A method and structure for controlling the size of a split headlight and front bumper.

Abstract

This invention belongs to the field of automotive manufacturing dimensional engineering technology, specifically relating to a method and structure for controlling the dimensions of a split headlight and a front bumper cover. The front frame is fixed to the vehicle body, and the front bumper cover is fixed to the front frame. Split headlights are mounted on both sides of the front bumper cover. A front frame positioning mechanism is provided at the front end of the frame, and a first split headlight positioning mechanism and a second split headlight positioning mechanism are respectively provided at the lower end and outer side of the front frame. This invention first installs the split headlights using a fixture, breaking the chain of vehicle body dimensions and thus ensuring the spatial position dimensions of the split headlights. Then, the front bumper cover is installed, relying on the same positioning points of the fixture and the front bumper cover to ensure the spatial position dimensions of the front bumper cover, thereby ensuring comprehensive dimensional control of the headlights and the front bumper cover. This solves the problem caused by poor matching of the peripheral dimensions of the split headlights and the front bumper cover.

Description

Technical Field

[0001] This invention belongs to the field of automotive manufacturing dimensional engineering technology, specifically relating to a method and structure for controlling the dimensions of a split headlight and a front bumper grille. Background Technology

[0002] With split headlights becoming a popular trend, more and more automakers are adopting this design to enhance their product appeal. The size, shape, and function of split headlights have changed significantly, making traditional integration with bumper covers impossible. During assembly in the production workshop, the split headlights and bumper covers must be installed separately on the vehicle body. However, due to accumulated manufacturing errors in the vehicle body, as well as errors in the bumper covers and split headlights, problems such as gaps and mismatches between the headlights and front bumper covers can occur, affecting the perceived quality for consumers. In more serious cases, interference between parts during assembly can lead to assembly failures and production line stoppages.

[0003] Ensuring dimensional matching between split headlights and the front bumper has become a research topic for major automakers. Current technology involves mounting the daytime running lights and headlights separately onto the body panels and then snapping them into the front bumper unit to achieve a complete dimensional match. This approach relies on minimal deviations in body dimensions; however, large deviations not only fail to guarantee a proper match but also present assembly difficulties and even fail to snap them into place, failing to fundamentally address the issue of accumulated manufacturing deviations during actual production.

[0004] The current mainstream approach to eliminating cumulative manufacturing errors in vehicle body dimensions generally employs online punching to cut dimensions, thereby ensuring a complete dimensional match between the front bumper and headlights. However, this solution is costly, requiring additional online punching stations and equipment. Furthermore, it necessitates redefining the product structure in conjunction with the punching process, making it suitable only for new model development projects. Model year updates and facelifts, limited by the fixed body structure, cannot implement online punching. Therefore, the mainstream online punching solution is not only costly but also has certain limitations. Summary of the Invention

[0005] To overcome the above problems, this invention provides a method and structure for controlling the dimensions of a split headlight and a front bumper grille. By first installing the split headlight using a fixture, the chain of vehicle body dimensions is broken, thereby ensuring the spatial position dimensions of the split headlight. Then, the front bumper grille is installed, and by relying on the same positioning points of the fixture and the front bumper grille, the spatial position dimensions of the front bumper grille are ensured, thereby ensuring comprehensive dimensional control of the headlight and the front bumper grille. This solves the problem caused by poor matching of the peripheral dimensions of the split headlight and the front bumper grille.

[0006] A split headlight and front bumper size control structure includes a vehicle body 1, a split headlight 2, a fixture 3, a front frame 4, and a front bumper 5; wherein the front frame 4 is fixed to the front anti-collision beam of the vehicle body 1, the front bumper 5 is fixed to the front frame 4, and the split headlight 2 is installed in the openings on both sides of the front bumper 5, and the split headlight 2 is fixed to the vehicle body 1.

[0007] The device 3 includes a frame 31, a front frame positioning mechanism, and a split headlight positioning mechanism; wherein the front end of the frame 31 is provided with a front frame positioning mechanism, and the lower end and the outer side of the front end are respectively provided with a first split headlight positioning mechanism and a second split headlight positioning mechanism.

[0008] The frame 31 is a rectangular frame. The front frame positioning mechanism includes a positioning round pin 311, a positioning prismatic pin 312, a first positioning plate 313, a first clamping device 314 and a second clamping device 318 for clamping the front frame 4. Connecting frames 322 are fixed on both sides of the upper horizontal bar of the rectangular frame. The first clamping device 314 is fixed above the connecting frame 322 by the second positioning plate 3141. The positioning prismatic pin 312 is fixed at the lower front end of one side of the connecting frame 322, and the positioning round pin 311 is fixed at the lower front end of the other side of the connecting frame 322. The second clamping device 318 is provided on both sides of the lower horizontal bar of the frame 31. The first positioning plate 313 is fixed on the horizontal bar of the frame 31 inside the second clamping device 318. A first split headlight positioning mechanism is fixed at the end of the horizontal bar of the frame 31 outside the second clamping device 318, and a second split headlight positioning mechanism is provided on the outside of the vertical bar of the frame 31.

[0009] The first clamping device 314 includes a second positioning plate 3141, a first cylinder 3142, a first clamping rod 3143, and a first cylinder connecting plate 3144. The second positioning plate 3141 is fixed above the connecting frame 322, the first cylinder 3142 is fixed on the first cylinder connecting plate 3144, the second positioning plate 3141 and the first cylinder connecting plate 3144 are connected together by a pin, and the first clamping rod 3143 is connected to the second positioning plate 3141 by a pin. The upper part of the first clamping rod 3143 is aligned with the telescopic end of the first cylinder 3142, and the lower part is aligned with the second positioning plate 3141.

[0010] The second positioning plate 3141 includes a horizontal plate and a vertical plate fixed together. The top of the vertical plate extends towards the front end to form an extension plate. The horizontal plate is fixed on the connecting frame 322. The rear end of the extension plate and the first cylinder connecting plate 3144 are connected together by a pin. The first clamping rod 3143 is connected to the front end of the extension plate by a pin.

[0011] The second clamping device 318 includes a second cylinder 3182, a second clamping rod 3183, and a second cylinder connecting plate 3184. The second cylinder 3182 is fixed on the second cylinder connecting plate 3184. A first connecting plate 323 is fixed on both sides of the crossbar below the frame 31. The bottom of the first connecting plate 323 extends forward to form a connecting short plate 3181. The rear end of the connecting short plate 3181 and the second cylinder connecting plate 3184 are connected together by a pin. The second clamping rod 3183 is connected to the front end of the connecting short plate 3181 by a pin. The lower part of the second clamping rod 3183 is aligned with the telescopic end of the second cylinder 3182, and the upper part is aligned with the first connecting plate 323.

[0012] The first split headlight positioning mechanism includes a first guide block 315, a first positioning block 316, a first irregularly shaped guide positioning block 317, and a third clamping device 319 for clamping the split headlight 2. The first positioning block 316 is fixed to the end of the lower crossbar of the frame 31 by a mounting plate. The first irregularly shaped guide positioning block 317 is provided on the lower crossbar of the frame 31 inside the first positioning block 316. The first guide block 315 is connected to the mounting plate below the first positioning block 316 by an extension plate. The third clamping device 319 is provided on the mounting plate between the first guide block 315 and the first irregularly shaped guide positioning block 317.

[0013] The third clamping device 319 for clamping the split headlight 2 includes a third cylinder 3192, a third clamping rod 3193, and a third cylinder connecting plate 3194. The third cylinder 3192 is fixed on the third cylinder connecting plate 3194. A second connecting plate 3191 is provided on the mounting plate between the first guide block 315 and the first irregular guide positioning block 317. A first connecting block 324 is provided at the front end of the second connecting plate 3191. The middle part of the first connecting block 324 and the third cylinder connecting plate 3194 are connected together by a pin. The third clamping rod 3193 is connected to the front end of the first connecting block 324 by a pin. The left side of the third clamping rod 3193 is aligned with the second connecting plate 3191, and the right side is aligned with the telescopic end of the third cylinder 3192.

[0014] The second split headlight positioning mechanism includes a bracket, an upper positioning mechanism, and a lower positioning mechanism, wherein the bracket is fixed to the outside of the vertical rod of the frame 31, and the upper positioning mechanism and the lower positioning mechanism are respectively located at the upper and lower ends in front of the bracket.

