Machining system capable of automatically switching feeding and discharging machining modes and machining method

The invention discloses a machining system capable of automatically switching a feeding machining mode and a discharging machining mode, and relates to the technical field of machining, in particular to a machining system capable of automatically switching the feeding machining mode and the discharging machining mode and a machining method.The machining system comprises an upper computer, a first controller, a numerical control drill, a conveying table and a mechanical arm; the conveying table comprises a material distributing table, a first conveying table, a second conveying table and a third conveying table. The third conveying table is used for conveying manually-fed plates to the first conveying table or used for conveying the machined manually-fed plates from the first conveying table to the third conveying table. The mechanical arm is used for placing the plates in the stacking area into the distributing table or placing the plates on the second conveying table into the stacking area and placing the pl