Abstract
The cutting tool has become the machinery to develop the essentialpart to rise together simultaneously the pivotal function. It is the metal cutting performer.
The cutting tool is directly carries on the machining to the work piece the tool, in the entire production cost, the proportion which the cutting tool expense occupies although very small, but because the cutting tool design or selects affects the cutting efficiency, the engine off trades the knife time and the engine bed interest rate. Therefore, has the substantive influence to the production cost, simultaneously the cutting tool reasonable design and selects correctly also has the substantive influence to the product. A unqualified cutting tool can cause existing in name only which complex, the expensive engine bed or the processing system change, does not have an effect completely. Therefore we must take the cutting tool the design rationalization, causes it better development.
Key words: Cutting tool, design, reasonable