Stress wave gearing

摘要

The proposal is for a stress wave gearing with a first gearing element (10), which has a circular-cylindrical aperture (11) and on the inner surface of which a deformable tubular second gearing element (12) can be made to roll, the outside diameter of the second gearing element in the undeformed state being slightly less than the diameter of the aperture (11). Rotatably mounted within the second gearing element (12) and concentric with the first gearing element (10) is a third gearing element (16), on which the second gearing element (12) is rotatably arranged and which is deformed essentially elliptically in such a way that it rests at two opposite points on the first gearing element (10). A region (28) of the second gearing element (12) extended beyond the width of the third gearing element (16) is connected in torsionally rigid fashion to a transmission element (25) mounted rotatably and concentrically with the first gearing element (10), the torsionally rigid connection being effected by means of pins (29) which are arranged radially on the extended region (28) of the second gearing element or on the transmission element (25) and engaging in apertures (30) of the other of these two elements. As a result, the transmission element (25) does not influence the deforming second gearing element (12), allowing the latter to be given a very short construction and making it possible to achieve a very compact construction of the stress wave gearing overall. <IMAGE>