Method and device for setting blind rivets
US4872332A · kind A · utility
Inventor
Key dates
| Filing date | Jul 18, 1988 |
| Grant date | Oct 10, 1989 |
| Priority date | — |
| Expiry date | Jul 18, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49863
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In the setting of blind rivets, the rivets are placed onto a riveting mandrel having a thickened end, the diameter of which is larger than the diameter of the rivet hollow space, in such a way that the rivet head rests on the side remote from the thickened end. Then the rivet, together with the riveting mandrel, is inserted into the bores of the structural parts. The rivet head is then supported by a holding-down part. Finally the riveting mandrel, for opening-out the rivet end projecting through the bores, is displaced against the pressure direction of the holding-down part. In order to be able to reuse the riveting mandrel and to thereby simplify the riveting method and make it less expensive, the thickened end of the riveting mandrel, after adequate opening-out of the free rivet end, is reduced in diameter until it fits through the rivet hollow space, and subsequently the riveting mandrel, at the head side of the rivet, is pulled out of the cylindrical rivet hollow space and reused for the next setting operation. The method is carried out with a rivet tool, into which the riveting mandrel is integrated. 2
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.