Guidance system

A guidance system for guiding the displacement of a movable element with respect to a fixed element, the guidance system comprising

• a linear actuator,
• the fixed element comprising
• a main guide axis,
• a secondary guide axis,
• the movable element being arranged to be displaced by the linear actuator with respect to the fixed element along a first axis, the movable element comprising:
• a first rolling bodies guide device cooperating with the main guide axis, arranged to block four degrees of freedom of the movable element, the four degrees of freedom comprising a translation along a second axis, a translation along a third axis, a rotation about the second axis and a rotation about the third axis,
• a second rolling bodies guide device cooperating with the secondary guide axis, arranged to block a rotation of the movable element about a third axis
• wherein
• there is a clearance between the main guide axis and the first rolling bodies guide device and/or between the secondary guide axis and the second rolling bodies guide device, and wherein
• the fixed element or the movable element comprises a first magnet, and the movable element respectively the fixed element comprises a ferromagnetic support and/or a second magnet, wherein the first magnet and the ferromagnetic support respectively the second magnet are arranged to generate a magnetic force which is arranged to reduce or avoid this clearance, thereby enabling guidance with little or no clearance.