A gap measuring mechanism and method for irregular surfaces of automotive sheet metal parts.

Abstract

This invention discloses a gap measuring mechanism and method for irregular surfaces of automotive sheet metal parts, relating to the field of measuring irregular surfaces of automotive sheet metal parts. It includes a base platform and a profile component. A placement rack is fixedly installed on the upper side of the base platform, and the profile component is installed on the base platform of the automotive sheet metal part's inspection surface. Stops are respectively provided on both sides of the placement rack. A pressure fixing mechanism is fixedly installed on the base platform beside the placement rack, including a first pressure fixing component, a second pressure fixing component, a third pressure fixing component, and a top pressure component. The first pressure fixing component is fixedly installed on the base platform of the automotive sheet metal part's inspection surface, and the top pressure component, the second pressure fixing component, and the third pressure fixing component are respectively fixedly installed on the base platform on the other side of the placement rack, thus achieving fixed installation of the automotive sheet metal part. The inspection mechanism is installed on the base platform of the automotive sheet metal part's inspection surface and includes a profile component and an adjusting component. The adjusting component is used to adjust the position of the profile component, and the profile component measures the distance between holes on the sheet metal part or the connection positions between parts.

Description

Technical Field

[0001] This invention relates to the field of measuring irregular surfaces of automotive sheet metal parts, and more specifically, to a gap measuring mechanism and method for irregular surfaces of automotive sheet metal parts. Background Technology

[0002] Inspection fixtures are specialized inspection and measurement tools designed and manufactured according to the characteristics and testing requirements of different products. They play an indispensable role in quality control during sample approval and mass production. On the parts production line, inspection fixtures enable online inspection of parts. This requires accurately mounting the parts onto the fixture, then visually inspecting the parts' surfaces and perimeters using measuring instruments such as dial gauges or calipers. Inspection pins or visual inspection can also be used to visually inspect holes of different types and the connection positions between parts, thus ensuring rapid assessment of the parts' quality status on the production line. The measurement accuracy of the inspection fixture depends on the precise measurement of the dimensions between the template block on the fixture and the sheet metal being measured.

[0003] When performing precise measurements on large or complex automotive sheet metal parts, it is necessary to design inspection fixtures. For large sheet metal parts, the required inspection fixtures will also be huge. When the inspection fixture is large and heavy, the inspection process will be cumbersome, increasing the difficulty of operation. Most importantly, it is not easy to operate during measurement, and the measurement accuracy cannot be guaranteed. When performing precise measurements on complex automotive sheet metal parts, the design of the inspection fixture is also relatively complex, the processing difficulty is high, the processing accuracy cannot be guaranteed, and it is not adaptable, so it can only be used for this specific sheet metal part. Therefore, in summary, relevant innovative designs for the equipment are required. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a gap measuring mechanism and method for irregular surfaces of automotive sheet metal parts, making the gap measurement process for irregular surfaces of automotive sheet metal parts more efficient and convenient, and improving the measurement effect.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a gap measuring mechanism for irregular surfaces of automotive sheet metal parts, comprising a base and a profile part, and further comprising:

[0006] The placement rack is fixedly installed on the upper side of the base platform. The profiling part is installed on the base platform of the automotive sheet metal inspection surface. There are stops on both sides of the placement rack.

[0007] The pressure fixing mechanism is fixedly installed on the base platform next to the placement rack. It includes a first pressure fixing component, a second pressure fixing component, a third pressure fixing component, and a top pressure component. The first pressure fixing component is fixedly installed on the base platform of the automotive sheet metal inspection surface. The top pressure component, the second pressure fixing component, and the third pressure fixing component are respectively fixedly installed on the base platform on the other side of the placement rack to achieve the fixed installation of the automotive sheet metal parts.

[0008] The testing mechanism is mounted on a base platform on the testing surface of automotive sheet metal parts and includes a profile part and an adjustment part. The adjustment part is used to adjust the position of the profile part, and the profile part measures the distance between holes on the sheet metal parts or the connection positions between parts.

