| 摘要 |
<p>The manufacturing process of a reduction gear box in which a rotation direction converting part and a reduction part are joined together is simplified by unitizing both the rotation direction converting part and the reduction part and by manufacturing the reduction gear box by assembling the rotation direction converting unit and the reduction unit. The rotation direction converting unit is provided with a first pedestal having a first flat face, an input shaft supported rotatably in the first pedestal, an intermediate shaft substantially orthogonal to the input shaft, a first gear that rotates integrally with the input shaft, and a second gear that engages with the first gear and rotates integrally with the intermediate shaft. The reduction unit is provided with a second pedestal having a second flat face, an internal gear, an external gear housed within the internal gear, and a crank shaft having an eccentric cam that engages with the external gear and causes the external gear to revolve orbitally in the internal gear by revolving eccentrically. The rotation direction converting unit and the reduction unit are fixed while the first flat face and the second flat face are in a surface contacting state.</p> |
