Liquid rocket engine inducer machining process equipment and using method

The invention relates to liquid rocket engine inducer machining process equipment and a using method. The liquid rocket engine inducer machining process equipment comprises a positioning disc, a cylindrical pin, a mandrel, an inner hexagon bolt, a guide flat key, an inner hexagon screw, a gasket and a compression nut. The positioning disc is in interference fit connection with the mandrel through a cylindrical pin, the mandrel is fastened on the positioning disc through a hexagon socket screw, and after the positioning disc is connected with the mandrel, the axis of the mandrel is perpendicular to the end face of the positioning disc; the guide flat key is fixedly connected to the mandrel through the inner hexagon screw, the inducer to be machined is clamped and positioned, and an inner hole of the inducer to be machined penetrates through the mandrel to be positioned and then is fixed through the gasket and the compression nut, so that the position precision, the machining quality and the machining efficienc