Hollow rack, hollow rack end diameter reducing method, hollow rack end diameter reducing apparatus, and hollow rack manufacturing method
US8104369B2 · kind B2 · utility
6Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2008 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Dec 1, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/1967
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The one end side portion is nipped by a jig including a jig member having a pair of convex portions which are to be fitted to a depressions in contact with a tooth side face and a inclined portion and positioning a bar and a jig member which is to be clamped/opened with respect to the jig member. A die having an inside diameter smaller than the diameter of the outer periphery is pressed onto the outer periphery of the end portion of the cylindrical end side portion projected from the jig up to a press-in depth determined preliminarily based on the rack, so as to reduce the diameter of the end portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.