| 摘要 |
A machine reamer has blades to which a work material is not easily adhered by heat even if a cutting speed is increased, and hence high processing efficiency can be obtained. Additionally, the cutting edge of the blade is only slightly worn down even if heavy cutting is performed, and hence excellent durability and an extremely long machine life can be obtained. A plurality of slender blades (5A to 5F) is erected on the outer peripheral part of a reamer head body (11) . Different kinds of materials are used to make the blades (5A to 5F). |
