In the large ultra precision molten gold machine, at present the United States, Britain,Russia and other countries have large ultra precision what hit machine developed by ourselves, and our country because there is no large ultra precision jewelry tools,therefore cannot process large diameter curved mirrors and other large ultraprecision parts, foreign to these super

Precision parts exports are strictly limited, which has seriously affected thedevelopment of sophisticated national defense technology in china. The combination method by processing, processing can also be a large mirror astronomical Trinidadmirror diameter 7.5m.

China has a "big manufacturing country", the scale of the manufacturing sectorranked fourth in the world, second only to America, Japan and Germany, in recent years in precision machining technology and jewelry equipment manufacturing has also made no small progress. Switzerland DIXI company to produce horizontal boring machine coordinates is famous in the

The DHP40 high precision high speed horizontal boring machine, the company produced has increased the multi axis CNC system, become a processing center; at the same time in order to realize high speed cutting, the spindle maximum speedprogress to 24000r/min.

At present, the use of computer simulation and molecular dynamics simulation methodfor ultra precision cutting process and mechanism of close to obtain good results, on the one hand deepen the removal mechanism of a very thin layer of material cuttingfamiliar, at the same time on ultra precision cutting effect is close to

Accurate forecast.

Jewelry equipment and the development of ultra precision machining technology,directly affects a country’s cutting-edge technology and national defense industry development, so all countries in the world are very face, put great efforts in research and development, while the implementation of technical security, control hubprocessing technology and equipment

Export.

R & D super precise carving wax is an important prerequisite for the development ofultra precision machining. This book is about the overall system precision platingwater and ultra precision feeding processing technology books, including: super fineclose cut and diamond cutting tools, precision and ultra precision grinding, grinding and polishing, precision

Dense and ultra precision, measurement technology and online error compensation in precision machining, micro processing technology, supporting environment finishing,nanotechnology. Ultra fine close cut diamond tool use requirements edge is verysharp, cutting edge radius in the range of 0.5 ~ 0.01 μ M

Because the diamond is very hard, and crystal anisotropy, ultrasonic cleaning machine and single crystal diamond cutter grinding is very difficult. USA laterdeveloped a large 6 axis CNC precision grinding machine, used for precision grindingof large optical mirror. For example, ultra precision close

Cutting of brittle materials, processing surface can not produce brittle fracture stitchand get the mirror, which relates to the thin cutting excision plastic brittle materialbrittle ductile transition problems, recently put forward many new insights.

Based on precision machining. In recent years, the developed countries havesuccessfully developed to improve the ultra precision machining of advanced.Development of ultra precision is further progress: ultra precision accuracy, the development of large ultra precision, steam cleaning machine development ofmultifunctional and efficient special ultra precision machine. But I

China is not a "powerful manufacturing country", there is still a wide gap compared with developed countries. Must admit, in the ultra Qian sealing technology, our and foreign advanced level compared to have considerable gap, quality level of domesticultra precision magnetic polishing machine is still in progress. In the large

Ultra precision, America LLL National Laboratory developed in 1986 two large ultra precision diamond lathe: one for the processing of the diameter of 2.1m horizontalDTM-3 diamond lathe, another for the processing of the diameter of 1.65m LODTMlarge vertical optical diamond lathe. Harbin industry

The university has successfully developed a new laser crystal orientation method, theequipment is simple, and the directional control convenient, can make the directionaldiamond crystal is greatly simplified.