Novel internal thread go-no go gauge

Abstract

The utility model discloses a novel internal thread go-no go gauge, comprising an intermediate diameter measuring member and a small diameter measuring member, the intermediate diameter measuring member comprises an intermediate diameter go end and an intermediate diameter no-go end, and the intermediate diameter go end and the intermediate diameter no-go end are located at two ends of a gauge body; the small-diameter measuring piece comprises a small-diameter go end and a small-diameter no-go end, the small-diameter measuring piece can be fixed on the gauge body, and through the design of adding the small-diameter go end and the small-diameter no-go end, the pitch diameter and the small diameter of the internal threads can be comprehensively detected at the same time, so that not only is the detection comprehensiveness improved, but also the qualification of each internal thread on a plurality of key dimensions is ensured, and the detection accuracy is improved. Therefore, the quality problem caused by inconsistent small-diameter size is effectively prevented. In addition, by optimizing the structural design of the go-no go gauge, error sources in the detection process are reduced, and the detection result is more accurate and reliable. The high-precision detection means not only can meet the strict requirements of the modern manufacturing industry on the threaded connecting piece, but also can effectively reduce the rejection rate caused by detection errors and improve the production efficiency.

Description

Technical Field

[0001] The utility model belongs to the field of measurement technology, in particular to a novel internal thread go / no-go gauge. Background Art

[0002] In industrial production and engineering applications, threaded connectors are widely used as important fastening components in various mechanical equipment and building structures. To ensure the safe operation of these equipment and the stability of buildings, stringent requirements are placed on the processing accuracy of threaded connectors. The dimensional accuracy of the internal thread directly affects the assembly effect and service life, making its inspection particularly important.

[0003] Traditional go / no-go gauges for internal threads are a commonly used inspection tool, primarily used to check whether the pitch diameter of an internal thread meets standards. Specifically, the go / no-go gauge verifies the maximum material dimension (MMC) of the internal thread, determining whether it can be screwed in smoothly at its maximum thread diameter. The no-go gauge verifies the minimum material dimension (LMC), determining whether it can prevent rotation at its minimum thread diameter. While this method effectively verifies the pitch diameter of internal threads, it has several significant shortcomings in practical applications. First, traditional go / no-go gauges cannot directly detect the minor diameter of the internal thread. The minor diameter refers to the diameter at the root of the thread. For internal threads, the minor diameter directly affects the strength and durability of the thread. If the minor diameter is too small or irregularly shaped, it can easily damage the thread during use, or even prevent it from fitting properly. However, due to structural limitations, traditional go / no-go gauges cannot directly detect the minor diameter. This means that even if an internal thread passes the pitch diameter test, the minor diameter may still be off. Second, this single-pitch diameter inspection method can easily lead to unqualified products being missed. During actual production, internal thread minor diameters may deviate due to factors such as processing technology and equipment accuracy. If these deviations are not promptly detected and corrected, they can directly impact the quality and safety of the final product. For example, in critical applications such as automotive engines and aerospace parts, dimensional deviations in internal threads can lead to serious safety incidents, resulting in immeasurable losses for both the company and the user.

[0004] Therefore, existing internal thread go / no-go gauges are unable to comprehensively and accurately assess the overall quality of internal threads, particularly when it comes to detecting the minor diameter. This not only increases the difficulty of quality control but also impacts companies' production efficiency and market competitiveness. To address this issue, there is an urgent need to develop a new inspection tool that can simultaneously detect both the pitch and minor diameters of internal threads. This would improve the comprehensiveness and accuracy of inspections, thereby ensuring product quality and corporate reputation. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a novel internal thread go / no-go gauge, which realizes the simultaneous detection of the middle diameter and minor diameter of the internal thread by adding a small-diameter go end and a small-diameter no-go end.

[0006] In order to solve the above problems, the technical solution adopted by the present invention is as follows: a new internal thread go / no-go gauge, comprising:

[0007] A mid-diameter measuring piece, comprising a mid-diameter through end and a mid-diameter stop end, wherein the mid-diameter through end and the mid-diameter stop end are located at two ends of the gauge body;

[0008] A small-diameter measuring piece includes a small-diameter through end and a small-diameter stop end, and the small-diameter measuring piece can be fixed to the gauge body.

