Wrist mechanism for industrial robot

Details Wrist mechanism for industrial robot Wrist mechanism for industrial robot

1986-04-29

1987-09-29

Husar, Cornelius J.

Machine element or mechanism

Control lever and linkage systems

Multiple controlling elements for single controlled element

414735, 901 28, B66C 110

Patent

active

046962026

ABSTRACT:
Disclosed is a wrist mechanism for an industrial robot which includes a first wrist member disposed rotatably at the tip of a robot arm and a second wrist member movable relative to this first wrist member. The movement of the second wrist member relative to the first wrist member is effected not in a bending mode in which the angle of intersection between the members is variable but in a rotating mode in which the second wrist member becomes rotatable. The transmission of the rotational power to the second wrist member is effected through a universal joint. With this arrangement, such backlashes as are conventionally found in the engagement between gears can be reduced, and the mechanical burden on the universal joint can also be reduced.

REFERENCES:
patent: 3101009 (1963-08-01), Musser
patent: 3555929 (1971-01-01), Hossfeld
patent: 3631737 (1972-01-01), Wells
patent: 3667320 (1972-06-01), Robinson
patent: 4499784 (1985-02-01), Shum
patent: 4511305 (1985-04-01), Kawai et al.
patent: 4666352 (1986-01-01), Stiff
"Universal" Mechanisms, Linkages & Mechanical Controls--McGraw Hill .COPYRGT.1965.

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