Patent ID: 6267133
Filing Date: 2001-07-31
Classification: B62D,Y10T

Abstract:
A method for the assembly of a steering valve with a centering unit for a hydraulic power steering system;in which the steering valve includes a first valve element and a second valve element, which are rotatable relative to each other,in which the centering unit includes a first centering element and a second centering element, which are fixed against relative rotation with respect to the respective valve element and, in common with the valve elements, are rotatable relative to one another, and of which at least one centering element can be urged in the direction of the other centering element by the force of a spring, andin which the centering elements have substantially radially oriented grooves associated with one another between which roller bodies can be inserted,said method comprising the following steps:aligning the two valve elements of the steering valve, initially without a centering unit, with their center position by a pressure medium, and joining the two valve elements via a torsion bar spring in this position;pre-assembling the two centering elements of the centering unit in an assembly device separately from the steering valve and aligning the two centering elements together with the roller bodies with their mechanical centering center,joining the two valve elements of the steering valve that are aligned with their center positions with the two centering elements of the centering unit that are aligned with their mechanical centering center, whereinfirst, via a rotationally fixed axial guide, the first centering element is joined to the first valve element in a manner that is aligned with it and is fixed against relative rotation but axially displaceable relative to it, andafter that, by axial displacement of the entire centering unit along the rotationally fixed axial guide, the second centering element is joined to the second valve element via longitudinal press fit.