Machine for winding a fiber texture onto an impregnation mandrel, and the use of such a machine for making a gas turbine casing out of composite material

摘要

A winding machine for winding a fiber texture on an impregnation mandrel, the winding machine including: a takeup mandrel for storing a fiber texture, the takeup mandrel having an axis of rotation; an impregnation mandrel for having superposed layers of the fiber texture stored on the takeup mandrel wound thereon, the impregnation mandrel having an axis of rotation that is substantially parallel to the axis of rotation of the takeup mandrel; at least one electric motor for driving the mandrels in rotation about their respective axes of rotation; and a control unit for controlling the at least one electric motor for driving the mandrels in rotation.

主权项

1. A winding machine for winding a fiber texture on an impregnation mandrel, the winding machine comprising:
a takeup mandrel for storing a fiber texture, the takeup mandrel having an axis of rotation; an impregnation mandrel for having superposed layers of the fiber texture stored on the takeup mandrel wound thereon, the impregnation mandrel having an axis of rotation that is substantially parallel to the axis of rotation of the takeup mandrel; at least one electric motor for driving the mandrels in rotation about their respective axes of rotation; and an electronic controller configured to control the at least one electric motor for driving the mandrels in rotation, wherein the electronic controller is configured to control an induction current of an electric motor of the takeup mandrel to wind the fiber texture onto the impregnation mandrel while exerting controlled tension thereon, the induction current of the takeup mandrel being based on a predetermined setpoint tension of the fiber texture and a calculation algorithm which associates a setpoint voltage value converted from the setpoint tension with a value of the induction current of the takeup mandrel, wherein the predetermined setpoint tension of the fiber texture is based on characteristics of fibers constituting the fiber texture and parameters used during weaving of the fiber texture, and wherein the value of the induction current of the takeup mandrel is a function of a mean radius of the takeup mandrel.