GEWINDESCHNEIDAPPARAT

摘要

A tapping apparatus (10), with a drive part (11) which can be driven by means of a machine spindle and can be axially moved by it, an output part (16) displaceable relative to the drive part (11) and intended for driving a holder (18) holding a tap, a reversing mechanism (21) for direction of rotation, which is driven by the drive part (11), and a reversible positive-locking clutch device (27) which has an operating member (28), connected to and driving the output part (16), as well as a clutch part (29), driven by the drive part (11), and a clutch part (30) connected to the output of the reversing mechanism (21) for direction of rotation, in which arrangement, on account of an axial relative displacement between the output part (16) with operating member (28) on the one hand and the clutch parts (29, 30) on the other hand, the first (29) or the second clutch part (30) can be brought into engagement with the operating member (28) or a non-driven intermediate position can be set, is designed as follows: the operating member (28) has clutch members (39, 40) which are guided therein and which can be brought into positive-locking clutch engagement with clutch elements (41, 42) on the first (29) or second clutch part (30), the clutch members (39, 40) being balls. Sitting between operating member (28) and output part (16) is a damping device (53) which is spring-cushioned in both directions of rotation and performs a damping action during a sudden change in the direction of rotation of the drive. ……