| 摘要 |
<p>Provided is a machine reamer which does not permit a grinding material to be fusion-bonded on a blade section even when a cutting speed is increased, has a high machining efficiency with less wear damage of a blade edge even in heavy cutting, and has excellent durability and long life. A plurality of thin and long blade sections (5A-5F) are provided to protrude from an outer circumference section of a reamer head main body (11), and a blade section formed of a different material is mixed as the blade sections (5A-5F).</p> |