[0009] Preferably, the first pressure-regulating component includes a first clamping frame and a first handle. The first handle is mounted on the first clamping frame, and the first clamping frame is fixedly mounted on the base platform at both ends of the placement frame and on the same side as the stop block.

[0010] Preferably, the second pressure-regulating component includes a second pressure frame, a second handle, and a second pressure pad. The second handle is mounted on the second pressure frame, and the second pressure pad is fixedly mounted on one end of the second pressure frame near the automotive sheet metal part. The second pressure frame is fixedly mounted on the base platform and is located in the middle of the base platform.

[0011] Preferably, the third pressure-fixing component includes a third handle, a third clamping frame, and a third clamping pad. The third handle is mounted on the third clamping frame, the third clamping pad is fixedly mounted on the end of the third clamping frame near the automotive sheet metal part, and the third clamping frame is fixedly mounted on the base platform at both ends of the placement frame, and on the same side as the stop block.

[0012] Preferably, the top pressure member includes a top pressure block and a top pressure seat. The top pressure seat is fixedly installed on the base platform, and the top pressure seats are staggered between the first pressure member, the second pressure member, and the third pressure member. The top pressure block is provided on the top pressure seat.

[0013] Preferably, protective pads are installed on the placement racks directly below the first, second, and third pressure-regulating components.

[0014] Preferably, the first clamping frame has a through hole on the placement frame directly below the end of the automotive sheet metal part, and the corresponding position of the automotive sheet metal part also has a through hole, and the positioning pin can be installed in the through holes of the placement frame and the automotive sheet metal part.

[0015] Preferably, the adjusting component includes a support base and a first locking block. At least one support base is mounted on the base platform between the third pressure fixing component. The first locking block is rotatably mounted on the support base. A screw ring is mounted on the first locking block. A third mounting hole is provided on the upper side of the support base, and the screw ring can be installed in the third mounting hole.

[0016] Preferably, the first locking block and the second locking block are installed together. The first locking block and the second locking block are respectively provided with a first mounting hole, and a first fastening bolt is installed inside the first mounting hole. A contour block is installed at the other end of the second locking block. The contour block and the second locking block are respectively provided with a second mounting hole, and a second fastening bolt is installed inside the second mounting hole.

[0017] Preferably, the profile component includes a profile block and a detection pin. The profile block is provided with a plurality of detection holes, and a detection pin is provided inside the detection holes. The detection pin is installed inside the detection holes, and a positioning block is provided on the upper side of the detection pin, and the positioning block is located on the upper side of the profile block.

[0018] Preferably, the method for measuring the gap of irregular surfaces of automotive sheet metal parts as described above includes the following steps:

[0019] S1: The automotive sheet metal parts are fixed by the first pressure fixing component, the second pressure fixing component, the third pressure fixing component and the top pressure component;

[0020] S2: Install the locating pin on the automotive sheet metal parts and the mounting rack;

[0021] S3: Press the template down onto the inspection surface and insert the inspection pin into the inspection hole;

[0022] S4: Measure the gap between the positioning block and the upper side of the detection block.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The gap measuring mechanism and method for irregular surfaces of automotive sheet metal parts according to the present invention utilizes the cooperation of a first pressure-fixing component, a second pressure-fixing component, a third pressure-fixing component, and a top pressure component. The first pressure-fixing component is fixedly installed on the base platform of the inspection surface of the automotive sheet metal part, and the top pressure component, the second pressure-fixing component, and the third pressure-fixing component are respectively fixedly installed on the base platform on the other side of the placement frame, thereby achieving the fixed installation of the automotive sheet metal part.

