The invention provides a centralized pressure supplying method of hydraulic stations to overcome the defects that in traditional large and medium
machining factories, the effective
utilization rate of hydraulic stations is low, and waste of
electric energy is serious. The method comprises the following steps that A, when
machine tools including the hydraulic stations work with the full load, the needed maximum flow and the needed
maximum pressure are counted, and the accumulated values of the maximum flow and the
maximum pressure are calculated respectively; B, 20%-30% of the maximum flow accumulated value and 20%-30% of the
maximum pressure accumulated value are taken as the rated flow value and the rated pressure value of a new hydraulic
station; C, a pressure oil
pipe and an oil return
pipe are connected to the new hydraulic
station, and terminal valve sets of all the
machine tools are connected to the pressure oil
pipe and the oil return pipe in parallel; and D, pressure is supplied to the pressure oil pipe through the new hydraulic
station, the terminal valve set, corresponding to the
machine tool, on the pressure oil pipe is opened according to the specific working
machine tool, hydraulic branches corresponding to the machine tools need pressure maintaining by adjusting the terminal valve sets, and the terminal valve sets corresponding to the machine tools are closed when the machine tools do not work.