Abstract: The disclosure relates to a drive device (V) for producing a translational motion of a movable tappet (8) by means of an electromagnetic rotating machine. The drive device includes an inner rotor (4) and an outer coaxial stator (5) and has a movement-thread pair integrated coaxially in the stator. The movement-thread pair comprising a lead screw (6), which is coupled to the rotor for conjoint rotation, and a threaded nut (7), which is linearly guided in a stator sleeve (2) in a rotationally fixed manner and is rigidly coupled to the tappet. The rotor is guided for rotation around the stator and a torque being transferred from the rotor to the lead screw by means of a thin-walled flange (10). A rotational fixation (11) of the threaded nut in the cavity of the stator sleeve is provided as a result of interlocking joining of the two.

Abstract: The invention relates to a drive device (V) for producing a translational motion of a movable tappet (8) by means of an electromagnetic rotating machine, comprising at least one rotor (4) and one stator (5), which is arranged coaxial to the rotor (4), having at least one movement-thread pair integrated coaxially in the stator, said movement-thread pair comprising a lead screw (6), which is coupled to the rotor (4) for conjoint rotation, and a threaded nut (7), which is linearly guided in a stator sleeve (2) in a rotationally fixed manner and is rigidly coupled to the tappet (8), the rotor (4) being guided for rotation around the stator (5), a torque being transferred from the rotor (4) to the lead screw (8) by means of a thin-walled flange (10), a rotational fixation (11) of the threaded nut (7) in the cavity of the stator sleeve (2) being provided as a result of interlocking joining of the two.