US 7,071,595 B2 · Translation and rotation positioning motor

Abstract

A positioning device provides the capability of moving an object in both a linear and a rotational direction. The positioning device includes a first piezo stack with plural piezo plates that are capable of movement in orthogonal directions with respect to each other. The positioning device further includes a second piezo stack with plural piezo plates that are capable of movement in orthogonal directions with respect to each other. The positioning device also includes a first bearing that is disposed against the first piezo stack. The positioning device further includes a second bearing that is disposed against the second piezo stack. The positioning device also includes a spring element and a fifth bearing that is disposed against the spring element. The first through fifth bearings are disposed around and against the object to be positioned, to provide for positioning of the object in at least one of a linear direction and a rotational direction.

Claims15

Dependent claims

A positioning apparatus for positioning an object having a curved outer surface, comprising:

first deformation means for deforming in a first direction parallel to said outer surface and for deforming in a second direction parallel to said outer surface;
second deformation means for deforming in the first direction and in the second direction;
third deformation means for deforming in the first direction and in a third direction parallel to said outer surface;
fourth deformation means for deforming in the first direction and in the third direction;
a first bearing that is fixed coupled to the first deformation means;
a second bearing that is fixedly coupled to the second deformation means;
a third bearing that is fixedly coupled to the third deformation means;
a fourth bearing that is fixedly coupled to the fourth deformation means;
pressure exerting means;
and
a fifth bearing that is coupled to the pressure exerting means,
wherein the first through fifth bearings are disposed around and against the object to be positioned, to provide for positioning of the object in at least one of a linear direction and a rotational direction.

9 more elements

Dependencies are inferred from the claim text.

Translation and rotation positioning motor

Life of this patent

Translation and rotation positioning motor

Life of this patent

Abstract

Claims15