A structure for measuring the maximum cross-section of the wire motherboard's OBD diameter.

Abstract

This invention provides a maximum cross-sectional structure for measuring the OBD diameter of a wire nut, comprising: a main body with a wire nut placement assembly for placing the wire nut to be measured; multiple measuring assemblies slidably disposed on the main body, each measuring assembly having a first measuring element that abuts against a groove in the wire nut after sliding; a positioning assembly located on the side of the main body near the wire nut placement assembly for lateral positioning of the wire nut; multiple pressing assemblies located on the main body near the wire nut placement assembly for pressing the wire nut; and a sweeping assembly connected to the wire nut placement assembly for moving the wire nut placement assembly. This invention improves the accuracy of OBD diameter measurement of wire nuts.

Description

Technical Field

[0001] This utility model relates to the field of wire mother OBD diameter measurement technology, specifically, to a structure for measuring the maximum cross-section of wire mother OBD diameter. Background Technology

[0002] Due to the inherent precision of its machining, the positioning accuracy of the nut is only ±0.02mm or lower, resulting in a significant error in measuring the groove diameter at the μ level. By adding a sweeping function to the measuring probe through an eccentric cam structure, the OBD diameter value of the nut can be captured from multiple sections, effectively capturing the maximum OBD diameter of the nut and improving its measurement accuracy to <1μm, thus meeting market demands.

[0003] In existing technologies, OBD measurements are typically obtained statically with a single positioning and clamping operation. This involves the LVDT probe being positioned stationary within the groove of the product to be measured, and its OBD value is acquired. However, due to the inherent manufacturing precision of the product and the positioning accuracy on the equipment, the industry standard is generally ±0.02mm or lower (>±0.02mm). This positioning accuracy introduces an error exceeding 0.3μm in the measured value, making it difficult to meet the MSA (GRR<10%, Cgk>1.33) qualification criteria. Utility Model Content

[0004] Therefore, this utility model embodiment provides a structure for measuring the maximum cross-section of the wire mother OBD diameter, which makes the measurement accuracy of the wire mother OBD diameter higher.

[0005] To address the aforementioned problems, this utility model provides a maximum cross-sectional structure for measuring the diameter of a wire nut in an OBD scan, comprising: a main body, the main body having a wire nut placement assembly for placing the wire nut to be measured; multiple measuring assemblies slidably disposed on the main body, each measuring assembly having a first measuring element that abuts against a groove in the wire nut to be measured after sliding; a positioning assembly disposed on the side of the main body near the wire nut placement assembly for lateral positioning of the wire nut to be measured; multiple pressing assemblies disposed on the main body near the wire nut placement assembly for pressing the wire nut to be measured; and a scanning assembly connected to the wire nut placement assembly for moving the wire nut placement assembly.

[0006] Compared with existing technologies, the technical effects achieved by this solution are as follows: the nut placement assembly on the main body stably accommodates the nut to be measured; multiple measuring components slide on the main body and are equipped with a first measuring element, which abuts against the nut groove after sliding to achieve multi-point contact measurement; the positioning assembly ensures accurate lateral positioning of the nut, avoiding the influence of initial position deviation on the measurement results; multiple pressing components effectively fix the position of the nut, preventing movement or vibration during measurement; the sweeping assembly drives the nut placement assembly to move, realizing dynamic sweeping multi-section measurement, thereby continuously capturing the OBD diameter values ​​of different sections of the nut; by comparing and selecting the maximum value, the limitations of single-point static measurement are significantly eliminated, the systematic errors caused by the nut's own machining accuracy and clamping deviation are reduced, the overall measurement accuracy and repeatability are improved, the consistency and reliability of the measurement data are ensured, and the requirements of high-precision quality control are met. At the same time, this structure simplifies the operation process, improves measurement efficiency, and lays the foundation for automated measurement applications.

[0007] In one embodiment of this utility model, the main body is provided with a slide rail, which corresponds to the sliders on multiple measuring components, so that the multiple measuring components can slide on the slide rail with the help of the sliders.

[0008] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: the sliding design simplifies the adjustment and reset of the measuring components, facilitates control by operators or automated systems, improves the adaptability and reliability of the overall equipment, and helps maintain high-precision performance in complex measurement environments.

