Automobile front grille module testing fixture

Abstract

The utility model belongs to the technical field of automobile part detection tools, and particularly discloses an automobile front grille module detection tool which comprises a supporting frame, a front grille module and a positioning assembly. The supporting frame is detachably connected with a vehicle body through the positioning assemblies, and the positioning assemblies are detachably arranged on the surface of the supporting frame through fasteners. The front grille module is arranged above the supporting frame through a connecting piece and is close to the vehicle body machine cover. Through accurate cooperation of the supporting frame and the positioning assembly, the front grating module is accurately assembled on the vehicle body in the white vehicle body manufacturing stage, so that the profile height difference and the contour gap value between the front grating and the adjacent hood cover are conveniently measured through the front grating module. Potential assembly problems can be found and solved in time in the early manufacturing stage, the appearance quality and the assembly precision of a final product are effectively improved, and the cost and the risk of later adjustment are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile part testing fixture, more specifically, relate to a kind of automobile front grille module testing fixture. BACKGROUND

[0002] In the field of automobile manufacturing, the body-in-white as the metal skeleton of the whole vehicle, its assembly precision directly determines the appearance quality of the vehicle, the matching degree of parts and the performance of the whole vehicle. The body-in-white is assembled by hundreds of sheet metal parts through stamping, welding, riveting and other processes, involving more than 3000 connection points and thousands of processes, and the dimensional error accumulation effect in the manufacturing process is significant, resulting in the control of gap difference becoming an industry problem. Especially in the appearance sensitive area (such as the door and the side wall, the hood cover and the fender), the small deviation of the gap difference will directly affect the perception of the vehicle quality by consumers, and even cause functional problems such as abnormal sound and sealing performance.

[0003] At present, the body-in-white precision control mainly focuses on design optimization, manufacturing process control and detection technology, in which: in the design stage, the structure of stamping parts is usually optimized, the matching of assembly lap joint surface is optimized, and strict geometric dimension and tolerance specifications are formulated to reduce theoretical error; in the manufacturing stage, measures such as improving the precision of stamping single piece, optimizing the welding sequence to reduce deformation, using high-precision clamp, etc. are usually adopted to suppress error propagation; in the detection stage, three-coordinate measurement, laser scanning or automatic optical detection are usually adopted to realize rapid measurement and feedback of gap difference.

[0004] Although the above method can adjust the gap difference of the door and the side wall, the hood cover and the fender and other parts in the body-in-white manufacturing stage, so as to ensure the assembly effect of these parts, with the increasing emphasis on the streamlining of the design and the functional integration of the automobile, the assembly process of the front grille of the automobile has been delayed to the completion of the assembly stage, and at this time the body-in-white has been finalized, and its contour precision has been fixed. If the body-in-white cannot effectively control the precision of the assembly position of the front grille in the early manufacturing process, it may cause problems such as uneven gap and inconsistent gap between the front grille and other parts of the body-in-white in the assembly stage. These problems not only affect the appearance quality of the whole vehicle, but also may cause assembly difficulty, increase rework cost, and even affect the sealing performance and safety of the vehicle. UTILITY MODEL CONTENTS

[0005] In view of the above defects or improvement needs of the prior art, the utility model provides a kind of automobile front grille module gauge, the front grille module is accurately assembled to the vehicle body main body of white car body manufacturing stage by the accurate cooperation of the support frame and positioning assembly, so that the profile height difference between front grille and adjacent hood cover and the profile gap value are conveniently measured by the front grille module, so that potential assembly problems are found and solved in time in early manufacturing stage, thereby effectively improving the appearance quality and assembly accuracy of final product, enhancing the market competitiveness of product, and reducing the cost and risk of later adjustment.

[0006] In order to achieve the above object, the utility model provides a kind of automobile front grille module gauge, comprising: support frame, front grille module and positioning assembly, wherein:

[0007] The support frame is detachably connected with the vehicle body main body through the positioning assembly, and the positioning assembly is detachably arranged on the surface of the support frame through fasteners;

[0008] The front grille module is arranged above the support frame and adjacent to the hood cover of the vehicle body main body through the connecting piece.

[0009] Further, the support frame includes a support skeleton and a support side wing; the support skeleton is a rectangular frame, and a plurality of support rods are arranged inside the support skeleton; the two support side wings are connected with the vertical edges of the two sides of the support skeleton respectively and form a stable triangular structure, and the support side wings are deflected from the vertical edges to the vehicle body main body.

