Abstract: The electric screwdriver apparatus control method is executed by an electric screwdriver apparatus. A processing module of the electric screwdriver apparatus loads a configuration data, and the processing module controls a motor module to accelerate a rotational speed to a target rotational speed. When a revolution number exceeds a first revolution number, the processing module controls the motor module to decelerate to a first rotational speed. When a torque value exceeds a first torque value, the processing module determines whether a fastening process of a screw ends with a hard stop or a soft stop according to the configuration data. If the fastening process ends with the hard stop, then the screw is additionally tightened for a hard stop angle, vice versa. The processing module tightens the screw according to the configuration data, the torque value and a rotational speed value, improving the process of fastening the screw.

Abstract: The electric screwdriver apparatus control method is executed by an electric screwdriver apparatus. A processing module of the electric screwdriver apparatus loads a configuration data, and the processing module controls a motor module to accelerate a rotational speed to a target rotational speed. When a revolution number exceeds a first revolution number, the processing module controls the motor module to decelerate to a first rotational speed. When a torque value exceeds a first torque value, the processing module determines whether a fastening process of a screw ends with a hard stop or a soft stop according to the configuration data. If the fastening process ends with the hard stop, then the screw is additionally tightened for a hard stop angle, vice versa. The processing module tightens the screw according to the configuration data, the torque value and a rotational speed value, improving the process of fastening the screw.

Abstract: A torque control device for an electric screwdriver connected to a tool head has a driving case, a transmission module, a torsion sleeve and multiple strain gauges. The tool head is connected to a front end of the driving case. The transmission module is mounted in the driving case and is capable of rotating the tool head relative to the driving case. The torsion sleeve connects the driving case and the transmission module. The driving of the transmission module can deform the torsion sleeve. The strain gauges are mounted on the torsion sleeve and are capable of detecting and recording the deformation of the torsion sleeve. By installing the strain gauges in the electrical screwdriver, working data of the electrical screwdriver can be recorded thoroughly. Torque of each fastening process can be controlled accurately according to the recorded data. Therefore, precision and efficiency of the fastening process is improved.