| 摘要 |
The tool holder has a prime shaft which receives an external torque and is partly accommodated in and partly projects from a casing. A speed reduction unit has a coaxial three-layer structure consisting of a wave generator, a flexible spline and a circular spline, one is secured to the casing while the other is an output section. A rotary holder is secured to the output section. A tool holder mounting shaft is supported by a top end of the rotary holder. The tool holder mounting shaft has a top end portion projecting from the casing. A crankshaft is rotatably provided within the inner wall of the roatary holder. |
