Automobile auxiliary frame opening dimension testing fixture

Abstract

The utility model discloses an automobile auxiliary frame opening dimension testing fixture, and belongs to the technical field of automobile part detection, the automobile auxiliary frame opening dimension testing fixture comprises a rack and a substrate, the rack is provided with a longitudinal slide rail group and a longitudinal power cylinder, the substrate is installed on the longitudinal slide rail group, the longitudinal power cylinder is connected with the substrate to push the substrate to move along the longitudinal slide rail, and the longitudinal slide rail group is connected with the longitudinal power cylinder. A transverse sliding seat is movably installed on the base plate, a first detection block and a second detection block are movably installed on the transverse sliding seat, the first detection block and the second detection block both extend forwards to form detection pieces, the first detection block and the second detection block are connected through a transverse power cylinder, and the maximum thrust is preset for the transverse power cylinder; the longitudinal power cylinder works to drive the detection pieces to extend into the opening structure of the to-be-detected auxiliary frame, and the transverse power cylinder works to drive the two detection pieces to expand outwards to be attached to the inner side face of the opening structure of the to-be-detected auxiliary frame. The device has the characteristics of high-precision measurement and high-efficiency detection, and can accurately measure the opening size of the auxiliary frame of the automobile.

Description

Technical Field

[0001] This application relates to the field of automotive parts testing technology, and in particular to a tool for measuring the opening dimensions of an automotive subframe. Background Technology

[0002] The automotive subframe is a crucial component of the vehicle chassis. Its primary function is to provide mounting and support for key components such as the suspension system and powertrain. It also plays a vital role in vibration and noise reduction, improving assembly efficiency, and enhancing vehicle safety and comfort. Figure 1 As shown, the subframe structure is typically a narrow U-shape, with a U-shaped opening in the middle for connection with other automotive components. Therefore, the dimensions of the subframe opening, especially the spacing of the mounting holes on both sides of the opening, affect the vehicle's assembly precision and product performance.

[0003] However, existing measurement techniques face numerous difficulties in detecting subframe opening dimensions. On one hand, commonly used measuring tools such as calipers, while simple to operate, have limitations in measuring subframe opening dimensions. Due to the complex structure of the subframe, manual measurement with calipers is easily affected by factors such as the operator's skill level and the measuring angle, leading to significant measurement errors. Furthermore, caliper measurements require frequent contact and adjustment of the measuring position, which is not only inefficient but also prone to damaging the subframe surface.

[0004] On the other hand, existing related technologies, such as the Chinese patent application "A Freely Telescopic Opening Detection Fixture" (publication number: CN209763930U), disclose a fixture comprising a fixed base with a handle mounted on it, a scale plate mounted below the fixed base, a fixed block mounted on one end of the lower surface of the scale plate, and a movable slider mounted on the other end. The slider and the scale plate are guided by a T-shaped guide groove and a T-shaped guide rail. The scale plate on both sides of the T-shaped guide groove has guide grooves arranged along the scale lines. The fixed base and the two guide grooves are respectively provided with movable guide grooves. The slider is provided with a guide rod that cooperates with the guide groove. The upper end of the guide rod is equipped with a movable ball pulley, which is guided in the movable guide groove. A spring is fixedly installed between the fixed block and the slider. Although the above-mentioned detection fixture can measure U-shaped structures, it is mainly for the outer surface and lacks sufficient accuracy for detecting the spacing of internal mounting holes.

[0005] In summary, existing measurement technologies and tools suffer from low measurement accuracy, inconvenient operation, and easy damage to products when inspecting the opening dimensions of automotive subframes, especially the spacing between mounting holes on both sides of the U-shaped opening structure. These issues make it difficult to meet the high-precision and high-efficiency inspection requirements of modern automobile manufacturing. Utility Model Content

[0006] The technical problem to be solved by this application is to provide a subframe opening size inspection tool for automobiles, which has the characteristics of high-precision measurement and high-efficiency inspection. It can accurately measure the opening size of automobile subframes, effectively reduce the risk of product damage, and adapt to the inspection needs of various subframe specifications.

