| 摘要 |
The invention relates to a device for converting a rotational movement into an axial movement, comprising driven planetary rollers (10) and a sliding body (5) that can be axially displaced by means of the planetary rollers (10). The planetary rollers (10) are fixed axially in a driven carrier (9), are rotationally mounted and are provided with grooves (11). The grooves (11) of said planetary rollers (10) engage in a thread-type groove of the sliding body (5). In the centre of the carrier (9), a bearing body (7), which engages in the grooves (11), is provided. The aim of the invention is to construct said device in a simple manner and at the same time configure it to be devoid of slip. To achieve this, a device of this type has the following characteristics: the grooves (11 and 12) have a mutually adapted gradient, the planetary rollers (10) and the bearing body (7) engage with one another without slip, the carrier (9) and the bearing body (7) are driven in a rotational relationship, which guarantees that no slip occurs between the planetary rollers (10) and the sliding body (5).
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