A device for quickly detecting the diameter of a rod-shaped part

By designing a rapid detection device for the diameter of rod-shaped parts, and utilizing a combination of correction and measurement components, the problem of low accuracy and efficiency in the detection of rod-shaped parts was solved, achieving efficient and accurate diameter detection of rod-shaped parts.

CN224365484UActive Publication Date: 2026-06-16BBMG KESHI (CAOFEIDIAN) PRECISION MFG CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BBMG KESHI (CAOFEIDIAN) PRECISION MFG CO LTD
Filing Date
2025-06-28
Publication Date
2026-06-16

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Abstract

The present disclosure relates to the technical field of related equipment detection, and one embodiment of the present disclosure provides a rod part diameter size rapid detection device, which comprises a base and a pair of telescopic cylinders, the telescopic cylinders are arranged at two ends of the top of the base, a correction assembly is arranged in the base, and a measurement assembly is arranged at the output end of the telescopic cylinder. The correction assembly comprises a pair of track frames arranged in the base, a pair of moving blocks are slidably connected to the track frames, a clamping rod is arranged at the top of the moving block, a pair of guide rods are arranged at two ends in the base, and the track frames are slidably connected to the guide rods. Through the above technical scheme, the technical problem that the existing technology needs to invest a large number of detection personnel and equipment, the detection process is complicated, the time is long, and the human and time costs are greatly increased is solved.
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Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of detection-related equipment technology, and more specifically, to a rapid detection device for the diameter of rod-shaped parts. Background Technology

[0002] In the field of mechanical manufacturing, rod-shaped parts are fundamental components widely used in industries such as automobiles, aerospace, and precision instruments. The accuracy of their diameter directly affects the overall performance and assembly quality of equipment. However, current diameter measurement technologies for rod-shaped parts have significant shortcomings, making it difficult to meet the high-precision and high-efficiency production demands of modern manufacturing.

[0003] Due to the diverse specifications and dimensions of rod-shaped workpieces, traditional batch processing inspections often rely on sampling. While sampling can save time and labor costs to some extent, it cannot comprehensively cover every workpiece, easily leading to defective products flowing into subsequent production stages. Once defective products are used in assembly, they may cause equipment malfunctions, shorten service life, or even create serious safety hazards. Furthermore, sampling methods make it difficult to monitor and adjust dimensional deviations in real time during production, failing to promptly detect process problems and affecting product quality stability.

[0004] While individual testing can guarantee accuracy, it requires a significant investment in personnel and equipment, resulting in a cumbersome and time-consuming process that substantially increases labor and time costs and reduces production efficiency. This is especially problematic in large-scale mass production, where it severely restricts a company's capacity and economic benefits. Furthermore, manual testing is highly susceptible to subjective factors, making it difficult to guarantee the accuracy and consistency of results. The repetitive nature of the work can also lead to operator fatigue, further increasing the risk of false positives and false negatives.

[0005] With the increasing trend of intelligent and automated development in the manufacturing industry, there is an urgent need to develop a device that can quickly and accurately detect the diameter of rod-shaped parts of different sizes. Utility Model Content

[0006] To overcome the above-mentioned defects, the embodiments of this disclosure provide a rapid detection device for the diameter of rod-type parts, which solves the technical problem of the existing method of one-by-one detection, which, although it can ensure detection accuracy, requires a large number of detection personnel and equipment, and the detection process is cumbersome and time-consuming, greatly increasing the manpower and time costs.

[0007] According to one aspect, at least one embodiment of this disclosure provides a rapid detection device for the diameter of rod-shaped parts, comprising:

[0008] A base and a pair of telescopic cylinders, the telescopic cylinders being located at both ends of the top of the base;

[0009] Corrective components, wherein the corrective components are disposed inside the base;

[0010] A measuring component is disposed at the output end of the telescopic cylinder;

[0011] The correction assembly includes a pair of track frames, which are disposed within the base. Each track frame has a pair of movable blocks slidably connected to it. Each movable block has a clamping rod on its top. Each end of the base has a pair of guide rods, and each track frame is slidably fitted onto the guide rods.

[0012] As a further technical solution, each guide rod is fitted with a spring, which is supported between the inner surface of the track frame and the base. A gear is rotatably connected to the bottom of the base, and a rack is provided at the bottom of each track frame, with the rack meshing with the gear.

[0013] As a further technical solution, the measuring component includes a pair of bonding plates, which are connected to the output end of the telescopic cylinder. Connecting frames are provided at both ends of the top of the base, and the telescopic cylinder is fixed horizontally on the connecting frames.

[0014] As a further technical solution, a stabilizing rod is provided on the side surface of the bonding plate, one end of which is movably connected to the connecting frame. A ruler is provided on one side of the bonding plate, and a pair of pointers are provided on the other side of the bonding plate.

