精密测量(国外英文资料).docVIP

精密测量(国外英文资料) What is the CMM? The development of three Coordinate Measuring machine (CMM) and its basic composition of the 2007-03-26 most three Coordinate Measuring machine (Coordinate Measuring Machining, referred to as the CMM) is developed in the 1960 s a new type of high efficient precision Measuring instruments. Its emergence, on the one hand, is due to the automatic machine, CNC machine tools, and more and more efficient processing complex shape parts processing need to be fast and reliable measuring equipment to match; On the other hand is due to the electronic technology, computer technology, numerical control technology and the development of precision machining technology for the three coordinate measuring machine provides technical basis. In 1960, the British FERRANTI company successfully developed the worlds first three coordinate measuring machine, by the late 1960 s, nearly 10 countries more than 30 companies in the production of the CMM, but this time the CMM is still in its infancy. Since the 1980s, the development of the CMM has been accelerated with the introduction of new products by companies such as ZEISS, LEITZ, DEA, LK, sanfeng, SIP, FERRANTI and MOORE. Modern CMM is not only can complete all kinds of complicated measurement under computer control, and information can be exchanged with nc machine tool, the control system for the processing, can also according to the measured data, the realization of reverse engineering. At present, the CMM has been widely used in machinery manufacturing, automotive industry, electronic industry, aerospace and defense industry and other departments, become indispensable to modern industrial testing and quality control of universal measuring equipment. The composition of the figure 3 coordinate measuring machine Platform 2 - mobile bridge frame 3 - central skid 4 - Z shaft 5 - electronic system The present situation and development of modern precision measurement technology Modern precision measurement technolo