[0009] In one embodiment of this utility model, each measuring component further includes: a measuring part, which is slidably disposed on a slide rail and has a second measuring element disposed on the measuring part; a linkage member, which is disposed on the main body and has one end in contact with the second measuring element and the other end of the linkage member has a first measuring element disposed thereon; wherein, the measurement data of the first measuring element is transferred to the second measuring element by moving the linkage member.

[0010] Compared with existing technologies, the technical effects achieved by this solution are as follows: A measuring unit is slidably mounted on a slide rail and a second measuring element is installed. One end of a linkage component contacts the second measuring element, while the other end houses the first measuring element. The movement of the linkage component transfers the contact data of the first measuring element in the nut groove to the second measuring element. This indirect measurement mechanism reduces friction or deformation errors caused by direct contact, improving the accuracy and stability of data transmission. The second measuring element can employ a high-precision sensor such as an LVDT to optimize signal acquisition and processing. The linkage component acts as a force or displacement transmission medium, ensuring that the measured value accurately reflects the groove size. Furthermore, this structure adapts to the geometric characteristics of the nut groove, allowing for multi-directional measurements within a limited space, enhancing the flexibility and measurement coverage of the equipment, and providing a reliable data source for calculating the maximum OBD diameter.

[0011] In one embodiment of this utility model, a pull ring is provided on the side of the linkage component away from the test wire nut.

[0012] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: The pull ring design facilitates manual or mechanical operation, enabling rapid pulling or position adjustment of the linkage, simplifying the initial setup and reset process of the measuring components, improving measurement efficiency, and enhancing the operability of the equipment by serving as an interface, reducing clamping time, ensuring accurate contact of the measuring probe with the nut groove, avoiding measurement deviations caused by inconvenient operation, and supporting durability under frequent use, reducing maintenance requirements, making the measurement process more flexible and controllable, helping to maintain consistency and repeatability in multiple measurements, and improving the overall practicality of the equipment and user experience.

[0013] In one embodiment of this utility model, the side of the linkage connecting the first measuring component and the second measuring component is a vertical plate structure, and the two vertical plates are parallel to each other.

[0014] Compared with existing technologies, the technical effects achieved by this solution are as follows: The side connecting the first and second measuring components of the linkage is a vertical plate structure, and the two vertical plates are parallel to each other. This parallel vertical plate design provides a stable force transmission path, ensuring the consistency and linearity of force direction during measurement, reducing measurement errors caused by torque or lateral force. The vertical plate structure enhances the rigidity and deformation resistance of the linkage, preventing wear or displacement during long-term use, improving the accuracy and long-term reliability of measurement data. Simultaneously, the parallel arrangement optimizes space utilization, making the measuring component structure compact and adaptable to narrow or complex measurement environments, ensuring stable data conversion, and providing structural support for high-precision OBD diameter calculation.

[0015] In one embodiment of this utility model, each pressing component further includes: a first fixing part, which is disposed on the nut placement component; and a rotating part, which is rotatably disposed on the first fixing part and is used to cooperate with the nut to be tested.

[0016] Compared with existing technologies, the technical effects achieved by this solution are as follows: The first fixing part of the pressing component is located on the nut placement component, and the rotating part is rotatably located on the first fixing part and engages with the nut to be measured. This rotating design allows the pressing component to flexibly adapt to the shape and size of the nut, quickly clamping or releasing the nut through rotation, improving clamping efficiency and ease of operation. The engagement between the rotating part and the nut ensures a firm fixation, preventing the nut from moving or rotating during measurement, reducing positioning errors caused by loosening. Simultaneously, the rotating mechanism disperses the clamping force, reducing local pressure or damage to the nut surface, protecting the workpiece integrity, ensuring that the measurement data accurately reflects the actual dimensions, and improving measurement repeatability and equipment lifespan.

[0017] In one embodiment of this utility model, the rotating part is provided with a locking member extending toward the nut to be tested, the locking member being used to clamp the nut to be tested.

[0018] Compared with existing technologies, the technical effects achieved by this solution are as follows: The rotating part is equipped with a clamping element extending towards the nut to be measured. The clamping element is used to clamp the nut. The design of the clamping element provides a precise clamping point that matches the contour of the nut, enhancing the contact area and clamping force distribution, ensuring that the nut maintains a stable position during measurement, preventing slippage or displacement, and reducing measurement errors caused by loose clamping. The optimized shape of the clamping element improves force transmission, avoids deformation of the nut caused by stress concentration, and maintains unchanged geometric characteristics. At the same time, this structure supports rapid clamping and release, improves measurement efficiency, adapts to high-frequency production environments, and provides a reliable fixed foundation for continuous multi-section measurements.

