The invention relates to a drive (1; 101) of a machine (2) comprising a drive motor (3) for driving a rotatable shaft (5) of the machine (2) around a shaft axis of rotation (4), and comprising a clutch unit (10) in operative connection with the drive motor (3) and the shaft (5) for compensating for a relative movement (11) between the shaft (5) and the drive motor (3). The drive motor (3) has a rotor part (35) surrounding the shaft (5) on which a clutch rotation part (18A) of the clutch system (10) is mounted to be rotatable around the shaft axis of rotation (4), wherein the rotor part (35) is arranged at least partially engaging in the clutch rotation part (18A) in such a way that the clutch rotation part (18A) is mounted radially movably on the rotor part (35).

The invention relates to a drive (1; 101) of a machine (2) comprising a drive motor (3) for driving a rotatable shaft (5) of the machine (2) around a shaft axis of rotation (4), and comprising a clutch unit (10) in operative connection with the drive motor (3) and the shaft (5) for compensating for a relative movement (11) between the shaft (5) and the drive motor (3). The drive motor (3) has a rotor part (35) surrounding the shaft (5) on which a clutch rotation part (18A) of the clutch system (10) is mounted to be rotatable around the shaft axis of rotation (4), wherein the rotor part (35) is arranged at least partially engaging in the clutch rotation part (18A) in such a way that the clutch rotation part (18A) is mounted radially movably on the rotor part (35).

An ultrahigh-speed bar precision shearing device adopting a type of alternating current servo motors driving a flywheel to spirally compress nitrogen for energy storage includes a frame structure, a high-pressure air chamber mechanism, a hammer head movement mechanism and a mold are installed on the frame structure from top to bottom, the high-pressure air chamber mechanism cooperates with the hammer head movement mechanism to strike the mold, and bars are cut off and separated under the effect of the mold. The present application omits a complex hydraulic driving system, and ultrahigh-speed striking (20-30 m/s) of a hammer head is achieved in a manner of a flywheel spirally compressing nitrogen for energy storage; and control is simple, the return speed of the hammer head is high, and the energy utilization rate is high.