| 摘要 |
PCT No. PCT/SE96/00861 Sec. 371 Date Dec. 17, 1997 Sec. 102(e) Date Dec. 17, 1997 PCT Filed Jun. 28, 1996 PCT Pub. No. WO97/02110 PCT Pub. Date Jan. 23, 1997A threading attachment for internal or external threading includes a spindle head (1) which is intended to be attached to a spindle on a machine tool and also a tap holder (5) with a holder body (6) in which a tap (13) is arranged during the threading work, the spindle head (1) and the tap holder (5) being extended along a joint axle. The tap holder (5) and the holder body (6) respectively have in threading position a power transmitting connection to the spindle head (1) via driving members (15, 16 and 28, 29, respectively) and have in back out position freely rotatable in relation to the spindle head (1) and arranged to be effected by a compressed medium via a driving member (18). The driving member can be a reaction turbine or an action turbine. |
