Optodyne's laser-based vector measurement technology based on body diagonal is a new way to quickly measure and compensate the position error of CNC machine tools and machining centers in three-dimensional space. The technology was invented and patented by the American Optical Corporation, which follows ASME B5.54.
(1) and ISO0230-6 (2) requirements for body diagonal error measurement in machine tool measurement standards. For the 21 geometric errors of a three-axis machine tool constituting the (X, Y, Z) Cartesian coordinate system, it is quite time-consuming to perform detection using a conventional laser interferometer or the like. Based on the principle of step vector diagonal measurement, the company uses a patented laser Doppler displacement measuring instrument to measure the spatial position error of four diagonal lines with large plane mirrors, and obtain 12 sets of data. The basic error of the machine tool (three displacement errors, six straightness errors and three vertical errors) is determined by calculation, and the three-dimensional spatial position (positioning) error of the CNC machine tool is finally obtained. The company has introduced an application example of actual measurement and compensation on a machining center, thereby demonstrating the feasibility of the new measurement technology in the accuracy detection and accuracy compensation of CNC machining machines. The practical effect and prospect of understanding, popularizing and applying this measurement technology deserves industry attention.
Conclusion <br> <br> digital manufacturing technology is the basis of advanced manufacturing technology. On the basis of digital manufacturing technology, computer numerical control machine tools, numerical control tools, numerical control measuring instruments and machining objects (workpieces) and corresponding information are integrated by computer technology and communication technology to form a digital closed-loop cutting processing system. This can be considered as a specific implementation form of the CIMS concept. CIMS should be versatile, that is, have different levels and different levels. From the development of the closed-loop manufacturing system of CNC tools and the closed-loop system of cylindrical gears and bevel gears in recent years, we can get the enlightenment: we should combine the reality, focus on the big, and start small. The special (product) digital closed-loop manufacturing system may be a practical development path in the current CIMS field.
To improve the technical level of China's machine tool industry and enhance competitiveness, the fundamental way is to improve the ability of independent innovation and develop products and technologies with independent intellectual property rights. Judging from the recent international machine tool exhibitions held in China, the innovation awareness of China's precision tool industry has been continuously strengthened, the innovation capability has been continuously improved, and innovative technological achievements and products have emerged. However, the development of China's precision tool manufacturing industry is far greater than the development of CNC machine tools in China's machine tool manufacturing industry, both in terms of scale and technological advancement. It is far from being able to meet and adapt to advanced manufacturing industries such as car manufacturing and aviation. Demand for aerospace manufacturing, microelectronics manufacturing, etc. The tool industry needs to keep up with the machine tool manufacturing industry, strengthen cooperation and accelerate development.
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