[0015] The upper positioning mechanism includes a second irregularly shaped guide positioning block 3217, a fourth clamping device 320 for clamping the split headlight 2, and a third positioning plate 3201, wherein the third positioning plate 3201 is fixed above the bracket, the fourth clamping device 320 is provided above the third positioning plate 3201, and the second irregularly shaped guide positioning block 3217 is provided below the third positioning plate 3201.

[0016] The lower positioning mechanism includes a third irregularly shaped guide positioning block 3161, a fifth clamping device 321 for clamping the split headlight 2, a fourth positioning plate 3211, and a second connecting block 3215. The fourth positioning plate 3211 is fixed below the bracket, and the second connecting block 3215 is fixed on it. The third irregularly shaped guide positioning block 3161 is fixed at the front end of the second connecting block 3215. The fifth clamping device 321 is connected to the second connecting block 3215 through a connecting rod 3216.

[0017] The fourth clamping device 320 includes a fourth cylinder 3202, a fourth clamping rod 3203, and a fourth cylinder connecting plate 3204. The fourth cylinder 3202 is fixed on the fourth cylinder connecting plate 3204. The middle part of the crossbar above the third positioning plate 3201 and the fourth cylinder connecting plate 3204 are connected together by a pin. The fourth clamping rod 3203 is connected to the front end of the crossbar above the third positioning plate 3201 by a pin. The upper part of the fourth clamping rod 3203 is aligned with the telescopic end of the fourth cylinder 3202, and the lower part is aligned with the second irregular guide positioning block 3217.

[0018] The fifth clamping device 321 includes a fifth cylinder 3212, a fifth clamping rod 3213, and a fifth cylinder connecting plate 3214. The fifth cylinder 3212 is fixed on the fifth cylinder connecting plate 3214. The top of the connecting rod 3216 is fixed on the outer side of the second connecting block 3215. The fifth cylinder connecting plate 3214 and the connecting rod 3216 are connected together by a pin. The fifth clamping rod 3213 is connected to the bottom of the connecting rod 3216 by a pin. The top of the fifth clamping rod 3213 is aligned with the front end face of the connecting rod 3216, and the bottom is aligned with the telescopic end of the fifth cylinder 3212.

[0019] The front frame 4 has a mounting surface 42 with a nut, a positioning square hole 41, and a mounting nut surface 44 on both sides from top to bottom, and a second mounting nut surface 45 at the bottom of the front frame 4.

[0020] The front bumper 5 has a first fixing surface 52, a positioning pin 51, and a second fixing surface 53 arranged sequentially from top to bottom on both sides inside. The inner ring of the opening on both sides of the front bumper 5 is provided with a flange 54. The front bumper 5 has a fixing surface 55 at the bottom. The positioning pin 51 of the front bumper 5 is positioned in the positioning square hole 41 of the front frame 4. The first fixing surface 52 and the second fixing surface 53 are respectively fastened to the mounting surface 42 and the mounting nut surface 44 on the front frame 4. The fixing surface 55 is fastened to the second mounting nut surface 45 on the front frame 4.

[0021] The vehicle body 1 is provided with a lower headlight bracket 11, an upper headlight bracket 12, and a side headlight bracket 13; the outer ring of the split headlight 2 is provided with an X-direction mounting hole 21 and a Y-direction fixing surface 22, and the lower part of the split headlight 2 is provided with an anti-detachment guide bracket 23. The outer ring of the lens of the split headlight 2 is provided with multiple assembly guides 24, and the anti-detachment guide bracket 23 and the assembly guides 24 are both engaged with the flange 54; the split headlight 2 is fastened to the upper headlight bracket 12 and the lower headlight bracket 11 through the X-direction mounting hole 21, and the split headlight 2 is fastened to the side headlight bracket 13 through the Y-direction fixing surface 22.

[0022] An adjustable nut 6 is installed inside the X-direction mounting hole 21.

[0023] The split headlights 2 are fastened to the upper headlight bracket 12 and the lower headlight bracket 11 respectively through the adjustable nuts 6 in the X-direction mounting holes 21.

[0024] The adjustable nut 6 consists of an inner nut 61 and an outer nut 62, wherein the inner nut 61 and the outer nut 62 are fitted together by their own internal threads, and the upper part of the inner nut 61 is provided with exposed threads for threaded connection into the X-direction mounting hole 21 on the split headlight 2.

[0025] The inner sides of the connecting frame 322 of the positioning round pin 311 and the positioning prismatic pin 312 are respectively provided with positioning plates for cooperating with the mounting surface 42 and the mounting plane 43 on the front end frame 4.

[0026] A method for controlling the dimensions of a split headlight and front bumper grille includes the following:

[0027] Step one: First, install the split headlight 2 onto the fixture 3 to position the split headlight 2. Specifically:

[0028] The first guide block 315 is used in conjunction with the bottom and side surfaces of the anti-detachment guide bracket 23 of the split headlight 2 to position the initial installation position of one side of the lower part of the split headlight 2; the third irregularly shaped guide positioning block 3161 is used in conjunction with the contour surface of the other side of the lower part of the split headlight 2; the outer plane of the first irregularly shaped guide positioning block 317 is used in conjunction with the right contour of the split headlight 2; and the second irregularly shaped guide positioning block 3217 is used in conjunction with the upper contour of the split headlight 2; thus, the initial spatial placement of the split headlight 2 is achieved.

[0029] Step two: Hold the split headlight 2 and move it within the positioning space of the fixture 3, ensuring that the assembly guide 24 at the bottom of the split headlight 2 and the Z-direction fixing surfaces of the first positioning block 316 and the third irregularly shaped guide positioning block 3161 on the fixture 3 are in contact; ensuring that the right contour surface of the split headlight 2 and the left Y-direction of the first irregularly shaped guide positioning block 317 are in contact; ensuring that the front housing of the split headlight 2 and the X-direction surfaces of the first positioning block 316, the second irregularly shaped guide positioning block 3217, and the third irregularly shaped guide positioning block 3161 are in contact; thus achieving precise positioning of the split headlight 2 on the fixture 3.

[0030] Step 3: The third cylinder 3192, the fourth cylinder 3202, and the fifth cylinder 3212 start working simultaneously, causing the extension end of the third cylinder 3192 to drive the third clamping rod 3193 to clamp the back housing of the split headlight 2, the extension end of the fourth cylinder 3202 to drive the fourth clamping rod 3203 to clamp the back housing of the split headlight 2, and the extension end of the fifth cylinder 3212 to drive the fifth clamping rod 3213 to clamp the back housing of the split headlight 2.

[0031] Step 4: After the front frame 4 and the body 1 are assembled by connecting them with fastening bolts using their own mounting points, the fixture 3 with the split headlights 2 is moved and fixed to the fixture 3. Specifically, the positioning round pin 311 is engaged with the square hole 41 on one side of the front frame 4, and the positioning diamond pin 312 is engaged with the square hole 41 on the other side of the front frame 4.

[0032] Continue pushing the fixture 3 forward until the second positioning plate 3141 and the first positioning plate 313 on the fixture 3 contact the corresponding mounting surface 42 and mounting plane 43 on the front frame 4, respectively. At this time, the first clamping device 314 and the second clamping device 318 begin to work; specifically:

[0033] The first cylinder 3142 on the first clamping device 314 extends and retracts, driving the first clamping rod 3143 to clamp the back of the front frame 4. The second cylinder 3182 on the second clamping device 318 extends and retracts, driving the second clamping rod 3183 to clamp the back of the front frame 4. This achieves a stable connection between the positioning front frame 4 and the fixture 3.

[0034] Step 5: Fix the split headlight 2 to the vehicle body 1; specifically: the split headlight 2 is fastened to the upper headlight bracket 12 and the lower headlight bracket 11 through the X-direction mounting hole 21, and the split headlight 2 is fastened to the side headlight bracket 13 through the Y-direction fixing surface 22.

[0035] Step six: Control the retraction ends of the third cylinder 3192, the fourth cylinder 3202 and the fifth cylinder 3212 to retract, thereby detaching the split headlight 2 from the fixture 3; then control the retraction ends of the first cylinder 3142 and the second cylinder 3182 to retract, thereby detaching the front frame 4 from the fixture 3.

