A method and system for assembling front-end templates

Abstract

This application discloses a method and system for assembling a front-end module. The method includes: pre-installing a first connecting bolt on the upper side of the connection between the front-end module and the front bumper beam; tightening the middle part of the main body of the front-end module to the front panel of the vehicle body in the X direction; inserting the first positioning pins at both ends of the auxiliary device into the first positioning holes on the corresponding fenders, while simultaneously rotating the front-end module around the first connecting bolt as an axis, so that the second positioning pin of the auxiliary device is inserted into the second positioning hole on the top surface of the main body of the front-end module; pushing the two connecting arms of the front-end module, so that the third positioning pins at both ends of the auxiliary device are inserted into the third positioning holes on the corresponding connecting arms; tightening the connecting arms to the corresponding side beams using the second connecting bolts; disassembling the auxiliary device, and then tightening the first connecting bolt on the upper side and the third connecting bolt on the lower side of the connection between the main body of the front-end module and the front bumper beam. This application improves the relative accuracy of the fender and the front-end module in the X direction.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and more specifically, to a method and system for assembling a front-end template. Background Technology

[0002] In automotive design, the lights, front bumper, and other components of the front fascia are positioned and fixed on the fenders and front-end modules. The front-end module is mounted on the body crossbeams, while the fenders are mounted on the side panels. There is no direct assembly relationship between the two, resulting in relatively poor precision. This leads to mismatches in the gaps and surface areas between the front bumper, lights, and surrounding components, affecting the overall vehicle appearance. Therefore, for models with front-end modules, improving the X-axis precision of the front-end module and the precision between it and the fenders becomes a key factor in improving the pass rate of the front fascia's Dimension Technical Specification (DTS).

[0003] like Figure 1 As shown, in the existing technical solution, the first connection point 2 and the second connection point 1 of the front-end module are fully fitted to the front-end panel and the side crossbeam of the vehicle body in the X direction and then tightened to achieve a strong fit. Specifically, as shown... Figure 2 As shown, the front-end module is positioned in the XYZ directions with the front-end plate of the vehicle body through positioning holes 3, and then tightened in the X direction with the bolts at the first connection point 1. Figure 3 As shown, the second connection point 1 is located on the connecting arm of the front-end module, and the front-end module is tightened to the side crossbeam in the X direction by bolts. The dimensional chain of the fender and front-end module for a certain vehicle model is shown in Table 1 below. As can be seen from Table 1, the dimensional chain is relatively long, and the assembly accuracy of the front-end module is affected by various factors such as the fender, front door, lower body, side panel, and anti-collision beam, resulting in poor assembly accuracy of the front-end module. Furthermore, as... Figure 1 As shown, the main body height of the front-end module is H1, and the X-axis of the main body is located at the bottom with an effective positioning height of H2, which is located near the first connection point. There is a lever between the upper X-axis and the lower X-axis of the front-end module. When there is a deviation in the lower X-axis, the deviation in the upper X-axis will be magnified, which increases the assembly difficulty of the front-end module.

[0004] Table 1 Fender and Front Module Dimension Chain

[0005] Summary of the Invention

[0006] This application provides a method and system for assembling a front-end template. By using an auxiliary device to establish a connection between the front-end module and the fender, the dimensional chain is shortened, thereby improving the relative accuracy of the fender and the front-end module in the X direction. This improves the pass rate of the gap surface difference between the headlights, front bumper and other components and the surrounding components, thus enhancing the visual quality of the vehicle's front face.

[0007] This application provides a method for assembling a front-end template, including:

[0008] The first connecting bolt on the upper side of the connection between the main body of the pre-installed front-end module and the front anti-collision beam has an axis parallel to the Y-direction of the vehicle.

[0009] The middle part of the main body of the front module is attached to the front panel of the vehicle body and tightened in the X direction;

[0010] Insert the first positioning pins at both ends of the auxiliary device into the first positioning holes on the corresponding fenders, and at the same time rotate the front module around the first connecting bolt as the axis so that the second positioning pin of the auxiliary device is inserted into the second positioning hole on the top surface of the main body of the front module. The axes of the first positioning hole and the second positioning hole are both parallel to the Z direction of the vehicle.

