Self-water-supply water discharging structure of central spindle

The invention relates to a self-water-supply water discharging structure of a central spindle. The self-water-supply water discharging structure of the central spindle is installed on a machining center and comprises a spindle box assembly, a power assembly, a spindle cutter handle assembly, a hollow cutter beating device, a stop block stabilizing support and a water injection pipe; the power assembly is installed in the spindle box assembly; the spindle cutter handle assembly is sleeved with the power assembly; the power assembly is in transmission connection with the spindle cutter handle assembly; the upper end of the spindle cutter handle assembly is communicated with the hollow cutter beating device; the hollow cutter beating device is communicated with the water injection pipe; the water injection pipe is fixedly arranged on the stop block stabilizing support; the stop block stabilizing support abuts against the hollow cutter beating device; and the stop block stabilizing support is vertically arranged