| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an easily manufacturable air-driven rotary cutter. SOLUTION: This air-driven rotary cutter 10 is provided with a two-stage rotor 102. A hand piece 10 has an air passage 144 to guide air from a first turbine blade 112 to a second turbine blade 124. This air passage 144 is formed of surfaces 148, 150 parallel to a rotation axis 22, and a surface 152 facing a parallel direction to the rotary axis 22. The air passage 144 can thus be manufactured by processing it in a parallel direction to the rotation axis 22.</p> |
