Novel internal thread go-no go gauge

By designing a new type of internal thread go/no-go gauge with mean and minor diameter measuring parts, comprehensive detection of the mean and minor diameters of internal threads is achieved, solving the problem that traditional tools cannot accurately detect, improving the comprehensiveness and accuracy of detection, reducing the scrap rate, adapting to various thread specifications, and supporting automated detection.

CN223376538UActive Publication Date: 2025-09-23KWUNHING MACHINERY & ELECTRONICS
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Patent Information

Application Number
CN202422870145.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-22
Publication Date
2025-09-23
Estimated Expiration
2034-11-22

AI Technical Summary

Technical Problem

Traditional internal thread go/no-go gauges are unable to comprehensively and accurately detect the mean and minor diameters of internal threads, especially in terms of minor diameter detection, which leads to increased difficulty in quality control and safety hazards.

Method used

A new internal thread go/no-go gauge with both middle and minor diameter measuring parts has been designed. It adds a minor diameter go/no-go end and a minor diameter stop end to enable simultaneous detection of the middle and minor diameters of internal threads. It also adapts to different thread types and sizes through modular design and supports integration with automated detection systems.

Benefits of technology

It improves the comprehensiveness and accuracy of detection, ensures the qualification of internal threads in multiple key dimensions, reduces the scrap rate, and improves production efficiency and detection reliability.

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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.
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