[0019] In one embodiment of this utility model, the positioning component further includes: a second fixing part, which is disposed on the main body, and the second fixing part extends toward the nut to be tested with a positioning part, which is used to engage with the nut to be tested.

[0020] Compared with existing technologies, the technical effects achieved by this solution are as follows: A second fixing part of the positioning component is located on the main body and extends towards the nut to be measured. The positioning part engages with the nut, ensuring that the nut is accurately placed in the predetermined position before measurement, providing a unified reference point, reducing the impact of initial positioning deviation on the measurement results. The engagement between the positioning part and the nut enhances positional stability, prevents lateral movement during measurement, and improves measurement accuracy and repeatability. Simultaneously, the rigid design of the positioning component ensures durability and consistency during long-term use, adapts to high-load measurement requirements, provides a solid foundation for dynamic cross-scan measurement, and ensures the reliability of multi-section data acquisition.

[0021] In one embodiment of this utility model, the positioning part and the second fixing part are perpendicular to each other, and the shape of the positioning part is adapted to engage with the nut to be tested.

[0022] Compared with existing technologies, the technical effects achieved by this solution are as follows: the positioning part and the second fixing part are perpendicular to each other, and the shape of the positioning part is adapted to the nut to be measured. The vertical design ensures that the positioning force direction is consistent, avoiding positional deviation caused by oblique force, thus improving positioning accuracy and stability. The shape adaptation and engagement ensures that the positioning part is in close contact with the nut surface, providing uniform support and constraint, preventing the nut from moving or rotating during measurement, reducing stress concentration, and protecting the integrity of the nut surface. At the same time, this customized engagement optimizes the positioning effect, enhances the adaptability of the equipment to different nut specifications, improves the flexibility and versatility of the measurement system, and provides a reliable guarantee for high-precision OBD diameter measurement.

[0023] By adopting the technical solution of this utility model, the following technical effects can be achieved: (1) The nut to be measured is stably accommodated by the nut placement component on the main body. Multiple measuring components are slidably placed on the main body and equipped with the first measuring component. After sliding, they abut against the nut groove to achieve multi-point contact measurement. The positioning component ensures accurate lateral positioning of the nut and avoids the measurement result being affected by the initial position deviation. Multiple pressing components effectively fix the position of the nut to prevent movement or vibration during the measurement process. The sweeping component drives the nut placement component to move, realizing dynamic sweeping multi-section measurement, thereby continuously capturing the OBD diameter value of different sections of the nut. By comparing and selecting the maximum value, the limitations of single-point static measurement are significantly eliminated, the systematic error caused by the nut's own processing accuracy and clamping deviation is reduced, the overall measurement accuracy and repeatability are improved, the consistency and reliability of the measurement data are ensured, and the high-precision quality control requirements are met. At the same time, this structure simplifies the operation process, improves the measurement efficiency, and lays the foundation for automated measurement applications. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 One of the structural schematic diagrams of a wire mother OBD diameter measurement cross-sectional maximum cross-section structure provided in this utility model embodiment; Figure 2 This is the second schematic diagram of a structure for measuring the maximum cross-sectional area of ​​a wire mother OBD diameter, provided as an embodiment of the present invention. Figure 3 This is the third structural schematic diagram of a wire mother OBD diameter measurement cross-sectional maximum cross-section structure provided for an embodiment of this utility model; Figure 4 This is the fourth structural schematic diagram of a wire mother OBD diameter measurement cross-sectional maximum cross-section structure provided for an embodiment of this utility model.