[0007] The technical solution adopted in this application is as follows: a vehicle subframe opening size inspection fixture, including a frame and a base plate. The frame is provided with a longitudinal slide rail assembly and a longitudinal power cylinder. The base plate is mounted on the longitudinal slide rail assembly. The longitudinal power cylinder is connected to the base plate and pushes the base plate to move along the longitudinal slide rail. A transverse slide is movably mounted on the base plate. A first detection block and a second detection block are movably mounted on the transverse slide. Both the first and second detection blocks extend forward to produce detection elements. The first and second detection blocks are connected by the transverse power cylinder, which is preset with a maximum thrust. When the longitudinal power cylinder operates, it drives the detection elements to extend into the opening structure of the subframe to be inspected. When the transverse power cylinder operates, it drives the two detection elements to expand outward and fit against the inner side of the opening structure of the subframe to be inspected.

[0008] Compared with the prior art, the advantages of this application are as follows: First, through the precise pushing of the longitudinal and lateral power cylinders, and the fit between the test piece and the inner side of the subframe opening structure, the opening size can be measured more accurately. In particular, the detection accuracy of the distance between the mounting holes on both sides of the U-shaped opening structure is high, which effectively solves the problem of large measurement error of traditional calipers and meets the needs of automobile manufacturing for high-precision inspection.

[0009] Secondly, this application features a high degree of automation. The longitudinal power cylinder pushes the substrate along the longitudinal slide rail, allowing the inspection piece to quickly extend into the inspection area. The transverse power cylinder drives the inspection piece to expand and fit outwards, reducing the time and number of manual adjustments to the measurement position. Compared with traditional manual measuring tools, this significantly improves efficiency and is suitable for rapid inspection processes in large-scale automobile production.

[0010] Furthermore, the overall structural design is applicable to the inspection of automotive subframe opening structures of different sizes and specifications. By adjusting parameters such as the longitudinal and lateral power cylinder stroke, it can flexibly meet the inspection needs of various vehicle models and subframe structures, and has a wide range of applicability in the field of automotive parts inspection.

[0011] In some embodiments of this application, a reference ring is mounted on the outer side of the detection component. The reference ring protrudes from the detection component, and the detection component is connected to the inner side of the opening structure of the subframe to be tested through the reference ring.

[0012] By installing a protruding reference ring on the outer side of the test piece, it can effectively and directly fit against the outer periphery of the mounting hole of the split structure, avoiding interference from the structure of the subframe split structure itself on the test, thereby improving the accuracy and reliability of the test and ensuring that the measurement results more accurately reflect the split size, especially for more precise measurement of the mounting hole spacing.

[0013] In some embodiments of this application, one end of the detection element is a circular ring structure adapted to the reference ring structure, and the other end of the detection element is a rod-shaped structure connected to the first detection block or the second detection block.

[0014] One end of the detection component is a circular ring structure adapted to the reference ring structure, and the other end is a rod-shaped structure that connects to the first or second detection block. This structural design allows the detection component to fit well with the inner surface of the opening structure and facilitates connection with drive components such as power cylinders, enabling the detection component to extend, retract, and expand outwards, ensuring smooth operation of the detection process and improving detection efficiency and accuracy.

[0015] In some embodiments of this application, a transverse power cylinder is installed on the rear side of the first detection block, and the drive shaft of the transverse power cylinder is connected to the second detection block. The operation of the transverse power cylinder pushes the first detection block and the second detection block away from each other or closer to each other.

[0016] This installation and transmission method enables the synchronous and stable movement of the two detection blocks and the detection components, ensuring that the detection components can accurately fit the inner surface of the open structure during the measurement process, improving the accuracy and stability of the measurement, while simplifying the power transmission structure and reducing the complexity and cost of the equipment.

[0017] In some embodiments of this application, an electronic displacement sensor is installed on the first detection block, and a displacement feedback device that cooperates with the electronic displacement sensor is installed on the second detection block.

[0018] The displacement sensor detects the displacement of the displacement feedback component, thereby obtaining the distance between the outer sides of the two reference rings, which is the inner side dimension of the opening structure of the subframe to be tested.

[0019] In some embodiments of this application, the substrate is provided with a plurality of mounting slots, and an elastic component is installed in the mounting slot. The elastic component is movably connected to the transverse slide, and the elastic component applies an upward thrust to the transverse slide, so that there is a gap between the transverse slide and the substrate.

