How to ensure the accuracy and efficiency of the image measuring products?
Image measuring instrument is a fast three-dimensional detecting device that replaces the traditional three-coordinate measuring instrument. It features no need to actually touch the product, and achieve accurate geometric measurement by grasping the boundary features and surface of the product. But after having a good image measuring instrument, how to ensure the accuracy and efficiency of the measuring products?
1 Ensure that the image measuring instrument is in the effective calibration period: the image measuring device will have the indicated measurement uncertainty at the factory. This uncertainty represents the range of error that may occur when actually measuring the product, but after the device is used for a period of time. Whether there is enough precision to measure the product, which requires an annual calibration certificate to guarantee. Usually, the image measuring instrument is the same as the traditional three-coordinate measuring instrument. It is an annual precision calibration method. It is verified by the manufacturer of the equipment or an authorized calibration mechanism using standard parts that can be traced back to international standards. Whether the measurement accuracy is up to standard depends on the specific value of the accuracy report. Of course, you can also ask the third-party verification agency to perform the accuracy verification and OEM, but this process is not necessary because the return accuracy of the device cannot be guaranteed.
2 Familiar with part drawing and measurement requirements: The program of the image measuring instrument is programmed in the same way as the three coordinates. A three-dimensional coordinate system can be established and the geometric tolerance can be evaluated on the coordinate reference. Therefore, in combination with the measurement requirements and the reference position, the parts are placed and the size is measured as much as possible in one visit position, thereby improving the detection efficiency. For the feature boundary or plane that becomes the reference, if there are good boundary conditions and flatness, the measurement position and repeatability of the other features will be well protected. In addition, the programmer of the imager needs to be familiar with the boundary position of the corresponding product drawing to prevent the wrong boundary.
3 Positioning in preparation before programming: In order to ensure the batch use of the measurement program, in the absence of the reference, it is necessary to first position the workpiece, find stable features, and find the origin, the axial and the zero high point respectively. Documenting and ensuring consistency is a must for implementing batch measurements.
4 Image measurement experience accumulation: For different product boundaries, it is necessary to match different light sources and light intensity, such as contour edge, weak edge, chamfer, etc., the measurement personnel of the image measuring instrument need to continuously accumulate experience.
5 Optimization of image measurement program: According to the measurement needs, according to the measurement magnification, plan the measurement route reasonably, so that the measurement platform can complete the measurement according to the arrangement order or path or clockwise or counterclockwise, and compress the single measurement time as much as possible.
Image measuring instrument is a fast three-dimensional detecting device that replaces the traditional three-coordinate measuring instrument. It features no need to actually touch the product, and achieve accurate geometric measurement by grasping the boundary features and surface of the product. But after having a good image measuring instrument, how to ensure the accuracy and efficiency of the measuring products?
1 Ensure that the image measuring instrument is in the effective calibration period: the image measuring device will have the indicated measurement uncertainty at the factory. This uncertainty represents the range of error that may occur when actually measuring the product, but after the device is used for a period of time. Whether there is enough precision to measure the product, which requires an annual calibration certificate to guarantee. Usually, the image measuring instrument is the same as the traditional three-coordinate measuring instrument. It is an annual precision calibration method. It is verified by the manufacturer of the equipment or an authorized calibration mechanism using standard parts that can be traced back to international standards. Whether the measurement accuracy is up to standard depends on the specific value of the accuracy report. Of course, you can also ask the third-party verification agency to perform the accuracy verification and OEM, but this process is not necessary because the return accuracy of the device cannot be guaranteed.
2 Familiar with part drawing and measurement requirements: The program of the image measuring instrument is programmed in the same way as the three coordinates. A three-dimensional coordinate system can be established and the geometric tolerance can be evaluated on the coordinate reference. Therefore, in combination with the measurement requirements and the reference position, the parts are placed and the size is measured as much as possible in one visit position, thereby improving the detection efficiency. For the feature boundary or plane that becomes the reference, if there are good boundary conditions and flatness, the measurement position and repeatability of the other features will be well protected. In addition, the programmer of the imager needs to be familiar with the boundary position of the corresponding product drawing to prevent the wrong boundary.
3 Positioning in preparation before programming: In order to ensure the batch use of the measurement program, in the absence of the reference, it is necessary to first position the workpiece, find stable features, and find the origin, the axial and the zero high point respectively. Documenting and ensuring consistency is a must for implementing batch measurements.
4 Image measurement experience accumulation: For different product boundaries, it is necessary to match different light sources and light intensity, such as contour edge, weak edge, chamfer, etc., the measurement personnel of the image measuring instrument need to continuously accumulate experience.
5 Optimization of image measurement program: According to the measurement needs, according to the measurement magnification, plan the measurement route reasonably, so that the measurement platform can complete the measurement according to the arrangement order or path or clockwise or counterclockwise, and compress the single measurement time as much as possible.
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