[0036] Step 7: Remove fixture 3, and then complete the installation of the front bumper 5 and the front frame 4. Specifically: First, align the positioning pin 51 on the front bumper 5 with the positioning square hole 41 on the front frame 4, and then gently push it by hand to ensure that the positioning pin 51 on the front bumper 5 enters the square hole of the front frame 4; the flange 54 of the front bumper 5 cooperates with the anti-drop guide bracket 23 and assembly guide 24 on the split headlight 2, and fixes the mounting surface 42, mounting nut surface 44, and second mounting nut surface 45 of the front frame 4 to the first fixing surface 52, the second fixing surface 53, and the fixing surface 55 of the front bumper 5 by bolts; thereby realizing the size control of the split headlight 2 and the front bumper 5.

[0037] The beneficial effects of this invention are:

[0038] 1. Both the fixture and the front bumper are fixed to the front frame, and the positioning points are consistent, which can effectively reduce the size space after the front bumper is installed.

[0039] 2. The fixture integrates fixing and positioning components, forming a one-piece frame structure, thereby ensuring that the spatial position of the positioning component of the split headlight is consistent with that of the front bumper.

[0040] 3. The positioning components on the fixture are gap surface controlled, which can realize the error of key evaluation dimensions to zero, further reducing dimensional errors; and it is equipped with guides to ensure the smooth positioning of the split headlights on the fixture.

[0041] 4. The positioning components adopt a more sophisticated structure, which can concentrate positioning and guidance in up to three directions into one unit block as needed, which can more effectively reduce the weight of the equipment and optimize the space layout.

[0042] 5. The fixture is equipped with a fixed electric wrench, which allows for assembly in blind spots and reduces the difficulty of operation.

[0043] 6. The split headlights are equipped with adjustable nuts to further compensate for the dimensional deviations in the X-direction of the vehicle body. While ensuring the X-direction surface difference dimensions, it can also avoid assembly deformation and other problems caused by poor X-direction fit.

[0044] 7. The split headlights are equipped with anti-detachment brackets, which can further ensure the stability after assembly.

[0045] 8. The split headlights are equipped with assembly guides to ensure smooth installation of the front bumper.

[0046] In summary, this invention not only ensures the perfect matching dimensions of the split headlights and front bumper, but also achieves ease of operation and assembly. Furthermore, it reduces the dimensional accuracy requirements of the vehicle body, avoiding assembly difficulties and quality problems such as defective parts dimensions during assembly.

[0047] This invention can also reduce the investment in tooling equipment for current mainstream online punching, especially for model year and modified models, it can effectively reduce body design changes, reduce investment costs, shorten development cycle, and achieve precise control of dimensions. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0049] Figure 1 This is an exploded view of the overall structure of the present invention.

[0050] Figure 2 This is a schematic diagram of the vehicle body structure of the present invention.

[0051] Figure 3 This is a schematic diagram of the split headlight structure of the present invention.

[0052] Figure 4 This is a schematic diagram of the front-end framework structure of the present invention.

[0053] Figure 5 This is a schematic diagram of the front protective mask structure of the present invention.

[0054] Figure 6 This is a schematic diagram of the fixture structure of the present invention.

[0055] Figure 7 This is a schematic diagram of the structure of the device part of the present invention.

[0056] Figure 8 This is a schematic diagram of the first clamping device of the fixture of the present invention.

[0057] Figure 9 for Figure 8 A partial structural diagram.

[0058] Figure 10 This is a schematic diagram of the structure of the second clamping device of the present invention.

[0059] Figure 11 This is a detailed schematic diagram of one side of the device of the present invention.

[0060] Figure 12 This is a schematic diagram of the third clamping device of the present invention.

[0061] Figure 13 This is a schematic diagram of the fourth clamping device of the present invention.

[0062] Figure 14 This is a schematic diagram of the fifth clamping device of the present invention.

[0063] Figure 15 This is a schematic diagram of the adjustable nut structure of the present invention.

[0064] Figure 16 This is a schematic diagram of the assembly of the split headlight of the present invention.

[0065] Figure 17 This is a schematic diagram of the installation of the front protective mask of the present invention.

[0066] Figure 18 This is a schematic diagram showing the completed installation of the present invention.

[0067] The components include: vehicle body 1, lower headlight bracket 11, upper headlight bracket 12, side headlight bracket 13, split headlight 2, X-axis mounting hole 21, Y-axis fixing surface 22, anti-fall guide bracket 23, assembly guide 24, fixture 3, frame 31, positioning round pin 311, positioning prismatic pin 312, first positioning plate 313, first clamping device 314, second positioning plate 3141, first cylinder 3142, first clamping rod 3143, first cylinder connecting plate 3144, first guide block 315, first positioning block 316, third irregular guide positioning block 3161, first irregular guide positioning block 317, second clamping device 318, connecting short plate 3181, second cylinder 3182, second clamping rod 3183, second cylinder connecting plate 3184, third clamping device 319, second connecting plate 3191, and third cylinder. 3192, Third clamping rod; 3193, Third cylinder connecting plate; 3194, Fourth clamping device; 320, Third positioning plate; 3201, Fourth cylinder; 3202, Fourth clamping rod; 3203, Fourth cylinder connecting plate; 3204, Fifth clamping device; 321, Fourth positioning plate; 3211, Fifth cylinder; 3212, Fifth clamping rod; 3213, Fifth cylinder connecting plate; 3214, Second connecting block; 3215, Connecting rod; 3216, Second irregular guide positioning block; 3217, Connecting frame; 322, Electric wrench; 32, Valve island; 33, Moving structure; 34, Front frame; 41, Positioning square hole; 42, Mounting surface; 43, Mounting plane; 44, Mounting nut surface; 5, Front guard cover; 51, Positioning pin; 52, First fixing surface; 53, Flanged edge; 54, Fixing surface; 55, Adjustable nut; 6, Inner nut; 61, Outer nut; 62. Detailed Implementation

[0068] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0069] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0070] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0071] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0072] Example 1

[0073] Depend on Figures 1-15 It is known that a split headlight and front bumper size control structure includes a vehicle body 1, a split headlight 2, a fixture 3, a front frame 4, a front bumper 5, and an adjustable nut 6; wherein the front frame 4 (with two fixing points on each side of the middle part of the front frame 4, which are fixed together with the front anti-collision beam of the vehicle body 1 by bolts) is fixed to the front anti-collision beam of the vehicle body 1, the front bumper 5 is fixed to the front frame 4, and the split headlight 2 is installed in the openings on both sides of the front bumper 5, and the split headlight 2 is fixed to the vehicle body 1;

[0074] The fixture 3 includes a frame 31, (the fixture 3 also includes an electric wrench 32, which is fixed to the outer sides of both ends of the frame 31 by an extension bracket; since the split headlight 2 has a fixing point at the bottom for fastening to the vehicle body 1, the operating space in this part is small, and the electric wrench 32 can realize blind spot assembly operation, improving work efficiency), a valve island 33, a moving structure 34 (the moving structure 34 is set on the top of the frame 31, which is the prior art; the moving structure 34 refers to the upper connecting structure set on the top of the frame 31, which has a rotating shaft in the middle and a guide rail on the top, and is connected to the steel structure in the fixed workshop; through the moving structure 34, the fixture 3 can move and rotate in space, satisfying the convenience of the production line), a front frame positioning mechanism, and a split headlight positioning mechanism; wherein the valve island 33 is fixed to the upper crossbar at the rear end of the frame 31 by fastening bolts; the front end of the frame 31 is provided with a front frame positioning mechanism, and the lower end and the outer side of the front end are respectively provided with a first split headlight positioning mechanism and a second split headlight positioning mechanism.

