For the change standard high-speed steel is at present thin curium a milling cutter in cutting process, cut bits to be out of shape big, jam easily in the chamfer holding bit in cutting tool, make cutting force increases or increase to already machined exterior surface roughness undesirable phenomenon, the author curiums original standard the tine of an iron knife counts twice to decrease, increase the space holding bit of milling cutter, changed the linear tooth back of milling cutter into curvilinear tooth back to drop the force before cutting and cutting temperature thereby, cutting efficiency twice rises. Standard high-speed steel is at present thin curium a milling cutter, because tine number is too much, volume of the chamfer that hold bit is minor, before part is small also, in cutting process, cut bits to be out of shape big, jam easily in the chamfer holding bit in cutting tool, increased to cut bits and workpiece to already machined exterior attrition, make cutting force increases or increase to already machined exterior surface roughness, so, curiuming very small every tine feed can be used only when cutting deep Ac of Fz and milling contact arc, reach inferior cutting rate, affect cutting efficiency severely rise. To change afore-mentioned undesirable appearances, raise cutting efficiency and prevent cutting tool damage, will original standard curiums the tine of an iron knife counts twice to decrease, increase the space holding bit of milling cutter, the linear tooth back milling cutter (if graph 1) changes curvilinear tooth back (show) 2 times like the graph, and of will former milling cutter before 10 ° of ～ of ° of horny γ O=5 change ～ of ° of wear γ O=20 25 ° , horn reduces ° of 10 of 8 ° ～ after, make cutting tool is in cutting process, cut bits to be out of shape reduce, platoon bits is light, eliminated cut bits to jam phenomenon, dropped the force before cutting and cutting temperature thereby, cutting efficiency twice rises, see next tables. Pursue 1 standard curiums a graph of milling cutter tooth form 2 scanty tine curium tine of form of milling cutter of Mm of diameter of comparative milling cutter figures a cutting result when milling cutter tooth form expresses milling aluminium alloy dosage of milling of angle of cutting tool of tooth chamfer form ages deep Hmm ages. 5 linear tooth back 5166150 ～ type of 200129 scanty tine 1684 curves tooth back 1180214 ～ of 25820750 ～ 296Ø110 × 1.
2 levels type 501.
80.
9 linear tooth back type of 10163100104 scanty tine 1895 curves tooth back 25830750407 CNC Milling