Vacuum imbibition clamp and method for processing composite material with clamp

The invention provides a vacuum imbibition clamp and a method for processing a composite material with the clamp. The vacuum imbibition clamp comprises a clamp body, a vacuum sucking disk, a vacuum duct, a positioning mechanism and a piezoelectric crystal inching mechanism, wherein the vacuum sucking disk is used for clamping a workpiece, and is arranged on the top surface of the clamp body; the vacuum duct is formed inside the clamp body; one end of the vacuum duct is connected with the vacuum sucking disk, and the other end of the vacuum duct is connected with a vacuum generator; the positioning mechanism is used for limiting the movement and rotation of the workpiece, and is arranged on the side face of the clamp body; the piezoelectric crystal inching mechanism is used for supporting the workpiece and ensuring needed tension force output; and a linear movement output component of the piezoelectric crystal inching mechanism is arranged on the side face of the clamp body. Due to the adoption of the vacuum imbibition clamp and the method, the problems of insufficient rigidity and vibration in a workpiece machining process can be solved, the workpiece is prevented from deforming, the processing precision is increased, and the surface quality is improved.