Method of tightening a bolt with an optimum time
US5650574A · kind A · utility
11Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1996 |
| Grant date | Jul 22, 1997 |
| Priority date | — |
| Expiry date | Jun 27, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B23/147
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of tightening a bolt in an optimum time length does not require an additional program for controlling speed once optimum internal parameters have been determined through several learning cycles. A target torque is first preset and the nut runner is subjected to several learning cycles so that the nut runner automatically determines such internal parameters as to stop the motor immediately after the target torque is reached, requiring a minimum time for tightening the bolt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.