Automatic billet perforating device and method

The invention provides an automatic billet perforating device and method. The automatic billet perforating device is characterized in that a workbench is slidably mounted on a base in the front-back direction, a carbon rod holder is fixed on the workbench, a power generator provides current for a carbon rod, a driving mechanism drives the workbench to slide in the front-back direction, one end ofa voltage sensor is electrically connected with the carbon rod, the other end of the voltage sensor is electrically connected with a billet, a first displacement sensor is used for acquiring the displacement of the workbench in the front-back direction, and a controller is used for controlling the moving speed of the workbench according to a pressure value monitored by the voltage sensor and the displacement monitored by the first displacement sensor. According to the technical scheme, the automatic billet perforating device and method have the beneficial effects that the first displacement sensor and the voltage sens