| 摘要 |
PURPOSE:To have a cycloid gear with less noise generation by creating the teeth using a cutter which has such a construction that the radius of curvature of the circular arc in the meshing portion of the tooth form for gear cutting is larger than the radius of curvature of the circular arc in the other portion of the tooth form. CONSTITUTION:On of the gears is created by a rack type gear cutter 16 having such a construction that the radius of curvature Rc of the circular arc 15a in the meshing portion of the tooth form 15 for cutting a created gear, wherein the tooth form 15 is so made as in continuous combination of at least two or more circular arcs 15a-15c, is larger than the radius of curvature R2, R1 of the circular arcs 15b, 15c in the other portion of the tooth form 15. The other gear is created by another rack type gear cutter 18 having a common tooth 17 with the abovementioned cutter 16. That is, the tooth 17 of this cutter 18 is so made as in continuous combination of circular arcs 17a-17c mating with the circular arcs 15a-15c. Thereby smooth meshing performance is obtained to assure less noise generation. |
