A vision measurement machine is a precision instrument that integrates optical, mechanical, electronic, and computer image processing technologies. It is mainly used for non-contact measurement and geometric parameter analysis of objects. Here is a detailed introduction:
It uses digital image technology. First, it takes an image of the object through an optical imaging system. The image is then acquired by an optical coupler device and processed by measurement software. Through geometric calculations, it can realize the measurement of the object's size, shape, position, angle, and other parameters, and display the measurement results on the computer screen.
- Optical System: Includes lenses, light sources, etc. The lenses are used to magnify the object to be measured, and the light sources are used to illuminate the object to ensure that the camera can collect clear image features. For example, some vision measurement machines are equipped with 6.5-fold electric coaxial zoom lenses to achieve precise automatic zooming.
- Camera System: Usually a CCD or CMOS camera, which is used to collect the image information of the object. High-resolution cameras can ensure the clarity and accuracy of the image, such as the 2-megapixel global network digital CCD camera used in some models.
- Mechanical Structure: Such as the moving bridge structure or the small gantry moving structure, which is used to support the optical system and the camera system and can move the object or the measuring head to achieve multi-position measurement. Some high-precision vision measurement machines use "00" - grade marble bases and columns to ensure stability and rigidity.
- Control System and Software: The control system is used to control the movement of the mechanical structure and the operation of the camera, etc. The measurement software is used to process the collected images, perform geometric calculations, and output measurement reports. For example, some measurement software has functions such as automatic pixel calibration and can generate reports in various formats.
- High Precision: It can achieve high-precision measurement, with an error usually in the range of a few microns to tens of microns, which can meet the measurement requirements of high-precision manufacturing.
- High Efficiency: It can quickly measure and analyze a large number of workpieces, greatly improving production efficiency.
- Automation: It has automated measurement and data processing functions, reducing human intervention and operational errors, and improving the accuracy and reliability of measurement.
- Non-contact Measurement: It will not cause any damage to the workpiece, and is suitable for measuring various materials, including soft, fragile or easily damaged workpieces.
It is widely used in industries such as mobile phones, electronics, molds, injection molding, automobiles, and medical treatment, and is suitable for two-dimensional plane measurement and some three-dimensional measurement occasions. For example, in the mobile phone industry, it can measure the flatness, warpage, thickness, and curved surface of mobile phone glass, touch screens, and mobile phone cases; in the automotive industry, it can be used to measure the size and shape of automotive parts.
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