Micro-duplicate gear tooth break defect detecting method based on gear center distance curves

A dual-gear and curve analysis technology, which is applied in the direction of material analysis, image analysis, optical test flaws/defects, etc., can solve the problems of poor adaptability and low efficiency

Inactive Publication Date: 2018-03-13
ZHEJIANG UNIV
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Problems solved by technology

[0007] Aiming at the problems of poor adaptability and low efficiency of existing visual measurement methods for broken teeth defects of miniature double-linked injection molding gears, the present invention proposes a method for detecting broken teeth defects of miniature double-linked gears based on the analysis of tooth center distance curves, which solves the problem of Insufficient visual detection of miniature double-injection-molded gears described in the background technology can quickly and accurately detect broken teeth and damage defects

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  • Micro-duplicate gear tooth break defect detecting method based on gear center distance curves
  • Micro-duplicate gear tooth break defect detecting method based on gear center distance curves
  • Micro-duplicate gear tooth break defect detecting method based on gear center distance curves

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Embodiment Construction

[0082] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described below in conjunction with the accompanying drawings.

[0083] Such as image 3 Shown, according to the embodiment that the summary of the invention implements method and implementation process thereof are as follows:

[0084] A number of miniature double gears with a modulus of 0.5 mm are used as the experimental objects. The following is an example of a 46 (10) tooth double gear with a broken tooth defect in each of the large and small gears. The implementation process specifically includes the following:

[0085] Step 1): If figure 1 As shown, in the specific implementation, a miniature dual injection molding gear visual defect detection system is constructed. The system includes an industrial camera 1, a backlight 2, a workbench 3, a camera position adjustment bracket 4 and a PC terminal 5, and the test system is built a...

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Abstract

The invention discloses a micro-duplicate gear tooth break defect detecting method based on gear center distance curves. The method includes the steps: dividing large and small gear threshold values of gear images by the aid of a rapid neighborhood trough analysis mode; detecting gear profile edges by the aid of a radial edge scanning mode; calculating distances among gear image edge points and agear mass center to obtain distance curves from gear profile points to the mass center. Tooth break detection of the gear images is converted and quantized into analysis of the gear center distance curves after Gaussian smoothing. The method can detect whether the micro-duplicate injection molding gear exists defects such as tooth break and breakage or not, defect positions are marked under the defect condition, and tooth break and breakage defects can be rapidly and accurately detected.

Description

technical field [0001] The invention is aimed at the miniature duplex injection-molded gear in the precision instrument, and in particular relates to a detection method for the broken tooth defect of the micro duplex gear based on the analysis of the tooth center distance curve. Background technique [0002] The miniature double-injection gear has the advantages of low cost and low transmission noise, and is widely used in various precision instruments and micro-electromechanical products. Broken teeth defects are easy to occur during the forming process of gears, resulting in transmission noise, wear and efficiency reduction. Therefore, the detection of broken teeth of plastic gears is an important link to ensure the quality of related products. [0003] Affected by its geometric size and mechanical properties, the detection difficulty and defect probability of micro-double injection-molded gears are higher than those of medium-modulus single-layer gears. Traditional conta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/95G01N21/88G06T5/00G06T7/00G06T7/13G06T7/136G06T7/41
CPCG01N21/8851G01N21/9515G01N2021/8887G06T5/002G06T7/0008G06T7/13G06T7/136G06T7/41G06T2207/20192G06T2207/30164
Inventor 赵昕玥王宏远何再兴张树有
Owner ZHEJIANG UNIV
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