Parallel link robot with additional actuator arranged at driven links
AssigneeFanuc Corporation
InventorTokitaka Uemura
Life of this patent
Estimating the term…
Abstract
A parallel link robot (10) includes an additional actuator (13d) which is arranged between two driven links (22b, 23b) in parallel with these driven links, a power transmission shaft part (39) which extends coaxially from the additional actuator and transfers the rotational drive force of the additional actuator to a posture changing mechanism part (15), a universal joint (38) which links the shaft part (14) which extends from the posture changing mechanism part and a power transmission shaft part, and a linking/reinforcing part (61) which bypasses the universal joint and links together and reinforces the two ends of the cutaway part of the casing of the moving part (12).
Claims5
A parallel link robot, comprising:
- a base part,
- a moving part,
- three link parts which link said base part and said moving part and respectively have single degrees of freedom with respect to said base part,
- three actuators which drive said link parts, respectively, each of said link parts including a drive link which is linked with said base part and two parallel driven links which link said drive link and said moving part,
- a posture changing mechanism part which changes a posture of an element which is attached to said moving part,
- an additional actuator which is arranged between said two drive links of at least one said link part in parallel to these driven links,
- a power transmission shaft part which extends coaxially from said additional actuator and transmits the rotational drive force of said additional actuator to said posture changing mechanism part, and
- a universal joint which connects a shaft part which extends from said posture changing mechanism part and said power transmission shaft part, said universal joint being arranged in a cutaway part which is formed in a casing of said moving part and being positioned on a line connecting two intersecting points between said two driven links and said moving part,
- wherein said parallel link robot comprises a linking/reinforcing part which bypasses said universal joint and links and reinforces the two ends of the cutaway part of the casing of said moving part, and
- wherein the linking/reinforcing part extends outward from an outer surface of the casing of the moving part so as to bypass the universal joint.
Dependencies are inferred from the claim text.