A positioning tool and a manufacturing method thereof

Abstract

The application discloses a positioning tool and a manufacturing method thereof. The positioning tool is applied to a vehicle and comprises a plurality of connecting heads, at least one carbon fiber pipe, a first positioning part and a second positioning part. The first positioning part is used for being connected with the vehicle. The second positioning part is used for being connected with a component to be positioned. At least one carbon fiber pipe is connected with the plurality of connecting heads to form a main body frame. The first positioning part is connected with at least part of the connecting heads. The second positioning part is connected with at least part of the connecting heads, so that the component to be positioned is relatively positioned with the vehicle. Thus, the main body frame of the positioning tool is formed by the at least one carbon fiber pipe and the plurality of connecting heads, the weight of the main body frame and the overall weight of the positioning tool are effectively reduced, the use difficulty of the positioning tool is reduced, the production efficiency is improved, meanwhile, the plurality of connecting heads are formed by 3D printing, which is beneficial to better matching the shape of the connecting heads with the carbon fiber pipe, reducing the forming difficulty of the positioning tool and improving the production efficiency.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a positioning tool and its manufacturing method. Background Technology

[0002] In the production process of automotive welding and final assembly workshops, positioning fixtures are core equipment that ensures the assembly accuracy of parts and improves production efficiency. Their performance directly affects the overall vehicle assembly quality and the production line cycle time.

[0003] The existing positioning fixtures are quite heavy, making it difficult for operators to pick up, place, transport, assemble, and operate them during vehicle production, which can easily lead to problems such as low production efficiency. Summary of the Invention

[0004] The main objective of this application is to provide a positioning tooling and its manufacturing method, which aims to solve the aforementioned technical problems existing in the prior art.

[0005] To address the aforementioned technical problems, this application provides a positioning fixture applied to a vehicle. The positioning fixture includes multiple connectors, at least one carbon fiber tube, a first positioning part, and a second positioning part. The first positioning part is used to connect with the vehicle; the second positioning part is used to connect with the component to be positioned. At least one carbon fiber tube is connected to the multiple connectors to form a main frame. The first positioning part is connected to at least a portion of the connectors, and the second positioning part is connected to at least a portion of the connectors, so that the component to be positioned is relatively positioned relative to the vehicle.

[0006] In some embodiments, the connector is made of nylon.

[0007] In some embodiments, one end of each carbon fiber tube is connected to a connector and the other end is connected to another connector. The main frame includes an outer frame and an inner frame. Some carbon fiber tubes are located in the outer frame and the remaining carbon fiber tubes are located in the inner frame. The outer frame forms a polygonal structure. At least some connectors are located at the apex of the polygonal structure. The inner frame is located inside the polygonal structure. At least some connectors are located at the connection between the inner frame and the outer frame.

[0008] In some embodiments, each connector is provided with a mounting hole, through which the carbon fiber tube is inserted into the connector. The positioning fixture also includes adhesive, at least a portion of which is located within the mounting hole and fills the space between the carbon fiber tube and the inner wall of the mounting hole.

[0009] In some embodiments, the connector is further provided with an adhesive inlet hole and an vent hole. The adhesive inlet hole is connected to the mounting hole and the outside, respectively, and the vent hole is connected to the mounting hole and the outside, respectively, so that the adhesive can fill the mounting hole through the adhesive inlet hole.

[0010] In some embodiments, a portion of the inner wall of the mounting hole is recessed to form an adhesive groove, one end of which communicates with the adhesive inlet hole and the other end of which communicates with the vent hole, and at least a portion of the adhesive is filled in the adhesive groove.

[0011] In some embodiments, the positioning fixture further includes a plurality of adapter pieces, each adapter piece being connected to a connector, the first positioning part being connected to the connector through the adapter piece, and / or the second positioning part being connected to the connector through the adapter piece.

[0012] To address the aforementioned technical problems, this application also provides a method for manufacturing a positioning fixture. The method includes: providing at least one carbon fiber tube and multiple connectors to be processed, wherein the multiple connectors to be processed are formed by 3D printing; assembling and connecting the at least one carbon fiber tube with the multiple connectors to be processed to form a frame to be processed; milling away at least a portion of the dimensions to be processed from the multiple connectors to form multiple connectors, thereby forming a main frame; and assembling and connecting a first positioning part and a second positioning part with the main frame.

[0013] In some embodiments, the step of assembling at least one carbon fiber tube with a plurality of connectors to be processed to form a frame to be processed includes: connecting each carbon fiber tube to a corresponding connector to be processed to form a frame to be calibrated; connecting each connector to be processed of the frame to be calibrated to a corresponding positioning fixture to calibrate the frame to be calibrated, wherein the positioning fixture is used to fix each connector to be processed in the calibration position; and filling the mounting holes of the connectors to be processed in the calibrated frame to be calibrated with adhesive to obtain the frame to be processed.

