The working principle of an electric wrench mainly relies on the mechanical structure driven by the motor, in this way the bolt or nut is tightened or loosened. In the specific working process, the output shaft of the motor transmits power through the gearbox and drives the output shaft to rotate. When a large resistance is encountered, such as the nut is in contact with the workpiece, the impact block assembly will compress the spring under the action of applied resistance. When the spring is compressed to a certain extent, it suddenly releases the stored energy, pushes the impact block to rotate outward, and hits the output shaft in the circumferential direction. This periodic process of compression and release creates collision after collision to obtain the required impact moment to tighten the nut.
In addition, the design of electric wrenches also includes adjustment functions, allowing users to select the appropriate specifications in a certain torque range (e.g. 50-3500N.m) according to different needs to ensure that the bolt or nut is tightened to the required torque or axial force requirements in a particular application.
