Automatic valve cover ear milling machine

The invention discloses an automatic valve cover ear milling machine. The machine is characterized in that the machine comprises a fixed seat and an overturning rack, the overturning rack is bidirectionally overturns on the fixed seat at 180DEG in a vertical direction and is promoted by an overturning mechanism, the overturned overturning rack is locked by an overturning locking mechanism, the overturning rack is provided with an upper workpiece positioning hole, a lower workpiece positioning hole, an upper workpiece clamping block and a lower workpiece clamping block, the upper portion of the fixed seat is provided with a clamping operating mechanism and a pre-positioning compaction mechanism, the lower portion of the fixed seat is provided with a milling power mechanism, the pre-positioning compaction mechanism pre-positions and compacts the workpiece in the upper workpiece positioning hole when the overturning rack is in an upward turning or downward turning position, the clamping operating mechanism operates the upper workpiece clamping block to act in order to clamp the workpiece in the upper workpiece positioning hole, and after the milling power mechanism is promoted by an upper swinging mechanism, two side ear milling of the workpiece in the lower workpiece positioning hole is carried out by a disk miller. The automatic valve cover ear milling machine can realize the automatic milling processing of two side ears of the valve cover, substantially improves the work efficiency, and improves the processing precision.