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

In recent years, the precision measurement technology has developed rapidly, and the results have been gratifying. For example, on-line measuring technology can be used for real-time measurement and display of processing status, and timely detection of abnormal processing, thereby greatly improving production efficiency. In high precision machining and quality management process, with the development of electromechanical integration, system, optical measurement technology has been rapid development, the corresponding measuring machine products in large numbers, the development of measurement software is attracted more and more attention. In recent years, non-contact measuring machines and devices have been developed with optical principles. A new non-contact measuring machine tools such as MARPOSS's MidaLaser measurement system is the use of laser probe, the machine can keep running in the CNC machine under the condition of all automatic tools for non-contact measurement, and according to the measured value of automatic positioning of tool. Non contact shape measuring machine YP20/21 SONY precision engineering company is the use of shape measurement of semiconductor laser machine of high speed and high precision automatic focusing sensor, all scales are standard components, sensors and stage are controlled by microcomputer, and data processing function has excellent operation. Zip250, a non-contact three coordinate measuring system sold by YKT, is a new type of measuring machine with high rigidity, high speed and high precision. The carrying capacity of the airborne stage is 25kg, and the resolving power of the scale (X, Y and Z axis) is 0.25 mu m. The CCD camera and the latest DSP processor with digital flanges are assembled on the machine, so the high-speed image processing can be carried out and the contact probe can also be used for correlation measurement. With the emergence of non-contact and high-efficiency measuring machines, experts predict that the development direction of measurement technology in twenty-first Century is roughly as follows:

The measurement accuracy is developed from micron to nanometer, and the resolving power is further improved;

The transition from point measurement to surface measurement (from precise measurements of length to precise measurements of shapes) improves overall measurement accuracy;

With the application of new technologies such as image processing, remote sensing technology will be popularized and popularized in the field of precision measurement engineering;

With the establishment of standardization system and the uncertainty of measurement uncertainty, the reliability of measurement can be improved effectively.

In short, to achieve high precision measurement technology, but also required to achieve high speed and high efficiency, therefore, the non-contact measurement and high efficiency measurement will inevitably become an important development direction of precision measurement technology in the new century.