[0025] 2. The present invention provides a gap measuring mechanism and method for irregular surfaces of automotive sheet metal parts, which utilizes a contouring component and an adjusting component in combination. The adjusting component is used to adjust the position of the contouring component, and the contouring component measures the distance between holes on the sheet metal part or between the connection positions of parts. Attached Figure Description

[0026] Figure 1 A front-view perspective three-dimensional schematic diagram of a gap measuring mechanism for irregular surfaces of automotive sheet metal parts provided by the present invention;

[0027] Figure 2 Provided by the present invention Figure 1 A structural schematic diagram of the mid-rear view;

[0028] Figure 3 Provided by the present invention Figure 1 Mid-top view of the structure;

[0029] Figure 4 Provided by the present invention Figure 1 Enlarged structural diagram at point A;

[0030] Figure 5 Provided by the present invention Figure 2 Enlarged structural diagram at point B;

[0031] Figure 6 Provided by the present invention Figure 2 Schematic diagram of the structure of relevant parts in the first pressure-regulating component;

[0032] Figure 7 Provided by the present invention Figure 2 Schematic diagram of the structure of relevant parts in the second pressure-regulating component;

[0033] Figure 8 Provided by the present invention Figure 2 Schematic diagram of the structure of relevant parts in the third pressure-regulating component;

[0034] Figure 9 Provided by the present invention Figure 1 Structural diagrams of relevant parts in the adjustment and contouring components;

[0035] Figure 10 Provided by the present invention Figure 9 A schematic diagram of the structure of the second locking block;

[0036] Figure 11 Provided by the present invention Figure 9 Schematic diagram of the structure of the central support base;

[0037] 1. Base platform; 2. Adjustable component; 3. Profile component; 4. First pressure fixing component; 5. Second pressure fixing component; 6. Positioning pin; 7. Top pressure component; 8. Automotive sheet metal part; 9. Placement rack; 10. Third pressure fixing component; 11. Third handle; 12. Third clamping frame; 13. Third clamping pad; 14. Second clamping frame; 15. Second handle; 16. Second clamping pad; 17. Support base; 18. First locking block; 19. Tightening ring; 20. First mounting hole; 21. First fastening bolt; 22. Second fastening bolt; 23. Detection pin; 24. Positioning block; 25. Profile block; 26. Second locking block; 27. Second mounting hole; 28. Third mounting hole; 30. Protective pad; 31. Stop block; 32. First clamping frame; 33. First handle; 34. Top pressure block; 35. Detection hole; 36. Top pressure seat. Detailed Implementation

[0038] Reference Figures 1-11The present invention provides a further description of an embodiment of a gap measuring mechanism and method for irregular surfaces of automotive sheet metal parts.

[0039] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8 A gap measuring mechanism for irregular surfaces of automotive sheet metal parts includes a base platform 1 and a profile part 3, and also includes a placement rack 9. The placement rack 9 is fixedly installed on the upper side of the base platform 1, and the profile part 3 is installed on the base platform 1 on the inspection surface of the automotive sheet metal part 8. Stop blocks 31 are respectively provided on both sides of the placement rack 9.

[0040] The pressure fixing mechanism is fixedly installed on the base platform 1 on the side of the placement rack 9, including a first pressure fixing component 4, a second pressure fixing component 5, a third pressure fixing component 10 and a top pressure component 7. The first pressure fixing component 4 is fixedly installed on the base platform 1 on the inspection surface of the automotive sheet metal part 8, and the top pressure component 7, the second pressure fixing component 5 and the third pressure fixing component 10 are respectively fixedly installed on the base platform 1 on the other side of the placement rack 9 to achieve the fixed installation of the automotive sheet metal part 8.

[0041] The first pressure-regulating component 4 includes a first clamping frame 32 and a first handle 33. The first handle 33 is mounted on the first clamping frame 32. The first clamping frame 32 is fixedly mounted on the base platform 1 at both ends of the placement frame 9 and is on the same side as the stop block 31.

[0042] The second pressure-fixing component 5 includes a second pressure frame 14, a second handle 15, and a second pressure pad 16. The second handle 15 is mounted on the second pressure frame 14, and the second pressure pad 16 is fixedly mounted on one end of the second pressure frame 14 near the automotive sheet metal part 8. The second pressure frame 14 is fixedly mounted on the base platform 1 and is located in the middle of the base platform 1.

