Actuating gear and method for assembling an actuating gear of an electromechanical camshaft adjuster

A method for assembling an actuating gear of an electromechanical camshaft adjuster, comprising:

• providing:
• a drive wheel configured as a ring gear,
• an internally toothed output element having:
• an outside diameter matched to an inside diameter of the drive wheel, and
• a first internal toothing, and
• a further internally toothed element having:
• a second internal toothing with a diameter corresponding to the first internal toothing of the internally toothed output element,
• a disc-shaped section, and
• a cylindrical section, and
• an externally toothed flexible gear element surrounding a wave generator, and the externally toothed flexible gear element and the wave generator form an adjuster assembly,
• inserting the internally toothed output element into the drive wheel,
• partially inserting the adjuster assembly into the internally toothed output element so that an external toothing of the externally toothed flexible gear element partially meshes with the first internal toothing of the internally toothed output element,
• inserting the further internally toothed element into an axially extending recess arranged on an axial end face of the drive wheel so that:
• i) a radial gap is formed between an outer peripheral surface of the disc-shaped section of the further internally toothed element and an inner peripheral surface of the axially extending recess, and a width of the radial gap is larger than a radial play of the internally toothed output element in the drive wheel, ii) the external toothing of the externally toothed flexible gear element partially meshes with the second internal toothing of the further internally toothed element, and iii) the internally toothed output element and the further internally toothed element are aligned, defining an aligned position, and
• fixing the further internally toothed element in the aligned position on the drive wheel.