[0075] The frame 31 is a rectangular frame. The front frame positioning mechanism includes a positioning pin 311, a positioning rhomboid pin 312, a first positioning plate 313, a first clamping device 314 and a second clamping device 318 for clamping the front frame 4. Connecting frames 322 are fixed to both sides of the upper crossbar of the rectangular frame. The first clamping device 314 is fixed above the connecting frame 322 via the second positioning plate 3141. The positioning rhomboid pin 312 is fixed to the lower front end of one side of the connecting frame 322 via a connecting block and an adjusting shim. The positioning pin 311... 11 is fixed to the lower front end of the connecting frame 322 on the other side by connecting blocks and adjusting shims; the lower crossbar of the frame 31 is provided with a second clamping device 318 on both sides, and a first positioning plate 313 is fixed on the crossbar of the frame 31 inside the second clamping device 318 (the first positioning plate 313 is fixed on the lower crossbar of the frame 31 by connecting plates); a first split headlight positioning mechanism is fixed at the end of the crossbar of the frame 31 outside the second clamping device 318, and a second split headlight positioning mechanism is provided on the outside of the vertical bar of the frame 31.

[0076] The first clamping device 314 includes a second positioning plate 3141, a first cylinder 3142, a first clamping rod 3143, and a first cylinder connecting plate 3144. The second positioning plate 3141 is fixed above the connecting frame 322, the first cylinder 3142 is fixed on the first cylinder connecting plate 3144, the upper part of the second positioning plate 3141 and the lower part of the first cylinder connecting plate 3144 are connected together by a pin, and the first clamping rod 3143 is connected to the second positioning plate 3141 by a pin. The upper part of the first clamping rod 3143 is aligned with the telescopic end of the first cylinder 3142, and the lower part is aligned with the second positioning plate 3141.

[0077] The second positioning plate 3141 includes a horizontal plate and a vertical plate fixed together. The top of the vertical plate extends towards the front end to form an extension plate. The horizontal plate is fixed on the connecting frame 322. The rear end of the extension plate and the first cylinder connecting plate 3144 are connected together by a pin. The first clamping rod 3143 is connected to the front end of the extension plate by a pin.

[0078] The second clamping device 318 includes a second cylinder 3182, a second clamping rod 3183, and a second cylinder connecting plate 3184. The second cylinder 3182 is fixed on the second cylinder connecting plate 3184. A first connecting plate 323 is fixed on both sides of the crossbar below the frame 31. The bottom of the first connecting plate 323 extends forward to form a connecting short plate 3181. The rear end of the connecting short plate 3181 and the second cylinder connecting plate 3184 are connected together by a pin. The second clamping rod 3183 is connected to the front end of the connecting short plate 3181 by a pin. The lower part of the second clamping rod 3183 is aligned with the telescopic end of the second cylinder 3182, and the upper part is aligned with the first connecting plate 323.

[0079] The first split headlight positioning mechanism includes a first guide block 315, a first positioning block 316, a first irregularly shaped guide positioning block 317, and a third clamping device 319 for clamping the split headlight 2. The first positioning block 316 is fixed to the end of the lower crossbar of the frame 31 by a mounting plate and an adjusting shim. The first irregularly shaped guide positioning block 317 is provided on the lower crossbar of the frame 31 inside the first positioning block 316. The first guide block 315 is connected to the mounting plate below the first positioning block 316 by an extension plate. The third clamping device 319 is provided on the mounting plate between the first guide block 315 and the first irregularly shaped guide positioning block 317.

[0080] The third clamping device 319 for clamping the split headlight 2 includes a third cylinder 3192, a third clamping rod 3193, and a third cylinder connecting plate 3194. The third cylinder 3192 is fixed on the third cylinder connecting plate 3194. A second connecting plate 3191 is provided on the mounting plate between the first guide block 315 and the first irregular guide positioning block 317. A first connecting block 324 is provided at the front end of the second connecting plate 3191. The middle part of the first connecting block 324 and the third cylinder connecting plate 3194 are connected together by a pin. The third clamping rod 3193 is connected to the front end of the first connecting block 324 by a pin. The left side of the third clamping rod 3193 is aligned with the second connecting plate 3191, and the right side is aligned with the telescopic end of the third cylinder 3192.

[0081] The second split headlight positioning mechanism includes a bracket, an upper positioning mechanism, and a lower positioning mechanism, wherein the bracket is fixed to the outside of the vertical rod of the frame 31, and the upper positioning mechanism and the lower positioning mechanism are respectively located at the upper and lower ends in front of the bracket.

[0082] The upper positioning mechanism includes a second irregularly shaped guide positioning block 3217, a fourth clamping device 320 for clamping the split headlight 2, and a third positioning plate 3201, wherein the third positioning plate 3201 is fixed above the bracket, the fourth clamping device 320 is provided above the third positioning plate 3201, and the second irregularly shaped guide positioning block 3217 is provided below the third positioning plate 3201.

[0083] The lower positioning mechanism includes a third irregularly shaped guide positioning block 3161, a fifth clamping device 321 for clamping the split headlight 2, a fourth positioning plate 3211, and a second connecting block 3215. The fourth positioning plate 3211 is fixed below the bracket, and the second connecting block 3215 is fixed on it. The third irregularly shaped guide positioning block 3161 is fixed at the front end of the second connecting block 3215. The fifth clamping device 321 is connected to the second connecting block 3215 through a connecting rod 3216.

[0084] The fourth clamping device 320 includes a fourth cylinder 3202, a fourth clamping rod 3203, and a fourth cylinder connecting plate 3204. The fourth cylinder 3202 is fixed on the fourth cylinder connecting plate 3204. The middle part of the upper horizontal bar of the third positioning plate 3201 (the third positioning plate 3201 includes a lower horizontal bar, a vertical bar, and an upper horizontal bar, wherein the upper horizontal bar and the lower horizontal bar are respectively fixed at the upper and lower ends of the vertical bar in the front-rear direction) and the fourth cylinder connecting plate 3204 are connected together by a pin. The fourth clamping rod 3203 is connected to the front end of the upper horizontal bar of the third positioning plate 3201 by a pin, and the upper part of the fourth clamping rod 3203 is aligned with the telescopic end of the fourth cylinder 3202, and the lower part is aligned with the second irregular guide positioning block 3217.

[0085] The fifth clamping device 321 includes a fifth cylinder 3212, a fifth clamping rod 3213, and a fifth cylinder connecting plate 3214. The fifth cylinder 3212 is fixed on the fifth cylinder connecting plate 3214. The top of the connecting rod 3216 is fixed on the outer side of the second connecting block 3215. The fifth cylinder connecting plate 3214 and the connecting rod 3216 are connected together by a pin. The fifth clamping rod 3213 is connected to the bottom of the connecting rod 3216 by a pin. The top of the fifth clamping rod 3213 is aligned with the front end face of the connecting rod 3216, and the bottom is aligned with the telescopic end of the fifth cylinder 3212.

[0086] The front frame 4 has a mounting surface 42 with a nut, a positioning square hole 41, a mounting nut surface 44 and a mounting plane 43 on both sides from top to bottom (the mounting plane 43 is used as a mounting point for the auxiliary tool to be positioned on the front frame 4, in order to highlight the feature points on the front frame 4 and its subsequent function). The bottom of the front frame 4 has a second mounting nut surface 45.

[0087] The front face shield 5 has a first fixing surface 52, a positioning pin 51, and a second fixing surface 53 arranged sequentially from top to bottom on both sides inside. The inner ring of the opening on both sides of the front face shield 5 is provided with a flange 54. The front face shield 5 has a fixing surface 55 at the bottom. The positioning pin 51 of the front face shield 5 is positioned in the positioning square hole 41 of the front frame 4. The first fixing surface 52 and the second fixing surface 53 are respectively fastened to the mounting surface 42 and the mounting nut surface 44 on the front frame 4 by bolts. The fixing surface 55 is fastened to the second mounting nut surface 45 on the front frame 4 by bolts.

[0088] The vehicle body 1 is equipped with a lower headlight bracket 11, an upper headlight bracket 12, and a side headlight bracket 13. The outer ring of the split headlight 2 is provided with multiple X-direction mounting holes 21 and a Y-direction fixing surface 22. The split headlight 2 is provided with an anti-detachment guide bracket 23 below it. The outer ring of the lens of the split headlight 2 is provided with multiple assembly guides 24. The anti-detachment guide bracket 23 and the assembly guides 24 are both engaged with the flange 54. The assembly guides 24 serve as assembly guides and cooperate with the flange 54. The anti-detachment guide bracket 23 cooperates with the flange 54 of the front bumper 5 to prevent the split headlight 2 and the front bumper 5 from falling off, ensuring the convenience of assembly and the stability after assembly. The split headlight 2 is fastened to the upper headlight bracket 12 and the lower headlight bracket 11 through the X-direction mounting holes 21, and the split headlight 2 is fastened to the side headlight bracket 13 through the Y-direction fixing surface 22.

