Abstract
In a cutting cemented carbide using a polycrystalline diamond compact (PCD) cutting tool, cutting forces, surface roughness and tool wear were experimentally investigated to understand tool machining characteristics. WC-16mass%Co was turned with the various kinds of PCD cutting tools that had different diamond particle sizes and different diamond contents. The following results were obtained: (1) The wear of PCD cutting tool with rake angle 0° was slower than that with −6°. (2) The tool wear decreased with increase of the diamond particle size. (3) In case of short cutting distance, the surface roughness decreased with decrease of the diamond particle size. However, when the tool wear was larger, the surface roughness increased with decrease of the diamond particle size.
As mention above, it was considered that a PCD with both the rake angle 0° and the diamond particle size 30μm was the most effective tool material in cutting of WC-16mass%Co from the standpoint of the surface roughness and the tool wear.
