Backlash-free axle bearing for gantry systems

Device for positioning an end effector in a space which is spanned by a longitudinal direction, by a transverse direction transverse to the longitudinal direction and by a vertical direction transverse to the longitudinal direction and transverse to the transverse direction, comprising:

• a first linear rail which is aligned in the longitudinal direction and on which a first longitudinal slide is arranged so as to be movable in the longitudinal direction,
• a second linear rail, which is aligned parallel to the first linear rail in the longitudinal direction and on which a second longitudinal slide is arranged so as to be movable in the longitudinal direction, and
• a third linear rail guiding a cross slide, which is connected to the first linear slide via a first guide element and to the second linear slide via a second guide element,
• characterized in that the first guide element is designed as a first spring structure that is rigid in the vertical direction and the second guide element is designed as a second spring structure that is rigid in the vertical direction.