[0089] An adjustable nut 6 is installed inside the X-direction mounting hole 21.

[0090] The split headlights 2 are fastened to the upper headlight bracket 12 and the lower headlight bracket 11 respectively through the adjustable nuts 6 in the X-direction mounting holes 21.

[0091] The adjustable nut 6 consists of an inner nut 61 and an outer nut 62, wherein the inner nut 61 and the outer nut 62 are fitted together by their own internal threads, and the upper part of the inner nut 61 is provided with exposed threads for threaded connection into the X-direction mounting hole 21 on the split headlight 2.

[0092] The inner sides of the connecting frame 322 of the positioning round pin 311 and the positioning prismatic pin 312 are respectively provided with positioning plates for cooperating with the mounting surface 42 and the mounting plane 43 on the front end frame 4.

[0093] The valve island 33 is connected to the air passages of the first cylinder 3142, the second cylinder 3182, the third cylinder 3192, the fourth cylinder 3202 and the fifth cylinder 3212 respectively.

[0094] A method for controlling the dimensions of a split headlight and front bumper grille, such as Figure 16-18 As shown, it includes the following:

[0095] Step 1: Confirm that the fixture 3 is in the fully open position. First, install the split headlight 2 onto the fixture 3 to position the split headlight 2. Specifically:

[0096] Visually inspect the positions of the first guide block 315, the first irregular-shaped guide positioning block 317, the second irregular-shaped guide positioning block 3217, and the third irregular-shaped guide positioning block 3161. Using the first guide block 315 in conjunction with the bottom and side surfaces of the anti-detachment guide bracket 23 of the split headlight 2, locate the initial installation position of one side of the lower part of the split headlight 2. Utilize the protruding upper surface of the lower part of the third irregular-shaped guide positioning block 3161 in conjunction with the contour surface of the other side of the lower part of the split headlight 2 to align the lower part of the split headlight 2. Utilize the outer surface of the first irregular-shaped guide positioning block 317 in conjunction with the right contour of the split headlight 2 to align the left and right positions of the split headlight 2. Then, utilize the upper part of the second irregular-shaped guide positioning block 3217 in conjunction with the upper contour of the split headlight 2 to align the upper part of the split headlight 2. This achieves the initial spatial placement of the split headlight 2.

[0097] Step two: Continue to hold the split headlight 2 by hand and move it slightly up, down, left, right, back and forth within the positioning space of the fixture 3. Move it up and down to ensure that the two assembly guides 24 at the bottom of the split headlight 2 are in contact with the Z-direction fixing surfaces of the first positioning block 316 and the third irregular guide positioning block 3161 on the fixture 3. Move it left and right to ensure that the right contour surface of the split headlight 2 is in contact with the left Y-direction of the first irregular guide positioning block 317. Move it back and forth to ensure that the front housing of the split headlight 2 is in contact with the X-direction surfaces of the first positioning block 316, the second irregular guide positioning block 3217, and the third irregular guide positioning block 3161. The above actions achieve precise positioning of the split headlight 2 on the fixture 3.

[0098] Step 3: The valve island on the drive device 3 is activated, and the air circuit begins to operate. The third cylinder 3192, the fourth cylinder 3202, and the fifth cylinder 3212 start working simultaneously. The telescopic end of the third cylinder 3192 drives the third clamping rod 3193 to clamp the back housing of the split headlight 2. The telescopic end of the fourth cylinder 3202 drives the fourth clamping rod 3203 to clamp the back housing of the split headlight 2. The telescopic end of the fifth cylinder 3212 drives the fifth clamping rod 3213 to clamp the back housing of the split headlight 2.

[0099] As described above, the positioning point is on the front of the housing of the split headlight 2, and the clamping point for cylinder activation is on the back of the housing of the split headlight 2. They interact to fix the spatial position of the split headlight 2 and the fixture 3.

[0100] Step 4: After the front frame 4 and the body 1 are assembled by connecting them with fastening bolts using their own mounting points, the fixture 3 with the split headlights 2 is moved and fixed to the fixture 3. Specifically, the positioning round pin 311 is engaged with the square hole 41 on one side of the front frame 4, and the positioning diamond pin 312 is engaged with the square hole 41 on the other side of the front frame 4.

[0101] Continue pushing the fixture 3 forward until the second positioning plate 3141 and the first positioning plate 313 on the fixture 3 contact the corresponding mounting surface 42 and mounting plane 43 on the front frame 4, respectively. At this time, operate the valve island 33 on the fixture 3, and the first clamping device 314 and the second clamping device 318 will start working; specifically:

[0102] The first cylinder 3142 on the first clamping device 314 extends and retracts, driving the first clamping rod 3143 to clamp the back of the front frame 4. The second cylinder 3182 on the second clamping device 318 extends and retracts, driving the second clamping rod 3183 to clamp the back of the front frame 4. At this time, the connection between the fixture 3 and the front frame 4 is such that there is a positioning point at the front and a clamping point at the rear, thus achieving a stable connection between the positioning front frame 4 and the fixture 3.

[0103] Step 5: Use fastening tools to fix the split headlight 2 and the vehicle body 1; specifically: the split headlight 2 is fastened to the upper headlight bracket 12 and the lower headlight bracket 11 through the X-direction mounting hole 21 respectively, and the split headlight 2 is fastened to the side headlight bracket 13 through the Y-direction fixing surface 22.

[0104] Step six: drive the valve island 33 connected to each cylinder on the drive fixture 3, thereby controlling the retraction of the extension ends of the third cylinder 3192, the fourth cylinder 3202 and the fifth cylinder 3212, thereby achieving the separation of the split headlight 2 from the fixture 3; then control the retraction of the extension ends of the first cylinder 3142 and the second cylinder 3182, thereby achieving the separation of the front frame 4 from the fixture 3.

[0105] Step 7: Remove fixture 3, and then complete the installation of the front bumper 5 and the front frame 4. Specifically: First, align the positioning pin 51 on the front bumper 5 with the positioning square hole 41 on the front frame 4, and then gently push it by hand to ensure that the positioning pin 51 on the front bumper 5 enters the square hole of the front frame 4; the flange 54 of the front bumper 5 cooperates with the anti-detachment guide bracket 23 and assembly guide 24 on the split headlight 2, and then gently tap the outer shell of the front bumper 5, and fix the mounting surface 42, mounting nut surface 44, and second mounting nut surface 45 of the front frame 4 to the first fixing surface 52, the second fixing surface 53, and the fixing surface 55 of the front bumper 5 respectively by bolts; thereby realizing the size control of the split headlight 2 and the front bumper 5.

[0106] Example 2

[0107] A split headlight and front bumper size control structure mainly consists of a vehicle body 1, a split headlight 2, a mounting bracket 3, a front frame 4, a front bumper 5, and an adjustable nut 6. The front frame 4 is mounted on the vehicle body 1 by fastening bolts, and the two form a process assembly.

[0108] The installation of the front-end frame 3 onto the vehicle body 1 must be completed before the installation of the split headlights 2 onto the vehicle body 1. The order of installation of the front-end frame 3 and the positioning of the split headlights 2 onto the fixture 3 is not critical; it can be determined according to the actual process layout. This embodiment describes the process with the front-end frame 3 installed onto the vehicle body 1 first as an example:

[0109] First, install the front frame 3 onto the vehicle body 1, and install the adjustable nut onto the X-direction mounting hole 21 of the split headlight 2. Then, position the split headlight 2 onto the positioning unit of the fixture 3, ensuring that the positioning components fit snugly and that the first guide block 315 and the split headlight 2 do not interfere with each other. Next, operate the valve island 33 on the fixture 3 to drive the third clamping device 319 to work, so that the split headlight 2 remains stable on the fixture 3. Operate the fixture 3 and use the moving mechanism 34 to move within the space. Simultaneously align the round positioning pin 311 and the positioning diamond pin 312 of the fixture 3 fixing components with the positioning square hole 41 on the front frame 4, and align the first positioning plate 313 on the fixture 3 with the mounting surface 42 and the mounting plane 43 on the front frame 4. After positioning, operate the valve island 33 on the fixture 3 to achieve clamping. Then, using fixing bolts, the X-direction mounting hole 21 and Y-direction fixing surface 22 on the split headlight 2 are fixedly connected to the lower headlight bracket 11, upper headlight bracket 12, and side headlight bracket 13 on the vehicle body 1. Next, the valve island 33 is operated to open the first clamping device 314 and the third clamping device 319 on the fixture 3, moving the fixture 3 to detach it from the vehicle body. Then, the front bumper 5 is installed. The square positioning pin 51 of the front bumper 5 is aligned with the positioning square hole 41 on the front frame 4, the first fixing surface 52 and the second fixing surface 53 on the front bumper 5 are aligned with the mounting surface 42 and the mounting nut surface 44 on the front frame 4, the side of the front bumper 5 is aligned with the area of ​​the headlight side bracket 13 on the vehicle body 1, and finally, the fixing surface 55 of the front bumper 5 is aligned with the front frame 4, thus completing the assembly of the front bumper 5. This effectively ensures the dimensional control of the front bumper 5 and the split headlight 2 using the fixture.