[0014] In some embodiments, after the step of assembling and connecting the first positioning part and the second positioning part to the main frame, the manufacturing method further includes: calibrating the first positioning part, the second positioning part, and the main frame to obtain a positioning fixture.

[0015] Compared with existing technologies, the positioning fixture of this application is applied to vehicles. The positioning fixture includes multiple connectors, at least one carbon fiber tube, a first positioning part, and a second positioning part. The first positioning part is used to connect to the vehicle; the second positioning part is used to connect to the component to be positioned. At least one carbon fiber tube is connected to multiple connectors to form a main frame. The first positioning part is connected to at least some of the connectors, and the second positioning part is connected to at least some of the connectors, so that the component to be positioned is relatively positioned relative to the vehicle. Through the above implementation, the main frame of the positioning fixture is formed by at least one carbon fiber tube and multiple connectors, effectively reducing the weight of the main frame. Since the main frame accounts for a large proportion of the positioning fixture, the overall weight of the positioning fixture can be effectively reduced, thereby reducing the difficulty of using the positioning fixture and improving vehicle production efficiency. Simultaneously, the multiple connectors are all formed by 3D printing, giving the connectors higher degrees of freedom and precision, which is beneficial for the connectors to better match the shape of the carbon fiber tube, reducing the molding difficulty of the positioning fixture, thereby further reducing the overall weight of the positioning fixture and improving production efficiency. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with this application and, together with the specification, serve to explain the technical solutions of this application.

[0017] Figure 1 This is a schematic diagram illustrating the interaction between a positioning tooling according to one or more embodiments of this application and a vehicle and a component to be positioned; Figure 2 This is a first structural schematic diagram of a positioning tooling according to one or more embodiments of this application; Figure 3 This is a schematic diagram of the second structure of the positioning tooling according to one or more embodiments of this application; Figure 4 This is a schematic diagram of the third structure of a positioning tooling according to one or more embodiments of this application; Figure 5 This is a first structural schematic diagram of the connector of the positioning tooling according to one or more embodiments of this application; Figure 6 It is based on Figure 5 The connector shown is filled with adhesive and cut along the AA direction, as illustrated in the diagram. Figure 7 This is a second structural schematic diagram of the connector of the positioning tooling according to one or more embodiments of this application; Figure 8 This is a schematic flowchart of a method for manufacturing a positioning tooling according to one or more embodiments of this application; Figure 9This is a first structural schematic diagram of the frame to be calibrated and the positioning fixture according to one or more embodiments of this application; Figure 10 This is a second structural schematic diagram of the frame to be calibrated and the positioning fixture according to one or more embodiments of this application; Figure 11 This is a third structural schematic diagram of the frame to be calibrated and the positioning fixture according to one or more embodiments of this application.

[0018] Reference numerals: Vehicle 1; Part to be positioned 2; Positioning fixture 3; Main frame 10; Connector 11; Mounting hole 111; Glue inlet hole 112; Exhaust hole 113; Glue container 114; Carbon fiber tube 12; Outer frame 13; Inner frame 14; First positioning part 20; Second positioning part 30; Adhesive 40; Adapter piece 50; Positioning jig 4; Frame to be calibrated 60; Connector to be processed 61. Detailed Implementation

[0019] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0020] In the following description, specific details such as particular system architectures, interfaces, and technologies are presented for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of this application.

[0021] In this document, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship. Furthermore, "many" in this document means two or more. Moreover, the term "at least one" in this document means any combination of at least two of any one or more of a plurality of objects. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C.

[0022] In the production process of automotive welding and final assembly workshops, positioning fixtures are core equipment that ensures the assembly accuracy of parts and improves production efficiency. Their performance directly affects the overall vehicle assembly quality and the production line cycle time.

[0023] The existing positioning fixtures are quite heavy, making it difficult for operators to pick up, place, transport, assemble, and operate them during vehicle production, which can easily lead to problems such as low production efficiency.

[0024] Please combine Figures 1-7 , Figure 1 This is a schematic diagram illustrating the interaction between a positioning tooling according to one or more embodiments of this application and a vehicle and a component to be positioned; Figure 2This is a first structural schematic diagram of a positioning tooling according to one or more embodiments of this application; Figure 3 This is a schematic diagram of the second structure of the positioning tooling according to one or more embodiments of this application; Figure 4 This is a schematic diagram of the third structure of a positioning tooling according to one or more embodiments of this application; Figure 5 This is a first structural schematic diagram of the connector of the positioning tooling according to one or more embodiments of this application; Figure 6 It is based on Figure 5 The connector shown is filled with adhesive and cut along the AA direction, as illustrated in the diagram. Figure 7 This is a second structural schematic diagram of the connector of the positioning tooling according to one or more embodiments of this application.

