In terms of cutting tool materials, auto parts due to increasing demand for the material itself, superhard cutting tool materials such as CBN (cubic boron nitride), PCD (polycrystalline diamond) tools and new carbide tool is widely adopted. In the domestic automotive tool material selected by the user, the use of carbide cutting tools is the largest, accounting for 64.1%. The development of super-hard tools, hard turning positive as an alternative method of grinding economic good in popularity. Compared with the first survey, superhard cutting tool usage has been significantly improved, such as machining the bore in the cylinder block and a half fine boring and fine boring process a lot on the use of CBN inserts, cutting speed has reached a new height tool life has been greatly extended. Tool structure Here to talk about simple indexable cutters. Indexable cutting tool in our promotion has been for many years, is progressing well, but the development is still unbalanced, in this survey the coverage is still lower than the overall user tools and welding tools. However, our indexable cutting tool technology has been new progress in the promotion process, breed rapidly growing application potential. Hyundai Motor Manufacturing of machining and tool technology used by the rapid development of high-tech has been widely adopted in the process, cutting mode, tool construction, tool material, tool coating and other areas have been greatly with the past, the traditional machining differences. New tool with novel structures and blade cutting edges and geometries are continuous research and developed to meet the needs of high-speed machining CNC machine tools and tool holder and their connections with the machine, such as the HSK, shrunk shank, hydraulic as well as other new shank tool holders and other widely used. In order to improve production efficiency and reduce tool change time in the processing of automotive components in the increasing use of a variety of complex tools, such as Boring complex, composite hinge drilling, drilling and thread processing complex, and other complex tools, complex structures the expansion tool to meet a lot of special processing requirements, and some even developed into machine tools, electrical, fluid integration of devices, has been far beyond the traditional concept of the tool. Automotive industry uses large quantities, production lines, processing conditions are relatively fixed, the processing efficiency of the tool life and stability made very demanding. In recent years, a large number of applications as automobile manufacturing lightweight materials, such as aluminum alloy, composite materials, diamond tool applications also increased: In certain machining processes such as the gearbox housing, the original use of the boring carbide knife to diamond cutting tools, tool life can even be increased to tens of thousands of pieces, its economic benefits are very obvious. Diamond tool because of its extreme hardness, the workpiece during machining of aluminum and other nonferrous metals and alloys high life. In addition, the ceramic tool is also a promising, is currently the automotive industry continues to get the tool applications, due to its high hardness and also has a very competitive price.