1. In the stylus selection of the three-coordinate measuring machine, the shortest possible stylus should be used. However, because the use of long needles can make measurement more convenient, many operators will overlook this problem, but to deal with more careful measurement, we must use a relatively short measurement needle to enter and stop the measurement.
2. When measuring circles and lines, you should choose to project the surface or the side of the matter. When building the coordinate system of the part, you should correctly select a datum and a second datum, and how to select the datum axis when calculating the degree of coaxiality. This requires grasping the measurement principle of the three-coordinate measuring machine and accepting the correct method and pace according to the true situation. The degree coaxiality refers to the deviation of the center position of the circle and the center of the reference circle, and the measurement of the gear If the contact east-west entry and stop such as the vernier caliper and the roundness measuring instrument are used, it will be very cumbersome and time-consuming, and it will also wear the gear center. When using a three-coordinate measuring machine to enter and stop, the diameter range of the side head should be as large as possible.
3. If the appearance of the workpiece is too rough and low, the shape is unregular, and the probe of the three-coordinate measuring machine is a little different on the workpiece, and the size measurement error or shape error will definitely occur. Therefore, against the measured workpiece, especially the high-precision workpiece, the appearance roughness of the workpiece must match the dimensional accuracy, shape accuracy and position accuracy. The use of long and short contact method to stop the measurement, the characteristics of the glass table will not have any impact on the measurement data of the magnetic parts, the measurement only need to place the workpiece on the table to the screen to operate, not to be the traditional measurement method of the problem of the contract, but also to improve production efficiency. In order to reduce the application error of the three-coordinate measuring machine, it is necessary to ensure the correct manipulation of the measurement process, to deal with the difference in the measurement object, the measurement method is also different, and the selection of the appropriate measurement method can better ensure the measurement accuracy.
4, domestic optical image measuring instrument product LRpkc, when measuring the element, calculate the vector direction of the measured element in advance to ensure that the three-coordinate measuring machine collects the point according to the vector direction when measuring, and reduces the measurement error to a minimum.5. When using the three-coordinate measuring machine to enter and stop measurement, the diameter range of the side head should be as large as possible. Due to the use of three-coordinate measuring instruments to enter and stop measurement, the probe is an important measurement attachment, which will directly affect the measurement consequences. Compressor cavity is generally the use of metal material to stop the fabrication, if the wall thickness of the cavity is too thin is easy to helplessly accept high pressure and lead to compressor bursting, in addition to the wall thickness to be thick and average, the size of each hole is strictly in the feed and stop fabrication, otherwise there will be pressure leakage in the use of the situation, greatly reducing the compressor life will also cause unnecessary safety hazards.
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