Crown block type gantry five-axis machining center machine tool

The utility model discloses a crown block type gantry five-axis machining center machine tool which comprises a working table, side plates are arranged on the two sides of the top of the working table respectively, and the tops of the side plates are slidably connected with a cross beam used for driving a milling cutter to move front and back along the X axis. The front side of the cross beam is in sliding connection with a sliding saddle used for driving the milling cutter to move on two sides along the Y axis, and the sliding saddle is in sliding connection with a ram used for driving the milling cutter to reciprocate up and down along the Z axis. The cross beam adopts the special structural design of a bridge type gantry, the cross beam guide rail adopts a stepped structure of three roller linear guide rails, the cross section of the cross beam is large, the span of the guide rails is large, and two precise roller linear guide rails are respectively arranged on the two side plates, so that synchronous para