| 摘要 |
<p>The invention concerns a gear device, preferably motor device, for providing rotation about at least one output axis and a method for providing rotation. A body (2) is mounted for a rotation about first (4), sec-ond (11), and third (16) axes. The first axis (4) is oriented with respect to the second axis (11) at an inclination an-gle. The second axis (11) and/or the third axis (16) consti-tute the at least one output axis of device. The rotation of the body (2) about the third axis (16) gives rise to a change in the inclination angle. A ram (15) applies a torque (21) to the body (2) about the third axis (16) in a sense of increasing inclination angle when the first axis (4) is at a selected inclination angle with respect to the second axis (11) which is greater than 0° and less than 900°. The rotation of the body (2) about the third axis (16) in a sense of decreasing inclination angle is limited such that the inclination angle of the first axis (4) with respect to the second axis (11) remains greater than 0 degrees and less than 90 degrees. The body (2) is rotated about the first axis (4) at an angular velocity greater than a critical angular velocity so that a constant or a decreasing inclina-tion angle is reached.</p> |
