Four-shaft machining pneumatic clamp

The utility model discloses a four-shaft machining pneumatic clamp. The four-shaft machining pneumatic clamp comprises a bottom plate, a fixing mechanism, a pneumatic mechanism, four error proofing holes and eight location holes, and is characterized in that the fixing mechanism comprises a press plate block and a press plate block connecting plate; the pneumatic mechanism comprises a cylinder and a control switch; the press plate block is arranged on the bottom plate through the press plate block connecting plate; and the press plate block connecting plate is connected with the cylinder, and the cylinder is provided with an air pipe joint. The four-shaft machining pneumatic clamp disclosed by the utility model has the advantages that the clamping efficiency is improved, the clamping is convenient and stable, and the quality problem generated by machining after error clamping is prevented.