【正文】 lar cast iron. In the past, the aluminum oxide ceramics application which not the coating tough good such as nitriding silicon and the silicon carbide textile fiber strengthened the work piece material chemistry paralysis limit. Today but could resist the scrap distortion process through the use to have the high thermal coating cutting tool life already remarkably to increase. But certain early this domains work piece processing use aluminum oxides spread the layer crystals to have to strengthen the ceramics, today most research concentrate in the TiN coating nitriding silicon. This kind of coating can remarkably open up the tough good ceramics the application scope. When machining, the work piece has processed the surface is depends upon the cutting tool and the work piece makes the relative motion to to the surface method of formation, the machining may divide into the knife point path law, the formed cutting tool law, the generating process three kinds. The knife point path law is depends upon the knife point to be opposite in the work piece surface path, obtains the superficial geometry shape which the work piece requests, like the turning outer annulus, the shaping plane, the grinding outer annulus, with the profile turning forming surface and so on, the knife point path are decided the cutting tool and the work piece relative motion which provides in the engine bed。 At the beginning of 20th century, machining precision Gao Yida millimeter。s, the machining precision enhances to micron. The influence machining quality primary factor has aspects and so on engi ne bed, cutting tool, jig, work piece semifinished materials, technique and processing improve the machining quality, must take the suitable measure to the above various aspects, like reduces the engine bed work error, selects the cutting tool correctly, improves the semifinished materials quality, the reasonable arrangement craft, the improvement environmental condition and so on. Enhances the cutting specifications to enhance the material excision rate, is enhances the machining efficiency the essential monly used highly effective machining method has the highspeed cutting, the force cutting, the plasma arc heating cuts and vibrates the cutting and so on. The grinding speed is called the highspeed grinding in 45 meters/second above the highspeed cutting (or grinding) both may enhance the efficiency, and may reduce the surface highspeed cutting (or grinding) requests the engine bed to have the high speed, the high rigidity, the high efficiency and the vibrationproof good craft system。 The outer annulus and the end surface may use the negative rake the hard alloy lathe tool, by 10~30 meter/minute cutting speed turning。s cutting edge of blade to the crushing and cutting depth of the trench lines badly worn. But using the latest hightemperature processing of small particles hard metal alloys to be effective, cutlery life improved, but more importantly to enhance the reliability of applications in hightemperature alloys. Small particles hard metal than traditional hard metal materials higher pression strength and hardness, only a small increase in the resilience of the cost. And resulted in high temperature alloy processing than traditional hard metal resistance mon failure mode more effective. PVD (physical gas phase deposition) coating also by certificate effective processing heatresisting alloy. TiN (titanium nitrides) the PVD coating was uses and still was most early most receives wele. Recently, TiAlN (nitrogen calorization titanium) and TiCN (carbon titanium nitrides) the coating also could very good use. In the past the TiAlN coating application scope and TiN pared the limit to be more. But after the cutting speed enhances them is a very good choice, enhances the productivity in these applications to reach 40%. On the other hand, is decided under the low cutting speed in coating superficial operating mode TiAlN can cause to accumulate the filings lump afterwards, micro collapses with the trench attrition. Recently, used in the heatresisting alloy application material quality already developing, these coating but became by several binations. The massive laboratories and the scene test has already proven this kind of bination and other any kind of sole coating pares in time the very wide scope application is very effective. Therefore aims at the heatresisting alloy application the PVD pound coating possibly to bee the focal point which the hard alloy new material quality research and development continues. With the MTCVD coating, the coating ceramics gather 6 in the same place, they hopefully bee a more effective processing to research and develop newly are more difficult to process the work piece material the main impact strength. Dry processing Including the refrigerant question is technical and the mercial expansion industrial production tendency another domain which the cutting tool makes. North America and the European strict refrigerant management request and the biggest three automobile manufacturer forces them the core supplier to obtain the ISO14000 authentication (the ISO9000 environment management edition), this causes the refrigerant processing cost rise. T