What measurement needs should be met when choosing a coordinate measuring machine?

What measurement needs should be met when choosing a coordinate measuring machine? Post time: 2019-11-11 Source: https://www.microaccuracy.com/ Coordinate measuring machine is a high-precision measuring instrument in the field of industrial production. In the process of purchasing suitable equipment, measurement accuracy is the most important thing for companies Considering the factors, which measurement needs should be met when choosing a three-coordinate measuring machine? Measurements in different fields have different requirements for accuracy. However, there are many choices for the accuracy performance of the CMM, which directly affects the price of the equipment. Each CMM has its own measurement uncertainty, so companies choose The purchase process must pay attention to whether the accuracy of the equipment can meet its own measurement requirements: Minimum accuracy requirements: At present, it is generally required that the accuracy of the measuring machine cannot be greater than 1/3 of the tolerance requirements of the tested product, which is the current minimum requirement. In other words, if the tolerance requirement of the product we want to measure is 0.03mm, then the accuracy of the coordinate measuring machine cannot be less than 0.01mm. MSA requirements: At present, many factories need to perform MSA (Measurement System Analysis) to ensure that the measurement system meets the entire production process. In MSA, the specification requires that the accuracy of the measuring instrument cannot be greater than 1/10 of the tolerance requirement of the tested product. In other words, if the tolerance requirement of the product we want to measure is 0.03mm, then the accuracy of the coordinate measuring machine cannot be less than 0.003mm. Of course, this requirement is more demanding for some companies, and it is very difficult to achieve for some fields. Comprehensive consideration: then when we determine the accuracy of the coordinate measuring machine, we must choose one of the above two situations, and more often, we choose a certain position in the middle of the two to determine the accuracy. That is to say, if the accuracy we want to choose is E and the required tolerance of the product is D, then 0.1D ≤ E ≤ 0.33D is enough. In the case of meeting the demand, we do not pursue performance too much, and the equipment can achieve higher cost performance. The above is the measurement accuracy that must be considered clearly during the purchase process of the coordinate measuring machine. This is related to whether the actual use of the equipment can meet the measurement needs of the enterprise. At present, as a professional domestic manufacturer of measurement equipment, MiaoJi can currently provide a variety of high-precision One-button measuring instrument and coordinate measuring machine equipment!