Robot arm structure

Details Robot arm structure Robot arm structure

1995-05-19

1996-10-22

Underwood, Donald W.

Material or article handling

Vertically swinging load support

Grab

414680, 7449004, 901 21, 901 22, B25J 900

Patent

active

055671101

ABSTRACT:
Disclosed is a flexible robot arm structure utilizing an elongate skeletal frame member which can be controlled to assume any of a number of curved shapes as in the performance of automated operations. The arm functions somewhat like the body of a snake or an elephant's trunk. The skeletal frame defines a plurality of similar elemental segments disclosed in the form of disc-like structures as well as turns in a helical loading configuration. The helical form includes interleaved flexible helix members interconnected in a chain-link form. Displacement of sections in the arm is accomplished by the action of two separate mechanisms. A deflection mechanism provides power to flex or curve an arm section while a distribution mechanism distributes the curvature along the length of the arm to seek a smooth, circular curve. Illustrative embodiments use hydraulic actuators integral with the frame; however, equivalents are disclosed. The resulting arm is a highly repetitive, mechanical structure.

REFERENCES:
patent: 3284964 (1966-11-01), Saito

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