[0020] In other words, the transverse slide mounted on the substrate in this application is a floating component. During testing, it can be effectively adjusted according to the feedback force exerted on the test piece by the opening structure of the subframe under test, thereby allowing the test piece to better fit against the inner surface of the opening structure of the subframe under test. This improves the fit between the test piece and the inner surface of the opening structure, especially for subframes with certain installation errors, effectively improving the accuracy and reliability of testing and reducing measurement errors caused by subframe installation errors.

[0021] In the inspection of the subframe, the entire subframe is fixedly installed before testing. However, after the entire subframe is installed, it is difficult to guarantee that the opening structure of the subframe is exactly horizontal, as the position of the opening structure itself has a certain margin of error. Adopting a floating lateral slide design can effectively solve this problem.

[0022] In some embodiments of this application, the substrate is provided with four mounting slots, and four sets of elastic components are correspondingly mounted on the substrate, with the four sets of elastic components corresponding to the four corners of the transverse slide.

[0023] The arrangement of multiple sets of elastic components can more evenly support the transverse slide, ensuring the stability of the transverse slide in all directions, making it more stable during floating adjustment, avoiding problems such as tilting or jamming of the transverse slide caused by single-point support, and further improving the stability and accuracy of detection.

[0024] In some embodiments of this application, the elastic component includes a connecting rod and a spring, the spring being sleeved on the connecting rod, the bottom of the connecting rod being installed in a mounting groove, the top of the connecting rod passing through a transverse slide, and a rod cap being provided on the top of the connecting rod on the transverse slide.

[0025] This structure is simple and reliable, effectively providing elastic support while facilitating installation and maintenance. The spring buffers potential impacts during testing, protecting the testing components and extending the equipment's lifespan, while the rod cap ensures a stable connection between the connecting rod and the transverse slide, preventing detachment and guaranteeing the continuity and safety of the testing process.

[0026] Specifically, the spring can be a linear spring or a ball spring. A linear spring can provide better elastic support, while a ball spring has better elastic movement performance on a horizontal surface.

[0027] In some embodiments of this application, a gyroscope is further provided between the transverse slide and the substrate, and the gyroscope is used to detect the deflection angle of the transverse slide.

[0028] In some embodiments of this application, the longitudinal slide rail assembly includes two longitudinal slide rails, left and right, mounted on a frame. The substrate is mounted on the two longitudinal slide rails, which are perpendicular to the transverse slide block. An L-shaped limiting block is also provided on the frame, restricting the forward movement limit of the substrate. Limit position blocks are provided at both ends of the transverse slide block to limit the extreme positions of the first and second detection blocks when they move on the transverse slide block.

[0029] This limiting structure can effectively prevent the substrate and the detection block from moving beyond the predetermined range, avoiding equipment damage and detection errors, ensuring the safety and reliability of the detection process, and also helping to improve the repeatability and accuracy of the detection, ensuring that each detection can be carried out in the same or similar starting position and range.

[0030] The longitudinal slide rail and the transverse slide block are designed to allow the first and second detection blocks to be adjustable on the plane.

[0031] In this application, for ease of description, the side of the fixture closest to the subframe is referred to as the front side.

[0032] Based on common knowledge in the field, the above-described embodiments can be combined arbitrarily. Attached Figure Description

[0033] The present application will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0034] Figure 1 The vehicle subframe structure to be inspected;

[0035] Figure 2 This is a schematic diagram of the structure of this application;

[0036] Figure 3 This is a schematic diagram of the internal structure of this application;

[0037] Figure 4 This is a cross-sectional view of the elastic component in this application;

[0038] Figure 5 This is a schematic diagram of the structure on the substrate of this application.

[0039] The specific reference numerals in the attached drawings are explained as follows: 1. Frame; 2. Base plate; 3. Lateral slide; 5. Gyroscope; 6. Elastic component; 7. Lateral power cylinder; 8. Detection component; 11. Connecting rod; 12. Spring; 13. Mounting groove; 19. Rod cap; 22. First detection block; 23. Second detection block; 24. Reference ring; 25. Electronic displacement sensor; 26. Displacement feedback component; 27. Limit position stop; 28. Longitudinal slide rail; 29. ​​L-shaped limit block; 41. Subframe; 41a. Opening structure. Detailed Implementation

[0040] The present application will now be described in detail with reference to the accompanying drawings.

