Driving apparatus for industrial robot
US4739669A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1985 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Dec 17, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/1868
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A driving apparatus for effecting linear movement of an industrial robot comprises a slide member axially slidably disposed within a frame, a ball nut secured to the slide member and a ball screw threaded through the ball nut and rotationally driven relative to the ball nut to effect linear movement of the ball nut along the ball screw accompanied by linear movement of the slide shaft. A bracket is adjustably mounted on the frame for rotatably supporting the shaft of the ball screw. The bracket can be displaced relative to the frame in the transverse direction of the slide member to align the axis of the ball screw with the axis of the slide member during assembly of the apparatus. A thrust bearing is disposed between the shaft of the ball screw and the bracket to absorb radial displacement and strain of the ball screw shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.