[0010] Further, a plurality of connecting blocks for connecting the positioning assembly are uniformly arranged on the surfaces of the support skeleton and the support side wing, and the connecting blocks are provided with threaded holes on the surfaces.

[0011] Further, the support skeleton and the support side wing are both made of aluminum alloy material and are uniformly provided with a plurality of weight-reducing holes on the surfaces.

[0012] The vertical edges of the support skeleton away from the vehicle body main body are each provided with a hand-held groove.

[0013] Further, the positioning assembly includes a first positioning block, a second positioning block, a third positioning block and a fourth positioning block; the first positioning block, the second positioning block and the fourth positioning block are arranged on the side of the vertical edge of the support skeleton close to the vehicle body main body, and the number of each is two and they are arranged in mirror image symmetry with the vertical axis of the support skeleton; the number of the third positioning block is two, one end of each third positioning block is detachably connected with the fourth positioning block through a fastener; the first positioning block, the second positioning block and the third positioning block are respectively connected with the corresponding positioning surface of the vehicle body main body through a first positioning pin, a second positioning pin and a third positioning pin.

[0014] Further, the fourth positioning block comprises: a first positioning plate, a second positioning plate, a third positioning plate, a fourth positioning plate, a centering scale, a first limiting block, a fourth pin shaft and a second limiting block; the second positioning plate and the third positioning plate are adjacent and are arranged on the upper end of the first positioning plate; the other end of the second positioning plate is connected to the side of the vehicle body main body facing the vertical edge of the support framework; the third positioning plate is square in shape, and a T-shaped groove and a square hole in communication with the T-shaped groove are arranged on the axis of the third positioning block; the fourth positioning plate is L-shaped, one end of which is connected to the third positioning block, and the other end is provided with a protrusion and is slidably connected to the third positioning plate through the T-shaped groove; the centering scale is arranged on the surface of the third positioning plate and is adjacent to the T-shaped groove; the first limiting block is square in shape, and is arranged on one side of the third positioning plate and is provided with a cross-shaped groove corresponding to the T-shaped groove on one side; one end of the fourth pin shaft passes through the cross-shaped groove, the first limiting block and the square hole in sequence and is rotatably connected to the fourth positioning plate, and a limiting ring adapted to the cross-shaped groove is arranged on the outer side of the shaft rod of the fourth pin shaft; the second limiting block is detachably arranged in the square hole and is clamped to the shaft rod of the fourth pin shaft.

[0015] Further, the surfaces of the first positioning block, the second positioning block, the third positioning block and the fourth positioning block are uniformly provided with a plurality of lightening holes.

[0016] Further, the first positioning block and the second positioning block each consist of two square plates and an inclined plate connecting the two square plates, the two square plates respectively abutting the vertical edge of the support framework and the corresponding positioning surface of the vehicle body main body, and the included angle between the inclined plate and the two square plates is greater than 90°.

[0017] Further, the positioning assembly further comprises: a fifth positioning block, a sixth positioning block, a seventh positioning block, an eighth positioning block and a ninth positioning block arranged on the edges of the support frame through the connecting block; the number of the fifth positioning block, the sixth positioning block, the seventh positioning block, the eighth positioning block and the ninth positioning block is two, and they are mirror symmetric with respect to the vertical axis of the support framework.

[0018] Further, the front grille module comprises: a first sub-module, a second sub-module and a third sub-module; the first sub-module, the second sub-module and the third sub-module are adjacent in sequence, and two first sub-modules and two second sub-modules are mirror symmetric with respect to the third sub-module;

[0019] The surfaces of the first sub-module, the second sub-module and the third sub-module are provided with automobile coordinate system scale lines;

[0020] The front grille module is made of 6061 aluminum alloy material.

[0021] Overall, the above technical scheme conceived by the utility model compared with the prior art can achieve the following beneficial effects:

[0022] (1) The module gauge of the utility model is accurately assembled to the vehicle body main body in the white vehicle body manufacturing stage through the accurate cooperation of the support frame and the positioning assembly, so that the profile height difference and the contour gap value between the front grille and the adjacent hood cover are conveniently measured through the front grille module, potential assembly problems are discovered and solved in time in the early manufacturing stage, the appearance quality and the assembly precision of the final product are effectively improved, the market competitiveness of the product is enhanced, and the cost and the risk of the later adjustment are reduced.