[0025] Explanation of reference numerals in the attached figures: 100. Maximum cross-sectional structure for measuring the diameter of the nut in OBD scanning mode; 110. Main body; 120. Nut placement assembly; 130. Measuring assembly; 131. First measuring component; 132. Measuring part; 133. Second measuring component; 134. Linkage component; 135. Pull ring; 140. Positioning assembly; 141. Second fixing part; 142. Positioning part; 150. Pressing assembly; 151. First fixing part; 152. Rotating part; 153. Engaging component; 160. Scanning assembly. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] [First Embodiment] See Figures 1-4 This utility model provides a maximum cross-sectional structure 100 for measuring the diameter of a wire nut in an OBD scan, comprising: a main body 110, wherein the main body 110 is provided with a wire nut placement assembly 120, the wire nut placement position being used to place the wire nut to be measured; multiple measuring assemblies 130, the multiple measuring assemblies 130 being slidably disposed on the main body 110, and each measuring assembly 130 being provided with a first measuring element 131, the first measuring element 131 abutting against the groove of the wire nut to be measured after the measuring assembly 130 slides; a positioning assembly 140, the positioning assembly 140 being disposed on the side of the main body 110 near the wire nut placement assembly 120, the positioning assembly 140 being used for lateral positioning of the wire nut to be measured; multiple pressing assemblies 150, the multiple pressing assemblies 150 being disposed on the main body 110 near the wire nut placement assembly 120, the multiple pressing assemblies 150 being used for pressing the wire nut to be measured; and a scanning assembly 160, the scanning assembly 160 being connected to the wire nut placement assembly 120, the scanning assembly 160 being used to drive the wire nut placement assembly 120 to move.

[0028] Specifically, in actual operation, the nut to be tested is first placed in the nut placement assembly 120, and then the nut to be tested is laterally positioned by the positioning assembly 140. After positioning, multiple pressing assemblies 150 are activated, and after the rotating part 152 rotates, the nut to be tested is clamped by the clamping part 153. Then, multiple measuring assemblies 130 are activated. By pulling the pull ring 135, the first measuring element 131, i.e. the probe, is inserted into the groove of the nut to be tested. There can be three measuring assemblies 130. Then, through the conversion of the linkage 134 and the second measuring element 133 (which can be an LVDT sensor), the data is obtained, and the OBD diameter of the nut to be tested is calculated by the formula.

[0029] Preferably, the nut to be tested is stably accommodated by the nut placement assembly 120 on the main body 110. Multiple measuring components 130 are slidably disposed on the main body 110 and equipped with a first measuring element 131. After sliding, they abut against the nut groove to achieve multi-point contact measurement. The positioning assembly 140 ensures accurate lateral positioning of the nut and avoids the measurement results being affected by initial position deviation. Multiple pressing components 150 effectively fix the position of the nut to prevent movement or vibration during measurement. The sweeping assembly 160 drives the nut placement assembly 120 to move, realizing dynamic sweeping multi-section measurement, thereby continuously capturing the OBD diameter values ​​of different sections of the nut. By comparing and selecting the maximum value, the limitations of single-point static measurement are significantly eliminated, the systematic errors caused by the nut's own processing accuracy and clamping deviation are reduced, the overall measurement accuracy and repeatability are improved, the consistency and reliability of the measurement data are ensured, and the requirements of high-precision quality control are met. At the same time, this structure simplifies the operation process, improves measurement efficiency, and lays the foundation for automated measurement applications.

[0030] Specifically, the main body 110 is provided with a slide rail, which corresponds to the sliders on multiple measuring components 130, so that the multiple measuring components 130 can slide on the slide rail with the help of the sliders.

[0031] Preferably, the sliding design simplifies the adjustment and reset of the measuring component 130, making it easier for operators or automated systems to control, improving the overall adaptability and reliability of the equipment, and helping to maintain high-precision performance in complex measurement environments.

[0032] Specifically, each measuring component 130 further includes: a measuring part 132, which is slidably disposed on a slide rail, and a second measuring element 133 is disposed on the measuring part 132; a linkage 134, which is disposed on the main body 110, and one end of the linkage 134 contacts the second measuring element 133, and the other end of the linkage 134 is provided with a first measuring element 131; wherein, the movement of the linkage 134 causes the measurement data of the first measuring element 131 to be transferred to the second measuring element 133.

[0033] Preferably, the measuring unit 132 is slidably mounted on the slide rail and a second measuring element 133 is provided thereon. One end of the linkage 134 contacts the second measuring element 133 and the other end is provided with a first measuring element 131. The movement of the linkage 134 is used to transfer the contact data of the first measuring element 131 in the wire groove to the second measuring element 133. This indirect measurement mechanism reduces friction or deformation errors caused by direct contact and improves the accuracy and stability of data transmission. The second measuring element 133 can use a high-precision sensor such as an LVDT to optimize signal acquisition and processing. The linkage 134 acts as a force or displacement transmission medium to ensure that the measured value truly reflects the groove size. At the same time, this structure adapts to the geometric characteristics of the wire groove, allowing multi-directional measurements in a limited space, enhancing the flexibility and measurement coverage of the equipment, and providing a reliable data source for calculating the maximum OBD diameter.