[0110] In use, the positioning round pin 311 is engaged with the positioning square hole 41 on one side of the front frame 4, and the positioning diamond pin 312 is engaged with the positioning square hole 41 on the other side of the front frame 4; different positioning plates are engaged with the corresponding mounting surface 42 and mounting plane 43 on the front frame 4 to achieve positioning between the front frame 4 and the fixture 3.

[0111] The front frame 4 is provided with a positioning square hole 41 for positioning the fixture 3 and the front bumper 5, and restricting the fixture 3 and the front bumper 5 in the Y and Z directions.

[0112] The front frame 4 is provided with a mounting surface 42 with a nut for positioning the fixture 3 and the front bumper 5, and restricting the upper X-direction of the fixture 3 and the front bumper 5.

[0113] The front frame 4 has a mounting surface 43 for restricting the lower X-direction of the fixture 3. The front frame 4 also has a mounting nut surface 44 for fixing the middle X-direction position of the front bumper 5. A second mounting nut surface 45 is also provided on the front frame 4 for fixing the lower X-direction position of the front bumper 5. The front frame 4 first positions the fixture 3, completes this process, removes the fixture 3, and then positions the front bumper 5.

[0114] The vehicle body 1 is equipped with a lower headlight bracket 11, an upper headlight bracket 12, and a side headlight bracket 13. The brackets are equipped with projection weld nuts for fixing the split headlights 2.

[0115] The split headlight 2 has two X-direction mounting holes 21 and a Y-direction fixing surface 22 on one side. An adjustable nut 6 is mounted on the split headlight 2. Specifically, the adjustable nut 6 is mounted on the X-direction mounting holes 21 of the split headlight 2. The adjustable nut 6 consists of an inner nut 61 and an outer nut 62, which are first fitted together by their internal threads to form the adjustable nut 6. The inner nut 61 has exposed threads on its upper part, which fit into the X-direction mounting holes 21 on the split headlight 2 to form a single unit.

[0116] The split headlight 2 is equipped with an anti-detachment guide bracket 23 to fix the partial flange of the front bumper 5, preventing the partial flange of the front bumper 5 from sagging due to its shape. The split headlight 2 is also equipped with an assembly guide 24 to facilitate the assembly of the partial side of the front bumper 5 and improve the ease of assembly.

[0117] The fixture 3 includes a frame 31, an electric wrench 32, a valve island 33, and a moving structure 34. The electric wrench 32 and the valve island 33 are fixed to the frame 31 by fastening bolts. The moving structure 34 and the frame 33 are connected by a steering and fixing structure to form a single movable fixture. The moving structure 34 is fixed to the upper side of the production line by sliding guide rails, allowing for movement in a certain spatial position and ensuring convenient operation of the fixture 3.

[0118] The frame 31 is equipped with a positioning and fixing component and a positioning headlight component. The positioning and fixing component on the frame 31 includes a positioning device and a clamping device. The positioning device includes a positioning round pin 311, a positioning prismatic pin 312, and a positioning plate. Each of these positioning component units is connected to the frame 31 using multiple sets of connecting blocks, limit pins, fixing bolts, and adjusting shims, forming a single unit with the frame 31. This structure also features adjustable precision. The cylinder on the first clamping device 314 is connected to the valve island 33 via an air circuit, enabling the operation of the valve island 33 to control the normal opening and closing of the first clamping device 314, ensuring convenient operation of the fixture.

[0119] Furthermore, the positioning round pin 311, the positioning prism pin 312, and the positioning plate are the positioning points after the fixture 3 is in place. After being in place, they contact the positioning points on the front frame 4 respectively, ensuring that the relative position of the fixture 3 is fixed after it is in place.

[0120] The locating pin 311 is a circular locating pin unit that controls the Y and Z directions and mates with the locating square hole 41 on one side of the front frame 4. The locating rhomboid pin 312 is a rhomboid locating pin unit that controls the Z direction and mates with the locating square hole 41 on the other side of the front frame 4. The locating plate is a locating surface that controls the X direction and mates with the mounting surface 42 and mounting plane 43 on the front frame 4 to ensure the relative positional relationship with the front frame 4 after it is in place.

[0121] The first clamping device 314 is a clamping unit after the fixture 3 is in place. By operating the valve island 33, it can clamp and release the front frame 4, ensuring the stability and convenience of operation after positioning.

[0122] The positioning headlight component on frame 31 also has a positioning device and a clamping device. The cylinder on the third clamping device 319 and the valve island 33 are connected by an air circuit to realize the operation of the valve island 33, control the normal opening and closing of the third clamping device 319, and ensure the convenience of fixture operation.

[0123] Furthermore, the first guide block 315, the first irregularly shaped guide positioning block 317, and the first positioning block 316 are the positioning surfaces of the split headlight 2 on the frame 31, used to ensure that the relative position of the split headlight 2 on the frame 31 is stable and accurate.

[0124] Furthermore, the first irregularly shaped guide positioning block 317 and the first positioning block 316 are both provided with positioning surfaces for Z-axis positioning of the split headlight 2, which restrict the Z-axis translation and X-axis rotation of the split headlight 2 on the frame 31.

[0125] The first irregularly shaped guide positioning block 317 is also provided with a Y-direction positioning surface for the split headlight 2, which restricts the Y-direction translation of the split headlight 2 on the frame 31.

[0126] The first irregular-shaped guide positioning block 317, the first positioning block 316, and the second irregular-shaped guide positioning block 3217 are all provided with positioning surfaces for X-axis positioning of the split headlight 2. There are three such surfaces, which restrict the X-axis translation, X-axis rotation, and Z-axis rotation of the split headlight 2 on the frame 31. This achieves the fixation of the position of the split headlight 2 on the frame 31.

[0127] The second clamping device 319 is a clamping unit for the split headlight 2 after it is installed on the frame 31. By operating the valve island 33, the split headlight 2 can be clamped and released, ensuring the stability and convenience of operation after positioning.

[0128] The front bumper 5 has a positioning pin 51, which engages with the positioning square hole 41 on the front frame 4 to position the overall Z-axis and Y-axis spatial positions of the front bumper 5. The front bumper 5 has fixing points, which are secured to the front frame 4 with bolts to ensure the stability of the front bumper 5 after assembly. The front bumper 5 has side flanges 54, which engage with the split headlights 2 to provide localized stabilization and reinforcement. The lower part of the front bumper 5 has a fixing surface 55, which is connected to the mounting nut surface 45 on the front frame 4 with bolts, providing both lower reinforcement and allowing for adjustment of the lower X-axis spatial position.

[0129] A method for controlling the dimensions of a split headlight and front bumper grille includes the following:

[0130] First, position the split headlight 2 on the fixture 3. The split headlight 2 is equipped with an adjustable nut 6. After the front frame 4 and the body 1 are assembled, move the fixture 3, on which the split headlight 2 is mounted, and secure it to the front frame 4 through the fixing points on the fixture 3. Then, use fastening tools to secure the split headlight 2 and the body 1 through the fixing points. After the operation is completed, remove the fixture 3 and then install the front bumper 5, thereby achieving size control of the split headlight 2 and the front bumper 5.

