Presumably, many people have some basic understanding of the visual inspection system. The visual inspection system uses industrial cameras to convert the detected objects into image signals, and converts them into digital signals according to the pixel distribution, brightness and color information, and then makes effective judgment on the object. So what problems has the visual inspection system helped enterprises solve and what irreplaceable advantages are there in the actual production process?
Due to the limitation of physical conditions of human eyes, machines have obvious advantages in accuracy. Even if the human eye relies on a magnifying glass or microscope to detect the product, the machine will still be more accurate, because its accuracy can reach one thousandth of an inch.
The machine can repeat the test in the same way without getting tired. On the contrary, affected by physiological and psychological factors, the human eye will feel slightly different every time it detects the product, even if the product is identical.
Machines can detect products faster. Especially when detecting high-speed moving objects, such as production lines, machines can improve production efficiency.
There is also a fatal defect in human eye detection, which is the subjectivity brought about by emotions. The detection results will change with the mood of workers, but the machine does not have joy, anger, sadness and joy, so the detection results are naturally very considerable and reliable.
Because machines are faster than people, an automatic detection machine can take on several people's characters. And the machine does not need to stop, will not get sick, can work continuously, so can greatly improve the production efficiency.
For some types of measurement items, the original measurement method is to need plug gauge or fixture to measure the product. However, machine vision can achieve non-destructive measurement, the product can be placed in a place to measure the size of the image.
The application scope of machine vision includes safety system, surface detection, positioning, two-dimensional measurement comparison, two-dimensional code recognition, two-dimensional position positioning, two-dimensional object recognition, optical character recognition, robot vision, traffic monitoring and driving assistance system, three-dimensional measurement comparison, three-dimensional object positioning, three-dimensional object recognition, feature detection, integrity detection, color detection, one-dimensional Code recognition, printing detection and so on. Due to the wide application of machine vision, more and more enterprises use machine vision inspection equipment to replace the traditional manual detection. The detection functions include the following aspects:
Vertical detection function
Detection, detection of hole shape, inspection of cross hole, inspection of inner and outer hole, detection of hole shape, hole diameter.
Level detection function
Multi section width detection, multi section height detection, multi gasket, less gasket detection, solder joint height detection, etc.
Horizontal screw tooth detection function
The results showed that the shape of the bottom, the inner and outer diameter of the screw teeth, the distance between the teeth and the angle of the teeth, the perpendicularity, the bad rubbing and the quality of the teeth were detected.
Head detection function
Detection of broken needle, groove depth, multi segment width, head height, step height, head outer diameter, head thickness, head crack, etc.
Pinhole eccentricity detection, rod length detection, tooth outer diameter detection, tooth bottom diameter detection, pitch detection, oblique tooth detection, inner hole diameter detection, inner hole impurity detection, solder joint size and number detection, tooth detection, step size detection, tooth injury detection, hole burr detection, and so on.
Visual inspection system can reduce manpower, save labor costs, and greatly reduce human detection errors, so as to improve work efficiency, improve product delivery quality, and enhance the competitiveness of products. If the visual inspection system is further applied to the production control process, the production line can not only reduce the waste of raw materials, but also effectively control the production time.