| 摘要 |
A major-minor tool shank for a machine tool including a major tool shank for fitting a minor stool shank therein. One end of the major tool shank is a minor taper pot provided with a lock mechanism for locking the minor tool shank, the lock mechanism including lock pins installed in holes opening through the wall of the minor taper pot. A cylindrical tool grip and a sleeve cap cover the minor taper pot, and a coil spring is provided between the tool grip and the sleeve cap. With the aid of spring force, the inner end of the lock sleeve pushes the lock pins in the radial direction and the pins latch the pull stud of the minor tool shank to connect and hold the minor tool shank in the major tool shank. When the lock sleeve is pushed in the axial direction, overcoming the spring force, the lock pins are released from the pull stud of the minor tool shank. Thus, the minor tool shank can snap off the major tool shank. |