[0015] As a further technical solution, the clamping rod has an overall L-shaped structure, and the vertical part of the clamping rod has a certain tilt angle.

[0016] As a further technical solution, the track frame is provided with several friction rods, and the movable block is movably connected to the friction rods.

[0017] As a further technical solution, the height of the ruler plate is higher than the highest point of the top of the clamping rod.

[0018] As a further technical solution, the number of pointers is two, which are respectively attached to the upper and lower surfaces of the ruler.

[0019] The beneficial effects of the embodiments disclosed herein are as follows:

[0020] 1. In this disclosure, the straightening component achieves precise workpiece positioning through gear and rack transmission and spring cooperation. When the gear is rotated, the two side rails slide in opposite directions on the guide rod, driving the clamping rod to adjust and automatically center the workpiece. The spring on the guide rod provides elastic support, and when compressed, it pushes the rails to make fine adjustments to ensure that the workpiece is level with consistent front and rear height. The moving block on the rails can slide back and forth, driving the clamping rod to avoid the protrusions on the workpiece surface and select a suitable clamping position, avoiding the impact of clamping deviation on the accuracy of detection. This component ensures that the workpiece is in a standard position during detection, laying the foundation for accurate measurement and solving the detection error problem caused by non-standard workpiece placement.

[0021] 2. In this disclosure, the measuring component achieves rapid measurement of diameter dimensions using a telescopic cylinder and a ruler-pointer structure. The telescopic cylinder drives the bonding plate to quickly approach and adhere to both sides of the workpiece. The set structure of the stabilizing rod and connecting frame provides stable guidance for the movement of the bonding plate, preventing deviation. The ruler on one side of the bonding plate cooperates with the pointer on the other side. When the bonding plate clamps the workpiece, the pointer directly indicates the diameter dimension on the ruler. Data can be read quickly without complicated operations, which greatly improves the detection efficiency compared to traditional manual measurement. The component has a simple and intuitive structure, achieves accurate measurement through mechanical means, and effectively solves the problems of low efficiency and high cost in batch detection. At the same time, the two pointers adhere to the upper and lower end faces of the ruler to avoid misalignment and ensure measurement accuracy. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0023] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0024] Figure 2 This is an isometric drawing of the present disclosure;

[0025] Figure 3 Appendix to this disclosure Figure 1 Enlarged view of part A in the middle;

[0026] In the diagram: 1. Base; 2. Telescopic cylinder; 3. Correction assembly; 3-1. Track frame; 3-2. Moving block; 3-3. Clamping rod; 3-4. Guide rod; 3-5. Spring; 3-6. Gear; 3-7. Rack; 4. Measuring assembly; 4-1. Adhesive plate; 4-2. Connecting frame; 4-3. Stabilizing rod; 4-4. Ruler plate; 4-5. Pointer; 5. Friction rod. Detailed Implementation

[0027] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0028] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0029] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0030] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0032] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] like Figures 1-3 As shown, it illustrates a rapid detection device for the diameter of a rod-like part according to an embodiment of the present disclosure, comprising:

[0034] The base 1 and a pair of telescopic cylinders 2 are provided at both ends of the top of the base 1;

[0035] Correction component 3, wherein the correction component 3 is disposed inside the base 1;

[0036] Measuring component 4 is disposed at the output end of the telescopic cylinder 2;

[0037] The corrective component 3 includes a pair of track frames 3-1, which are disposed within the base 1. Each track frame 3-1 is slidably connected to a pair of moving blocks 3-2. Each moving block 3-2 has a clamping rod 3-3 on its top. Each end of the base 1 has a pair of guide rods 3-4. Each track frame 3-1 is slidably fitted onto the guide rods 3-4. Each guide rod 3-4 is fitted with a spring 3-5, which supports the track frame 3-1 between the inner surface of the base 1 and the inner surface of the base 1. A gear 3-6 is rotatably connected to the bottom of the base 1. Each track frame 3-1 has a rack 3-7 at its bottom, which meshes with the gear 3-6.

[0038] In some examples, a correction component 3 is designed to ensure the workpiece is centered and placed horizontally to guarantee inspection accuracy, while also allowing for flexible adjustment of the clamping rod 3-3. The gear 3-6 inside the base 1 meshes with the rack 3-7 at the bottom of the two side rail frames 3-1. When the gear 3-6 is rotated, the two side rail frames 3-1 slide in opposite directions on the guide rod 3-4, causing the moving block 3-2 and clamping rod 3-3 to adjust their positions, automatically centering the workpiece. The spring 3-5 mounted on the rail frame 3-1 provides elastic support. When the workpiece is placed, the spring 3-5 deforms under pressure, pushing the rail frame 3-1 to make minor adjustments, ensuring the workpiece's front and rear height is consistent and it remains horizontal. The moving block 3-2 can slide back and forth along the rail frame 3-1, causing the clamping rod 3-3 to move back and forth, avoiding protrusions on the workpiece surface, selecting a suitable clamping position, and preventing clamping deviations caused by uneven workpiece surfaces. This ensures the workpiece is in a standard position during inspection, laying the foundation for accurate measurement.

