Bending device with functions of pressure detection and torque adjustment as well as method

The invention relates to a bending device with functions of pressure detection and torque adjustment as well as a method. The device comprises a driving motor which is arranged on a rack, a clamping and fixing seat and a host which controls the driving motor, wherein a bending shaft is installed on the driving motor; and a processed workpiece is arranged on the clamping and fixing seat. The device further comprises a capacitive sensing thickness detector, a supporting rod, a pressure sensor and a controller, wherein the capacitive sensing thickness detector is installed on the rack by a support; the supporting rod and the pressure sensor are installed on the clamping and fixing seat; the controller is connected with the host; the supporting rod is installed in a clamping groove of the clamping and fixing seat; the upper end of the supporting rod is connected with a proximity switch; the pressure sensor is arranged on a side face of the processed workpiece; and the capacitive sensing thickness detector, the pressure sensor and the proximity switch are connected with the host through a DSP (Digital Signal Processor) data processing module respectively. According to the device, the processed workpiece is bent through the optimum torque, and the processing quality is improved; the proximity switch is arranged and used for controlling the bending angle, and excessive bending is avoided; and the pressure sensor is used for controlling the clamping pressure to be stable, and disadvantages of excessive deformation and looseness are avoided.