Theoretical studies of the kinematic error of a wave gear

A new mathematical model for determining the kinematic error of a wave gear is presented. One of the requirements to wave gears is to increase their kinematic accuracy. Kinematic errors are mainly caused by the deformations of the flexible wheel, the radial oscillations of the gear cam, and the manufacturing errors. Furthermore, the influence of the accuracy of parts, gear and load parameters, etc. on the kinematic accuracy must be investigated. In this paper, a mathematical model that takes into account spatial deformations of wave gear elements, multipair and multizone engagement parameters, and fabrication and installation errors of parts is developed. The proposed mathematical model is based on the calculation of the elastic interaction of wave gear elements. The results of research of the kinematic error of the wave gear with a cam wave generator were obtained for the flexible wheel diameter d = 160 mm. The effect of the errors of parts on the kinematic error is discussed.

References

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