Abstract: A working tool and a drilling method capable of improving workability are provided. A working tool includes a motor, a trigger switch to instruct the driving of the motor, and a microcontroller to control the driving of the motor. The microcontroller stops the motor without transitioning to a retry mode when detecting a rapid increase of a motor current. The microcontroller transitions to the retry mode when detecting an overload without accompanying the rapid increase of the motor current. In the retry mode, the activation and stop of the motor are repeated. When the load applied to a tool bit is eliminated during execution of the retry mode, the microcontroller returns to a normal mode while the trigger switch is kept on.

Abstract: A working tool and a drilling method capable of improving workability are provided. A working tool includes a motor, a trigger switch to instruct the driving of the motor, and a microcontroller to control the driving of the motor. The microcontroller stops the motor without transitioning to a retry mode when detecting a rapid increase of a motor current. The microcontroller transitions to the retry mode when detecting an overload without accompanying the rapid increase of the motor current. In the retry mode, the activation and stop of the motor are repeated. When the load applied to a tool bit is eliminated during execution of the retry mode, the microcontroller returns to a normal mode while the trigger switch is kept on.

Abstract: Provided is a work machine. The work machine has a brushless motor, and the brushless motor has a plurality of teeth. A stator coil is wound around each of the teeth. An end portion of each stator coil is connected to a circuit board. The circuit board has: a first conductor pattern connecting the stator coils wound around adjacent teeth; and a second conductor pattern and a third conductor pattern each connecting the stator coils wound around the non-adjacent teeth. The plurality of stator coils are in the form of delta connection parallel winding.