Positioning mechanism for automobile cylinder cover machining

The utility model discloses a positioning mechanism for machining a cylinder cover for an automobile. The device comprises a base, a fixing frame, bolt holes and a placing groove, the fixing frame isarranged below the base. The fixing frame is provided with the bolt holes. The placing groove is formed in the base; a first clamping table is mounted above the base; a first sliding rail is mounted in the first clamping table; a first rubber block is arranged on the first clamping table. A first adjusting handle is installed on the front portion of the first clamping table, a second clamping table is installed on the side face of the first clamping table, a second sliding rail is installed in the second clamping table, a second rubber block is arranged on the second clamping table, a second adjusting handle is installed on the front portion of the second clamping table, and a first telescopic rod is installed on the rear portion of the containing groove. The positioning device is simple in structure, reasonable i