Energy-saving machine tool hydraulic system

The invention relates to the technical field of machine tools, in particular to an energy-saving machine tool hydraulic system which comprises a storage and conveying module, a hydraulic control module and a hydraulic control module. The pressure control module is used for ensuring stable pressure of the hydraulic system; the energy conversion module is used for converting the hydraulic energy into kinetic energy; the electric cabinet is used for controlling the hydraulic system to work; the storage and conveying module comprises an oil inlet path, an oil return path, a motor and a variable vane pump, the motor is used for driving the variable vane pump to extract hydraulic oil, an energy accumulator and an electric connection point display pressure gauge are arranged on the oil inlet path, the energy accumulator and the electric connection point display pressure gauge are connected in parallel, and the energy accumulator is used for storing the hydraulic oil; the electric connection point digital display pre