High hardness and other excellent properties of diamond tools make it very suitable for machining non-ferrous materials silicon alloy, aluminum, copper alloy and fiber-reinforced composite materials, phenolic resin, graphite and other non-metallic materials. Because of the smaller particles of natural diamond material, expensive, difficult process and other reasons, its application is limited. Synthetic polycrystalline diamond (pcd) tool, although in the semi-finishing, finishing plays an important role in the field, but because of the shape of a single blade, no chipbreaker geometry parameters and limitations, with its excellent performance is difficult to give full play. Thick diamond tool is a new tool to be deposited on the diamond thick welded carbide inserts made with excellent processing performance and high cost performance. Our diamond thick end mill research, development and application is still in its infancy.

    Due to high temperature and pressure during the preparation of trace binder added, so the hardness be affected (hk5000 ~ 8000), lower than the hardness of natural diamond, but its high impact strength; tool with a composite sheet made of pcd presents many irregularities on the micro-serrated edge, and therefore suitable for semi-finishing and finishing, but not suitable for surface accuracy level required to achieve the ultra glossy finish. Figure 2 shows, the microstructure of diamond films complete a single, small and slight gap, similar to the single-crystal diamond; because the material organization composed entirely of diamond, no binders inclusion, and therefore has a higher hardness (hk8300), close The average hardness of natural diamond; grinding as the choice of appropriate technology, thick diamond tool available without serrated blade straight, very suitable for ultra-precision mirror-grade surface finish.