精加工新技术（Fine machining new technology）.doc

精加工新技术（Fine machining new technology） One The characteristics of ultra precision machining technology At present there is no uniform definition of ultra precision machining, in different historical periods and the development of science and technology in different circumstances, there are different Understand。 We usually think of the processed parts size precision and shape precision was zero a few microns, the surface roughness is better than a few microns per cent The processing technology for ultra precision machining technology. Ultra precision machining technology with high accuracy is the technology, it must be in the comprehensive application of various new technologies, excellence in all aspects of the Under the condition that the limit of accuracy is likely to break through the conventional technology to reach the high precision of the new index. The main conditions of ultra precision machining should be Including the following aspects of high technology: (1) and ultra precision machine tools and fixtures; (2) ultra precision cutting tools, tool material, cutting edge grinding technology; (3) the ultra precision machining technology; (4) control of ultra precision machining environment (including temperature, vibration, cleanliness control etc.); (5) measurement and control technology of ultra precision machining Two New technology and new progress in the key unit of the ultra precision machine tool Two One gas float main axis and gas float / liquid float guide rail system The new technique art gas float main axis The most large excellent spot yes return turn essence degree high . from to gas float error difference all turn effect answer , through often main axis return turn transport move essence degree than main axis plus work The circular degree essence degree want high A Five ~ One Zero times . main axis and electric machine Mining use One body turn junction structure straight meet drive move . electric machine and main axis The move flat Heng ask topic