Method and device for operating a hand-held machine tool with a tangential impact mechanism

1. A method for operating a hand-held machine tool with an impact mechanism driven by a drive shaft and an electric motor, the method comprising adjusting an actual torque provided by the drive shaft to a required torque, wherein the required torque is determined by measuring current of the electric motor, the method including switching the impact mechanism on when a value of the determined electric motor current exceeds a stipulated electric motor current threshold value.

2. The method according to claim 1 , comprising regulating the actual torque to the required torque.

3. The method according to claim 1 , including determining the required torque as a function of the measured electric motor current, wherein the actual torque is regulated to the determined required torque.

4. The method according to claim 1 , wherein the stipulated electric motor current threshold value is at least 15 amperes.

5. The method according to claim 1 , comprising adjusting the actual torque to the required torque by manually activating a switch to switch the actual torque off.

6. The method according to claim 1 , comprising changing the electric motor current to a value less than the stipulated electric motor current threshold value.

7. The method according to claim 1 , comprising adjusting the actual torque to the required torque by controlling the electric motor with an adjustment signal.

8. The method according to claim 7 , comprising forming the adjustment signal as a pulse width modulated signal.

9. The method according to claim 1 , wherein the electric motor is a brush motor.

10. The method according to claim 1 , wherein the electric motor is a brush-less motor.