摘要 |
<p>#CMT# #/CMT# The method involves providing a mechanical energy storage i.e. helical spring, for storage of mechanical energy. An energy transmission unit i.e. piston, is moved between an initial position and a setting position for transmission of the energy from the mechanical energy storage to a fastening element e.g. nut. The energy transmission unit is provided with an electric motor (480) i.e. brushless direct current motor, that is operated free of load, where operating current is regulated in a tensioning direction for transferring energy of the mechanical energy storage. #CMT# : #/CMT# An independent claim is also included for a device for driving a fastening element e.g. nut or bolt, into a substrate. #CMT#USE : #/CMT# Method for driving a fastening element e.g. nut or bolt, into a substrate. #CMT#ADVANTAGE : #/CMT# The energy transmission unit comprises the motor that is operated free of load, where operating current is regulated in the tensioning direction for transferring energy of the mechanical energy storage, thus allowing transfer of sufficient energy to the fastening element. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a longitudinal sectional view of an electric motor. 455 : Solenoid 460 : Motor damping element 470 : Mounting element 480 : Electric motor 495 : Motor coil.</p> |