[0025] To solve the above-mentioned technical problems, this application provides a positioning fixture 3, which is applied to a vehicle 1. The positioning fixture 3 includes a plurality of connectors 11, at least one carbon fiber tube 12, a first positioning part 20 and a second positioning part 30. The first positioning part 20 is used to connect with the vehicle 1; the second positioning part 30 is used to connect with the component 2 to be positioned. The at least one carbon fiber tube 12 is connected to the plurality of connectors 11 to form a main frame 10. The first positioning part 20 is connected to at least some of the connectors 11, and the second positioning part 30 is connected to at least some of the connectors 11, so that the component 2 to be positioned is positioned relative to the vehicle 1.

[0026] Understandably, during the production process of vehicle 1, different parts need to be gradually assembled onto vehicle 1. To improve assembly stability and precision, it is necessary to position these parts relative to vehicle 1. Positioning fixture 3 can be used to position the part to be positioned 2 relative to vehicle 1, thereby facilitating the precise and efficient assembly of the part to be positioned 2 onto vehicle 1. Specifically, vehicle 1 can refer to the main body of the vehicle, etc., and the part to be positioned 2 can refer to various parts that need to be assembled onto the main body of the vehicle through positioning fixture 3. Specifically, the part to be positioned 2 can be, but is not limited to, the front module, headlights, and tailgate latches, etc. Optionally, positioning fixture 3 can be, but is not limited to, the upper fixture of the front module of vehicle 1, the front module bracket fixture, etc.

[0027] The first positioning part 20 is used to connect with the vehicle 1, and the second positioning part 30 is used to connect with the part 2 to be positioned. It is understood that during the assembly of the part 2 to be positioned onto the vehicle 1, the first positioning part 20 can be fixedly connected to the vehicle 1, thereby keeping the positioning fixture 3 relatively fixed to the vehicle 1, reducing the risk of the positioning fixture 3 shaking, falling, or shifting during assembly. The second positioning part 30 can be fixedly connected to the part 2 to be positioned, thereby keeping the part 2 to be positioned relatively fixed to the positioning fixture 3, and thus positioning the part 2 to be positioned relative to the vehicle 1. It should be noted that the specific structure of the first positioning part 20 can be adjusted according to the actual needs of the corresponding position on the vehicle 1. For example, the vehicle 1 may have a positioning hole at the corresponding position, and the first positioning part 20 may include a positioning pin, etc., so that the first positioning part 20 and the vehicle 1 can be connected through the cooperation of the positioning pin and the positioning hole. The specific structure of the second positioning part 30 can be configured according to the corresponding part 2 to be positioned. For example, the second positioning part 30 may include, but is not limited to, a magnetic suction part and a clamping head, so as to connect the part 2 to be positioned by means including but not limited to magnetic suction or clamping. The second positioning part 30 may also include a positioning pin to improve positioning accuracy. The magnetic suction part may include, but is not limited to, neodymium iron boron strong magnets. It should be noted that the specific structures of the first positioning part 20 and the second positioning part 30 can be adjusted according to actual needs and are not limited here.

[0028] For example, the first positioning part 20 may include a positioning pin, a positioning support block, etc. The positioning pin can be positioned by cooperating with a corresponding reference hole on the vehicle 1, and the positioning support block can be positioned by cooperating with a corresponding reference surface on the vehicle 1. The positioning pin and the positioning support block can also be configured to be adjustable in the adjustment direction so that the first positioning part 20 can adapt to the adjustment amount in different positioning scenarios. For example, in the adjustment direction, an adjustment shim can be provided between the positioning support block and the connector 11. The position of the positioning support block can be adjusted by replacing the adjustment shims of different thicknesses, etc. It is understood that the positioning pin can also be adjusted in position by cooperating with the adjustment shim, etc. The specific structure of the second positioning part 30 can also be the same as or similar to that of the first positioning part 20, and will not be described in detail here.

[0029] To improve the rigidity and wear resistance of the first positioning part 20 and the second positioning part 30, the main body materials of the first positioning part 20 and the second positioning part 30 may include, but are not limited to, aluminum and steel components. However, to reduce the risk of the first positioning part 20 damaging the vehicle 1 and the second positioning part 30 damaging the part to be positioned 2, the parts of the first positioning part 20 that contact the vehicle 1 and the parts of the second positioning part 30 that contact the part to be positioned 2 may be made of materials with a certain degree of flexibility, including but not limited to nylon.