[0131] As described above, the positioning point of the split headlight 2 on the fixture 3 is the gap surface positioning, thereby controlling the gap surface of the split headlight 2 to be in a spatially stable position. The surface difference control method of the split headlight 2 achieves dimensional compensation with the vehicle body assembly error by adding an adjustable nut 6. The important positioning points of the fixture 3 and the front bumper 5 are both set on the front frame 4, and the positioning points are consistent, thereby realizing the spatial assembly position of the front bumper 5. Therefore, by using the fixture 3 to position the split headlight 2 and then assembling the front bumper 5, the perfect matching dimensions between the front bumper 5 and the split headlight 2 can be effectively guaranteed.

[0132] By using assembly tools to break up the dimensional chain links, deviations in vehicle body dimensions can be eliminated.

[0133] The fixture 3 is equipped with a fixed electric wrench, which can enable assembly in blind spots.

[0134] The fixing points of fixture 3 and front face shield 5 are set in the same way to ensure consistency after assembly.

[0135] The split headlights on fixture 3 are positioned using a gap surface, which further reduces post-installation deviation.

[0136] The split headlight 2 is equipped with an adjustable nut 6, which can realize automatic compensation for X-direction deviation and further reduce the manufacturing deviation of the vehicle body.

[0137] The split headlight 2 is equipped with a guide device and an anti-detachment device to ensure smooth assembly of the front bumper.

[0138] The amount of clearance between the body mounting holes and the through holes of the split headlights is ≥2mm, preferably 3mm, thereby further reducing manufacturing deviations.

[0139] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the scope of protection of the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, any person skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention within the scope of the technology disclosed in the present invention. These simple modifications are all within the scope of protection of the present invention.

[0140] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0141] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A split-type headlight and front bumper size control structure, characterized in that, The device includes a vehicle body (1), split headlights (2), fixtures (3), a front frame (4), and a front bumper cover (5); wherein the front frame (4) is fixed to the front anti-collision beam of the vehicle body (1), the front bumper cover (5) is fixed to the front frame (4), and the split headlights (2) are respectively installed in the openings on both sides of the front bumper cover (5), and the split headlights (2) are fixed to the vehicle body (1); the fixtures (3) include a frame (31), a front frame positioning mechanism, and a split headlight positioning mechanism; wherein the front frame (31) is provided with a front frame positioning mechanism at the front end, and a first split headlight positioning mechanism and a second split headlight positioning mechanism are respectively provided at the lower end and the outer side of the front end; The frame (31) is a rectangular frame. The front frame positioning mechanism includes a positioning round pin (311), a positioning prismatic pin (312), a first positioning plate (313), a first clamping device (314) and a second clamping device (318) for clamping the front frame (4). Connecting frames (322) are fixed on both sides of the upper crossbar of the rectangular frame. The first clamping device (314) is fixed above the connecting frame (322) through the second positioning plate (3141). The positioning prismatic pin (312) is fixed on one side of the connecting frame. At the lower front end of the frame (322), a positioning pin (311) is fixed to the lower front end of the connecting frame (322) on the other side; a second clamping device (318) is provided on both sides of the lower crossbar of the frame (31), and a first positioning plate (313) is fixed on the crossbar of the frame (31) inside the second clamping device (318); a first split headlight positioning mechanism is fixed at the end of the crossbar of the frame (31) outside the second clamping device (318), and a second split headlight positioning mechanism is provided on the outside of the vertical bar of the frame (31).

2. The split-type headlight and front bumper size control structure according to claim 1, characterized in that, The first clamping device (314) includes a second positioning plate (3141), a first cylinder (3142), a first clamping rod (3143), and a first cylinder connecting plate (3144). The second positioning plate (3141) is fixed above the connecting frame (322), the first cylinder (3142) is fixed on the first cylinder connecting plate (3144), the second positioning plate (3141) and the first cylinder connecting plate (3144) are connected together by a pin, and the first clamping rod (3143) is connected to the second positioning plate (3141) by a pin. The first clamping rod (3143) is aligned with the telescopic end of the first cylinder (3142) above and with the second positioning plate (3141) below.

3. The split-type headlight and front bumper size control structure according to claim 2, characterized in that, The second positioning plate (3141) includes a horizontal plate and a vertical plate fixed together, wherein the top of the vertical plate extends to the front end to form an extension plate, the horizontal plate is fixed on the connecting frame (322), the rear end of the extension plate and the first cylinder connecting plate (3144) are connected together by a pin, and the first clamping rod (3143) is connected to the front end of the extension plate by a pin.

4. The split-type headlight and front bumper size control structure according to claim 1, characterized in that, The second clamping device (318) includes a second cylinder (3182), a second clamping rod (3183), and a second cylinder connecting plate (3184). The second cylinder (3182) is fixed on the second cylinder connecting plate (3184). The first connecting plate (323) is fixed on both sides of the crossbar below the frame (31). The bottom of the first connecting plate (323) extends forward to form a connecting short plate (3181). The rear end of the connecting short plate (3181) and the second cylinder connecting plate (3184) are connected together by a pin. The second clamping rod (3183) is connected to the front end of the connecting short plate (3181) by a pin. The lower part of the second clamping rod (3183) is aligned with the telescopic end of the second cylinder (3182), and the upper part is aligned with the first connecting plate (323).

5. The split-type headlight and front bumper size control structure according to claim 1, characterized in that, The first split headlight positioning mechanism includes a first guide block (315), a first positioning block (316), a first irregularly shaped guide positioning block (317), and a third clamping device (319) for clamping the split headlight (2). The first positioning block (316) is fixed to the end of the crossbar below the frame (31) by a mounting plate. The first irregularly shaped guide positioning block (317) is provided on the crossbar below the frame (31) inside the first positioning block (316). The first guide block (315) is connected to the mounting plate below the first positioning block (316) by an extension plate. The third clamping device (319) is provided on the mounting plate between the first guide block (315) and the first irregularly shaped guide positioning block (317).

6. The split-type headlight and front bumper size control structure according to claim 5, characterized in that, The third clamping device (319) for clamping the split headlight (2) includes a third cylinder (3192), a third clamping rod (3193), and a third cylinder connecting plate (3194). The third cylinder (3192) is fixed on the third cylinder connecting plate (3194). A second connecting plate (3191) is provided on the mounting plate between the first guide block (315) and the first irregular guide positioning block (317). A first connecting block (324) is provided at the front end of the second connecting plate (3191). The middle part of the first connecting block (324) and the third cylinder connecting plate (3194) are connected together by a pin. The third clamping rod (3193) is connected to the front end of the first connecting block (324) by a pin. The left side of the third clamping rod (3193) is aligned with the second connecting plate (3191), and the right side is aligned with the telescopic end of the third cylinder (3192).

7. The split-type headlight and front bumper size control structure according to claim 1, characterized in that, The second split headlight positioning mechanism includes a bracket, an upper positioning mechanism and a lower positioning mechanism, wherein the bracket is fixed on the outside of the vertical bar of the frame (31), and the upper positioning mechanism and the lower positioning mechanism are respectively located at the upper and lower ends in front of the bracket; 8. The split-type headlight and front bumper size control structure according to claim 1, characterized in that, The upper positioning mechanism includes a second irregularly shaped guide positioning block (3217), a fourth clamping device (320) for clamping the split headlight (2) and a third positioning plate (3201), wherein the third positioning plate (3201) is fixed above the bracket, the fourth clamping device (320) is provided above the third positioning plate (3201) and the second irregularly shaped guide positioning block (3217) is provided below it.

9. The split-type headlight and front bumper size control structure according to claim 1, characterized in that, The lower positioning mechanism includes a third irregular guide positioning block (3161), a fifth clamping device (321) for clamping the split headlight (2), a fourth positioning plate (3211), and a second connecting block (3215). The fourth positioning plate (3211) is fixed below the bracket, and the second connecting block (3215) is fixed on it. The front end of the second connecting block (3215) is fixed with the third irregular guide positioning block (3161). The fifth clamping device (321) is connected to the second connecting block (3215) through a connecting rod (3216).

