Tools and methods for finishing a previously created thread without cutting
US7354350B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2005 |
| Grant date | Apr 8, 2008 |
| Priority date | — |
| Expiry date | Feb 12, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49995
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Implementations of the present invention include a thread-rolling tap, which is designed and intended for the non-cutting finishing of a previously created thread, in particular internal thread. For example, one implementation of such a tool includes at least one thread-forming portion that rotates about a tool axis, the thread-forming portion having multiple forming wedges. The forming wedges in cross-section include two flanks that diverge from one another beginning at a forming wedge tip. The forming wedge tip can be shaped as any of an acute angle, a rounded region, or a flattened region. At least one of the two flanks also include at least one expansion for positioning the forming wedge in the previously created thread. Additional implementations of the invention relate to a methods of manufacturing such a tool, as well as to methods of creating a thread.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.