[0034] Specifically, the linkage 134 has a pull ring 135 on the side away from the test wire nut.

[0035] Preferably, the pull ring 135 is designed for easy manual or mechanical operation, enabling rapid pulling or position adjustment of the linkage 134, simplifying the initial setup and reset process of the measuring component 130, and improving measurement efficiency. As an interface, the pull ring 135 enhances the operability of the equipment, reduces clamping time, ensures accurate contact of the measuring probe with the nut groove, and avoids measurement deviations caused by inconvenient operation. At the same time, the pull ring 135 structure supports durability under frequent use, reduces maintenance requirements, makes the measurement process more flexible and controllable, helps maintain consistency and repeatability in multiple measurements, and improves the overall practicality of the equipment and user experience.

[0036] Specifically, the side of the linkage 134 that connects the first measuring component 131 and the second measuring component 133 is a vertical plate structure, and the two vertical plates are parallel to each other.

[0037] Preferably, the side of the linkage 134 connecting the first measuring component 131 and the second measuring component 133 is a vertical plate structure, and the two vertical plates are parallel to each other. This parallel vertical plate design provides a stable force transmission path, ensuring the consistency and linearity of the force direction during the measurement process, reducing measurement errors caused by torque or lateral force. The vertical plate structure enhances the rigidity and deformation resistance of the linkage 134, preventing wear or displacement during long-term use, improving the accuracy and long-term reliability of measurement data. At the same time, the parallel arrangement optimizes space utilization, making the measuring component 130 compact and adaptable to narrow or complex measurement environments, ensuring the stability of the data conversion process, and providing structural protection for high-precision OBD diameter calculation.

[0038] Specifically, each pressing component 150 further includes: a first fixing part 151, which is disposed on the nut placement component 120; and a rotating part 152, which is rotatably disposed on the first fixing part 151 and is used to cooperate with the nut to be tested.

[0039] Preferably, the first fixing part 151 of the pressing component 150 is disposed on the wire nut placement component 120, and the rotating part 152 is rotatably disposed on the first fixing part 151 and cooperates with the wire nut to be measured. This rotating design allows the pressing component 150 to flexibly adapt to the shape and size of the wire nut, and to quickly clamp or release the wire nut through the rotation action, thereby improving clamping efficiency and ease of operation. The cooperation between the rotating part 152 and the wire nut ensures a firm fixation, preventing the wire nut from moving or rotating during the measurement process, reducing positioning errors caused by loosening. At the same time, the rotating mechanism disperses the clamping force, reducing local pressure or damage to the surface of the wire nut, protecting the integrity of the workpiece, ensuring that the measurement data truly reflects the actual size, and improving measurement repeatability and equipment lifespan.

[0040] Specifically, the rotating part 152 is provided with a locking member 153 extending toward the nut to be tested, and the locking member 153 is used to clamp the nut to be tested.

[0041] Preferably, the rotating part 152 is provided with a clamping member 153 extending toward the wire nut to be measured. The clamping member 153 is used to clamp the wire nut to be measured. The clamping member 153 is designed to provide a precise clamping point that matches the contour of the wire nut, enhances the contact area and clamping force distribution, ensures that the wire nut maintains a stable position during measurement, prevents slippage or displacement, and reduces measurement errors caused by loose clamping. The shape of the clamping member 153 optimizes force transmission, avoids wire nut deformation caused by stress concentration, and maintains unchanged geometric characteristics. At the same time, this structure supports quick clamping and release, improves measurement efficiency, adapts to high-frequency production environments, and provides a reliable fixed foundation for continuous multi-section measurement.

[0042] Specifically, the positioning component 140 further includes a second fixing part 141, which is disposed on the main body 110, and the second fixing part 141 extends toward the nut to be tested with a positioning part 142, which is used to engage with the nut to be tested.

[0043] Preferably, the second fixing part 141 of the positioning component 140 is provided on the main body 110 and extends toward the wire nut to be measured, and the positioning part 142 is used to engage with the wire nut to be measured. This positioning structure ensures that the wire nut is accurately placed in the predetermined position before measurement, provides a uniform reference point, reduces the influence of initial positioning deviation on the measurement results, and the engagement of the positioning part 142 with the wire nut enhances positional stability, prevents lateral movement during measurement, and improves measurement accuracy and repeatability. At the same time, the rigid design of the positioning component 140 ensures durability and consistency in long-term use, adapts to high load measurement requirements, provides a solid foundation for dynamic cross-scan measurement, and ensures the reliability of multi-section data acquisition.

