| タイトル | Alignment positioning mechanism |
| 本文（外部サイト） | http://hdl.handle.net/2060/19910012230 |
| 著者（英） | Fantasia, Peter M. |
| 著者所属（英） | NASA Johnson Space Center |
| 発行日 | 1991-03-19 |
| 言語 | eng |
| 内容記述 | An alignment positioning mechanism for correcting and compensating for misalignment of structures to be coupled is disclosed. The mechanism comprises a power screw with a base portion and a threaded shank portion. A mounting fixture is provided for rigidly coupling said base portion to the mounting interface of a supporting structure with the axis of the screw perpendicular thereto. A traveling ball nut threaded on the power screw is formed with an external annular arcuate surface configured in the form of a spherical segment and enclosed by a ball nut housing with a conforming arcuate surface for permitting gimballed motion thereon. The ball nut housing is provided with a mounting surface which is positionable in cooperable engagement with the mounting interface of a primary structure to be coupled to the supporting structure. Cooperative means are provided on the ball nut and ball nut housing, respectively, for positioning the ball nut and ball nut housing in relative gimballed position within a predetermined range of relative angular relationship whereby severe structural stresses due to unequal loadings and undesirable bending moments on the mechanism are avoided. |
| NASA分類 | MECHANICAL ENGINEERING |
| レポートNO | 91N21543 |
| 権利 | No Copyright |
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