[0030] Understandably, the carbon fiber tube 12 is woven from high-strength carbon fiber filaments, possessing good structural strength and a lighter weight compared to metal materials. The specific specifications of the carbon fiber tube 12 can be selected according to the actual load-bearing requirements of the positioning fixture 3. Optionally, the diameter of the carbon fiber tube 12 can be greater than or equal to 20mm and less than or equal to 30mm, specifically, the diameter can be, but is not limited to, 20mm, 25mm, or 30mm. Optionally, the wall thickness of the carbon fiber tube 12 can be greater than or equal to 2mm and less than or equal to 3mm, specifically, the wall thickness can be, but is not limited to, 2mm, 2.2mm, 2.5mm, 2.8mm, 3mm, etc. Optionally, the density of the carbon fiber tube 12 can be less than or equal to 1.8g / cm³, the tensile strength can be greater than or equal to 3500MPa, and the elastic modulus can be greater than or equal to 230GPa, etc.

[0031] The connector 11 can be connected to the carbon fiber tube 12 to form the main frame 10. It should be noted that the main frame 10 is the main structure of the positioning fixture 3. The main frame 10 provides an installation reference for the first positioning part 20 and the second positioning part 30, thereby providing them with fixation and load-bearing capacity. Optionally, the main frame 10 can be configured to account for more than 60% of the overall volume of the positioning fixture 3. Since the main frame 10 is mainly formed by the relatively lightweight carbon fiber tube 12 and the connector 11, the overall weight of the positioning fixture 3 can be effectively reduced. The connector 11 provides fixation and support for the first positioning part 20 and the second positioning part 30. There are multiple connectors 11. It should be noted that the first positioning part 20 can be connected to at least some of the connectors 11, and the second positioning part 30 can be connected to at least some of the connectors 11. For example, among all the connectors 11, some of the connectors 11 can be connected to the first positioning part 20, and the remaining connectors 11 can be connected to the second positioning part 30. Alternatively, some connectors 11 can be connected to the first positioning part 20, some connectors 11 can be connected to the second positioning part 30, and some connectors 11 can be neither connected to the first positioning part 20 nor to the second positioning part 30.

[0032] Furthermore, the connector 11 connects to the carbon fiber tube 12 to form the main frame 10. There is at least one carbon fiber tube 12. When there are multiple carbon fiber tubes 12, they can be connected to each other through the connector 11 to form the main frame 10. For example, the carbon fiber tube 12 can be a straight tubular shape. Taking three carbon fiber tubes 12 as an example, there can also be three connectors 11. The three carbon fiber tubes 12 can be arranged in a triangle with their ends connected. Each carbon fiber tube 12 can serve as one side of the triangle. One end of each carbon fiber tube 12 is connected to one connector 11, and the other end is connected to another connector 11, thus forming a complete closed main frame 10. It is understood that the shape of the main frame 10 can be any shape, including but not limited to triangles, squares, trapezoids, etc., and can be specifically set according to actual needs.

[0033] It should be noted that the connector 11 is formed by 3D printing. The shape and material of the 3D-printed connector 11 offer a high degree of freedom, facilitating better compatibility with the carbon fiber tube 12. Compared to forming the connector 11 through metal casting or other processes, this reduces the molding difficulty of the main frame 10. Understandably, the 3D-printed connector 11 can be made of metal or not. When not made of metal, its weight is effectively reduced. Even when made of metal, the volume of the connector 11 can be significantly reduced through 3D printing, thus reducing the volume of the metal structure and further reducing the weight of the positioning fixture 3. Furthermore, forming the connector 11 through metal casting or other processes carries a higher risk of shape mismatch during assembly with the carbon fiber tube 12, leading to distortion and scrapping of the main frame 10, potentially resulting in decreased production efficiency and increased costs.

[0034] Through the above implementation method, the main frame 10 of the positioning fixture 3 is formed by at least one carbon fiber tube 12 and multiple connectors 11, which effectively reduces the weight of the main frame 10. Since the main frame 10 accounts for a large proportion of the positioning fixture 3, the overall weight of the positioning fixture 3 can be effectively reduced, thereby reducing the difficulty of using the positioning fixture 3 and improving the production efficiency of the vehicle 1. At the same time, the multiple connectors 11 are all formed by 3D printing, which makes the connectors 11 have higher degrees of freedom and precision, which is conducive to the better matching of the shape of the connectors 11 with the carbon fiber tube 12, reducing the molding difficulty of the positioning fixture 3, thereby further reducing the overall weight of the positioning fixture 3 and improving production efficiency.