[0041] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0042] Automotive subframe opening dimension gauge, Example 1 as follows Figures 1 to 3 As shown: The system includes a frame 1 and a base plate 2. The frame 1 is equipped with a longitudinal slide rail assembly and a longitudinal power cylinder. The base plate 2 is mounted on the longitudinal slide rail assembly. The longitudinal power cylinder is connected to the base plate 2 and pushes the base plate 2 to move along the longitudinal slide rail 28. A transverse slide block 3 is movably mounted on the base plate 2. A first detection block 22 and a second detection block 23 are movably mounted on the transverse slide block 3. Both the first detection block 22 and the second detection block 23 extend forward to form a detection element 8. The first detection block 22 and the second detection block 23 are connected by a transverse power cylinder 7, which has a preset maximum thrust. Through the precise pushing of the longitudinal power cylinder and the transverse power cylinder 7, and the contact between the detection element 8 and the inner side of the opening structure 41a of the subframe 41, the dimensions of the opening structure 41a can be measured more accurately. In particular, the detection accuracy for the distance between the mounting holes on both sides of the U-shaped opening structure 41a is high, effectively solving the problem of large measurement errors of traditional calipers and meeting the high-precision inspection requirements of automobile manufacturing.

[0043] The longitudinal power cylinder drives the detection element 8 to extend into the opening structure 41a of the subframe 41 to be inspected. The transverse power cylinder 7 drives the two detection elements 8 to expand outward and fit against the inner side of the opening structure 41a of the subframe 41 to be inspected. The longitudinal power cylinder pushes the base plate 2 to move along the longitudinal slide rail 28, so that the detection element 8 quickly extends into the area to be inspected. The transverse power cylinder 7 drives the detection element 8 to expand outward and fit against the surface. This reduces the time and operation steps of frequent manual adjustment of the measurement position. Compared with traditional manual measuring tools, the efficiency is greatly improved, which is suitable for the rapid inspection process in large-scale automobile production.

[0044] The overall structural design of this application is applicable to the inspection of automotive subframe 41 opening structure 41a of different sizes and specifications. By adjusting parameters such as the longitudinal and lateral power cylinder stroke, it can flexibly meet the inspection needs of various vehicle models and subframe 41 structures, and has a wide range of applicability in the field of automotive parts inspection.

[0045] In this application, for ease of description, the side of the fixture closest to the subframe 41 is referred to as the front side.

[0046] Example 2, as Figures 1 to 5 As shown, a reference ring 24 is mounted on the outer side of the testing component 8. The reference ring 24 protrudes from the testing component 8, and the testing component 8 connects to the inner side of the opening structure 41a of the subframe 41 to be tested via the reference ring 24. By mounting the protruding reference ring 24 on the outer side of the testing component 8, it can effectively and directly fit against the outer periphery of the mounting hole of the opening structure 41a, avoiding interference from the structure of the opening structure 41a itself on the testing, thereby improving the accuracy and reliability of the testing, ensuring that the measurement results more accurately reflect the dimensions of the opening structure 41a, especially for more precise measurement of the mounting hole spacing.

[0047] One end of the detection element 8 is a ring-shaped structure adapted to the structure of the reference ring 24, and the other end of the detection element 8 is a rod-shaped structure connected to the first detection block 22 or the second detection block 23. This structural design allows the detection element 8 to fit well with the inner surface of the opening structure 41a and facilitates connection with driving components such as the power cylinder, enabling the detection element 8 to extend, retract, and expand outwards, ensuring smooth operation of the detection process and improving detection efficiency and accuracy.

[0048] A transverse power cylinder 7 is mounted on the rear side of the first detection block 22. The drive shaft of the transverse power cylinder 7 is connected to the second detection block 23. The operation of the transverse power cylinder 7 pushes the first detection block 22 and the second detection block 23 away from or towards each other. This installation and transmission method enables the synchronous and stable movement of the two detection blocks and the detection element 8, ensuring that the detection element 8 can accurately fit the inner surface of the opening structure 41a during the measurement process, improving the accuracy and stability of the measurement, while simplifying the power transmission structure and reducing the complexity and cost of the equipment.

