Plate type open thread gauge for external thread detection and use method thereof

Abstract

The invention provides a plate type open thread gauge for external thread detection and a use method thereof. The plate type open thread gauge comprises a body and a detection hole, wherein the body is a plate with thickness, the body is provided with the detection hole, the detection hole has a set of parallel planes, the set of parallel planes are respectively provided with straight threads, andthe straight threads are matched with external threads. Compared with the prior art, the plate type open thread gauge is advantaged in that the structure is simple, detection is fast and convenient,proofreading is easy, the plate type open thread gauge is wear resistant, the service life is long, detection efficiency is high, threads of the plate type open thread gauge can be measured through aprojector or a microscope, the cause of thread gauge failure is discovered and analyzed, and excellent popularization and application values are realized. The use method of the plate type open threadgauge is simple and convenient, straight threads can be reprocessed to detect external threads of larger diameter workpieces after the straight threads become less precise due to overuse, and the economic value is excellent.

Description

technical field [0001] The invention relates to the technical field of measuring tools and inspection tools, in particular to a plate-type open thread gauge for testing tungsten-molybdenum external threads and a method for using the same. Background technique [0002] The processing of external threads is a common processing method in mechanical processing, and whether the processed external threads are qualified or not needs to be tested. At present, a set of commercially available thread gauges (composed of a go gauge and a stop gauge) are generally used as tools for detecting external threads. Such as figure 1 As shown, the commercially available thread gauge is generally circular, with internal threads on the inner hole, and the material is generally tool steel with low hardness (generally HRC58-65). Because there are many specifications of external threads, only common specifications can be bought in the market, but in actual production, threads of special specificati...

AI Technical Summary

Problems solved by technology

Tungsten-molybdenum parts are generally used in high-temperature, wear-resistant and harsh working conditions. Therefore, most of the designed thread specifications are special sizes. The detection of these external threads has become a difficult point in the detection of tungsten-molybdenum threads. Moreover, as a connector for high-temperature work, threaded connection is a commonly used connection method, which leads to a large number of connectors with tungsten-molybdenum external threads. On the one hand, because tool steel is mostly used as its material, its wear resistance is poor, and the service life of the test is short. When it is used to test tungsten and molybdenum external threads, generally every 300-400 products are tested, the thread gauge is scrapped due to wear and tear.

[0004] In addition, when commercially available circular external thread gauges are used for testing, since the thread sections of workpieces such as tungsten and molybdenum must pass through the through gauge or stop at the stop gauge every time the product is tested, the wear of the thread gauge is relatively serious. It is necessary to confirm whether the thread gauge is qualified. Since the thread of the circular external thread gauge is circular, the tolerance size of the thread cannot be measured with a projection measuring instrument or a microscope, so it is not conducive to product quality control and quality improvement

[0005] Furthermore, commercially available thread gauges cannot be reused after the thread is scrapped due to wear and tear. Therefore, although its price is cheap, when the amount of use is large, the waste is also serious.

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