| 摘要 |
PURPOSE:To provide a higher load efficiency and excellently engage shape of tooth by improving the shape of the wave generator of a wave motion gear device. CONSTITUTION:The shape 10 for forming the outer shape of the wave generator of a wave motion gear device is represented by the tangential polar coordinate expression equation having the Fourier's development terms having at least four terms. Accordingly, the deflection quantity of a flexible external gear is maintained at a prescribed quantity, and the amplitude of the bending stress at the bottom part of the external gear is reduced, and the strength of the external gear is increased, and the inlet gap in the meshing of teeth is spread, and the danger of the interference between teeth can be eliminated. |
