Ceramic matrix composite workpiece clamping method and multi-energy field machining method

The invention discloses a ceramic-based composite workpiece clamping method and a multi-energy-field machining method, belongs to the technical field of ceramic material machining, and aims to solve the problems that in the prior art, a ceramic-based composite workpiece is damaged due to poor clamping, and the clamping precision of a special-shaped workpiece is poor. The method comprises the following steps: acquiring reference data of a ceramic-based composite workpiece, and delimiting a chord plane line and a height line of the workpiece; the workpiece is placed in a clamping tool, the posture of the workpiece is adjusted, and the chord plane line and the height line of the workpiece are leveled, aligned and then fixed; a hydraulic clamping plate is started, the hydraulic clamping plate drives an array type floating clamping piece to move in the direction close to the workpiece, and array type floating heads of the array type floating clamping piece make contact with the side faces of the workpiece correspo