Wrist mechanism for industrial robot
US4574655A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1984 |
| Grant date | Mar 11, 1986 |
| Priority date | — |
| Expiry date | Jul 16, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19051
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The present invention provides a wrist mechanism with three degrees of freedom for an industrial robot, which is compactly formed and to which a tool is mounted. The first degree of freedom is associated with a first input shaft for rotating a wrist portion at a low speed. The second and third degrees of freedom are associated with rotating the tool or tilting the wrist. In order to attain these motions, second and third input shafts concentrically arranged relative to the first input shaft are used for transmitting motion to, through bevel gears, speed reduction mechanisms each symmetrically disposed at right and left sides, and the outputs therefrom are used to drive the tool and wrist.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.