[0049] An electronic displacement sensor 25 is installed on the first detection block 22, and a displacement feedback element 26 that cooperates with the electronic displacement sensor 25 is installed on the second detection block 23. The displacement sensor can obtain the distance between the outer sides of the two reference rings 24 by detecting the displacement of the displacement feedback element 26, which is the inner side dimension of the opening structure 41a of the subframe 41 to be tested.

[0050] The rest of the contents of Example 2 are the same as those of Example 1.

[0051] Example 3, as Figures 1 to 5 As shown, the substrate 2 has multiple mounting slots 13, and elastic components 6 are installed in the mounting slots 13. The elastic components 6 are movably connected to the transverse slide 3. The elastic components 6 apply an upward pushing force to the transverse slide 3, creating a gap between the transverse slide 3 and the substrate 2. That is, in this application, the transverse slide 3 mounted on the substrate 2 is a floating component. During testing, it can be adjusted according to the feedback force applied to the detection component 8 by the opening structure 41a of the subframe 41 to be tested, thereby allowing the detection component 8 to better fit against the inner side of the opening structure 41a of the subframe 41 to be tested. Improving the fit between the detection component 8 and the inner side of the opening structure 41a, especially for subframes 41 with certain installation errors, can effectively improve the accuracy and reliability of testing and reduce measurement errors caused by installation errors of the subframe 41.

[0052] During the inspection of the subframe 41, the entire subframe 41 is fixedly installed before inspection. However, after the entire subframe 41 is installed, it is difficult to guarantee that the opening structure 41a of the subframe 41 is exactly horizontal, as the position of the opening structure 41a of the subframe 41 inherently has a certain margin of error. The floating lateral slide block 3 design can effectively solve this problem.

[0053] The substrate 2 has four mounting slots 13, and four sets of elastic components 6 are correspondingly mounted on the substrate 2. The four sets of elastic components 6 correspond to the four corners of the transverse slide 3. The arrangement of multiple sets of elastic components 6 can more evenly support the transverse slide 3, ensuring the stability of the transverse slide 3 in all directions, making it more stable during floating adjustment, avoiding problems such as tilting or jamming of the transverse slide 3 caused by single-point support, and further improving the stability and accuracy of detection.

[0054] The elastic component 6 includes a connecting rod 11 and a spring 12. The spring 12 is sleeved on the connecting rod 11, the bottom of the connecting rod 11 is installed in the mounting groove 13, and the top of the connecting rod 11 passes through the transverse slide 3. A rod cap 19 is provided on the top of the connecting rod 11 and sits on the transverse slide 3. This structure is simple and reliable, effectively providing elastic support while facilitating installation and maintenance. The spring 12 can buffer the impact force that may be generated during the detection process, protecting the detection components and extending the service life of the equipment. The rod cap 19 ensures a stable connection between the connecting rod 11 and the transverse slide 3, preventing detachment and ensuring the continuity and safety of the detection process.

[0055] Specifically, the spring 12 can be a linear spring 12 or a ball spring 12. The linear spring 12 can provide better elastic support, while the ball spring 12 has better elastic movement performance on the horizontal plane.

[0056] A gyroscope 5 is also provided between the transverse slide 3 and the base plate 2. The gyroscope 5 is used to detect the deflection angle of the transverse slide 3.

[0057] The longitudinal slide rail assembly includes two longitudinal slide rails 28 mounted on the frame 1. The base plate 2 is mounted on the two longitudinal slide rails 28, which are perpendicular to the transverse slide block 3. An L-shaped limiting block 29 is also provided on the frame 1, restricting the forward movement limit of the base plate 2. Limit position stops 27 are provided at both ends of the transverse slide block 3 to limit the extreme positions of the first detection block 22 and the second detection block 23 when they move on the transverse slide block 3. This limiting structure effectively prevents the base plate 2 and the detection blocks from exceeding the predetermined range during movement, avoiding equipment damage and detection errors, ensuring the safety and reliability of the detection process, and also helping to improve the repeatability and accuracy of the detection, ensuring that each detection is performed from the same or similar starting position and range. The arrangement of the longitudinal slide rails 28 and the transverse slide block 3 allows the first detection block 22 and the second detection block 23 to be adjustable in a plane.

