| 摘要 |
It is known that an accurate relative movement and positioning between two bodies (2 and 26, 28, 30) can be effected by successive depression of mutually staggered wedges (40, 42) on one of the bodies against a rectilinear tooth row (4, 6) on the other body (2). If high displacement forces are to be transferred problems occur with respect to wear of the wedge guides, and with the invention this is obviated by the wedges (40, 42) being secured on leaf springs (46), which allow the wedges to carry out the required actuation movements while the associated cross forces are transferred in a frictionless manner to the relevant carrier body (28) through the leaf springs (46). Particularly advantageous actuation means (66, 68) for the operation of the wedges are indicated, and it is also disclosed that the discussed moving and positioning principle is applicable for the production of rotary movements. |