[0023] (2) The module gauge of the utility model is prepared by an aluminum alloy material, the support skeleton and the support side wing are provided with a plurality of lightening holes on the surface, and a hand holding groove is arranged on the vertical edge of the support skeleton, so that the weight of the support frame is effectively reduced without reducing the overall strength of the support frame, the material cost and the transportation cost are reduced, the operator is facilitated to carry and install, and the work efficiency is improved.

[0024] (3) The module gauge of the utility model is provided with two fourth pin shafts, the readings of the two centering scales are the same, the fourth pin shaft is limited by the second limiting block, so that the first positioning block, the second positioning block and the third positioning block are aligned with the corresponding positioning holes on the vehicle body main body, the support frame is accurately fixed to the vehicle body main body through the first positioning pin, the second positioning pin and the third positioning pin, and the accuracy and the work efficiency of the gap surface difference measurement are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structure schematic view of the module gauge of the utility model embodiment assembled to the vehicle body main body.

[0026] Figure 2 It is a structure schematic view of the module gauge of the utility model embodiment.

[0027] Figure 3 It is a structure schematic view of the first positioning block and the first positioning pin assembled.

[0028] Figure 4 It is a structure schematic view of the second positioning block and the second positioning pin assembled.

[0029] Figure 5 It is a structure schematic view of the third positioning block and the fourth positioning block assembled.

[0030] Figure 6The top view of the fourth positioning block of the embodiment of the present application;

[0031] Figure 7 The structural schematic view of the embodiment A of the present application;

[0032] Figure 8 The sectional view of the third positioning plate of the embodiment of the present application;

[0033] Figure 9 The structural schematic view of the fourth positioning plate of the embodiment of the present application;

[0034] Figure 10 The front view of the second limiting block of the embodiment of the present application.

[0035] In all the drawings, same reference signs represent same technical features, specifically: 1-support frame, 11-support framework, 111-support rod, 112-hand holding groove, 12-supporting side wing, 13-connecting square block, 2-front grating module, 21-first sub-module, 22-second sub-module, 23-third sub-module, 3-positioning assembly, 31-first positioning block, 311-first positioning pin, 32-second positioning block, 321-second positioning pin, 33-third positioning block, 331-third positioning pin, 34-fourth positioning block, 341-first positioning plate, 342-second positioning plate, 343-third positioning plate, 3431-T-shaped groove, 3432-square hole, 344-fourth positioning plate, 3441-centering recess, 345-centering scale, 346-first limiting block, 3461-cross-shaped groove, 347-fourth pin shaft, 3471-limiting ring, 348-second limiting block, 35-fifth positioning block, 36-sixth positioning block, 37-seventh positioning block, 38-eighth positioning block, 39-ninth positioning block, 4-vehicle body main body. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0037] As Figures 1 to 10As shown, the embodiment of the utility model provides a kind of automobile front grille module gauge, comprising: support frame 1, front grille module 2 and positioning assembly 3;The support frame 1 is detachably connected with vehicle body main body 4 by the positioning assembly 3, and the positioning assembly 3 is detachably arranged on the surface of the support frame 1 by fastener respectively;The front grille module 2 is arranged on the support frame 1 by connecting piece and is adjacent to the vehicle body main body hood cover.In use, by the accurate cooperation of the support frame 1 and positioning assembly 3, the front grille module 2 is accurately assembled to the vehicle body main body 4 in the white vehicle body manufacturing stage, so that the profile height difference between the front grille and adjacent hood cover and the profile gap value are conveniently measured by the front grille module 2, so that potential assembly problems are found and solved in time in early manufacturing stage, and then the appearance quality and assembly accuracy of final product are effectively improved, the market competitiveness of product is enhanced, and the cost and risk of later adjustment are reduced.

[0038] Further, as shown in Figure 1 And Figure 2 The support frame 1 includes: support skeleton 11 and support side wing 12;The support skeleton 11 is rectangular frame and its inside is equipped with several support rods 111;Two support side wings 12 are connected with the vertical edge of the two sides of the support skeleton 11 respectively and form stable triangular structure, and the support side wing 12 is deflected to the vehicle body main body 4 with the vertical edge.It can be understood that, by the above design, the carrying capacity of the support frame 1 can be enhanced, to ensure the accurate positioning and stable support of the front grille module 2 during assembly, and at the same time, the support side wing 12 is deflected to the vehicle body main body 4 with the vertical edge, so that the support frame 1 is more closely fitted with the vehicle body main body 4, can better adapt to the contour shape of the vehicle body main body 4, improve the assembly accuracy and stability, and reduce assembly error.