[0009] Compared to the prior art, the beneficial effect of the present invention is that by adding a small-diameter through-end and a small-diameter stop-end design, the mean diameter and minor diameter of the internal thread can be fully inspected simultaneously, which not only improves the comprehensiveness of the inspection but also ensures the compliance of each internal thread in multiple key dimensions, thereby effectively preventing quality problems caused by minor diameter discrepancies. In addition, by optimizing the structural design of the go / no-go gauge, the sources of error in the inspection process are reduced, making the inspection results more accurate and reliable. This high-precision inspection method not only meets the strict requirements of modern manufacturing for threaded connectors, but also effectively reduces the scrap rate caused by inspection errors and improves production efficiency.

[0010] The above-mentioned go / no-go gauge and the small-diameter measuring piece adopt a PIN gauge.

[0011] The go / no-go gauge has a through hole on its body, and the small-diameter measuring piece passes through the through hole and is fixed in the middle of the gauge body.

[0012] The above-mentioned go / no-go gauge has a slot on the gauge body, and a buckle is provided in the middle of the small-diameter measuring piece. The buckle can be engaged with the slot to fix the small-diameter measuring piece to the middle-diameter measuring piece.

[0013] In the above-mentioned go / no-go gauge, the middle diameter through end and the middle diameter stop end are movably connected to the gauge body.

[0014] In the above-mentioned go / no-go gauge, the middle diameter through end, the middle diameter stop end, the small diameter through end and the small diameter stop end are all made of wear-resistant materials.

[0015] The surfaces of the above-mentioned go / no-go gauge, the middle diameter through end, the middle diameter stop end, the small diameter through end and the small diameter stop end are all coated with an anti-rust coating.

[0016] The above-mentioned go / no-go gauge has markings on the middle diameter through end, the middle diameter stop end, the small diameter through end and the small diameter stop end, for distinguishing different detection functions and specifications.

[0017] The above-mentioned go / no-go gauge, the middle diameter through end, the middle diameter stop end, the small diameter through end and the small diameter stop end can all be integrated with an automated testing system to achieve fast and efficient batch testing.

[0018] The above-mentioned go / no-go gauge, the middle diameter through end, the middle diameter stop end, the small diameter through end and the small diameter stop end are all made by high-precision manufacturing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The structure diagram of the go / no-go gauge in the embodiment of the utility model is shown as follows: Figure 1 ;

[0020] Figure 2 The structure diagram of the go / no-go gauge in the embodiment of the utility model is shown as follows: Figure 2

[0021] Description of the accompanying numbers: 100 middle diameter measuring piece, 110 middle diameter through end, 120 middle diameter stop end, 200 gauge body, 300 small diameter measuring piece, 310 small diameter through end, 320 small diameter stop end, 400 through hole. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below. Figures 1 to 2 The embodiment of the present utility model provides a novel internal thread go / no-go gauge, comprising: a mid-diameter measuring piece 100 and a minor-diameter measuring piece 300. The mid-diameter measuring piece 100 includes a mid-diameter through end 110 and a mid-diameter stop end 120, which are located at opposite ends of a gauge body 200; the minor-diameter measuring piece 300 includes a minor-diameter through end 310 and a minor-diameter stop end 320, which can be fixed to the gauge body 200. By adding the minor-diameter through end 310 and the minor-diameter stop end 320, the mid-diameter and minor-diameter of the internal thread can be comprehensively inspected simultaneously, which not only improves the comprehensiveness of the inspection but also ensures the conformity of each internal thread in multiple key dimensions, thereby effectively preventing quality problems caused by minor-diameter size discrepancies. In addition, by optimizing the structural design of the go / no-go gauge, the sources of error in the inspection process are reduced, making the inspection results more accurate and reliable. This high-precision detection method not only meets the strict requirements of modern manufacturing for threaded connections, but also effectively reduces the scrap rate caused by detection errors and improves production efficiency.

