Machine vision detection device and method for surface defects of automobile engine turbine casing
A technology of machine vision inspection and automobile engine, which is applied in the direction of measuring devices, optical testing defects/defects, instruments, etc., can solve problems such as defects, achieve the effect of reducing labor costs in the industry, overcoming detection accuracy and low efficiency
Active Publication Date: 2021-02-19
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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[0005] In order to solve the defects of low detection efficiency, high labor intensity of workers, and particularly prone to false detection in the prior art, the present invention provides a machine vision detection device and method for surface defects of the turbine shell of an automobile engine, which effectively solves the problem of complex-shaped automobiles. The problem of rapid and accurate detection of surface defects of engine turbine shell products, the detection device is simple in structure, flexible, easy to use, and highly automated
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[0052] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0053] Such as figure 1 As shown, the first detection station in this embodiment performs the functions of the first and second detection modules, and the system includes:
[0054] Tested turbine shell workpiece 101: The tested turbine shell workpiece is an automobile engine turbine shell. The detection area includes the air outlet flange surface, the end surface of the middle casing and the surface of the turbine curve hole. The air outlet flange surface and the end surface of the middle casing are circular plane areas. The turbine curve hole is cylindrical;
[0055] Low-angle light source installation mechanism 102: used to install two low-angle light sources 104, and can move along the linear motion mechanism 103;
[0056] Linear motion mechanism 103: used to drive two low-angle light sources 104 to close or separate on both sides of the measured t...
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The invention discloses a machine vision detection device and method for surface defects of a turbine housing of an automobile engine and belongs to the field of industrial automatic detection. The machine vision detection device comprises an industrial video camera, a combined light source system, a motion workbench, a master control system and a display, during detection, a turbine housing workpiece is located and mounted on a one-dimensional motion workbench by virtue of a special fixture, the workpiece linearly moves to each detection station along the workbench, the combined light sourcesystem respectively adopts bright-field and dark-field lighting modes for lighting the workpiece, the industrial video camera acquires an image of the surface defects of the workpiece and transmits the image to the master control system, and the master control system calls different defect detection modules, determines positions, types and measures of the surface defects and gives out a qualification judgement result. The machine vision detection device and method which are disclosed by the invention have the advantages that automatic detection for surface defects of an automobile engine turbine housing product is realized, detection accuracy and efficiency are improved, and labor cost of the industry is greatly reduced.
Description
technical field [0001] The invention belongs to the field of industrial automatic detection, in particular to a machine vision detection device and method for surface defects of a turbine shell of an automobile engine. Background technique [0002] In recent years, with the introduction of manufacturing national strategies such as Germany's "Industry 4.0" and my country's "Made in China 2025", countries around the world have put forward higher and higher requirements for product quality and the level of intelligence in the manufacturing process. Manufacturing market competition It is also becoming more intense. In order to ensure the quality and economic benefits of products, advanced control and optimal control have been applied to industrial processes. [0003] As an important pillar industry of my country's national economy, the automobile manufacturing industry has always had the most urgent demand for intelligent manufacturing, and it is also the most widely used field ...
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IPC IPC(8): G01N21/88
CPCG01N21/8806G01N21/8851G01N2021/8887
Inventor 余厚云李克斌周申江叶剑杰江海勇
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS