Study on lapping of diamond tool (6th report) -Characteristics and crystallographic orientation of single crystal diamond die for wire drawing (Part 1)-

摘要

The internal surfaces of hole of the single crystal diamond die for wire drawing are composed of the various crystallographic orientations. A manner of representation of the diamond crystal planes and the directions rubbing with wire is proposed. It is shown as the diagram of crystallographic orientation on developing chart of diamond reference sphere expressed in the restricted Mercator's projection. The distributions of frictional force ratio on the die hole, curvature and curved direction of drawn wire, distribution of hardness on outside of drawn wire are measured, and the relation among them are discussed.