[0039] like Figures 1-3 As shown in the figure, the measuring component 4 in this embodiment includes a pair of bonding plates 4-1. The bonding plates 4-1 are connected to the output end of the telescopic cylinder 2. The base 1 has connecting frames 4-2 at both ends of its top. The telescopic cylinder 2 is horizontally fixed on the connecting frames 4-2. The side surface of the bonding plate 4-1 is provided with a stabilizing rod 4-3. One end of the stabilizing rod 4-3 is movably fitted into the connecting frame 4-2. A ruler plate 4-4 is provided on one side end face of the bonding plate 4-1, and a pair of pointers 4-5 are provided on the other side end face of the bonding plate 4-1.

[0040] In some examples, a measuring component 4 is designed to achieve rapid detection of workpiece diameter. A pair of bonding plates 4-1 are driven by a telescopic cylinder 2, which can quickly approach the workpiece and adhere to its two side surfaces. The movable fitting structure of the stabilizing rod 4-3 and the connecting frame 4-2 provides stable guidance for the movement of the bonding plates 4-1 and prevents deviation. A ruler 4-4 on one bonding plate 4-1 is engraved with precise graduations, and a pointer 4-5 on the other bonding plate 4-1 cooperates with the ruler 4-4. When the bonding plates 4-1 clamp the workpiece, the graduation indicated by the pointer 4-5 is the workpiece diameter. The rapid extension and retraction of the telescopic cylinder 2, combined with the precise positioning of the bonding plates 4-1, can complete a measurement operation in a short time, significantly improving detection efficiency compared to traditional manual measurement methods. This measuring component 4 has a simple and intuitive structure, achieving rapid and accurate diameter detection through mechanical structure, effectively solving the problem of low efficiency in batch detection.

[0041] For example, such as Figure 1 As shown, the clamping rod 3-3 has an overall L-shaped structure, and the vertical part of the clamping rod 3-3 has a certain tilt angle.

[0042] In some examples, the L-shaped inclined structure allows the workpiece to slide naturally downwards, accommodating workpieces of various diameters. The L-shaped design of clamping rod 3-3 allows its horizontal portion to support the workpiece, while the inclined vertical portion forms a guide slope. When the workpiece is placed on the horizontal support, it will slide naturally down the inclined surface under gravity until it is stably clamped into the clamping area. This inclined angle is optimized to ensure smooth sliding and positioning of the workpiece while preventing collisions and displacement due to excessive sliding speed. Regardless of the workpiece diameter, automatic centering can be achieved through this inclined slope, eliminating the need for frequent adjustments to the clamping position. For small-diameter workpieces, the guiding effect of the inclined surface assists in accurate positioning; for large-diameter workpieces, this structure also provides sufficient contact area and support force, ensuring that rod-like parts of different specifications can be inspected for diameter under stable clamping conditions, significantly improving the versatility and ease of operation of the inspection device.

[0043] For example, such as Figure 1 As shown, the track frame 3-1 is provided with a number of friction rods 5, and the moving block 3-2 is movably connected to the friction rods 5.

[0044] In some examples, a friction rod 5 is incorporated to enhance the friction with the moving block 3-2, ensuring that movement is only possible through manual pushing and preventing accidental slippage. The friction rod 5 within the track frame 3-1 is made of a surface-roughened alloy material, and its contact surface with the moving block 3-2 undergoes a special process to increase the coefficient of friction between them. When the position of the clamping rod 3-3 needs to be adjusted to accommodate rod-like parts of different sizes or shapes, the operator can manually apply force to push the moving block 3-2, overcoming the resistance from the friction rod 5 and achieving precise positioning of the moving block 3-2 on the friction rod 5. During the inspection process, the friction generated by the friction rod 5 effectively fixes the moving block 3-2, preventing displacement due to collisions, vibrations, or other external forces during workpiece placement, ensuring that the clamping rod 3-3 remains in the preset position and maintains a stable clamping state for the workpiece. This design not only improves the stability and reliability of the correction assembly 3 but also reduces inspection errors caused by accidental slippage of the moving block 3-2, further ensuring the accuracy of the diameter measurement results for rod-like parts.

[0045] For example, such as Figure 1 As shown, the height of the ruler plate 4-4 is higher than the highest point of the clamping rod 3-3.

[0046] In some examples, by extending the clamping rod 3-3 above its highest point, the maximum detectable workpiece size is maximized, accommodating a variety of rod-type workpieces of different specifications.

