Shaft with surface finished ridges
US11953080B1 · kind B1 · utility
1Cited by
14References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2022 |
| Grant date | Apr 9, 2024 |
| Priority date | — |
| Expiry date | Aug 2, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2025/2481
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A ball screw spline actuator includes a shaft, a ball nut, and a ball spline. The shaft includes a helical groove and a spline groove intersecting the helical groove forming intersections having a least one ridge including a first surface finish formed by a first manufacturing operation. The ridge is subsequently reformed through a second manufacturing operation to include a second surface finish to reduce stress concentrations in the ridge from cyclical loading from at least one of the ball nut or the ball spline. In one example, the second manufacturing operation reforms the ridge to include a surface finished edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.