[0011] Push the two connecting arms of the front module so that the third positioning pins at both ends of the auxiliary device are inserted into the third positioning holes of the corresponding connecting arms. The axis of the third positioning hole is parallel to the Z direction of the vehicle.

[0012] The connecting arm is tightened to the corresponding side crossbeam using the second connecting bolt, and the axis of the second connecting bolt is parallel to the Z-direction of the vehicle;

[0013] Disassemble the auxiliary device, and then tighten the first connecting bolt on the upper side and the third connecting bolt on the lower side at the connection between the main body of the front module and the front bumper beam.

[0014] Preferably, the auxiliary device includes a first support rod extending along the Y direction of the vehicle, with a first locating pin fixed at each end of the first support rod.

[0015] Preferably, the auxiliary device includes a second support rod extending along the Y direction of the vehicle, and a third locating pin is fixed to each end of the second support rod;

[0016] Compared to the first support rod, the second support rod is closer to the main body of the front module.

[0017] Preferably, the auxiliary device includes two third support rods extending along the X direction of the vehicle. The third support rods are fixedly connected to the first support rod and the second support rod respectively, and a second positioning pin is fixed to the front end of each third support rod.

[0018] This application also provides an assembly system for a front-end template, including a side crossbeam, a front-end panel of the vehicle body, a fender, and auxiliary devices;

[0019] The auxiliary device has a first positioning pin and a third positioning pin on each side, and a second positioning pin at the front end. The third positioning pin is closer to the main body of the front end module than the first positioning pin. The second positioning pin is closer to the main body of the front end module than the third positioning pin.

[0020] In use, the first positioning pin is inserted into the first positioning hole on the corresponding fender, the second positioning pin is inserted into the second positioning hole on the top surface of the front module, and the third positioning pin is inserted into the third positioning hole on the corresponding connecting arm; wherein, the axes of the first positioning hole, the second positioning hole and the third positioning hole are all parallel to the Z direction of the vehicle.

[0021] The two sides of the middle part of the main body of the front module are fastened to the front panel of the vehicle body in the X direction, and the two connecting arms of the front module are fastened to the side crossbeams in the Z direction.

[0022] Preferably, the auxiliary device includes a first support rod extending along the Y direction of the vehicle, with a first locating pin fixed at each end of the first support rod.

[0023] Preferably, the auxiliary device includes a second support rod extending along the Y direction of the vehicle, with a third locating pin fixed at each end of the second support rod.

[0024] Preferably, the auxiliary device includes two third support rods extending along the X direction of the vehicle. The third support rods are fixedly connected to the first support rod and the second support rod respectively, and a second positioning pin is fixed to the front end of each third support rod.

[0025] Preferably, the connecting arm of the front-end module is provided with a connecting hole for connecting to the side crossbeam, and both the connecting hole and the third positioning hole are located on the top surface of the middle part of the connecting arm.

[0026] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.

[0028] Figure 1 This is a structural diagram of the front-end module in the existing technology;

[0029] Figure 2 This is a schematic diagram illustrating the connection between the front-end module and the front-end board of the vehicle body in the prior art;

[0030] Figure 3 This is a schematic diagram of the connection point between the front-end module and the side crossbeam in the prior art;

[0031] Figure 4 A structural diagram of the assembly system for the front-end template provided in this application;

[0032] Figure 5 The structure diagram of the front-end template provided in this application;

[0033] Figure 6 Structural diagram of the auxiliary device provided in this application;

[0034] Figure 7 A structural diagram of the first connection point of the front-end template provided in this application;

[0035] Figure 8 A structural diagram of the top surface of the main body of the front-end template provided in this application;

[0036] Figure 9 A structural diagram of the third positioning hole and the second connecting hole on the connecting arm of the front-end template provided in this application;

[0037] Figure 10 A structural diagram of the connection between the main body of the front-end template provided in this application and the front bumper beam. Detailed Implementation

[0038] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0039] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0040] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0041] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0042] This application provides a method and system for assembling a front-end template. By using an auxiliary device to establish a connection between the front-end module and the fender, the dimensional chain is shortened, thereby improving the relative accuracy of the fender and the front-end module in the X direction. This improves the pass rate of the gap surface difference between the headlights, front bumper and other components and the surrounding components, thus enhancing the visual quality of the vehicle's front face.

