The stretch model of titanium alloy is measured heat conduction coefficient of temperature conductivity is small, small, it is a kind of typical difficult treatment material, the difficulty when undertaking deep chamfer cutting especially is greater. The graph is shown 1 times machine to be on spare parts of some titanium alloy wide for 4mm, deeply 30mm, long the treatment example of the deep chamfer that is 300mm. To average data (be like 45 steel) , machine afore-mentioned deep chamfer to often use high-speed steel (W18Cr4V) curiums a milling cutter (120 × of φ 40 × of φ 4, 60 tine) undertake milling, cool adequately, can get favorable milling result. But to material of titanium alloy TC4, use afore-mentioned curiuming that deepness is a milling cutter cutting when the blind chamfer of 30mm, a new razor blade is machining the 1st ～ the cutting tool when 2 workpiece arises namely wear away, its cutting blade becomes blunt, if undertake blade is ground not in time, criterion the extruding of cutting blade ahead can increase apparently, the metal of cutting area is out of shape also increase, in the meantime, of the cutting tool after wearing away hind horn is reduced ceaselessly, increased thereby chafe with what already machined the surface at the back of cutting tool force, make heat in metal cutting increases, bring about cutting temperature to lift quickly. When machining the 3rd spare parts, its tooth two side point of a knife is apparently burned-out, bits having titanium is stuck in tooth back and look bits chamfer especially, make clear serious extruding happened in cutting process. Because guide besides titanium alloy,this is hot coefficient of temperature conductivity is small, titanium alloy material and coefficient of friction of cutting tool material are big outside waiting for a reason to cause cutting temperature quickness to lift, because allow bits chamfer to cause the difficulty that discharge bits greatly not quite,still existing. If undertake to afore-mentioned tatty razor blade blade is ground, the point of a knife that needs to will burn out is ground completely piece, diameter of its razor blade wants abrasion 3 ～ 4mm, such, the blade of a cutting tool grinds a frequency to be able to decrease greatly, make the chamfer holding bit of tooth becomes smaller. Practice makes clear, through the razor blade after such blade are ground, can machine a spare parts only at most. For this, try to have new bit jumping aging in research in order to increase the space holding bit of milling cutter, result discovery, this kind of method can make the life of cutting tool rises 3 times the left and right sides, every razor blade can machine 5 spare partses. This kind of cutting tool can satisfy the need of scientific research trial-produce, but the requirement that cannot satisfy batch to produce. We are used to curiuming an idea that milling cutter has jumping aging, can use what cut titanium alloy TC4 at mill to curium life gets a milling cutter rise significantly. This kind of method can reduce the attrition of cutting tool and titanium alloy material, can increase the space that hold bit, but the potential of this kind of method is limited. From the angle consideration that produces efficiency and cost, should design hard alloy (YG15) solders cutting tool and high-speed steel (W6Mo5Cr4V2Al) solders cutting tool, structure of its cutting tool sees a picture 2. If plan institute is shown, of cutting tool before horn is 6 ° ～ 8 ° , horn is 6 ° after, the horn after side edge is 3 ° ～ 5 ° . Solder with hard alloy cutting tool and high-speed steel solder the cutting tool treatment opening slot to afore-mentioned workpiece has a test (cutting condition is same) , high-speed steel solders cutting tool can machine 6 spare partses, and YD15 solders cutting tool can machine 30 spare partses. Curium integratedly a milling cutter and jump tine curiums a milling cutter, ap ＝ 7mm is in cutting dosage, f ＝ 0. 3mm/r, the test has below the condition of V ＝ 26m/min, can reach cutting tool wears away to figure the relationship between with treatment chamfer (3) seeing a picture. From the graph 3 can see, in treatment of milling of titanium alloy deep chamfer, of cutting tool wear away to basically be concerned with cutting tool material, to titanium alloy this is planted difficult treatment material, should preferential choose material of fine grained hard alloy, can raise its to machine efficiency and treatment quality greatly. In addition, the structure of cutting tool cutting part is very important also, want to consider tooth to have the larger space that hold bit already, want to consider to choose reasonable tine number to machine efficiency in order to rise again. Accordingly we choose 4 tine or 6 tine hard alloy solders type chamfer milling cutter, satisfied the requirement that batch of titanium alloy deep chamfer machines. The experiment makes clear, milling of deep to titanium alloy chamfer is machined, use jump tine curiums a milling cutter and convention curium a milling cutter photograph than, cutting tool life raises 3 times; Use YD15 hard alloy to solder milling cutter can improve cutting tool life significantly. CNC Milling