[0035] In some embodiments, the connector 11 is made of nylon. The nylon material can be, but is not limited to, HP3DHR-PA12 7500 high-performance nylon. Connectors 11 3D printed from this material have higher precision, better rigidity, and stronger wear resistance. They can be used to produce high-precision small holes, thin-walled, and complex structural parts. The initial precision of the 3D-printed connector 11 can reach ±0.2mm, and the surface has a uniform granular texture. This further improves the compatibility between the connector 11 and the carbon fiber tube 12, reduces the molding difficulty of the main frame 10, and significantly reduces the weight of the connector 11 compared to metal materials. This further reduces the weight of the positioning fixture 3, lowers the molding and usage difficulty of the positioning fixture 3, and improves the production efficiency of the vehicle 1.

[0036] It should be noted that the connector 11 is formed by 3D printing. This does not mean that the connector 11 must be formed in one step by 3D printing. Rather, it means that the main structure of the connector 11 is formed by 3D printing. For example, the prototype of the connector 11 can be formed by 3D printing. That is, the connector 61 to be processed can be initially formed by 3D printing, and then the connector 61 to be processed can be further processed by other processes to finally form the connector 11. Specifically, the connector 61 to be processed can be formed using 3D printing. Compared to the final finished connector 11, the connector 61 can have additional dimensional allowances, such as additional thickness or length to be processed in certain areas. These dimensional allowances can be retained or eliminated based on the actual assembly requirements. For example, the connector 61 can be first connected and assembled with the carbon fiber tube 12, and the excess dimensions can be removed by CNC milling or other methods based on the actual assembly requirements. This improves assembly accuracy, enhances the adaptability of the positioning fixture 3, and reduces the risk of assembly failure or even scrap due to difficulty in flexible adjustment during subsequent assembly processes caused by one-step molding. Optionally, the dimensional allowance can be set to be greater than or equal to 5mm, etc.

[0037] In some embodiments, the positioning fixture 3 further includes multiple adapter pieces 50, each adapter piece 50 being connected to a connector 11. The first positioning part 20 is connected to the connector 11 via the adapter piece 50, and / or the second positioning part 30 is connected to the connector 11 via the adapter piece 50. It is understood that since the connector 11 is made of nylon, and the first positioning part 20 and the second positioning part 30 need to be frequently replaced during the use of the positioning fixture 3, frequent friction and other contact will occur between the first positioning part 20 and the second positioning part 30 and the connector 11, which can easily lead to damage to the connector 11. By providing adapter pieces 50 on the connector 11, the adapter pieces 50 can be made of wear-resistant materials including but not limited to metal, so that the first positioning part 20 and the second positioning part 30 only need to have relative disassembly and friction contact with the adapter pieces 50. Even if the adapter pieces 50 are damaged, only the adapter pieces 50 need to be replaced, extending the service life of the connector 11 and improving the reliability of the main frame 10.

[0038] In some embodiments, one end of each carbon fiber tube 12 is connected to a connector 11 and the other end is connected to another connector 11. The main frame 10 includes an outer frame 13 and an inner frame 14. Some carbon fiber tubes 12 are located in the outer frame 13 and the remaining carbon fiber tubes 12 are located in the inner frame 14. The outer frame 13 forms a polygonal structure, and at least some connectors 11 are respectively located at the apex of the polygonal structure. The inner frame 14 is located inside the polygonal structure, and at least some connectors 11 are respectively located at the connection between the inner frame 14 and the outer frame 13. It is understood that each carbon fiber tube 12 can be in the form of a straight tube, with one end connected to a connector 11 and the other end connected to another connector 11. It is understood that in this way, multiple carbon fiber tubes 12 and multiple connectors 11 can form a complete closed polygonal structure. Each connector 11 can be connected to at least two carbon fiber tubes 12, thereby connecting different carbon fiber tubes 12. It should be noted that at least some connectors 11 are respectively located at the apex of the polygonal structure formed by the outer frame 13, thereby facilitating the improvement of the stability of the outer frame 13. Specifically, a connector 11 can be provided at each apex. Furthermore, the inner frame 14 is located inside the polygonal structure formed by the outer frame 13. It is understood that the inner frame 14 provides further fixation and support for the outer frame 13, thereby improving the stability of the main frame 10. For example, when the outer frame 13 is a quadrilateral structure, the inner frame 14 can span two opposite sides of the quadrilateral structure to provide support for those two sides, thereby reducing the risk of deformation of the outer frame 13 and improving the accuracy and stability of the main frame 10. At least some of the connectors 11 are also located at the connection points between the inner frame 14 and the outer frame 13. It is understood that the connectors 11 located at the connection points between the inner frame 14 and the outer frame 13 can be connected to three or more carbon fiber tubes 12 simultaneously.

