The development direction of precision measurement technology: non-contact, high-efficiency measurement

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The development direction of precision measurement technology: non-contact, high-efficiency measurement [Copy link]

In recent years, precision measurement technology has developed rapidly and achieved gratifying results. For example, online measurement technology can measure and display the processing status in real time, detect abnormal conditions in time, and thus greatly improve production efficiency.

In the process of high-precision processing and quality management, with the development of optomechanical integration and systematization, optical measurement technology has developed rapidly, and corresponding measuring machine products have emerged in large numbers, and the development of measuring software has also received increasing attention. In

recent years, there are many non-contact measuring machines and various devices developed using optical principles. For example, MARPOSS's non-contact tool measurement system MidaLaser is a new type of measuring machine using a laser probe. The machine can automatically perform non-contact measurement of all tools while the CNC machine tool remains in operation, and can automatically position the tools according to the measured values. Sony Precision Engineering's non-contact shape measuring machine YP20/21 is also a shape measuring machine that uses semiconductor laser high-speed and high-precision automatic focusing sensors. All scales are standard components, and the sensors and stage are controlled by microcomputers, with excellent operating performance and data processing functions. The non-contact three-dimensional coordinate measuring system Zip250 sold by YKT is a new type of measuring machine with high rigidity, high speed and high precision. The load capacity of the stage of the machine is 25kg, and the resolution of the scale (X, Y, Z axis) is 0.25μm. The machine is equipped with a CCD camera with a digital flange and the latest DSP processor, so it can perform high-speed image processing measurement, and can also be used with a contact probe for related measurements.

With the emergence of a large number of non-contact and high-efficiency measuring machines, experts predict that the development direction of measurement technology in the 21st century will be roughly as follows:

(1) Measurement accuracy will develop from micron level to nanometer level, and measurement resolution will be further improved;
(2) Transition from point measurement to surface measurement (that is, from precision measurement of length to precision measurement of shape), improving overall measurement accuracy;
(3) With the application of new technologies such as image processing, remote sensing technology will be promoted and popularized in precision measurement projects;
(4) With the establishment of a standardization system and the digitization of measurement uncertainty, the reliability of measurement will be effectively improved.

In short, measurement technology must achieve high precision, and at the same time, it also requires high speed and high efficiency. Therefore, non-contact measurement and high-efficiency measurement will inevitably become important development directions of precision measurement technology in the new century.