【正文】 high main axle rigidity characteristic, the high accuracy localization function and the high accuracy insert makes up the function, specially the circular arc high accuracy inserts makes up the function. The highspeed cutting cutting tool and ordinary processes the cutting tool the material to have is very greatly different. The main use cutting tool material has the hard alloy, the crystal bination diamond (PCD), the crystal bination cube boron nitride (PCBN) and the ceramics and so on. The highspeed cutting craft technology also is carries on the highspeed cutting processing the key. The cutting method chooses is improper, can make the cutting tool to intensify the attrition, cannot achieve the high speed processing pletely the goal. The practice proved, if only then the high speed engine bed and the cutting tool but do not have the good craft technology to make the instruction, the expensive highspeed cutting processing equipment cannot fully play the role. The highspeed cutting processing craft essential technology mainly includes the cutting method and the cutting parameter choice optimization. a. Cutting way choise In the highspeed cutting processing, should select the down milling processing as far as possible, because in down milling time, the cutting tool just cut into the thickness of chip which the work piece produces to a big way, afterward reduces gradually. When up milling, the cutting tool just cut into the thickness of chip which the work piece produces to be smallest, afterward the accumulation, increased the cutting tool and the work piece friction like this gradually, has the big calorimetry on the knife edge, therefore produces in the up milling quantity of heat when down milling are more than, the radial force also greatly increases. Meanwhile in the down milling, the knife edge main pression stress, but when the up milling the knife edge tension stress, the stressful condition is bad, reduced cutting tool39。s processing method the electric spark machining, simplified the processing craft and the cost of investment. the mold39。s service life. As shown in Figure 1, A is time the highspeed cutting processing heat conduction process, B is the traditional processing heat conduction process. high speed processing and traditional processing heat conduction The highspeed cutting processing process is extremely rapid, 95% above cutting quantity of heat are extremely few, ponents not because the temperature rise will cause the warp or the inflation distortion. The highspeed cutting is suitable specially for the processing easy thermal deformation ponents. Is low regarding the processing melting point the metal which, easy to oxidize (for example magnesium), the highspeed cutting has certain significance. advantageoued in the processing thin wall ponents Time highspeed cutting39。 On the other hand, according to needs to choose the suitable cutting velocity, only then can display the highspeed cutting truly like the strong point. The highspeed cutting (HSC) is an advanced technique of manufacture which for the past ten years rapidly rises. Because the highspeed cutting technology has the cutting efficiency to be high, the processing quality high, can process the hard steel stock and the good efficiency directly, causes profession and so on aviation, mold, automobile, light industry and information production efficiencies and the manufacture quality obviously enhances, and causes the processing craft and the equipment corresponding renewal. Therefore is similar to the numerical control technology is the same, the highspeed cutting and the high speed processing have bee in the 21st century a machinebuilding industry influence profound technological revolution. At present, adapts the HSC request high speed machining center and other high speed numericallycontrolled machine tool has assumed the popularization tendency in the developed country, our country recently is also speeding up the development. The highspeed cutting processing is faces for the 21st century a high technology and new technology, it is one kind is different with the traditional processing processing way. Compares with it, the highspeed cutting processing main axle rotational speed high, cuts high for the speed, the cutting quantity is small, but in the unit time material excises the quantity to increase 3 ~ 6 times actually. It take the high efficiency, the high accuracy and the high surface quality as the basic characteristic, in profession and so on in automobile industry, aerospace, mold manufacture and instrument measuring appliance has obtained the increasingly widespread application, and has obtained the significant technology economic efficiency, is the contemporary advanced manufacture technology important constituent. When with traditional way processing mold, often uses the electric spark machining, but the electrode design and makes itself is the technological process which timeconsuming takes the trouble. But after uses the highspeed cutting processing, because the narrow and small region processing realization and the high grade superficial result, let the electrode the utilization ratio reduce greatly. Moreover, makes the electrode with the high speed mill also to be possible to make the production efficiency to enhance to a new scale. The major part mold may use the highspeed cutting technology to process, like the forging die, the pression casting mold, cast with the blow molding mold and so on. Hammers the cavity body shallowly, the cutting tool life is long。 On the other hand, should also have the bigger to feed quantity, like 30000mm/min, 40000mm/min, even 60000mm/min。s contrast, elaborated the highspeed cutting processing superiority. In the article also briefly introduced the highspeed cutting processing in the processi