[0039] It should be noted that the connector 11 can not only be set at the top corner of the outer frame 13 and the connection between the inner frame 14 and the outer frame 13, but can be set at any connection between two adjacent carbon fiber tubes 12.

[0040] In some embodiments, each connector 11 is provided with a mounting hole 111, through which the carbon fiber tube 12 is inserted into the connector 11. The positioning fixture 3 also includes adhesive 40, at least a portion of which is located within the mounting hole 111 and fills the space between the carbon fiber tube 12 and the inner wall of the mounting hole 111. It is understood that the carbon fiber tube 12 can be inserted into the connector 11 through the mounting hole 111, allowing the adhesive 40 to fill the space between the carbon fiber tube 12 and the inner wall of the mounting hole 111. Since the carbon fiber tube 12 and the connector 11 are lightweight, the adhesive can effectively fix them together, improving the connection stability between the carbon fiber tube 12 and the connector 11. Furthermore, the structure is simple, lightweight, and has low molding difficulty. It should be noted that the number of mounting holes 111 on each connector 11 corresponds to the number of carbon fiber tubes 12 connected to it. For example, when a connector 11 needs to be connected to two carbon fiber tubes 12, the connector 11 can be provided with two mounting holes 111. When a connector 11 needs to be connected to three carbon fiber tubes 12, the connector 11 can be provided with three mounting holes 111. The specific setting depends on the actual needs.

[0041] In some embodiments, the connector 11 is further provided with an adhesive inlet 112 and an vent 113. The adhesive inlet 112 is connected to the mounting hole 111 and the outside, respectively, and the vent 113 is connected to the mounting hole 111 and the outside, respectively, so that the adhesive 40 can be filled into the mounting hole 111 through the adhesive inlet 112. It can be understood that during the assembly of the main support, the carbon fiber tube 12 can be inserted into the corresponding mounting hole 111 first, and adhesive can be filled into the mounting hole 111 through the adhesive inlet 112, so that the adhesive fills between the carbon fiber tube 12 and the inner wall of the mounting hole 111. Since both the vent 113 and the adhesive inlet 112 are connected to the mounting hole 111, when the adhesive 40 enters the mounting hole 111 through the adhesive inlet 112, the gas will be discharged through the vent 113, thereby reducing the difficulty of filling the adhesive 40. When part of the adhesive 40 overflows through the vent 113, it indicates that the adhesive 40 has been basically filled, thus improving the filling efficiency of the adhesive 40.

[0042] In some embodiments, a portion of the inner wall of the mounting hole 111 is recessed to form an adhesive reservoir 114. One end of the adhesive reservoir 114 communicates with the adhesive inlet hole 112, and the other end of the adhesive reservoir 114 communicates with the vent hole 113. At least a portion of the adhesive 40 is filled in the adhesive reservoir 114. It is understood that a portion of the inner wall of the mounting hole 111 can be recessed radially to form the adhesive reservoir 114. The adhesive reservoir 114 provides sufficient space for the adhesive 40, thereby increasing the contact area between the adhesive and the carbon fiber tube 12 and the inner wall of the mounting hole 111, and improving the connection stability between the carbon fiber tube 12 and the inner wall of the mounting hole 111. One end of the adhesive reservoir 114 communicates with the adhesive inlet hole 112, and the other end communicates with the vent hole 113. When the adhesive 40 fills the adhesive reservoir 114, it can overflow through the vent hole 113, making it easier for operators to understand the filling status and improving production efficiency. The shape of the adhesive reservoir 114 can be set arbitrarily. For example, the adhesive reservoir 114 can be arranged in a ring around the circumferential direction of the mounting hole 111, or it can be arranged in a straight line around the axial direction of the mounting hole 111, or it can be arranged in a spiral shape around both the circumferential and axial directions.

[0043] Combination Figures 8-11 , Figure 8 This is a schematic flowchart of a method for manufacturing a positioning tooling according to one or more embodiments of this application; Figure 9 This is a first structural schematic diagram of the frame to be calibrated and the positioning fixture according to one or more embodiments of this application; Figure 10 This is a second structural schematic diagram of the frame to be calibrated and the positioning fixture according to one or more embodiments of this application; Figure 11 This is a third structural schematic diagram of the frame to be calibrated and the positioning fixture according to one or more embodiments of this application.

[0044] To solve the above-mentioned technical problems, this application also provides a method for manufacturing a positioning fixture. The method for manufacturing the positioning fixture 3 includes the following steps: Step S110: Provide at least one carbon fiber tube and a plurality of connectors to be processed, wherein the plurality of connectors to be processed are formed by 3D printing.

