Compliant device for nano-scale manufacturing
The present invention is directed to a compliant device comprising a support body, a floating body, and a plurality of flexure arms. Each of the plurality of flexure arms is connected between the support body and the floating body to transfer a load therebetween in parallel. To that end, the flexure arms have first and second sets of flexure joints. The first set of flexure joints facilitate rotational movement of said flexure arm about a first axis extending along a first direction. The second set of flexure joints are arranged to facilitate rotational movement of the flexure arm about a second axis, extending along a second direction that is transverse to the first direction. The flexure joints are resolute joints.
1. A compliant device, comprising:
a support body;
a floating body; and
a plurality of flexure arms coupled between said support body and said floating body to allow rotational movement between said support body and said floating body about a plurality of axes, wherein a first end of each of said plurality of flexure arms is coupled to said support body where a first pair of said plurality of axes overlap, and a second end of each of said plurality of flexure arms are coupled to said floating body where a second pair of said plurality of axes overlap.
2. The compliant device as recited in claim 1 wherein a subset of said plurality of flexure arms each has a first set and a second set of flexure joints, with said first set of flexure joints facilitating rotational movement about said first pair of said plurality of axes extending along a first direction and said second set of flexure joints facilitating rotational movement of said flexure arm about said second pair of said plurality of axes extending along a second direction, transversely to said first direction.
3. The device as recited in claim 1 wherein said plurality of flexure members are coupled between said support body and said floating body to facilitate relative rotational movement between said floating body and said support body about two transversely extending axes intersecting at a point.
4. The device as recited in claim 1 wherein said plurality of flexure members are coupled between said support body and said floating body to facilitate relative rotational movement between said floating body and said support body about two transversely extending axes intersecting at a point, with movement of about one of said two transversely extending axes being decoupled from movement about the remaining of axis of said two transversely extending axes.
5. The device as recited in claim 1 wherein said plurality of flexure members are coupled between said support body and said floating body to facilitate relative rotational movement between said floating body and said support body about two transversely extending axes intersecting at a point, while minimizing relative translational movement between said support body and said floating body.
6. The compliant device as recited in claim 1 wherein a subset of said plurality of flexure arms each has two sets of resolute joints arranged to facilitate rotational movement of said flexure arm about two transverse axes.
7. The compliant device as recited in claim 1 wherein said support body, said floating body and said plurality of flexure arms are integrally formed.
8. The compliant device as recited in claim 1 wherein said plurality of flexure arms are coupled so that all loads transferred between said support body and said floating body occurs in parallel.
9. The compliant device as recited in claim 1 wherein said floating body includes an aperture with one end of each of said flexure arms being coupled to said floating body, outside of said aperture.
10. The compliant device as recited in claim 1 wherein said floating body includes an aperture and said support body includes a throughway in superimposition with said aperture, with a first end of each of said flexure arms being coupled to said floating body, outside of said aperture and a second end of each of said plurality of flexure arms being coupled to said support body outside of said throughway.
11. The compliant device as recited in claim 1 further including an actuator system coupled to facilitate angular and translational movement between said support body and said floating body.