[0043] The third pressure-fixing component 10 includes a third handle 11, a third pressure frame 12, and a third pressure pad 13. The third handle 11 is mounted on the third pressure frame 12, and the third pressure pad 13 is fixedly mounted on one end of the third pressure frame 12 near the automotive sheet metal part 8. The third pressure frame 12 is fixedly mounted on the base platform 1 at both ends of the placement frame 9 and is on the same side as the stop block 31.

[0044] The top pressure component 7 includes a top pressure block 34 and a top pressure seat 36. The top pressure seat 36 is fixedly installed on the base platform 1, and the top pressure seats 36 are staggered between the first pressure fixing component 4 and the second pressure fixing component 5 and between the third pressure fixing component 10. The top pressure block 34 is provided on the top pressure seat 36.

[0045] Protective pads 30 are respectively installed on the placement rack 9 directly below the first pressure fixing component 4, the second pressure fixing component 5 and the third pressure fixing component 10. The first clamping frame 32 is provided with a through hole on the placement rack 9 directly below the end of the automotive sheet metal part 8. A through hole is also provided at the corresponding position of the automotive sheet metal part 8, and the positioning pin 6 can be installed in the through hole of the placement rack 9 and the automotive sheet metal part 8.

[0046] When inspecting a relatively complex automotive sheet metal part 8, the automotive sheet metal part 8 is first placed on the placement rack 9 on the base platform 1. Then, the stops 31 at both ends of the placement rack 9 are manually adjusted. The height of the stops 31 is adjusted according to the size and thickness of the automotive sheet metal part 8 so that the automotive sheet metal part 8 is placed on the placement rack 9 between the stops 31. Then, the side of the automotive sheet metal part 8 to be inspected is fixed by multiple third pressure components 10. The fixing and installation process is as follows: the operator presses down the third handle 11, which drives the third clamping frame 12 to rotate. This causes the third clamping pad 13 at one end of the third clamping frame 12 to move downward. The third clamping pad 13 moves down and presses and fixes the automotive sheet metal part 8 below. Here, a protective pad 30 is fixedly installed on the upper side of the placement rack 9 below the automotive sheet metal part 8 to prevent the automotive sheet metal part 8 from directly contacting the rigid placement rack 9 and causing deformation and surface scratches.

[0047] After the third pressure-fixing component 10 presses and fixes the inspection surface of the automotive sheet metal part 8, the first pressure-fixing component 4 and the second pressure-fixing component 5 press and fix the other side of the automotive sheet metal part 8. The first pressure-fixing component 4 presses and fixes both ends of the automotive sheet metal part 8, and the second pressure-fixing component 5 presses and fixes the automotive sheet metal part 8 in the middle position. The fixing and installation process is as follows: The operator presses down the first handle 33, causing the first handle 33 to drive the first clamping frame 32 to rotate, thereby causing one end of the first clamping frame 32 to move downward and press and fix the automotive sheet metal part 8 located below. Here, the automotive sheet metal part 8 is provided with a through hole, and the placement frame 9 is also provided with a through hole to cooperate with the positioning pin 6. The positioning pin 6 is inserted into the through hole of the placement frame 9 through the through hole, pressing and fixing the automotive sheet metal part 8 while limiting and fixing it to prevent inspection. During the process, the car sheet metal part 8 slides on the placement rack 9, resulting in unsatisfactory testing results. The operator presses down the second handle 15, causing the second handle 15 to drive the second clamping frame 14 to rotate, thereby causing the second clamping pad 16 at one end of the second clamping frame 14 to move downward. The second clamping pad 16 moves downward and presses and fixes the car sheet metal part 8 located below it. A protective pad 30 is fixedly installed on the upper side of the placement rack 9 directly below the first pressure member 4 and the second pressure member 5. The purpose is to prevent the car sheet metal part 8 from directly contacting the rigid placement rack 9, causing deformation and surface scratches. The upper side of the car sheet metal part 8 is also provided with a through hole, and the same through hole is also provided on the placement rack 9 at the same position. Then, the positioning pin 6 is installed in the through hole of the car sheet metal part 8 and the placement rack 9 to further limit and fix the car sheet metal part 8.

