Ball spline unit and method of forming outer cylinder of ball spline unit
US6152602A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1999 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Jan 28, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D3/065
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An object of the present invention is to provide a ball spline unit enabling the balls to smoothly circulate without increasing a size of the ball spline unit, and enabling to be integrally molded by accurately setting a position of a resin portion to be formed to an outer cylinder. To achieve the object, the present invention is characterized in that at least one of the unloaded ball passage, retainer portions and ball direction changing passage inner peripheral portions is integrally molded with the outer cylinder in accordance with an insert molding method in which the outer cylinder is positioned within a molding die with reference to the loaded ball rolling grooves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.