Gripper assembly

• US 4,645,411 A
• Filed: 03/18/1985
• Issued: 02/24/1987
• Est. Priority Date: 03/18/1985
• Status: Expired due to Fees

• Current Assignee: Albert Madwed
• Original Assignee: Albert Madwed
• Inventors: Madwed, Albert
• Primary Examiner(s): Valenza, Joseph E.
• Application Number:
  US06/712,809
• Time in Patent Office: 708 Days
• Field of Search: 414/744 A, 414/730, 414/736, 414/753, 414/739, 414/751, 901/39, 901/31, 901/32, 901/30, 269/279, 269/280, 294/93-97, 294/106, 294/902, 198/468.2, 198/470.1, 198/803.11, 198/803.3, 198/473.1
• US Class Current: 414/753.1
• CPC Class Codes: B25J 15/02 servo-actuated
• CPC Class Codes: B65G 47/90 Devices for picking-up and depositing articles or materials
• CPC Class Codes: Y10S 294/902 Gripping element

Abstract

A gripper assembly for incorporation in a programmable machine comprises a gripper having a peripheral portion defining a plurality of different shaped object-receiving recesses therein, a member for supporting the gripper, an arrangement for securing the gripper to the supporting member for rotation relative thereto, and apparatus responsive to an electrical signal for rotating the gripper relative to the supporting member. A programmable machine incorporating two such gripper assemblies is also disclosed.

Claims

1. In a gripper assembly for incorporation in a programmable machine and including a gripper and a coacting gripper surface movable relative to each other by moving means into operative relation for gripping therebetween a selected one of a plurality of different shaped objects, the improvement comprising:

said gripper having a peripheral portion defining thereabout a plurality of different shaped object-receiving recesses in said peripheral portion;

means for supporting said gripper;

means for securing said gripper to said supporting means for relative rotation of said gripper between a plurality of positions corresponding to predetermined relative rotations of said gripper for relatively rotatively moving a selected one of said plural recesses into a selected one of said plural positions for receiving in said selected recess at least a portion of an object substantially corresponding in shape to the shape of said selected recess; and

means responsive to an electrical signal for predeterminately rotating said gripper relative to said supporting means to selectively move one of said recesses to a selected one of said plural positions.

2. The gripper assembly according to claim 1, wherein said gripper comprises a disk, and wherein said object-receiving recesses are distributed about the edge of the disk.

3. The gripper assembly according to claim 1, wherein said gripper comprises a cylinder, and wherein said object-receiving recesses are distributed over the outer cylindrical surface thereof.

4. The gripper assembly according to claim 1, wherein said gripper comprises a hub having a plurality of spoke-like members extending radially therefrom, and wherein said object-receiving recesses are in the free ends of said spoke-like members.

5. The gripper assembly according to claim 1, wherein said gripper comprises a disk, and wherein said object-receiving recesses are in one end face of said disk near the periphery thereof.

6. The gripper assembly according to claim 1, wherein said means for securing said gripper to said supporting means comprises a shaft;

and wherein said means for rotating said gripper relative to said supporting means comprises a motor for rotating said shaft.

7. The gripper assembly according to claim 6, further comprising means for releasably locking said gripper against rotation relative to said shaft.

8. The gripper assembly according to claim 6, further comprising means for releasably securing said gripper to said shaft.

9. A programmable machine comprising:

a first gripper assembly comprising a first gripper having a peripheral portion defining thereabout a plurality of different shaped object-receiving recesses in said peripheral portion, first means for supporting said first gripper, first means for securing said first gripper to said first supporting means for relative rotation of said first gripper between a first plurality of positions corresponding to predetermined relative rotations of said first gripper for relatively rotatively moving a selected one of said plural recesses into a selected one of said first plural positions for receiving in said selected recess at least a portion of an object substantially corresponding in shape to the shape of said selected recess, and first means responsive to an electrical signal for predeterminately rotating said first gripper relative to said first supporting means to selectively move one of said first gripper recesses to a selected one of said first plural positions;

a second gripper assembly comprising a second gripper having a peripheral portion defining thereabout a plurality of objective-receiving recesses in said peripheral portion of said second gripper, second means for supporting said second gripper, second means for securing said second gripper to said second supporting means for relative rotation of said second gripper between a second plurality of positions corresponding to predetermined relative rotations of said second gripper for relatively rotatively moving a selected one of said second gripper plural recesses into a selected one of said plural positions thereof for receiving in said selected second gripper recess at least a portion of an object substantially corresponding in shape to the shape of said selected second gripper recess, and second means responsive to an electrical signal for predeterminately rotating said second gripper relative to said second supporting means to selectively move one of said second gripper recesses to a selected one of said second plural positions;

third means responsive to an electrical signal for moving said first and second supporting means relative to each other; and

control means operatively connected to said first, second and third electrical signal responsive means for predeterminately rotating said grippers relative to their respective supporting means in a preprogrammed sequence, and for moving said supporting means relative to each other in a preprogrammed sequence for manipulating said first and second grippers for grasping an object between said selected first and second gripper object-receiving recesses thereof.