10. The split-type headlight and front bumper size control structure according to claim 8, characterized in that, The fourth clamping device (320) includes a fourth cylinder (3202), a fourth clamping rod (3203), and a fourth cylinder connecting plate (3204). The fourth cylinder (3202) is fixed on the fourth cylinder connecting plate (3204). The middle part of the crossbar above the third positioning plate (3201) and the fourth cylinder connecting plate (3204) are connected together by a pin. The fourth clamping rod (3203) is connected to the front end of the crossbar above the third positioning plate (3201) by a pin. The fourth clamping rod (3203) is aligned with the telescopic end of the fourth cylinder (3202) above and with the second irregular guide positioning block (3217) below.

11. The split-type headlight and front bumper size control structure according to claim 1, characterized in that, The fifth clamping device (321) includes a fifth cylinder (3212), a fifth clamping rod (3213), and a fifth cylinder connecting plate (3214). The fifth cylinder (3212) is fixed on the fifth cylinder connecting plate (3214). The top of the connecting rod (3216) is fixed on the outer side of the second connecting block (3215). The fifth cylinder connecting plate (3214) and the connecting rod (3216) are connected together by a pin. The fifth clamping rod (3213) is connected to the bottom of the connecting rod (3216) by a pin. The top of the fifth clamping rod (3213) is aligned with the front end face of the connecting rod (3216), and the bottom is aligned with the telescopic end of the fifth cylinder (3212).

12. The split-type headlight and front bumper size control structure according to claim 1, characterized in that, The front frame (4) has a mounting surface (42) with a nut, a positioning square hole (41) and a mounting nut surface (44) on both sides from top to bottom, and a second mounting nut surface (45) is provided at the bottom of the front frame (4). The front face shield (5) has a first fixing surface (52), a positioning pin (51), and a second fixing surface (53) arranged sequentially from top to bottom on both sides inside. The inner ring of the opening on both sides of the front face shield (5) is provided with a flange (54). The front face shield (5) has a fixing surface (55) at the bottom. The positioning pin (51) of the front face shield (5) is positioned in the front frame (4) through the positioning square hole (41). The first fixing surface (52) and the second fixing surface (53) are respectively fastened to the mounting surface (42) and the mounting nut surface (44) on the front frame (4). The fixing surface (55) is fastened to the second mounting nut surface (45) on the front frame (4).

13. The split headlight and front bumper size control structure according to claim 1, characterized in that, The vehicle body (1) is provided with a headlight lower bracket (11), a headlight upper bracket (12) and a headlight side bracket (13); the outer ring of the split headlight (2) is provided with an X-direction mounting hole (21) and a Y-direction fixing surface (22), and the bottom of the split headlight (2) is provided with an anti-drop guide bracket (23). The outer ring of the lamp cover of the split headlight (2) is provided with multiple assembly guides (24). The anti-drop guide bracket (23) and the assembly guides (24) are both snapped onto the flange (54); the split headlight (2) is fastened to the headlight upper bracket (12) and the headlight lower bracket (11) through the X-direction mounting hole (21) respectively, and the split headlight (2) is fastened to the headlight side bracket (13) through the Y-direction fixing surface (22).

14. The split-type headlight and front bumper size control structure according to claim 1, characterized in that, An adjustable nut (6) is installed inside the X-direction mounting hole (21).

15. The split-type headlight and front bumper size control structure according to claim 13, characterized in that, The split headlights (2) are fastened to the upper headlight bracket (12) and the lower headlight bracket (11) respectively through the adjustable nuts (6) in the X-direction mounting holes (21).

16. The split headlight and front bumper size control structure according to claim 14, characterized in that, The adjustable nut (6) consists of an inner nut (61) and an outer nut (62), wherein the inner nut (61) and the outer nut (62) are fitted together by their own internal threads, and the upper part of the inner nut (61) is provided with exposed threads for threaded connection into the X-direction mounting hole (21) on the split headlight (2).

17. The split-type headlight and front bumper size control structure according to claim 12, characterized in that, The inner sides of the connecting frame (322) of the positioning round pin (311) and the positioning prism pin (312) are respectively provided with positioning plates for cooperating with the mounting surface (42) and the mounting plane (43) on the front end frame (4).

18. A method for controlling the dimensions of a split headlight and a front bumper using the split headlight and front bumper size control structure according to any one of claims 1-7, characterized in that, Includes the following: Step 1: First, install the split headlight (2) onto the fixture (3) to position the split headlight (2), specifically as follows: Using the first guide block (315) in conjunction with the bottom and side of the anti-detachment guide bracket (23) of the split headlight (2), the initial installation position of the lower side of the split headlight (2) is positioned; using the third irregular guide positioning block (3161) in conjunction with the contour surface of the other side of the lower part of the split headlight (2); using the outer plane of the first irregular guide positioning block (317) in conjunction with the right contour of the split headlight (2); and then using the second irregular guide positioning block (3217) in conjunction with the upper contour of the split headlight (2); the initial spatial placement of the split headlight (2) is achieved. Step 2: Hold the split headlight (2) and move it within the positioning space of the fixture (3) to ensure that the assembly guide (24) at the bottom of the split headlight (2) and the first positioning block (316) and the third irregular guide positioning block (3161) on the fixture (3) are in contact with each other in the Z direction; ensure that the right contour surface of the split headlight (2) and the left Y direction of the first irregular guide positioning block (317) are in contact with each other in the Y direction; ensure that the front shell of the split headlight (2) and the first positioning block (316), the second irregular guide positioning block (3217) and the third irregular guide positioning block (3161) are in contact with each other in the X direction; achieve precise positioning of the split headlight (2) on the fixture (3); Step 3: The third cylinder (3192), the fourth cylinder (3202), and the fifth cylinder (3212) start working simultaneously, so that the extension end of the third cylinder (3192) drives the third clamping rod (3193) to clamp the back housing of the split headlight (2), the extension end of the fourth cylinder (3202) drives the fourth clamping rod (3203) to clamp the back housing of the split headlight (2), and the extension end of the fifth cylinder (3212) drives the fifth clamping rod (3213) to clamp the back housing of the split headlight (2); Step 4: After the front frame (4) and the body (1) are assembled by fastening bolts using their own mounting points, move the fixture (3) on which the split headlights (2) are installed and fix the front frame (4) on the fixture (3). Specifically, the positioning round pin (311) is connected to the square hole (41) on one side of the front frame (4), and the positioning diamond pin (312) is connected to the square hole (41) on the other side of the front frame (4). Continue pushing the fixture (3) forward until the second positioning plate (3141) and the first positioning plate (313) on the fixture (3) come into contact with the corresponding mounting surface (42) and mounting plane (43) on the front frame (4), respectively. At this time, the first clamping device (314) and the second clamping device (318) start working; specifically: The first cylinder (3142) on the first clamping device (314) extends and retracts, driving the first clamping rod (3143) to clamp the back of the front frame (4), and the second cylinder (3182) on the second clamping device (318) extends and retracts, driving the second clamping rod (3183) to clamp the back of the front frame (4); thus achieving a stable connection between the positioning front frame (4) and the fixture (3); Step 5: Fix the split headlight (2) and the vehicle body (1); specifically: the split headlight (2) is fastened to the upper headlight bracket (12) and the lower headlight bracket (11) through the X-direction mounting hole (21) respectively, and the split headlight (2) is fastened to the side headlight bracket (13) through the Y-direction fixing surface (22); Step six: Control the retraction ends of the third cylinder (3192), the fourth cylinder (3202) and the fifth cylinder (3212) to retract, thereby achieving the separation of the split headlight (2) from the fixture (3); then control the retraction ends of the first cylinder (3142) and the second cylinder (3182) to retract, thereby achieving the separation of the front frame (4) from the fixture (3); Step 7: Remove the fixture (3) and then complete the installation of the front bumper (5) and the front frame (4). Specifically, first align the positioning pin (51) on the front bumper (5) with the positioning square hole (41) on the front frame (4), and then gently push it with your hand to ensure that the positioning pin (51) on the front bumper (5) enters the square hole of the front frame (4). The flange (54) of the front bumper (5) cooperates with the anti-drop guide bracket (23) and assembly guide (24) on the split headlight (2). The mounting surface (42), mounting nut surface (44), and second mounting nut surface (45) of the front frame (4) are fixed to the first fixing surface (52) and the second fixing surface (53) and fixing surface (55) of the front bumper (5) respectively by bolts. Thus, the size control of the split headlight (2) and the front bumper (5) is realized.

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