[0045] It is understandable that the connector 61 to be processed is a preliminary form of the connector 11 obtained through the 3D printing process. As mentioned earlier, the connector 61 to be processed may have additional dimensional allowances compared to the final finished connector 11. For example, some parts may have additional thickness to be processed, and the length to be processed may be pending. These dimensional allowances can be retained or eliminated according to the actual assembly situation, which will not be elaborated here. In some application scenarios, before forming the connector 61 to be processed through the 3D printing process, the various parameters of the connector 61 to be processed can be verified through FEA finite element analysis to ensure that the connector 61 to be processed has sufficient dimensions to be processed.

[0046] Step S120: Assemble at least one carbon fiber tube with multiple connectors to be processed to form a frame to be processed.

[0047] It is understandable that the preliminary assembly of the connector 61 to be processed and the carbon fiber tube 12 can form a frame to be processed. The actual assembly of the frame to be processed can reveal whether there are any situations where the connector 61 to be processed and the carbon fiber tube 12 cannot be assembled or the assembly accuracy is insufficient. This allows us to determine whether the dimensions to be processed on the connector 61 need to be further processed, and if so, how much processing is required.

[0048] Step S130: At least part of the dimensions to be processed are removed from the multiple connectors to be processed by milling to form multiple connectors, thereby forming the main frame of the frame to be processed.

[0049] It is understandable that the specific assembly status of the frame to be processed can be known according to step S120. Therefore, at least part of the dimensions to be processed on multiple connecting heads 61 can be removed by milling according to the actual assembly status, so that the milled connecting heads 61 form connecting heads 11, thereby forming the main frame 10 of the frame to be processed, and further improving the accuracy of the main frame 10.

[0050] Step S140: Assemble and connect the first positioning part and the second positioning part to the main frame.

[0051] Based on the already formed main frame 10, the first positioning part 20 and the second positioning part 30 are assembled and connected to the main frame 10 to obtain the positioning fixture 3.

[0052] Through the above implementation method, the connection head 61 to be processed can be adjusted by combining the preliminary assembly of the frame to be processed with the milling process, thereby improving the assembly accuracy of the main frame 10, and at the same time, it is beneficial to improve the assembly flexibility of the main frame 10 and improve production efficiency.

[0053] In some embodiments, step S120 includes: connecting each carbon fiber tube 12 to a corresponding connector 61 to be processed to form a frame 60 to be calibrated; connecting each connector 61 to be processed of the frame 60 to be calibrated to a corresponding positioning fixture 4 to calibrate the frame 60 to be calibrated, wherein the positioning fixture 4 is used to fix each connector 61 to be processed in the calibration position; and filling the mounting holes 111 of the connectors 61 to be processed in the calibrated frame 60 to obtain the frame to be processed. It is understandable that since multiple carbon fiber tubes 12 are connected to each other through connectors 11, assembly errors such as twisting and misalignment may occur at the connection points during assembly. Before filling the mounting holes 111 with adhesive 40, the relative positions of each carbon fiber tube 12 and each connector 11 can still be adjusted. Therefore, after fixing each connector 61 to be processed in the calibration position by the positioning fixture 4, the final shape of the frame 60 to be calibrated can be further calibrated and basically determined. Filling the mounting holes 111 with adhesive 40 after calibration helps to improve the accuracy of the frame to be processed, thereby improving the accuracy of the final main frame 10. At the same time, it can improve the flexibility of the positioning fixture 3 in the manufacturing process, reduce the risk of assembly failure and the inability to adjust after fixing, which would lead to the scrapping of the frame to be processed, and improve the reliability of the positioning fixture 3.

[0054] In some embodiments, after step S140, the manufacturing method further includes: calibrating the first positioning part 20, the second positioning part 30, and the main frame 10 to obtain the positioning fixture 3. It is understood that after assembling the first positioning part 20, the second positioning part 30, and the main frame 10, the formed positioning fixture 3 can be further calibrated to further reduce the error of the positioning fixture 3 and improve its reliability.