[0044] Specifically, the positioning part 142 and the second fixing part 141 are perpendicular to each other, and the shape of the positioning part 142 is adapted to engage with the nut to be tested.

[0045] Preferably, the positioning part 142 and the second fixing part 141 are perpendicular to each other, and the shape of the positioning part 142 is adapted to engage with the nut to be measured. The vertical design ensures that the positioning force direction is consistent, avoids positional deviation caused by oblique force, and improves positioning accuracy and stability. The shape adaptation and engagement make the positioning part 142 in close contact with the surface of the nut, providing uniform support and constraint, preventing the nut from moving or rotating during the measurement process, reducing stress concentration, and protecting the integrity of the nut surface. At the same time, this customized engagement optimizes the positioning effect, enhances the adaptability of the equipment to different specifications of nuts, improves the flexibility and versatility of the measurement system, and provides a reliable guarantee for high-precision OBD diameter measurement.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wire nut OBD diameter measurement sweep maximum cross section structure, characterized by, include: The main body (110) is provided with a nut placement assembly (120) for placing the nut to be tested; Multiple measuring components (130) are slidably disposed on the main body (110), and each measuring component (130) is provided with a first measuring element (131), the first measuring element (131) abutting against the groove of the nut to be tested after the measuring component (130) slides. A positioning component (140) is disposed on the main body (110) near the nut placement component (120), and the positioning component (140) is used for lateral positioning of the nut to be tested; Multiple pressing components (150) are disposed on the main body (110) near the nut placement component (120), and the multiple pressing components (150) are used to press the nut to be tested; A sweeping assembly (160) is connected to the nut placement assembly (120), and the sweeping assembly (160) is used to drive the nut placement assembly (120) to move.

2. The wire mother OBD diameter measurement cross-sectional maximum cross-section structure according to claim 1, characterized in that, The main body (110) is provided with a slide rail, which is configured to correspond to the sliders on the plurality of measuring components (130), so that the plurality of measuring components (130) can slide on the slide rail with the help of the sliders.

3. The wire barrel OBD diameter measurement cross-scan maximum section structure of claim 2, wherein, Each measurement component (130) also includes: A measuring unit (132) is slidably disposed on the slide rail, and a second measuring element (133) is provided on the measuring unit (132); Linkage component (134), wherein the linkage component (134) is disposed on the main body (110), and one end of the linkage component (134) contacts the second measuring component (133), and the other end of the linkage component (134) is provided with the first measuring component (131); The movement of the linkage (134) causes the measurement data of the first measuring element (131) to be transferred to the second measuring element (133).

4. The wire mother OBD diameter measurement cross-sectional maximum cross-section structure according to claim 3, characterized in that, The linkage (134) has a pull ring (135) on the side away from the test wire nut.

5. The wire mother OBD diameter measurement cross-sectional maximum cross-section structure according to claim 4, characterized in that, The linkage (134) has a vertical plate structure on one side connecting the first measuring component (131) and the second measuring component (133), and the two vertical plates are parallel to each other.

6. The wire barrel OBD diameter measurement cross-scan maximum section structure of claim 1, wherein, Each compression assembly (150) also includes: A first fixing part (151) is provided on the nut placement assembly (120); A rotating part (152) is rotatably disposed on the first fixed part (151), and the rotating part (152) is used to cooperate with the nut to be tested.

7. The wire mother OBD diameter measurement cross-sectional maximum cross-section structure according to claim 6, characterized in that, The rotating part (152) is provided with a locking member (153) extending toward the nut to be tested, the locking member (153) being used to clamp the nut to be tested.

8. The wire barrel OBD diameter measurement cross-scan maximum cross-section structure of claim 1, wherein, The positioning component (140) further includes: The second fixing part (141) is provided on the main body (110), and the second fixing part (141) extends toward the test wire nut with a positioning part (142), the positioning part (142) is used to engage with the test wire nut.

9. The wire mother OBD diameter measurement cross-sectional maximum cross-section structure according to claim 8, characterized in that, The positioning part (142) and the second fixing part (141) are perpendicular to each other, and the shape of the positioning part (142) is adapted to engage with the nut to be tested.

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