Patent ID: 6662621
Filing Date: 2003-12-16
Classification: B25B,H01R

Abstract:
In a method for controlling an electrically operated pressing tool apparatus (1) for pressing a coupling element with a clamping pincer (2), wherein the pressing tool apparatus (1) moves a hydraulically actuatable piston (12) until reaching a predetermined pressure and then closes the clamping pincer (2), the improvement comprising:actuating the pressing tool apparatus (1, 5) after an insertion of the clamping pincer (2); registering a displacement of the piston (12) upon reaching the predetermined pressure as a nominal displacement value up to a settable tolerance; comparing each effective displacement value of every subsequent pressing procedure to the nominal displacement value; activating a signal upon a deviation of the effective displacement value of every subsequent pressing from the nominal displacement value; and deleting the stored nominal value displacement upon no voltage at the pressing tool apparatus (1).