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Laser processing editing 
Advantages of laser machining 
In foreign countries, since the invention of the ruby laser at bell laboratories in 1960, the laser has been gradually applied to various fields such as audio and video equipment, ranging, medical instruments and processing. In the field of laser processing, laser emitter is very expensive (hundreds of thousands to millions), but because the laser processing has incomparable advantage over traditional machining, laser machining in countries such as America, Italy, Germany has accounted for processing industry more than 50% of the share. 
Laser precision processing technology editor 
The laser beam can be focused on a very small size, so it is especially suitable for precision machining. According to the size of processed materials and machining accuracy requirement of the laser processing technology can be divided into three levels: (1) large pieces of material laser processing technology, with thick plate (a few millimeters to a few millimeters) as the main object, its machining accuracy in millimeter and submillimeter level; 
(2) precision laser processing technology, with thin plate (0.1 ~ 1.0mm) as the main processing object, its machining accuracy is generally 10 microns; 
(3) laser micro-processing technology, for the main processing objects of various thin films under 100 mu m, the machining accuracy is generally below 10 micron or even sub-micron scale. 
In the mechanical industry, precision usually refers to the small surface roughness, various tolerance (including location, shape, size, etc.). The term "precision" refers to the small gap in the processed area, which means that the limit of the machining can be small. 
In these three kinds of laser machining, the laser processing technology of large parts has become more mature, and the degree of industrialization is already very high. Laser micro-processing technology such as laser fine tuning, laser precision etching and laser direct writing technology have also been widely used in industry. 
Laser precision machining and comparison editing of traditional machining methods 
Laser precision machining has the following characteristics: 
(1) wide range of objects: laser precision machining has wide range of objects, including almost all metal and non-metallic materials; Suitable for sintering, drilling, marking, cutting, welding, surface modification and chemical vapor deposition. However, electrolytic processing can only process conductive materials, photochemical processing is only applicable to corrosion resistant materials, and the plasma processing is difficult to process certain materials of high melting point. 
(2) precision: the laser beam can be focused to a very small size, so it is especially suitable for precision machining. The laser precision machining quality has little influence and high machining accuracy, which is superior to other traditional machining methods in general. 
(3) high speed: from the processing cycle, the electrode precision of the electric spark machining is high, the loss is large and the processing cycle is longer. The machining cavity of the electrochemical machining, the design of the cathode module of the type surface is large, and the manufacturing cycle is very long. The process of photochemical processing is complex; With laser precision machining operation is simple, cutting seam width, convenient regulation can be immediately according to the computer output pattern for the high speed engraving and cutting, processing speed, processing cycle shorter than other methods. 
(4) safe and reliable: laser precision machining belongs to non-contact processing, which does not cause mechanical extrusion or mechanical stress on materials; Compared with electric spark machining and plasma arc machining, its thermal influence zone and deformation are very small, so it can process very small parts. 
(5) low cost: not limited by the quantity of processing. For small batch processing services, laser processing is cheaper. For processing large products, bulk products mould manufacturing cost is very high, laser processing does not need any mould manufacturing, punching and shearing and laser processing completely avoid materials formed when the collapse edge, can greatly reduce the production cost of enterprises to improve the grade of the product. 
(6) the cutting seam is small: the slit of laser cutting is usually between 0.1 and 0.2 mm. 
(7) smooth cutting surface: no burr of laser cutting surface. 
(8) the heat deformation is small: the laser cutting of laser is fine, fast and concentrated, so the heat of the cut material is small and the deformation of the material is very small. 
(9) to save materials, laser processing with computer programming, can put the different shapes of products to suit cut materials, maximize the utilization rate of materials, greatly reduce the enterprise cost of materials. 
(10) very suitable for the development of new products: once the product drawing is formed, laser processing can be done immediately, and you can get the new product in the shortest time. 
In general, laser precision machining technology has many advantages over traditional processing methods, and its application prospects are very broad. 
Commonly used laser precision machining equipment editor 
Generally used in precision machining lasers, such as CO2 laser, YAG laser, copper vapor laser, excimer laser and CO laser. The high power CO2 laser and the high power YAG laser are widely used in the laser processing technology. The copper vapor laser and excimer laser are used in laser microprocessing technology. Medium and small power YAG lasers are generally used for precision machining. 
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