【正文】 nding strain, the thermoplastic thermal conductivity to be in particular bad, easy to elevate temperature the cutting plastic, suitably with the highspeed steel or the hard alloy tools, selects the small to feed quantity and the high cutting speed, and uses pressed air the cutting tool is sharp, the angle is appropriate, may produce the beltshaped scrap, easy to carry off the quantity of heat. Glass (including semiconducting material and so on germanium, silicon) but degree of hardness high brittleness is methods and so on glass machining monly used cutting, drill hole, attrition and thickness in three millimeters following glass plates, the simple cutting method is with the diamond or other hard materials, in glass surface manual scoring, the use scratch place stress concentration, then uses the hand to break off. To the marble, the granite and the concrete and so on the hard material processing, mainly uses methods and so on cutting, turning, drill hole, shaping, attrition and cutting the available circular saw blade adds the grinding pound and the water。 Requests the cutting tool to have the reasonable geometry parameter and the convenience tight way, but also must consider the safe reliable chip breaking method. The force cutting refers to the roughing feed or cuts the deep machining greatly, uses in the turning and the grinding force turning main characteristic is the lathe tool besides the main cutting edge, but also some is parallel in the work piece has processed superficial the 4 vicecutting edge simultaneously to participate in the cutting, therefore may enhance to feed quantity pared to the general turning several times of even several with the highspeed cutting, the force cutting cutting temperature is low, the cutting tool life is long, the cutting efficiency is high。 The 7039。 To the 5039。 The generating process name rolls cuts method, is when the processing the cutting tool and the work piece do unfold the movement relatively, the cutting tool and the work piece centrode make the pure trundle mutually, between both maintains the definite transmission ratio relations, obtains the processing surface is the knife edge in this kind of movement envelope, in the gear processing rolls the tooth, the gear shaping, the shaving, the top horizontal jade piece tooth and rubs the tooth and so on to be the generating process machining has at the same time the knife point path law and the formed cutting tool method characteristic, like thread turning. The machining quality mainly is refers to the work piece the processing precision and the surface quality (including surface roughness, residual stress and superficial hardening).Along with the technical progress, the machining quality enhances 18th century later periods, the machining precision counts by the millimeter。1 The New Concept Of Cutting Processing The nowadays cutting tool pany cannot only be again the manufacture and the sales cutting tool, in order to succeed, they must be consistent with the globalization manufacture tendency maintenance, through enhances the efficiency, cooperates with the customer reduces the cost. Approaches the instantaneous global petition after this after NAFTA, the WTO time, the world pany is making quickly to the same feeling, is lighter, a cheaper response. In other words, they make the product and the ponents contain can in high speed under revolve, as a result of the cost pressure, best, is lighter moreover must make cheaply. Obtains these goals a best way is through develops and applies the new material, but these is new and the improvement material usually all with difficulty processes. In in this kind of mercial power and the technical difficulty bination is especially prominent in the automobile and the aviation industry, and has bee has the experience the cutting tool pany to research and develop the department the most important driving influence. For example, takes the modular cast iron to say that, it has bee the engine part and other automobiles, the agriculture the material which see day by day with the equipment and in the machine tool industry ponents. This kind of alloy provides the low production cost and the good machine capability bination. They are cheaper than the steel products, but has a higher intensity and toughness pared to the cast iron. But at the same time the modular cast iron is extremely wearresisting, has fast breaks by rubbing the cutting tool material the tendency. In this wear resistant very great degree bead luminous body content influence. Some known modular cast iron bead luminous body content higher, its resistance to wear better, moreover its machinability is worse. Moreover, the modular cast iron porosity causes off and on to cut, this even more reduces the life. May estimate that, the high degree of hardness and the high wearresisting cutting material quality must consider the modular cast iron the high resistance to wear. And the material quality contains extremely hard TiC in fact (carbonized titanium) or TiCN (carbon titanium nitrides) thick coating when cutting speed each minute 300 meters processes the modular cast iron to prove usually is effective. But along with cutting speed increase,