The cutting tool depends on the performance of the cutting tool material and structure and geometric parameters. Different processing methods for different tool design. For dry cutting tools must possess the following properties: (1) the tool should have high heat resistance and good abrasion resistance. (2) the coefficient of friction between the chip and the cutting tool must be as small as possible. (3) the shape of cutting tools to ensure the smooth chip removal and easy heat dissipation. (4) the tool should have higher strength and impact toughness. In the actual production, should be based on the physical and mechanical properties of the workpiece materialand process characteristics, reasonable selection of materials, optimization of coated cutting tools,tool structure and geometric parameters, and pay attention to the matching tool material and workpiece material, can design and produce for dry cutting tool.

Dry cutting tool materials

The structure and geometric parameters of cutting tool

The most important tool materials dry cutting is must have the high red hardness and high impact resistance. At present, suitable for dry machining tool materials with ultra fine cemented carbideand coated carbide, ceramic and metal ceramic materials, diamond and cubic boron nitride (PCD)(CBN).

Ultra fine cemented carbide

Ordinary hard alloy brittle usually large, easy to chipping. Ultra fine cemented carbide can improvethe toughness of cemented carbide, has good wear resistance and high temperature resistantperformance, can be used for milling and drilling.