[0039] In alternative embodiment, the surface of the support skeleton 11 and the support side wing 12 is uniformly provided with several connecting blocks 13 for connecting the positioning assembly 3, and the connecting block 13 is provided with a threaded hole on the surface, so as to facilitate the quick installation and disassembly of the positioning assembly 3, and improve the assembly efficiency.

[0040] In alternative embodiment, the support skeleton 11 and the support side wing 12 are made of aluminum alloy material and are uniformly provided with several weight reduction holes on the surface;The vertical edge of the support skeleton 11 is provided with a hand-held groove 112 away from the vehicle body main body 4 side.It can be understood that, by the above design, the weight of the support frame 1 can be effectively reduced without reducing the overall strength of the support frame 1, the material cost and transportation cost are reduced, the operator is facilitated to carry and install, and the work efficiency is improved.

[0041] Further, as shown in Figure 1 And Figure 2As shown, the front grille module 2 comprises a first sub-module 21, a second sub-module 22 and a third sub-module 23; the first sub-module 21, the second sub-module 22 and the third sub-module 23 are adjacent in sequence, and two first sub-modules 21 and two second sub-modules 22 are mirror-symmetric with the third sub-module 23; the first sub-module 21, the second sub-module 22 and the third sub-module 23 are provided with automobile coordinate system scale lines on the surface, and are provided with scale marks for detecting the gap of 5mm and the profile surface of 0mm, so as to facilitate the operator to intuitively use the detection equipment to detect the profile height difference and the profile gap value of the front grille and the adjacent hood cover when detecting the whole vehicle state.

[0042] In an optional embodiment, the front grille module 2 is made of 6061 aluminum alloy material, and the CNC (Computer Numerical Control) precision machining is used to process high-precision detection reference surface and positioning surface positioning hole, and then the surface oxidation treatment is used to improve the surface hardening and corrosion resistance, so as to significantly improve the size stability of the front grille module 2.

[0043] Further, as shown in the Figures 1 to 10 The positioning assembly 3 comprises a first positioning block 31, a second positioning block 32, a third positioning block 33 and a fourth positioning block 34; the first positioning block 31, the second positioning block 32 and the fourth positioning block 34 are arranged on the side of the vertical edge of the support framework 11 close to the vehicle body 4, and the number of each is two and mirror-symmetrically arranged along the vertical axis of the support framework 11; the number of the third positioning block 33 is two, and each end of the third positioning block 33 is detachably connected with the fourth positioning block 34 through a fastener; the first positioning block 31, the second positioning block 32 and the third positioning block 33 are connected with the corresponding positioning surface of the vehicle body 4 through the first positioning pin 311, the second positioning pin 321 and the third positioning pin 331 respectively.

[0044] In an optional embodiment, the fourth positioning block 34 comprises: a first positioning plate 341, a second positioning plate 342, a third positioning plate 343, a fourth positioning plate 344, a centering scale 345, a first limiting block 346, a fourth pin shaft 347, and a second limiting block 348; the second positioning plate 342 and the third positioning plate 343 are adjacent and both are arranged on the upper end of the first positioning plate 341; the other end of the second positioning plate 342 is connected with the vertical side of the support framework 11 facing the vehicle body 4; the third positioning plate 343 is square in shape, and a T-shaped groove 3431 and a square hole 3432 in communication with the T-shaped groove 3431 are arranged on the axis along the direction of the third positioning block 33; the fourth positioning plate 344 is L-shaped in whole, one end of which is connected with the third positioning block 33, and the other end is provided with a protrusion and is slidably connected with the third positioning plate 343 through the T-shaped groove 3431; the centering scale 345 is arranged on the surface of the third positioning plate 343 and is adjacent to the T-shaped groove 3431; the first limiting block 346 is square in whole, which is arranged on one side of the third positioning plate 343 and is provided with a cross-shaped groove 3461 corresponding to the T-shaped groove 3431 on one side thereof; one end of the fourth pin shaft 347 passes through the cross-shaped groove 3461, the first limiting block 346, and the square hole 3432 in sequence and is rotatably connected with the fourth positioning plate 344, and a limiting ring 3471 adapted to the cross-shaped groove 3461 is sleeved on the outer side of the shaft rod of the fourth pin shaft 347; the second limiting block 348 is detachably arranged in the square hole 3432 and is clamped with the fourth pin shaft 347. It can be understood that, in the use process, the readings of the two centering scales 345 are made the same by rotating the two fourth pin shafts 347, and the fourth pin shafts 347 are limited by inserting the second limiting block 348, so as to ensure that the first positioning block 31, the second positioning block 32, and the third positioning block 33 are aligned with the corresponding positioning holes on the vehicle body 4, and the support frame 1 is accurately fixed to the vehicle body 4 through the first positioning pin 311, the second positioning pin 321, and the third positioning pin 331, thereby further improving the accuracy and work efficiency of the gap difference measurement.

