EP 3727758 B1 20211117 - SETTING METHOD FOR THREADED CONNECTION BY MEANS OF IMPACT WRENCH
Title (en)
SETTING METHOD FOR THREADED CONNECTION BY MEANS OF IMPACT WRENCH
Title (de)
SETZVERFAHREN FÜR SCHRAUBVERBINDUNGEN MITTELS SCHLAGSCHRAUBER
Title (fr)
PROCÉDÉ DE POSE POUR RACCORD À VIS AU MOYEN DE CLÉ À PERCUSSION
Publication
Application
Priority
- EP 17208763 A 20171220
- EP 2018086300 W 20181220
Abstract (en)
[origin: WO2019121837A1] The invention relates to a control method of an impact screwdriver for tightening a screw connection, which executes a sequence of consecutive phases in response to an actuation of a button. In a first phase, an impact mechanism of the impact screwdriver repeatedly exerts rotary impacts on the screw connection, wherein the first phase is finished when the estimated transmitted torque exceeds a threshold value that is predefined for the screw connection. In a second phase, a number of rotary impacts that is predefined for the screw connection is exerted on the screw connection. An estimation routine estimates a course of a rotation angle Φ over time. A model is adapted to the course and the predefined number is established based on the adapted model.
IPC 8 full level
B25B 21/02 (2006.01); B25B 23/147 (2006.01); B25B 31/00 (2006.01)
CPC (source: EP US)
B25B 21/02 (2013.01 - EP US); B25B 23/1475 (2013.01 - EP US); B25D 2250/175 (2013.01 - US); B25D 2250/195 (2013.01 - US); B25D 2250/201 (2013.01 - US); B25D 2250/205 (2013.01 - US); B25F 5/001 (2013.01 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3501740 A1 20190626; EP 3727758 A1 20201028; EP 3727758 B1 20211117; US 11426848 B2 20220830; US 2021008698 A1 20210114; WO 2019121837 A1 20190627; WO 2019122189 A1 20190627
DOCDB simple family (application)
EP 17208763 A 20171220; EP 18822091 A 20181220; EP 2018085720 W 20181219; EP 2018086300 W 20181220; US 201816955325 A 20181220