Material or article handling – Vertically swinging load support – Grab
Patent
1982-09-03
1985-04-23
Spar, Robert J.
Material or article handling
Vertically swinging load support
Grab
74640, 318568, 414 5, 901 9, 901 15, B66C 2300
Patent
active
045127107
ABSTRACT:
A robot forearm has a pivotally mounted proximal end, a distal portion axially rotatable with respect to the remainder of the forearm, and a wrist connected to the distal portion and being angularly tiltable with respect thereto. A gear on the distal end of a first output shaft rotatably mounted in the remaining portion of the forearm drives a tilt gear assembly mounted in the distal portion of the forearm to tilt the wrist. A second output shaft concentric with the first shaft is connected to the distal portion of the forearm for imparting rotation thereto. Motors mounted in the forearm are coupled to the ouput shafts through concentric input shafts and harmonic speed reducing drives. The drives are axially spaced and concentric and are coupled to the output shafts by flexible cup-like members. Encoders connected to the second output shaft and the tilt gear assembly encode the position of those elements and produce corresponding feedback signals which are used to control the motors.
Spar Robert J.
Textron Inc.
Underwood Donald W.
LandOfFree
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