| 摘要 |
A blast machining apparatus, which performs blast machining of a section to be machined in a workpiece by jetting abrasive grains (1A) at said workpiece while moving over said workpiece, is provided with: a nozzle (1) for jetting the abrasive grains; a slit-shaped jetting port (2) that is provided on the nozzle (1); and a rotation mechanism (1B) for rotating the nozzle around the axis of the direction in which the abrasive grains are jetted. |
