| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a peening device capable of easily retrieving media from a cavity, regardless of the position of the cavity.SOLUTION: A peening device 1 includes: a peening part 10 for projecting media 2 into a cavity 910 and peening the inside of the cavity 910; and a sleeve 20 for moving along the outside of the peening part 10. The sleeve 20 has an opening/closing part 22 at a tip on a side of a projection part 14a provided at the peening part 10, for projecting the media 2. If the sleeve 20 moves in a direction of the projection part 14a and sticks out from the projection part 14a, the opening/closing part 22 comes into a closed state, and space is formed between the sleeve 20 and the projection part 14a when the opening/closing part 22 is in the closed state. Movement of the sleeve 20 in a direction opposite to the projection part 14a of the peening part 10 brings the opening/closing part 22 into an opened state.</p> |