[0058] The other contents of Example 3 are the same as those of Example 1 or Example 2.

[0059] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A gauge for measuring the opening dimensions of an automotive subframe, characterized in that, The system includes a frame (1) and a base plate (2). The frame (1) is provided with a longitudinal slide rail (28) assembly and a longitudinal power cylinder. The base plate (2) is mounted on the longitudinal slide rail (28) assembly. The longitudinal power cylinder is connected to the base plate (2) and pushes the base plate (2) to move along the longitudinal slide rail (28). A transverse slide block (3) is movably mounted on the base plate (2). A first detection block (22) and a second detection block (23) are movably mounted on the transverse slide block (3). The first detection block (22) The second detection block (23) extends forward to produce detection elements (8). The first detection block (22) and the second detection block (23) are connected by a transverse power cylinder (7). The transverse power cylinder (7) is preset with a maximum thrust. The longitudinal power cylinder works to drive the detection element (8) to extend into the opening structure (41a) of the subframe (41) to be tested. The transverse power cylinder (7) works to drive the two detection elements (8) to expand outward and fit against the inner side of the opening structure (41a) of the subframe (41) to be tested.

2. The automotive subframe opening dimension gauge according to claim 1, characterized in that, A reference ring (24) is installed on the outer side of the test piece (8). The reference ring (24) protrudes from the test piece (8). The test piece (8) is connected to the inner side of the opening structure (41a) of the subframe (41) to be tested through the reference ring (24).

3. The automotive subframe opening dimension gauge according to claim 2, characterized in that, One end of the detection element (8) is a circular ring structure adapted to the structure of the reference ring (24), and the other end of the detection element (8) is a rod-shaped structure connected to the first detection block (22) or the second detection block (23).

4. The automotive subframe opening dimension gauge according to claim 1, characterized in that, A transverse power cylinder (7) is installed on the rear side of the first detection block (22). The drive shaft of the transverse power cylinder (7) is connected to the second detection block (23). The transverse power cylinder (7) works to push the first detection block (22) and the second detection block (23) away from each other or close to each other.

5. The automotive subframe opening dimension gauge according to claim 1, characterized in that, An electronic displacement sensor (25) is installed on the first detection block (22), and a displacement feedback device (26) that cooperates with the electronic displacement sensor (25) is installed on the second detection block (23).

6. The automotive subframe opening dimension gauge according to claim 1, characterized in that, The substrate (2) has multiple mounting slots (13), and an elastic component (6) is installed in the mounting slot (13). The elastic component (6) is movably connected to the transverse slide (3). The elastic component (6) applies an upward pushing force to the transverse slide (3) so that there is a gap between the transverse slide (3) and the substrate (2).

7. The automotive subframe opening dimension gauge according to claim 6, characterized in that, The substrate (2) is provided with four mounting slots (13), and four sets of elastic components (6) are installed on the substrate (2) respectively. The four sets of elastic components (6) correspond to the four corners of the horizontal slide (3).

8. The automotive subframe opening dimension gauge according to claim 6 or 7, characterized in that, The elastic component (6) includes a connecting rod (11) and a spring (12). The spring (12) is sleeved on the outside of the connecting rod (11). The bottom of the connecting rod (11) is installed in the mounting groove (13). The top of the connecting rod (11) passes through the transverse slide (3). A rod cap (19) is provided on the top of the connecting rod (11) and is located on the transverse slide (3).

9. The automotive subframe opening dimension gauge according to claim 1 or 6, characterized in that, A gyroscope (5) is also provided between the transverse slide (3) and the base plate (2). The gyroscope (5) is used to detect the deflection angle of the transverse slide (3).

10. The automotive subframe opening dimension gauge according to claim 1, characterized in that, The longitudinal slide rail (28) assembly includes two longitudinal slide rails (28) on the left and right sides of the frame (1). The base plate (2) is mounted on the two longitudinal slide rails (28). The longitudinal slide rails (28) are set perpendicular to the transverse slide (3). The frame (1) is also provided with an L-shaped limiting block (29). The L-shaped limiting block (29) restricts the position limit of the base plate (2) moving forward.

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