[0043] It should be noted that the length direction of the vehicle body is the X-direction, the width direction is the Y-direction, and the height direction is the Z-direction.

[0044] like Figure 4 As shown, the front-end template assembly system provided in this application includes side crossbeams, a front body panel, a fender 300, and auxiliary devices 200. Combined with... Figure 4 and 5The two sides of the middle part of the main body 107 of the front-end module 100 are respectively connected to the front end plate of the vehicle body in the X direction through the first connection point 101, and the two connecting arms 106 of the front-end module 100 are respectively connected to the side crossbeam in the Z direction.

[0045] like Figure 7 As shown, the front-end module 100 is positioned in the XYZ directions with the front-end plate of the vehicle body through the positioning hole 104, and then tightened in the X direction with the front-end plate of the vehicle body through the bolt at the first connection point 101. Figure 8 As shown, the top surface of the main body 107 of the front-end module 100 has two second positioning holes 105. Combined with... Figure 5 and 9 The top surface of the middle part of the connecting arm 106 of the front-end module 100 is provided with a second connecting hole 102 and a third positioning hole 108 for connecting with the side crossbeam. For example... Figure 7 and 10 As shown, the part of the main body 107 that connects to the front bumper beam 400 has a first connecting hole 103 on the upper side and a third connecting hole 109 on the lower side above and below the front bumper beam 400, respectively.

[0046] Combination Figure 4 and 6 As shown, the auxiliary device 200 has a first positioning pin 204 and a third positioning pin 205 on both sides, and a second positioning pin 206 at the front end. Compared with the first positioning pin 204, the third positioning pin 205 is closer to the main body of the front end module 100; compared with the third positioning pin 205, the second positioning pin 206 is closer to the main body of the front end module 100.

[0047] Specifically, the auxiliary device 200 includes a first support rod 201 extending along the Y direction of the vehicle and a second support rod 202 extending along the Y direction of the vehicle. A first locating pin 204 is fixed to each end of the first support rod 201, and a third locating pin 205 is fixed to each end of the second support rod 202. The auxiliary device also includes two third support rods 203 extending along the X direction of the vehicle. The third support rods 203 are fixedly connected to the first support rod 201 and the second support rod 202, respectively, and a second locating pin 206 is fixed to the front end of each third support rod 203.

[0048] In use, such as Figure 4 As shown, the first positioning pin 204 is inserted into the first positioning hole on the corresponding fender 300, the second positioning pin 206 is inserted into the second positioning hole 105 on the top surface of the main body 107 of the front module 100, and the third positioning pin 205 is inserted into the third positioning hole 108 on the corresponding connecting arm 106. The axes of the first positioning hole, the second positioning hole 105, and the third positioning hole 108 are all parallel to the Z-axis of the vehicle.

[0049] Based on the aforementioned front-end template assembly system, this application provides a front-end template assembly method, including:

[0050] P1: The first connecting bolt (installed on the first connecting hole 103) on the upper side of the connection between the main body 107 of the pre-installed front module 100 and the front anti-collision beam 400, with the axis of the first connecting bolt parallel to the Y direction of the vehicle.

[0051] P2: Attach the middle part of the main body 107 of the front-end module 100 to the front panel of the vehicle body and tighten it in the X direction. For example... Figure 7 As shown, it is positioned by the positioning hole 104 and tightened by the bolt at the first connection point 101.

[0052] P3: Insert the first positioning pins 204 at both ends of the auxiliary device 200 into the first positioning holes on the corresponding fenders 300, and simultaneously rotate the front-end module 100 around the first connecting bolt (extending along the Y direction) so that the second positioning pin 206 of the auxiliary device 200 is inserted into the second positioning hole 105 on the top surface of the main body 107 of the front-end module 100, thereby achieving XY-axis positioning. The axes of both the first and second positioning holes are parallel to the Z-axis of the vehicle.

[0053] It should be noted that in P1, the first connecting bolt is pre-installed and not tightened, so the front-end module can rotate around the first connecting bolt.

[0054] P4: Push the two connecting arms 106 of the front-end module 100, and use the X-axis flexibility of the connecting arms 106 to allow the third positioning pins 205 at both ends of the auxiliary device 200 to be inserted into the third positioning holes 108 (slender holes with the long axis in the X direction) of the corresponding connecting arms 106, thereby achieving Y-axis positioning of the connecting arms. The axis of the third positioning hole 108 is parallel to the Z-axis of the vehicle.

