How to ensure the measurement accuracy and improve the detection efficiency when programming the image measuring instrument

The imager manufacturer is a fast 3D detection device, replacing the traditional CMM. Its feature is that it does not need to actually contact with the product, and it can achieve accurate geometric measurement by grasping the boundary features and surfaces of the product. But how to ensure the accuracy and efficiency of measuring products after having a good image Measuring Instrument?

1. Ensure that the image measuring instrument is in the effective calibration cycle: the image measuring equipment will have obvious measurement uncertainty when leaving the factory. This uncertainty represents the range of errors that may occur when actually measuring the product, but after the equipment has been used for a period of time. Whether the product can still be measured with sufficient accuracy requires an annual calibration certificate. Generally, image measuring instruments are the same as traditional three coordinate measuring instruments. This is an annual precision calibration method. It is verified and reported by equipment manufacturers or authorized calibration organizations using standard components traceable to international standards. Whether the measurement accuracy reaches the standard depends on the specific value of the accuracy report. Of course, you can also ask a third-party verification agency to perform accuracy verification and OEM, but this process is not necessary because the return accuracy of the equipment cannot be guaranteed.

2. Be familiar with the 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 geometric tolerances can be evaluated on coordinate references. Therefore, in combination with measurement requirements and reference locations, place components and measure as many dimensions as possible at one access location to improve detection efficiency. For the feature boundary or plane that becomes the reference, if there are good boundary conditions and flatness, the measurement location and repeatability of 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. Preparation and positioning before programming: In order to ensure that the portable magnetic particle flaw detector can use the measurement program in batches, without reference, first position the workpiece, find stable features, and find the origin, axial and zero high points respectively. Recording and ensuring consistency are necessary conditions for implementing batch measurement.
4 .Image measurement experience accumulation: For different product boundaries, it is necessary to match different light sources and light intensities, such as contour edges, weak edges, chamfers, etc. The image measurement instruments of the measuring personnel need to accumulate experience constantly.
5. Optimize the image measurement program: according to the measurement needs and the measurement magnification, the measurement path is arranged as a whole, so that the measurement platform can complete the measurement in sequence, path or clockwise direction. Counter clockwise, and compress the single measurement time as much as possible.