Die tapping unit
US6547496B2 · kind B2 · utility
9Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2001 |
| Grant date | Apr 15, 2003 |
| Priority date | — |
| Expiry date | Jul 27, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/9048
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An in-die tapping unit for a press in which two ball screw mechanisms are driven by closing motion between two housing pieces caused by press actuation. Both ball screw mechanisms rotate a central drive gear which causes rotation and axial advance of a pitch adapter sleeve axially advanced by a threaded engagement with a fixed pitch adapter hub, the movable pitch adapter carrying a tap holder, which rotates and advances a tap inserted therein. A striker pad and acceleration spring reduces the shock loading of the unit when the press engages the upper housing piece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.