Method for determining the optimal insertion force of a fastener press
US8082647B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 11, 2008 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Apr 10, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18576
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Force data is monitored by a strain gauge during a preparatory setup operation of an insertion process during which a sample fastener is installed into a host material by a fastener press. Mathematical algorithms are utilized to determine an optimal insertion force, while a predetermined insertion velocity is maintained throughout the installation process regardless of the force required. With the ram velocity held constant, the insertion force is measured during the installation process and compared to the elapsed time to obtain a force slope. A data point on the force slope which corresponds to the point at which the force slope abruptly increases is captured and recorded as the optimal insertion force. This optimal force is then used by the press for all fasteners/host-material installations of the sample type.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.