| 摘要 |
Centering cams (12a-12d) on a chuck (1) are engageable to centering grooves (30a,30b) on the rear side of a collet (2) when the collet is fixed to the chuck to align the collet with the chuck. Clamping balls (17) on the chuck engage a thrust surface (29) on the peripheral shoulder (28) of the collet. |
