity, improving the processing accuracy and stability of the part.
[0058] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A tooling for composite bonded parts, characterized in that: Includes the main tooling body (1); One end of the tooling body (1) has a limiting end (2), and the other end of the tooling body (1) has a movable end (3). The movable end (3) moves along the longitudinal direction of the tooling body (1) and locks. The limiting end (2) and the movable end (3) have several positioning convex arc surfaces (4), which are parallel to each other, spaced apart, and vertically connected to the top surface of the tooling body (1).
2. The tooling for composite bonded parts according to claim 1, characterized in that: Several of the positioning convex arc surfaces (4) have a support seat (5) at one end near the tooling body (1), and the several positioning convex arc surfaces (4), the support seat (5) and the tooling body (1) are integrally formed.
3. The tooling for composite bonded parts according to claim 2, characterized in that: The support base (5) has a first positioning surface (6) and a second positioning surface (7) on both sides, and the first positioning surface (6) and the second positioning surface (7) are parallel to each other.
4. The tooling for composite bonded parts according to claim 1, characterized in that: The top arc surface of several of the positioning convex arc surfaces (4) has a positioning curved surface (8).
5. The tooling for composite bonded parts according to claim 2, characterized in that: A material drop hole (9) is provided between adjacent positioning convex arc surfaces (4), and the material drop hole (9) passes through the support base (5) and the tooling body (1) in sequence.
6. The tooling for composite bonded parts according to claim 1, characterized in that: The tooling body (1) has a U-shaped structure. The tooling body (1) has a horizontal frame (10). One end of the horizontal frame (10) has a positioning end face (11). The positioning end face (11) is perpendicular to one end of the horizontal frame (10). The other end of the horizontal frame (10) has a slidable movable pressure block (12), which is slidably locked onto the other end of the horizontal frame (10).
7. The tooling for composite bonded parts according to claim 6, characterized in that: The horizontal frame (10) has a screw support surface (13) at one end near the movable pressure block (12). The movable pressure block (12) has a first threaded through hole (14), a second threaded through hole (15), and a third threaded through hole (16) at the position corresponding to the screw support surface (13). A first connecting screw (17), a second connecting screw (18), and a third connecting screw (19) are respectively threaded into the holes of the first threaded through hole (14), the second threaded through hole (15), and the third threaded through hole (16).
8. The tooling for composite bonded parts according to claim 7, characterized in that: The first connecting screw (17), the second connecting screw (18) and the third connecting screw (19) all have a screw head (20) at the end away from the movable pressure block (12), and the end of the screw head (20) has a hexagonal concave hole (21).
9. The tooling for composite bonded parts according to claim 6, characterized in that: The positioning end face (11) has a first groove (22) on the side near the movable pressure block (12), and the movable pressure block (12) has a second groove (23) on the side near the positioning end face (11). The first groove (22) and the second groove (23) are respectively opened along the axial direction of the positioning end face (11) and the movable pressure block (12).