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A large-pitch tapered external thread detection device and method

A detection method and external thread technology, which is applied in the field of large-pitch tapered external thread detection devices, can solve problems such as the inability to accurately obtain large-pitch tapered thread sizes, and achieve online fast and high-precision detection, contour recognition and size conversion algorithms The effect of simplicity and simple structure

Active Publication Date: 2020-10-16
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the defects and deficiencies in the prior art, the present invention provides a large-pitch tapered external thread detection device and method, which overcomes the defect that the large-pitch tapered thread size cannot be accurately obtained through conventional detection methods

Method used

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  • A large-pitch tapered external thread detection device and method
  • A large-pitch tapered external thread detection device and method
  • A large-pitch tapered external thread detection device and method

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Embodiment 1

[0067] Such as figure 1 As shown, the present embodiment provides a large-pitch tapered external thread detection device, including a workpiece fixing assembly 3 and an imaging assembly 2; also includes a detection assembly 1 and a light source assembly 5; the light source assembly 5 is a plane light source, used for orientation The image component 2 provides a light source; the detection component 1 includes a display interface, a data storage system, a thread profile extraction module, and a thread reverse calculation module to extract thread image profiles, calculate thread processing parameters and determine results; specifically, the thread profile extraction module and The thread reverse calculation module is used to process the thread image, measure the size of the thread image and inverse calculation, so as to obtain the thread processing parameters, make judgments on the processing results, and record the detection results in the data storage system.

[0068] Specific...

Embodiment 2

[0070] Such as Figure 1 to Figure 5 As shown, this embodiment also provides a detection method using the large-pitch tapered external thread detection device, including the following steps:

[0071] Step S1: In the display interface of the detection component, input the thread design parameters of the workpiece to be tested and the tool parameters used for thread processing; the thread design parameters include thread major diameter, pitch diameter, thread pitch, tooth profile angle, total thread length and taper, etc.;

[0072] Step S2: placing the workpiece to be measured in the workpiece fixing assembly, adjusting the workpiece fixing assembly so that the light source assembly, the thread of the workpiece to be measured, and the imaging assembly are on the same horizontal line;

[0073] Step S3: The image acquisition component collects the image of the thread of the workpiece to be tested, and transmits it to the detection component;

[0074] Step S4: The detection compon...

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Abstract

The invention discloses a large-pitch conical external thread detection device and a method thereof. The large-pitch conical external thread detection device comprises a workpiece fixing component andan image taking component, also comprises a detection component and a light source component; the light source component is a plane light source and is used for providing a light source for the imagetaking component; the detection component comprises a display interface, a data storage system, a thread profile extraction module and a thread reverse calculation module, and is used for extractinga thread image profile, calculating thread processing parameters and judging results; specifically, the thread profile extraction module and the thread reverse calculation module are used for processing a thread image, measuring and performing inverse calculation on the size of the thread image, thereby obtaining the thread processing parameters, and determining the processing result, at the sametime, the detection result is recorded in a data storage system. The large-pitch conical external thread detection device and the method thereof can achieve the non-contact on-line quick and high-precision detection of the large-pitch conical external thread.

Description

technical field [0001] The invention belongs to the technical field of thread detection, and in particular relates to a large-pitch tapered external thread detection device and method. Background technique [0002] At present, the methods of thread detection mainly include contact and non-contact detection methods. The contact detection methods mainly include comprehensive measurement methods (such as gauge measurement) and single measurement methods (such as three-needle measurement); non-contact methods are mainly The thread image information is used for detection, including tool microscope method and machine vision detection method. With the development of thread detection technology, the degree of automation of thread detection is getting higher and higher. The traditional external thread contact detection method has measuring tools that are easy to wear and low work efficiency, and it is difficult to meet the requirements of large-scale and online detection; while machi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/24
CPCG01B11/2416
Inventor 董萌萌吴智峰牟培英周春王亚波朱宁兰菲王渤
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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