Title:
MOTOR DRIVEN ROBOT ACTUATOR
Document Type and Number:
Japanese Patent JPS60156238
Kind Code:
A
Abstract:
An improved electric actuator is provided, having in association therewith a resolver. The actuator includes a stationary and a rotatable housing, and an electric motor within it. The electric motor drives the rotary housing through a speed reducing harmonic drive mechanism. The actuator has an opening in the rotary housing, and a cavity inwardly of the opening having a mating anchoring element connected with the stationary housing. A modular resolver is provided, of a shape and size to have a major portion of it occupy the cavity provided in the actuator, and having a mating part for engaging the mating part of the stationary housing, upon assemblage of the resolver to the actuator. A rotatable part of the resolver is secured to the rotary housing. A heat dissipation system is provided, including a fan mounted on a rotary member of the actuator and a closed circuit for the passage of air between the fan and a heat conductive plate forming a part of the stationary housing. Stability for the rotary housing is provided by widely spaced ball bearings supporting a rotary shaft extending from the rotary housing, the ball bearings being located at the maximum axial spacing within the stationary housing. In addition, an electromagnetic brake of light-weight construction is provided to prevent rotation of the rotary housing, and the resolver includes a coupling of the bellows type for elastic isolation from distortion of the parts, due to stresses between the fixed and rotary parts of the resolver.
Inventors:
HAABAATO EDOWAADO FUERII
TOOMASU ROBAATO WAGUNAA
MAIKERU DEII HECHITO
TOOMASU JIYOSEFU DONERII
TOOMASU ROBAATO WAGUNAA
MAIKERU DEII HECHITO
TOOMASU JIYOSEFU DONERII
Application Number:
JP26654184A
Publication Date:
August 16, 1985
Filing Date:
December 19, 1984
Export Citation:
Assignee:
WESTINGHOUSE ELECTRIC CORP
International Classes:
B25J9/10; B25J9/12; B25J17/02; B25J19/00; F16D55/28; F16D59/02; F16D65/14; H02K7/102; H02K7/116; H02K7/20; H02K9/08; H02K11/00; F16D55/00; (IPC1-7): B25J17/00; H02K7/102; H02K7/20
Domestic Patent References:
| JPS58204748A | 1983-11-29 |
Attorney, Agent or Firm:
Michiteru Soga