[0045] In an optional embodiment, the surfaces of the first positioning block 31, the second positioning block 32, the third positioning block 33, and the fourth positioning block 34 are uniformly provided with a plurality of lightening holes, so as to further reduce the self-weight of the module gauge and the operation difficulty.

[0046] In the alternative embodiment, the first positioning block 31 and the second positioning block 32 are each composed of two square plates and an inclined plate connecting the two square plates, the two square plates respectively adhere to the vertical edges of the support framework 11 and the corresponding positioning surface of the vehicle body main body 4, and the included angle between the inclined plate and the two square plates is greater than 90°. It can be understood that, through the above design, and the design that the third positioning block 33 is connected with the vehicle body main body 4 through the fourth positioning block 34, the precise positioning of the support frame 1 in multiple directions is realized, and the support frame 1 and the vehicle body main body 4 have sufficient cavities, thereby providing operation space for subsequent maintenance and adjustment.

[0047] In the alternative embodiment, the protruding block surface of the fourth positioning plate 344 is provided with a centering groove 3441, and the centering scale 345 is read through the groove 3441 to fine-tune the support frame 1.

[0048] In the alternative embodiment, the positioning assembly 3 further comprises: a fifth positioning block 35, a sixth positioning block 36, a seventh positioning block 37, an eighth positioning block 38 and a ninth positioning block 39 provided on the edge of the support frame 1 through the connecting block 13; the number of the fifth positioning block 35, the sixth positioning block 36, the seventh positioning block 37, the eighth positioning block 38 and the ninth positioning block 39 is two, and they are mirror-symmetric with the vertical axis of the support framework 11. It can be understood that, through the above design, the fifth positioning block 35, the sixth positioning block 36, the seventh positioning block 37, the eighth positioning block 38 and the ninth positioning block 39 are used on the vehicle body main body 18 to check the positioning of other parts, which can significantly improve the adaptability of the module gauge.

[0049] In the alternative embodiment, the second limiting block 348 is connected with the support frame 1 through the upper end bolt hole, the fastening bolt and the steel wire rope (not shown), so as to avoid loss and falling when the fourth pin shaft 347 is not limited.

[0050] The working principle of the utility model is: the front grille module 2 is simulated by the small-size front grille module 2 to facilitate the operator to conveniently and labor-savingly assemble the front grille module 2 through the support frame 1; at the same time, the position of the third positioning block 33 is further fine-tuned through the fourth positioning block 34, and the support frame 1 is accurately fixed to the vehicle body main body 4 through the first positioning block 31, the first positioning pin 311, the second positioning block 32, the second positioning pin 321, the third positioning block 33 and the third positioning pin 331, so as to ensure the accuracy of the profile height difference and the contour gap value measurement between the front grille module 2 and the adjacent hood cover.

[0051] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0052] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0053] In the present application, the term "comprise", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the elements defined by the statement "comprise" do not exclude the presence of other identical elements in the process, method, article or equipment including the elements.

[0054] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; those skilled in the art can easily understand that the above description is only the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automobile front grille module gauge, characterized by, Include: Support frame (1), front grille module (2) and positioning assembly (3), wherein: The support frame (1) is detachably connected with the vehicle body main body (4) through the positioning assembly (3), and the positioning assembly (3) is detachably arranged on the surface of the support frame (1) through fasteners; The front grille module (2) is arranged above the support frame (1) and adjacent to the hood cover of the vehicle body main body (4).

2. The modular gauge of claim 1, wherein, The support frame (1) comprises a support skeleton (11) and a support wing (12); the support skeleton (11) is a rectangular frame, and a plurality of support rods (111) are arranged in the support skeleton (11); two support wings (12) are respectively connected with the vertical edges of the two sides of the support skeleton (11) and form a stable triangular structure, and the support wing (12) is deflected to the vehicle body main body (4) with the vertical edge.

3. The modular gauge of claim 2, wherein, The surfaces of the support skeleton (11) and the support wing (12) are uniformly provided with a plurality of connection blocks (13) for connecting the positioning assembly (3), and the surfaces of the connection blocks (13) are provided with threaded holes.

