The invention discloses a gear internal keyway intelligent milling device, and relates to the technical field of gear milling, the gear internal keyway intelligent milling device comprises a milling table, the upper end face of the milling table is fixedly connected with a support frame, the upper end face of the support frame is fixedly connected with an air cylinder, the output end of the air cylinder is fixedly connected with a
piston rod, and one end of the
piston rod far away from the air cylinder is provided with a
milling cutter; the milling frame is arranged below the
milling cutter, the spraying amount of
cutting fluid can be increased or decreased according to changes of the temperature near the
milling cutter, it can be guaranteed that enough
cutting fluid is provided to cool the milling cutter and a workpiece when needed, spraying is reduced when not needed, and therefore unnecessary
cutting fluid waste is avoided, the using amount of the
cutting fluid is reduced, and the cost is reduced. Compared with the prior art, production cost is reduced, the spraying amount of the
cutting fluid is controlled according to the temperature generated by the milling cutter, the milling cutter can be kept to operate at the proper
working temperature, and therefore the service life of the milling cutter can be prolonged, and
downtime and cost caused by frequent cutter replacement are reduced.