[0023] Furthermore, the present invention achieves a comprehensive inspection of the middle diameter and the minor diameter of the internal thread by introducing the small diameter measuring piece 300, ensuring the qualification of the internal thread in multiple key dimensions, improving the comprehensiveness and accuracy of the inspection, and effectively preventing quality problems caused by minor diameter size discrepancies. Of course, the present invention does not limit the specific connection method of the small diameter measuring piece 300 and the middle diameter measuring piece 100. Preferably, refer to Figure 2, a through hole 400 is provided on the gauge body 200, and the small diameter measuring piece 300 passes through the through hole 400 and is fixed in the middle of the gauge body 200. Of course, the small diameter measuring piece 300 and the gauge body 200 can also be fixed by snapping. Specifically, a slot is provided on the gauge body 200, and a buckle is provided in the middle of the small diameter measuring piece 300. The buckle can be snapped into the slot to fix the small diameter measuring piece 300 to the gauge body 200. Among them, the structure of the middle diameter through end 110 is the same as that of the traditional go / no-go gauge, which is used to detect the maximum size of the middle diameter of the internal thread, and the middle diameter stop end 120 is the same as the traditional go / no-go gauge, which is used to verify whether the minimum size of the middle diameter of the internal thread is qualified; the small diameter measuring piece 300 adopts a PIN gauge, and the small diameter through end 310 and the small diameter stop end 320 are respectively used to measure the pass / no-pass condition of the small diameter of the internal thread. Of course, the utility model does not limit the specific structure of the middle diameter through end 110, the middle diameter stop end 120, the small diameter through end 310 and the small diameter stop end 320. Preferably, refer to Figure 1 The middle diameter through end 110 and the middle diameter stop end 120 are provided with threads, and the small diameter through end 310 and the small diameter stop end 320 are provided with cylinders. Furthermore, the detection order of the middle diameter through end 110, the middle diameter stop end 120, the small diameter through end 310 and the small diameter stop end 320 is not fixed. Of course, the present invention does not limit the specific connection method of the middle diameter through end 110 and the middle diameter stop end 120 with the gauge body 200. Preferably, the middle diameter through end 110 and the middle diameter stop end 120 are movably connected to the gauge body 200, and the small diameter through end 310 and the small diameter stop end 320 can also be movably connected. Through modular design, the middle diameter through end 110, the middle diameter stop end 120, the small diameter through end 310 and the small diameter stop end 320 can be independently replaced and adjusted to meet the requirements of different thread types and sizes. This allows the same set of go / no-go gauges to be used for testing a variety of thread specifications, eliminating the need to purchase and maintain multiple sets of specialized tools and reducing production costs. Furthermore, in high-variety, low-batch production environments, the modular design allows operators to quickly change and adjust testing tools to meet the testing needs of different products, improving production efficiency. More importantly, the modular design reduces the need for multiple specialized go / no-go gauges, allowing companies to stock only a small number of standard modules to meet a wide range of testing tasks. This not only reduces inventory space but also reduces inventory management and maintenance costs.

