Systems and methods for object processing using a passively collapsing vacuum gripper
An end-effector for a programmable motion device is disclosed. The end effector includes a body that includes a contact portion, the body providing an open interior through which a vacuum may be provided to the contact portion, and the body includes at least one feature that is adapted to facilitate the contact portion to become substantially non-planar while grasping.
1. An end-effector for a programmable motion device, said end-effector comprising a body that includes a contact portion, said body providing an open interior through which a vacuum is provided to the contact portion, and said body including at least one feature that is adapted to facilitate the contact portion to become substantially non-planar while grasping,
the at least one feature including a shroud that surrounds at least a portion of the body, wherein an inner surface of the shroud contacts an object during grasping, and
the body further including a collapsible dome that is adapted to collapse into the open interior of the body and a stop member for limiting movement of the collapsible dome into the open interior of the body.
2. The end-effector as claimed in claim 1 , wherein the shroud is frustoconical in shape.
3. The end-effector as claimed in claim 1 , wherein the shroud includes a scalloped edge.
4. The end-effector as claimed in claim 3 , wherein the scalloped edge provides at least a portion of the contact portion.
5. The end-effector as claimed in claim 1 , wherein the contact portion includes at least a portion of the collapsible dome.
6. The end-effector as claimed in claim 1 , wherein the collapsible dome includes a plurality of apertures defined therein.
7. The end-effector as claimed in claim 1 , wherein the body further includes a plurality of braces on an inner surface of the shroud adjacent a base of the collapsible dome.
8. The end-effector as claimed in claim 1 , wherein the body includes at least one support rib on an inner surface thereof that extends along radial directions.
9. The end-effector as claimed in claim 1 , wherein the body includes at least one support rib on an inner surface thereof that extends along longitudinal directions.
10. The end-effector as claimed in claim 1 , wherein the stop member includes an opening defined therein to permit a flow of air at other than atmospheric pressure therethrough.
11. The end-effector as claimed in claim 1 , wherein the body includes a compliant material.
12. The end-effector as claimed in claim 1 , wherein the collapsible dome includes a larger area of opening at a central region thereof than an area of opening at a periphery thereof.
13. A programmable motion device including the end-effector of claim 1 .
14. An object processing system including the programmable motion device of claim 13 .
15. An end-effector for a programmable motion device, said end-effector comprising a body that includes a contact portion, said body providing an open interior through which a vacuum is provided to the contact portion, and said contact portion including at least one surface that is adapted to be drawn inward responsive to the vacuum such that the at least one surface remains in contact with an object while the at least one surface faces at least partially inward toward the open interior,
the contact portion including a shroud that surrounds a collapsible dome having a plurality of apertures defined therein, wherein the at least one surface of the contact portion includes an inner surface of the shroud and at least a portion of the collapsible dome that extends below the shroud.
16. The end-effector as claimed in claim 15 , wherein the shroud is frustoconical in shape.
17. The end-effector as claimed in claim 15 , wherein the shroud includes a scalloped edge.
18. The end-effector as claimed in claim 15 , wherein the body further includes a plurality of braces on the inner surface of the shroud adjacent a base of the collapsible dome.
19. The end-effector as claimed in claim 15 , wherein the body includes at least one support rib on an inner surface of the body that extends along radial directions.
20. The end-effector as claimed in claim 15 , wherein the body includes at least one support rib on an inner surface of the body that extends along longitudinal directions.
21. The end-effector as claimed in claim 15 , wherein the end-effector further includes a stop member for limiting movement of the collapsible dome into the open interior.
22. The end-effector as claimed in claim 21 , wherein the stop member includes an opening therein to permit a flow of air at other than atmospheric pressure therethrough.
23. A programmable motion device including the end-effector of claim 15 .
24. An object processing system including the programmable motion device of claim 23 .
25. A method of grasping an object with an end-effector that includes a body that provides an open interior that is coupled to a vacuum, said method comprising:
contacting a contact portion of the body with the object;
applying a vacuum through the contact portion to the object to primarily engage the object through tension force between the contact portion and the object; and
permitting any of the contact portion or a periphery thereof to become non-planar while grasping the object such that the object becomes primarily engaged with the object via a shear force that is greater than the tension force between the contact portion and the object,
wherein the body further includes a collapsible dome that is adapted to collapse into the open interior of the end-effector body and a stop member for limiting movement of the collapsible dome into the open interior of the body.
26. The method as claimed in claim 25 , wherein the contact portion includes a shroud that surrounds the collapsible dome, wherein an inner surface of the shroud contacts the object during grasping to create the shear force.
27. The method as claimed in claim 26 , wherein the shroud is frustoconical in shape.
28. The method as claimed in claim 26 , wherein the shroud includes a scalloped edge.
29. The method as claimed in claim 25 , wherein the contact portion includes at least a portion of the collapsible dome.
30. The method as claimed in claim 25 , wherein the collapsible dome includes a plurality of apertures defined therein.
31. The method as claimed in claim 25 , wherein the stop member includes an opening therein to permit a flow of air at other than atmospheric pressure therethrough.
32. The method as claimed in claim 25 , wherein the collapsible dome includes a larger area of opening at a central region thereof than an area of opening at the periphery thereof.