Vacuum chuck clamp applied to numerical control machining of aviation large thin-walled workpieces

The utility model discloses a vacuum chuck clamp applied to numerical control machining of aviation large thin-walled workpieces. The device comprises a vacuum pump, a workpiece, a silica gel sealingstrip, a vacuum tank and vacuum sucker assemblies, one end of the vacuum pump is communicated with the vacuum tank through a vacuum pipeline; the other end of the vacuum tank is also communicated withthe vacuum sucker assembly through a vacuum pipeline; the vacuum chuck assembly is composed of four sets of vacuum chucks. T-shaped bolt holes are drilled in each set of vacuum suction cups in an annular array mode. T-shaped bolts are inserted into the T-shaped bolt holes to be fixedly connected with a machine tool platform, drainage grooves are distributed in the short edges of each set of vacuum suction cups, ventilation drainage grooves are distributed in the long edges of each set of vacuum suction cups, and the ventilation drainage grooves between every two adjacent sets of vacuum suction cups are aligned and com