Material or article handling – Vertically swinging load support – Grab
Patent
1986-01-22
1987-06-09
Werner, Frank E.
Material or article handling
Vertically swinging load support
Grab
74409, 74665A, 414918, 901 29, 901 37, B25J 1800
Patent
active
046717323
ABSTRACT:
An industrial robot is disclosed which is movable about six revolute axes, and which is modular in nature, to permit it to be configured to efficiently operate in a number of different applications. The robot includes a support stand defining a first primary axis, a waist which is rotatable about the first axis and which defines a second primary axis disposed perpendicular to the first axis, an inner arm fixed to the waist for rotation about the second axis, an outer arm fixed to the inner arm for relative rotation about a third primary axis, and a hand assembly mounted at the end of the outer arm. In addition, the outer arm includes a simplified drive arrangement composed of three concentric tubular members and respective drive motors, for moving the hand assembly of the robot about three additional axes of movement. The drive units for the three primary axes of movement are substantially identical to each other, and each includes an electric stepping motor and a brake, with the motor and brake being controlled by the program of a digital computer or the like. A novel transmission is mounted within the inner arm to effect movement of the outer arm about the third primary axis, and with the transmission being adapted to avoid relative rotation and backlash between the components of the transmission to thereby provide for the highly accurate controlled movement of the outer arm and its hand assembly.
REFERENCES:
patent: 2916948 (1959-12-01), Reid
patent: 3954188 (1976-05-01), Boyle
patent: 4068536 (1978-01-01), Stackhouse
patent: 4367998 (1983-01-01), Causer
American Cimflex Corporation
Underwood Donald W.
Werner Frank E.
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