Systems and methods for multi-dimensional variable vane stage rigging utilizing coupling mechanisms

A method of adjusting a vane assembly of a gas turbine engine, comprising

• providing a plurality of vanes of the vane assembly, the plurality of vanes extending radially outward relative to a central axis of the gas turbine engine,
• arranging an annular ring radially outward of the central axis,
• coupling the annular ring to the plurality of vanes,
• mounting a base frame on the annular ring, the base frame including a support body extending axially away from the annular ring, the support body having a first cylindrical cavity formed therethrough that extends radially and that is offset axially from the annular ring,
• selectively and removably arranging a first collar that is cylindrical within the first cylindrical cavity at a first rotational position therein, the first collar having a second cylindrical cavity formed therein and opening radially outwardly,
• fixedly coupling a roller pin to a radially outer surface of a second collar that is cylindrical, and
• selectively and removably arranging the second collar within the second cylindrical cavity of the first collar at a second rotational position therein so as to locate the roller pin at a first discrete roller pin position,
• wherein a first central axis of the first cylindrical cavity is offset from a second central axis of the first collar and a third central axis of the roller pin is offset from a fourth central axis of the second collar, and wherein the first collar is configured to be selectively arranged at a plurality of rotational positions including the first rotational position within the first cylindrical cavity and the second collar is configured to be selectively arranged at a plurality of rotational positions including the second rotational position within the second cylindrical cavity of the first collar such that the roller pin is configured to be positioned at a plurality of distinct roller pin positions including the first discrete roller pin position each corresponding to a rotational position of the first collar and a rotational position of the second collar.