| 摘要 |
The invention relates to an actuator (A) for a component (2), comprising at least one defined stop position, in particular to a brake component actuator of a thread brake (B), for the selective braking of a running thread (Y) which has a drive organ (D) for linear or rotational adjustment of the component (2). Said actuator is provided with at least one stop device (C). The stop device (C) consists of an additional body (Z), supported in a displaceable manner on a motion damping device (F, G, H) which can carry out an adjustment. The actuator (A) in the thread brake is a reversible motor, suitably a magneto-electric motor (M) for rotational movement and an additional body (Z), supported in a displaceable manner on a motion damping device is provided in each stop device, in which the thread brake is to stop. During a linear adjustment of the component (2), the mass (m1) of the additional body (Z) matches the mass (m) of the displaced parts. In contrast, with a component (2) that can be rotatably adjusted, the moment of inertia (I1) of the additional body (Z) matches the moment of inertia (I) of the displaced parts, in relation to the axis of rotation. |