[0047] For example, such as Figure 3 As shown, the number of pointers 4-5 is two, which are respectively attached to the upper and lower surfaces of the ruler plate 4-4.

[0048] In some examples, by setting two pointers 4-5, the ruler 4-4 is sandwiched in the middle to avoid misalignment affecting accuracy.

[0049] In actual use: After fixing the base 1, install telescopic cylinders 2 at both ends of the top of the base 1. Install the straightening component 3 inside the base 1. The track frame 3-1 is slidably mounted on the guide rod 3-4. The bottom rack 3-7 of the track frame 3-1 meshes with the gear 3-6. The guide rod 3-4 is fitted with a spring 3-5. The track frame 3-1 is slidably connected to the moving block 3-2. The top of the moving block 3-2 is fitted with a clamping rod 3-3. Connecting frames 4-2 are installed at both ends of the top of the base 1. The telescopic cylinders 2 are horizontally fixed on the connecting frames 4-2. The output end of the telescopic cylinders 2 is connected to the bonding plate 4-1. The side surface of the bonding plate 4-1 is fitted with a stabilizing rod 4-3. The stabilizing rod 4-3 is movably fitted inside the connecting frame 4-2. A ruler 4-4 is set on one side of the bonding plate 4-1, and a pair of pointers 4-5 are set on the other side of the bonding plate 4-1. In use, the rod-like parts are placed on the clamping rod 3-3. The rotating gear 3-6 drives the track frame 3-1 to slide on the guide rod 3-4 through the rack 3-7, so that the workpiece is centered. The spring 3-5 pushes the track frame 3-1 to make a fine adjustment to make the workpiece horizontal. The moving block 3-2 slides along the track frame 3-1 to adjust the position of the clamping rod 3-3 to avoid the workpiece protrusion. The telescopic cylinder 2 drives the bonding plate 4-1 to move towards the workpiece. The stabilizing rod 4-3 ensures that the bonding plate 4-1 moves stably. After the bonding plate 4-1 is attached to both sides of the workpiece, the pointers 4-5 indicate the diameter of the workpiece on the ruler 4-4, thus completing the rapid inspection.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A rapid detection device for the diameter of rod-shaped parts, characterized in that, include: The base (1) and a pair of telescopic cylinders (2) are provided at both ends of the top of the base (1); Correction component (3), said correction component (3) is disposed inside the base (1); Measuring component (4), the measuring component (4) is disposed at the output end of the telescopic cylinder (2); The correction component (3) includes a pair of track frames (3-1), which are disposed in the base (1). A pair of moving blocks (3-2) are slidably connected to each track frame (3-1). A clamping rod (3-3) is provided on the top of each moving block (3-2). A pair of guide rods (3-4) are provided at both ends of the base (1). The track frames (3-1) are slidably fitted onto the guide rods (3-4).

2. The rapid detection device for the diameter of rod-shaped parts according to claim 1, characterized in that, Each guide rod (3-4) is fitted with a spring (3-5), which is supported between the inner surface of the track frame (3-1) and the base (1). A gear (3-6) is rotatably connected to the bottom of the base (1). A rack (3-7) is provided at the bottom of each track frame (3-1), and the rack (3-7) meshes with the gear (3-6).

3. The rapid detection device for the diameter of rod-like parts according to claim 1, characterized in that, The measuring component (4) includes a pair of bonding plates (4-1), which are connected to the output end of the telescopic cylinder (2). Both ends of the top of the base (1) are provided with connecting frames (4-2), and the telescopic cylinder (2) is horizontally fixed on the connecting frames (4-2).

4. The rapid detection device for the diameter of rod-type parts according to claim 3, characterized in that, A stabilizing rod (4-3) is provided on the side surface of the bonding plate (4-1). One end of the stabilizing rod (4-3) is movably fitted into the connecting frame (4-2). A ruler plate (4-4) is provided on one side end face of the bonding plate (4-1), and a pair of pointers (4-5) are provided on the other side end face of the bonding plate (4-1).

5. The rapid detection device for the diameter of rod-like parts according to claim 1, characterized in that, The clamp (3-3) has an overall L-shaped structure, and the vertical part of the clamp (3-3) has a certain tilt angle.

6. The rapid detection device for the diameter of rod-like parts according to claim 1, characterized in that, The track frame (3-1) is provided with several friction rods (5), and the moving block (3-2) is movably connected to the friction rods (5).

7. The rapid detection device for the diameter of rod-like parts according to claim 4, characterized in that, The height of the ruler plate (4-4) is higher than the highest point of the top of the clamping rod (3-3).

8. The rapid detection device for the diameter of rod-type parts according to claim 4, characterized in that, The number of pointers (4-5) is two, which are respectively attached to the upper and lower surfaces of the ruler plate (4-4).