[0024] Furthermore, the mid-diameter through end 110, mid-diameter stop end 120, small-diameter through end 310, and small-diameter stop end 320 are all made of wear-resistant materials. The use of wear-resistant materials ensures the durability and stability of each measuring end during frequent use, reduces detection errors caused by wear, and improves the reliability and service life of the detection tool. Furthermore, the surfaces of the mid-diameter through end 110, mid-diameter stop end 120, small-diameter through end 310, and small-diameter stop end 320 are all coated with an anti-rust coating. The anti-rust coating can effectively prevent rust and corrosion on the tool surface, ensuring detection accuracy during long-term use and improving the reliability and service life of the detection tool. Furthermore, the mid-diameter through end 110, mid-diameter stop end 120, small-diameter through end 310, and small-diameter stop end 320 are all equipped with labels to distinguish different detection functions and specifications. The label design enables operators to quickly and accurately identify different detection functions and specifications, reducing misoperation and improving detection efficiency and accuracy. Furthermore, the middle diameter through end 110, the middle diameter stop end 120, the small diameter through end 310, and the small diameter stop end 320 can all be integrated with an automated detection system to achieve fast and efficient batch detection. The integration with the automated detection system enables the go / no-go gauge to achieve fast and efficient batch detection, support automated production and detection, and significantly improve production efficiency and detection accuracy. Of course, the present invention does not limit the specific composition of the automated detection system. The automated detection system specifically includes but is not limited to seamless connection with automatic loading and unloading devices, automatic detection platforms, data acquisition systems, and control systems to achieve fast and efficient batch detection, support automated production and detection, and improve production efficiency and detection accuracy. Specifically, the internal thread go / no-go gauge can be installed on the automatic detection platform, and the go / no-go gauge can be automatically screwed in and out by a motor drive or pneumatic device to complete the detection action. Furthermore, the middle diameter through end 110, the middle diameter stop end 120, the small diameter through end 310 and the small diameter stop end 320 are all made using a high-precision manufacturing process. Of course, the present invention is not limited to the specific type of high-precision manufacturing process. The high-precision manufacturing process specifically includes but is not limited to advanced manufacturing technologies such as precision CNC machining, laser machining, and electrospark machining to ensure its dimensional accuracy and stability, reduce errors in the detection process, and improve detection accuracy and reliability.

[0025] It should be noted that in the description of the present invention, if there are any descriptions of directions, such as up, down, front, back, left, right, etc., the directions or positional relationships indicated are all based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed or operated in a specific direction, and cannot be understood as a limitation on the present invention.

[0026] In the description of this utility model, "several" means one or more, "more" means two or more, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. If there are descriptions of "first," "second," and so on, these are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A new type of internal thread go / no-go gauge, characterized in that: include: A middle diameter measuring piece (100), the middle diameter measuring piece (100) comprising a middle diameter through end (110) and a middle diameter stop end (120), the middle diameter through end (110) and the middle diameter stop end (120) being located at two ends of a gauge body (200); A small-diameter measuring piece (300) includes a small-diameter through end (310) and a small-diameter stop end (320), and the small-diameter measuring piece (300) can be fixed to the gauge body (200).

2. The go / no-go gauge according to claim 1, characterized in that: The small diameter measuring piece (300) adopts a PIN gauge.

3. The go / no-go gauge according to claim 1, characterized in that: The gauge body (200) is provided with a through hole (400), and the small-diameter measuring piece (300) passes through the through hole (400) and is fixed in the middle of the gauge body (200).

4. The go / no-go gauge according to claim 1, characterized in that: The gauge body (200) is provided with a slot, and the small-diameter measuring piece (300) is provided with a buckle in the middle, and the buckle can be engaged with the slot to fix the small-diameter measuring piece (300) to the gauge body (200).

5. The go / no-go gauge according to claim 1, characterized in that: The middle diameter through end (110) and the middle diameter stop end (120) are movably connected to the gauge body (200).

6. The go / no-go gauge according to claim 1, characterized in that: The middle diameter through end (110), the middle diameter stop end (120), the small diameter through end (310) and the small diameter stop end (320) are all made of wear-resistant material.

7. The go / no-go gauge according to claim 1, characterized in that: The surfaces of the middle diameter through end (110), the middle diameter stop end (120), the small diameter through end (310) and the small diameter stop end (320) are all coated with an anti-rust coating.

8. The go / no-go gauge according to claim 1, characterized in that: The middle diameter through end (110), the middle diameter stop end (120), the small diameter through end (310), and the small diameter stop end (320) are all provided with markings for distinguishing different detection functions and specifications.

9. The go / no-go gauge according to claim 1, characterized in that: The medium-diameter through end (110), the medium-diameter stop end (120), the small-diameter through end (310), and the small-diameter stop end (320) can all be integrated with an automated detection system to achieve rapid and efficient batch detection.

10. The go / no-go gauge according to claim 1, characterized in that: The medium-diameter through end (110), the medium-diameter stop end (120), the small-diameter through end (310), and the small-diameter stop end (320) are all manufactured using a high-precision manufacturing process.

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