[0048] The final positioning and fixing of the automotive sheet metal part 8 is achieved by the top pressing member 7. The working process is as follows: the top pressing block 34 is fixedly installed on the top pressing member 7, and then the top pressing member 7 is pressed downwards. The top pressing member 7 drives the top pressing block 34 to rotate downwards, causing the top pressing block 34 to press against the automotive sheet metal part 8 on its contact side, thus pressing the automotive sheet metal part 8 firmly onto the placement frame 9. In summary, through the coordinated action of the first fixing member 4, the second fixing member 5, the third fixing member 10, and the top pressing member 7, the automotive sheet metal part 8 is fixed on the placement frame 9.

[0049] See Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 9 , Figure 10 and Figure 11 The testing mechanism is installed on the base platform 1 of the testing surface of the automotive sheet metal part 8, and includes a contouring part and an adjusting part 2. The adjusting part 2 is used to adjust the position of the contouring part 3, and the contouring part 3 measures the distance between the holes on the sheet metal part or the connection position between the parts.

[0050] The adjusting component 2 includes a support base 17 and a first locking block 18. At least one support base 17 is installed on the base platform 1 between the third pressure fixing component 10. The first locking block 18 is rotatably installed on the support base 17. A screw ring 19 is installed on the first locking block 18. A third mounting hole 28 is provided on the upper side of the support base 17, and the screw ring 19 can be installed in the third mounting hole 28.

[0051] The first locking block 18 and the second locking block 26 are installed together. The first locking block 18 and the second locking block 26 are respectively provided with a first mounting hole 20, and a first fastening bolt 21 is installed inside the first mounting hole 20. A contour block 25 is installed at the other end of the second locking block 26. The contour block 25 and the second locking block 26 are respectively provided with a second mounting hole 27, and a second fastening bolt 22 is installed inside the second mounting hole 27.

[0052] The profile part 3 includes a profile block 25 and a detection pin 23. The profile block 25 is provided with a plurality of detection holes 35, and the detection pin 23 is provided inside the detection hole 35. The detection pin 23 is installed inside the detection hole 35. A positioning block 24 is provided on the upper side of the detection pin 23, and the positioning block 24 is located on the upper side of the profile block 25.

[0053] After the automotive sheet metal part 8 is fixed, it is inspected. First, the contour block 25 and the second locking block 26 are installed. The installation process is as follows: the second fastening bolt 22 is installed in the second mounting hole 27 on the contour block 25 and the second locking block 26, so that the contour block 25 and the second locking block 26 are fixedly installed. Then, the first locking block 18 and the second locking block 26 are installed. The installation process is as follows: the first fastening bolt 21 is installed in the first mounting hole 20 at the appropriate position on the first locking block 18 and the second locking block 26, so that the first locking block 18 and the second locking block 26 are fixedly installed. The first locking block 18 is rotatably installed with the support base 17, and its initial position is in a vertical state. When inspecting, the screw ring 19 pushes the first locking block 18 to make the contour block 25 rotate downward, thereby pressing the contour block 25 down and making it close to the surface of the automotive sheet metal part 8. At this time, the pressing movement stops, and the screw ring 19 is rotated and installed in the third mounting hole 28 of the support base 17. The first locking block 18 is fixedly installed on the support base 17. When multiple positions of the automotive sheet metal part 8 need to be inspected, or when the inspection area of ​​the automotive sheet metal part 8 is large, multiple sheet metal parts can be sequentially attached to the surface of the automotive sheet metal part 8. After the contour block 25 is attached to the automotive sheet metal part 8, the positioning block 24 is fixedly installed at a suitable position on the inspection pin 23, and the distance between the positioning block 24 and the insertion end of the inspection pin 23 is the required standard inspection distance. Then, the inspection pin 23 is inserted into the inspection hole 35 on the contour block 25. The insertion end of the inspection pin 23 is equipped with a magnetic attraction device, which can make the inspection pin 23 fit tightly with the surface of the automotive sheet metal part 8 and reduce gaps. After the inspection pin 23 is inserted and fits with the surface of the automotive sheet metal part 8, the gap distance formed between the positioning block 24 and the upper surface of the contour block 25 is measured to measure the distance between the holes on the sheet metal part or the connection position between parts, so as to achieve a fast, accurate and convenient measurement effect on the automotive sheet metal part 8.

