Control assembly for a stage of variable-pitch vanes for a turbine engine

A control assembly for a stage of variable-pitch vanes for a turbine engine, each variable-pitch vane having a cylindrical pivot at a radially outer end thereof, the control assembly comprising:

• an actuating ring having an annular body having an axis of revolution;
• a vane guidance means for connecting to the cylindrical pivots of the variable pitch vanes;
• a rotating means for rotating the actuating ring about a casing of the turbine engine;
• and
• a centering means for cooperating with the casing to center the actuating ring, the centering means having at least one skid bearing against the casing, the skid being secured to a rod that intersects with a radial housing of the actuating ring, and the skid having an abutment element bearing against a radially external surface of the actuating ring,
• wherein at least one of the skid or the rod are configured to cooperate by radial sliding with an inner wall of a housing, and in that an elastically deformable bearing means are mounted between the skid and the actuating ring to urge the skid radially towards the casing, the skid being configured to be mobile during operation by sliding between a radially internal position defined by a bearing against the abutment element on the actuating ring, and a radially external position wherein the abutment element is at a distance from the actuating ring,
• wherein the skid and the rod are monolithic,
• wherein the skid comprises a first cylindrical portion with a first diameter that is smaller than a second cylindrical portion, the first cylindrical portion extending between the rod and the second cylindrical portion, the second cylindrical portion being configured to bear against the casing,
• wherein the first cylindrical portion is inserted by sliding in an intermediate cylindrical part of the housing which extends radially between a first cylindrical part with a second diameter that is smaller than a third diameter of the intermediate cylindrical part and a second cylindrical part which opens onto the actuation ring,
• wherein a first annular shoulder connects the first cylindrical part and the intermediate cylindrical part and wherein a second annular shoulder connects the second cylindrical part and the intermediate cylindrical part,
• and wherein the elastically deformable bearing means bear against the second annular shoulder and the first cylindrical portion is able to bear against the first annular shoulder.