[0055] P5: The connecting arm 106 is tightened to the corresponding side crossbeam using the second connecting bolt, thus fixing the connecting arm to the vehicle body. The axis of the second connecting bolt is parallel to the Z-axis of the vehicle. This application changes the X-axis tightening of the front-end module and the side crossbeam in the prior art to Z-axis tightening. This tightening method, combined with the X-axis tightening between the front-end module and the front panel of the vehicle body, improves the assembly stability of the front-end module.

[0056] P6: Disassemble the auxiliary device, and then tighten the first connecting bolt (inserted into the first connecting hole 103) on the upper side and the third connecting bolt (inserted into the third connecting hole 109) on the lower side at the connection between the main body 107 of the front module 100 and the front anti-collision beam 400.

[0057] In this application, the dimensional chain between the fender and the front-end module of a certain vehicle model is shown in Table 2 below.

[0058] Table 2 Dimension chain between fender and front end module

[0059]

[0060] Compared with existing technologies, the dimensional links in this application are reduced from 10 to 4. Furthermore, the accuracy of the auxiliary device (±0.1mm) is higher than that of the vehicle body (±1.5mm), significantly improving the X-axis positioning accuracy of the fender and front-end module. This results in a 5%–10% improvement in the surface difference between the headlights, front bumper, and other components and surrounding parts, enhancing the overall aesthetic quality of the front end. This application is highly versatile and applicable to vehicles with similar structures.

[0061] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A method of assembling a front end template, characterized by, The application relates to a front-end module assembly method and device. A first connecting bolt is arranged on the upper side of the connecting position between the main body of the front-end module and the front anti-collision beam, and the axis of the first connecting bolt is parallel to the Y direction of the vehicle; The middle part of the main body of the front-end module is attached to the front end plate of the vehicle body and is fastened in the X direction; The first positioning pins at the two ends of the auxiliary device are respectively inserted into the first positioning holes in the corresponding fenders, and the front-end module is rotated around the first connecting bolt, so that the second positioning pin of the auxiliary device is inserted into the second positioning hole on the top surface of the main body of the front-end module, and the axes of the first positioning holes and the second positioning hole are parallel to the Z direction of the vehicle; wherein the two sides of the auxiliary device are respectively provided with first positioning pins and third positioning pins, and the front end of the auxiliary device is provided with a second positioning pin; the third positioning pin is closer to the main body of the front-end module than the first positioning pin; the second positioning pin is closer to the main body of the front-end module than the third positioning pin; The two connecting arms of the front-end module are pushed, so that the third positioning pins at the two ends of the auxiliary device are respectively inserted into the third positioning holes in the corresponding connecting arms, and the axis of the third positioning hole is parallel to the Z direction of the vehicle; The connecting arm and the corresponding side beam are fastened by using a second connecting bolt, and the axis of the second connecting bolt is parallel to the Z direction of the vehicle; The auxiliary device is disassembled, and then the first connecting bolt on the upper side and the third connecting bolt on the lower side of the connecting position between the main body of the front-end module and the front anti-collision beam are fastened.

2. The method of assembling a front end template of claim 1, wherein, The auxiliary device comprises a first supporting rod extending along the Y direction of the vehicle, and the two ends of the first supporting rod are respectively fixed with a first positioning pin.

3. The method of assembling a front end template of claim 2, wherein, The auxiliary device comprises a second supporting rod extending along the Y direction of the vehicle, and the two ends of the second supporting rod are respectively fixed with a third positioning pin; The second supporting rod is closer to the main body of the front-end module than the first supporting rod.

4. The method of assembling a front end template of claim 3, wherein, The auxiliary device comprises two third supporting rods extending along the X direction of the vehicle, the third supporting rods are fixedly connected with the first supporting rod and the second supporting rod respectively, and the front ends of the third supporting rods are respectively fixed with a second positioning pin.

5. The method of assembling a front end template of claim 1, wherein, The connecting arm of the front-end module is provided with a connecting hole connected with the side beam, and the connecting hole and the third positioning hole are arranged on the top surface of the middle part of the connecting arm.

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