Threaded hole structure quality detection method

An internal threaded hole and internal thread technology, which is applied in the field of threaded hole structure quality inspection, can solve the problems of internal thread detection that is not easy to realize, difficult to detect, difficult to observe, etc.

Inactive Publication Date: 2015-10-21
SUZHOU JQS INFO TECH CO LTD
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  • Abstract
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Problems solved by technology

However, the detection of internal thread is not easy to realize. First, the internal thread is located in the

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  • Threaded hole structure quality detection method
  • Threaded hole structure quality detection method
  • Threaded hole structure quality detection method

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Embodiment Construction

[0041] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so it only shows the composition related to the present invention.

[0042] Such as figure 1 , figure 2 with Figure 7 As shown, the first technical solution of the present invention: a method for detecting and calculating the outer diameter 21 and the inner diameter 22 of the internal thread, the lens of the imaging device with the light source is vertically directed towards one end of the internal thread hole, and the opening of the internal thread hole is photographed The image of the first ring of screw teeth is analyzed, and the ring-shaped spot 23 formed by the reflection of the first ring of screw teeth in the image is analyzed, and the inner diameter 22 and outer diameter 21 of the ring-shaped light ...

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Abstract

The invention provides a threaded hole structure quality detection method. A CCD camera and an annular light source are used for quality detection of internal threads. The index items of the detection of the internal threads include external diameter, internal diameter, percentage of thread, number of thread teeth, tooth pitch, tooth depth, and the number of effective teeth. Identifiable ineffective teeth include broken teeth, missing teeth, foreign bodies and burr.

Description

technical field [0001] The invention relates to a method for detecting and calculating the quality of a series of thread indexes, in particular to a method for detecting the quality of a threaded hole structure. Background technique [0002] For internal threads provided on important parts, screws or screws need to be screwed in during installation. The problem that often occurs during the screwing process is that the quality of the internal thread causes the entire internal thread to slip or other damage occurs. Often due to damage to one internal thread, the entire important component will be scrapped and the loss will be large. In order to avoid the above-mentioned technical problems, it is necessary to perform quality inspection on the internal thread and the external thread on the screw in advance. After removing defective products, screw them in again. [0003] Because the screw or the external thread on the screw is located on the outside, it is easy to pre-detect t...

Claims

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Application Information

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IPC IPC(8): G01B11/08G01B11/12G01B11/22G01B11/14G01N21/88
Inventor 任锋海国辉
Owner SUZHOU JQS INFO TECH CO LTD
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