[0055] In summary, this application provides a positioning fixture 3, which is applied to a vehicle 1. The positioning fixture 3 includes a plurality of connectors 11, at least one carbon fiber tube 12, a first positioning part 20, and a second positioning part 30. The first positioning part 20 is used to connect with the vehicle 1; the second positioning part 30 is used to connect with the component 2 to be positioned. At least one carbon fiber tube 12 is connected to the plurality of connectors 11 to form a main frame 10. The first positioning part 20 is connected to at least some of the connectors 11, and the second positioning part 30 is connected to at least some of the connectors 11, so that the component 2 to be positioned is positioned relative to the vehicle 1. Through the above implementation method, the main frame 10 of the positioning fixture 3 is formed by at least one carbon fiber tube 12 and multiple connectors 11, which effectively reduces the weight of the main frame 10. Since the main frame 10 accounts for a large proportion of the positioning fixture 3, the overall weight of the positioning fixture 3 can be effectively reduced, thereby reducing the difficulty of using the positioning fixture 3 and improving the production efficiency of the vehicle 1. At the same time, the multiple connectors 11 are all formed by 3D printing, which makes the connectors 11 have higher degrees of freedom and precision, which is conducive to the better matching of the shape of the connectors 11 with the carbon fiber tube 12, reducing the molding difficulty of the positioning fixture 3, thereby further reducing the overall weight of the positioning fixture 3 and improving production efficiency.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A positioning fixture, characterized in that, Applied to vehicles, the positioning fixture includes: Multiple connectors; At least one carbon fiber tube; A first positioning part is used to connect to the vehicle; The second positioning part is used to connect with the component to be positioned; wherein at least one of the carbon fiber tubes is connected to a plurality of the connectors to form a main frame, the first positioning part is connected to at least a portion of the connectors, and the second positioning part is connected to at least a portion of the connectors, so that the component to be positioned is positioned relative to the vehicle.

2. The positioning fixture according to claim 1, characterized in that, The connector is made of nylon.

3. The positioning fixture according to claim 1 or 2, characterized in that, Each carbon fiber tube has one end connected to one connector and the other end connected to another connector. The main frame includes an outer frame and an inner frame. Some of the carbon fiber tubes are located in the outer frame, and the remaining carbon fiber tubes are located in the inner frame. The outer frame forms a polygonal structure, and at least some of the connectors are located at the apex of the polygonal structure. The inner frame is located inside the polygonal structure, and at least some of the connectors are located at the connection between the inner frame and the outer frame.

4. The positioning fixture according to claim 1 or 2, characterized in that, Each of the connectors is provided with a mounting hole, through which the carbon fiber tube is inserted into the connector. The positioning fixture also includes adhesive, at least a portion of which is located within the mounting hole and fills the space between the carbon fiber tube and the inner wall of the mounting hole.

5. The positioning fixture according to claim 4, characterized in that, The connector is also provided with an adhesive inlet and an vent. The adhesive inlet is connected to the mounting hole and the outside, respectively, and the vent is connected to the mounting hole and the outside, respectively, so that the adhesive can fill the mounting hole through the adhesive inlet.

6. The positioning fixture according to claim 5, characterized in that, The inner wall of the mounting hole is partially recessed to form an adhesive groove. One end of the adhesive groove is connected to the adhesive inlet hole, and the other end of the adhesive groove is connected to the vent hole. At least a portion of the adhesive is filled in the adhesive groove.

7. The positioning fixture according to claim 2, characterized in that, The positioning fixture also includes multiple adapter pieces, each adapter piece being connected to a corresponding connector. The first positioning part is connected to the connector through the adapter piece, and / or the second positioning part is connected to the connector through the adapter piece.

8. A method for manufacturing a positioning tooling, characterized in that, The manufacturing method of the positioning fixture is used to manufacture the positioning fixture as described in any one of claims 1-7, the manufacturing method comprising: At least one carbon fiber tube and a plurality of connectors to be processed are provided, wherein the plurality of connectors to be processed are formed by 3D printing; The at least one carbon fiber tube is assembled and connected with a plurality of the connectors to be processed to form a frame to be processed; At least a portion of the dimensions to be processed are removed from the multiple connectors to be processed by milling to form multiple connectors, thereby making the frame to be processed form the main frame; The first positioning part and the second positioning part are assembled and connected to the main frame.

9. The manufacturing method of the positioning fixture according to claim 8, characterized in that, The step of assembling and connecting the at least one carbon fiber tube with the plurality of the connectors to be processed to form the frame to be processed includes: Each of the carbon fiber tubes is connected to the corresponding connector to be processed to form a frame to be calibrated; Each of the connectors to be processed in the frame to be calibrated is connected to a positioning fixture to calibrate the frame, wherein the positioning fixture is used to fix each connector to be processed in the calibration position. The mounting holes of the connector to be processed in the calibrated frame are filled with adhesive to obtain the frame to be processed.

10. The manufacturing method of the positioning fixture according to claim 8, characterized in that, After the step of assembling and connecting the first positioning part and the second positioning part to the main frame, the manufacturing method further includes: The first positioning part, the second positioning part, and the main frame are calibrated to obtain the positioning fixture.

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