Machining fixture for boring aluminum bracket

The utility model relates to a machining clamp for boring an aluminum support. The fixture comprises a bottom plate, a fixture group and a hole site seat, a plurality of clamp sets are installed on the bottom plate side by side in a left-right mode. The clamp set comprises an end boring base, a front end fixing air cylinder and a rear end fixing air cylinder. The end boring base is vertically installed on the front portion of the bottom plate, the front end fixing air cylinder corresponding to the end boring base is installed on one side of the rear portion of the end boring base, the hole site base is vertically installed at the rear position of the middle of the upper end face of the bottom plate, and the rear end fixing air cylinder corresponding to the hole site base is vertically installed on the rear portion of the upper end face of the bottom plate. The aluminum alloy support has the advantages of being simple in structure and convenient to install, improving the production efficiency of the aluminum a