HOLDER FOR TIP AND METHOD FOR MANUFACTURING THE SAME, AND SCRIBING DEVICE AND MANUAL CUTTER THAT ARE PROVIDED WITH THE HOLDER FOR TIP

摘要

A chip holder has a cutter chip having a conical shaft at both sides thereof. Concaves for supporting the cutter chip are bell-shaped having a curve with a predetermined radius of curvature. In an example, solid lubricant may be supplied from the outside of the holder to the concave of the chip holder. Thus the life of the cutter chip can be extended. IMAGE