[0054] Working principle: The car sheet metal part 8 is placed on the placement rack 9 on the base platform 1. Then, the stops 31 at both ends of the placement rack 9 are manually adjusted to adjust the height of the stops 31 so that the car sheet metal part 8 is limited and placed between the stops 31. Then, multiple third pressure fixing parts 10 fix the side of the car sheet metal part 8 that needs to be inspected. After the third pressure fixing parts 10 have pressed and fixed the inspection side of the car sheet metal part 8, the other side of the car sheet metal part 8 is pressed and fixed by the first pressure fixing part 4 and the second pressure fixing part 5. The first pressure fixing part 4 presses and fixes the two ends of the car sheet metal part 8, and the second pressure fixing part 5 presses and fixes the middle position of the car sheet metal part 8. Finally, the top pressure part 7 is used to limit and fix the car sheet metal part 8.

[0055] When the automotive sheet metal part 8 is fixed, during inspection, the screw ring 19 pushes the first locking block 18 to rotate the contour block 25 downwards, thereby pressing the contour block 25 down and making it fit tightly against the surface of the automotive sheet metal part 8. At this point, the pressing motion stops, and the screw ring 19 is rotated and installed in the third mounting hole 28 of the support base 17, fixing the first locking block 18 on the support base 17. Multiple sheet metal parts can be sequentially attached to the surface of the automotive sheet metal part 8. After the contour block 25 is attached to the automotive sheet metal part 8, it is properly positioned on the inspection pin 23. The positioning block 24 is fixedly installed in the position, and the distance between the positioning block 24 and the insertion end of the detection pin 23 is the required standard detection distance. Then, the detection pin 23 is inserted into the detection hole 35 on the contour block 25. After the detection pin 23 is inserted and fits against the surface of the automotive sheet metal part 8, the gap distance formed between the positioning block 24 and the upper surface of the contour block 25 is measured to measure the distance between the holes on the sheet metal part or the connection position between parts, so as to achieve a fast, accurate and convenient measurement effect on the automotive sheet metal part 8.

[0056] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A gap measuring mechanism for irregular surfaces of automotive sheet metal parts, characterized in that: Including the base (1) and the profile part (3), it also includes: Placement rack (9) is fixedly installed on the upper side of base platform (1). The profile part (3) is installed on the base platform (1) of the inspection surface of the automotive sheet metal part (8). There are stop blocks (31) on both sides of the placement rack (9). The pressure fixing mechanism is fixedly installed on the base platform (1) on the side of the placement frame (9), including a first pressure fixing component (4), a second pressure fixing component (5), a third pressure fixing component (10) and a top pressure component (7). The first pressure fixing component (4) is fixedly installed on the base platform (1) on the inspection surface of the automotive sheet metal part (8), and the top pressure component (7), the second pressure fixing component (5) and the third pressure fixing component (10) are respectively fixedly installed on the base platform (1) on the other side of the placement frame (9) to realize the fixed installation of the automotive sheet metal part (8); The testing mechanism is installed on the base platform (1) of the testing surface of the automotive sheet metal part (8), and includes a contouring part and an adjusting part (2). The adjusting part (2) is used to adjust the position of the contouring part (3), and the contouring part (3) measures the distance between the holes on the sheet metal part or the connection position between the parts. The adjusting component (2) includes a support base (17) and a first locking block (18). The first locking block (18) is rotatably mounted on the support base (17). A screw ring (19) is mounted on the first locking block (18). A third mounting hole (28) is provided on the upper side of the support base (17), and the screw ring (19) can be installed in the third mounting hole (28). The profile part (3) includes a profile block (25) and a detection pin (23). The profile block (25) is provided with a detection hole (35). The detection pin (23) is installed inside the detection hole (35). A positioning block (24) is provided on the upper side of the detection pin (23), and the positioning block (24) is located on the upper side of the profile block (25).

