Forging machine for producing rivets or the like having running adjustments
US4488426A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 20, 1983 |
| Grant date | Dec 18, 1984 |
| Priority date | — |
| Expiry date | May 20, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21K1/60
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A double-blow header particularly suited for producing semitubular rivets is disclosed. The header is provided with three separate adjustments for controlling the position and operation of the extrusion pin, all of which can be adjusted while the machine is operating. A first adjustment determines the rearwardmost position of the extrusion pin and, in turn, adjustably determines the mass of material contained within the shank of the workpiece. A first powered drive adjustably determines the stroke of the extrusion pin during a piercing operation without altering the rearwardmost position thereof. A second powered drive adjustably determines the kickout stroke without altering the final position of kickout. The kickout drive adjustment and the first adjustment are interconnected so that both of them are adjusted in a related manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.