4. The modular gauge of claim 3, wherein, The support skeleton (11) and the support wing (12) are both made of aluminum alloy material and are uniformly provided with a plurality of weight reduction holes on the surfaces; The vertical edges of the support skeleton (11) away from the vehicle body main body (4) are provided with hand-held grooves (112).

5. The modular gauge of any one of claims 2-4, wherein, The positioning assembly (3) comprises a first positioning block (31), a second positioning block (32), a third positioning block (33) and a fourth positioning block (34); the first positioning block (31), the second positioning block (32) and the fourth positioning block (34) are arranged on the vertical edges of the support skeleton (11) close to the vehicle body main body (4), and the number of each is two and arranged in mirror image symmetry with the vertical axis of the support skeleton (11); the number of the third positioning block (33) is two, one end of each third positioning block (33) is detachably connected with the fourth positioning block (34) through a fastener; the first positioning block (31), the second positioning block (32) and the third positioning block (33) are connected with the corresponding positioning surfaces of the vehicle body main body (4) through first positioning pins (311), second positioning pins (321) and third positioning pins (331) respectively.

6. The modular gauge of claim 5, wherein, The fourth positioning block (34) comprises a first positioning plate (341), a second positioning plate (342), a third positioning plate (343), a fourth positioning plate (344), a centering scale (345), a first limiting block (346), a fourth pin shaft (347) and a second limiting block (348); the second positioning plate (342) and the third positioning plate (343) are adjacent and are arranged on the upper end of the first positioning plate (341); the other end of the second positioning plate (342) is connected to the vertical side of the support framework (11) towards the side of the vehicle body (4); the third positioning plate (343) is square in shape, and a T-shaped groove (3431) and a square hole (3432) in communication with the T-shaped groove (3431) are arranged on the axis of the third positioning block (33); the fourth positioning plate (344) is L-shaped in whole, one end of which is connected to the third positioning block (33), and the other end is provided with a protrusion and is slidably connected to the third positioning plate (343) through the T-shaped groove (3431); the centering scale (345) is arranged on the surface of the third positioning plate (343) and is adjacent to the T-shaped groove (3431); the first limiting block (346) is square in whole, is arranged on one side of the third positioning plate (343), and one side thereof is provided with a cross-shaped groove (3461) corresponding to the T-shaped groove (3431); one end of the fourth pin shaft (347) passes through the cross-shaped groove (3461), the first limiting block (346) and the square hole (3432) in sequence and is rotatably connected to the fourth positioning plate (344), and a limiting ring (3471) matched with the cross-shaped groove (3461) is arranged on the outer side of the shaft rod of the fourth pin shaft (347); the second limiting block (348) is detachably arranged in the square hole (3432) and is clamped with the shaft rod of the fourth pin shaft (347).

7. The module tester of claim 5, wherein, The surfaces of the first positioning block (31), the second positioning block (32), the third positioning block (33) and the fourth positioning block (34) are uniformly provided with a plurality of lightening holes.

8. The modular gauge of claim 5, wherein, The first positioning block (31) and the second positioning block (32) each comprise two square plates and an inclined plate connecting the two square plates, the two square plates are respectively attached to the vertical side of the support framework (11) and the corresponding positioning surface of the vehicle body (4), and the included angle between the inclined plate and the two square plates is greater than 90°.

9. The modular gauge of claim 3 or 4, wherein, The positioning assembly (3) further comprises a fifth positioning block (35), a sixth positioning block (36), a seventh positioning block (37), an eighth positioning block (38) and a ninth positioning block (39) arranged on the edge of the support frame (1) through the connecting block (13); the number of the fifth positioning block (35), the sixth positioning block (36), the seventh positioning block (37), the eighth positioning block (38) and the ninth positioning block (39) is two, and they are mirror-symmetric with respect to the vertical axis of the support framework (11).

10. The modular gauge of any one of claims 1-4, wherein, The front grille module (2) comprises a first sub-module (21), a second sub-module (22) and a third sub-module (23); the first sub-module (21), the second sub-module (22) and the third sub-module (23) are adjacent in sequence, and two first sub-modules (21) and two second sub-modules (22) are mirror-symmetric with the third sub-module (23); The first sub-module (21), the second sub-module (22) and the third sub-module (23) are provided with automobile coordinate system scale lines on the surfaces; The front grille module (2) is prepared from 6061 aluminum alloy material.

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