2. The gap measuring mechanism for irregular surfaces of automotive sheet metal parts according to claim 1, characterized in that: The first pressure-regulating component (4) includes a first clamping frame (32) and a first handle (33). The first handle (33) is mounted on the first clamping frame (32). The first clamping frame (32) is fixedly mounted on the base platform (1) at both ends of the placement frame (9) and is on the same side as the stop block (31).

3. The gap measuring mechanism for irregular surfaces of automotive sheet metal parts according to claim 1, characterized in that: The second pressure-fixing component (5) includes a second pressure frame (14), a second handle (15), and a second pressure pad (16). The second handle (15) is mounted on the second pressure frame (14), and the second pressure pad (16) is fixedly mounted on one end of the second pressure frame (14) near the automotive sheet metal part (8). The second pressure frame (14) is fixedly mounted on the base platform (1) and is located in the middle of the base platform (1).

4. A gap measuring mechanism for irregular surfaces of automotive sheet metal parts according to claim 1, characterized in that: The third pressure-fixing component (10) includes a third handle (11), a third pressure frame (12), and a third pressure pad (13). The third handle (11) is mounted on the third pressure frame (12), and the third pressure pad (13) is fixedly mounted on one end of the third pressure frame (12) near the automotive sheet metal part (8). The third pressure frame (12) is fixedly mounted on the base platform (1) at both ends of the placement frame (9) and on the same side as the stop block (31).

5. The gap measuring mechanism for irregular surfaces of automotive sheet metal parts according to claim 1, characterized in that: The top pressure member (7) includes a top pressure block (34) and a top pressure seat (36). The top pressure seat (36) is fixedly installed on the base platform (1), and the top pressure seats (36) are staggered between the first pressure member (4) and the second pressure member (5) and between the third pressure member (10). The top pressure block (34) is provided with the top pressure seat (36).

6. The gap measuring mechanism for irregular surfaces of automotive sheet metal parts according to claim 2, characterized in that: Protective pads (30) are installed on the placement racks (9) directly below the first pressure-regulating component (4), the second pressure-regulating component (5), and the third pressure-regulating component (10).

7. The gap measuring mechanism for irregular surfaces of automotive sheet metal parts according to claim 2, characterized in that: The first clamping frame (32) has a through hole on the placement frame (9) directly below the end of the car sheet metal part (8), and the car sheet metal part (8) also has a through hole at the corresponding position, and the positioning pin (6) can be installed in the through hole of the placement frame (9) and the car sheet metal part (8).

8. The gap measuring mechanism for irregular surfaces of automotive sheet metal parts according to claim 1, characterized in that: The first locking block (18) and the second locking block (26) are installed together. The first locking block (18) and the second locking block (26) are respectively provided with a first mounting hole (20), and a first fastening bolt (21) is installed inside the first mounting hole (20). A contour block (25) is installed at the other end of the second locking block (26). The contour block (25) and the second locking block (26) are respectively provided with a second mounting hole (27), and a second fastening bolt (22) is installed inside the second mounting hole (27).

9. A method for measuring the gap of irregular surfaces of automotive sheet metal parts, based on the gap measuring mechanism for irregular surfaces of automotive sheet metal parts according to any one of claims 1-8, characterized in that, Includes the following steps: S1: The automotive sheet metal parts (8) are fixed by the first pressure fixing part (4), the second pressure fixing part (5), the third pressure fixing part (10) and the top pressure part (7); S2: Install the locating pin (6) on the automotive sheet metal part (8) and the mounting bracket (9); S3: Press the profile (3) down onto the inspection surface and insert the inspection pin (23) into the inspection hole (35); S4: Measure the gap between the positioning block (24) and the upper side of the detection block.

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