| 摘要 |
PURPOSE:To make it possible to drive each circular bowl independently by single power supply, in a mechanism comprising single power supply and plural number of circular bowls arranged in multiple stages, by controlling the make- and-break of the mechanical power transmission between the power supply and each circular bowl. CONSTITUTION:When a shaft 12 is rotated continuously in one direction by a power supply 11, the driving part 13 of an electromagnetic clutch, which is installed in relation to each of the upper and lower circular bowls 1, is also rotated in one body. Under this condition and when the electromagnetic clutch is controlled to connect the driving part 13 to a driven part 14, the rotation of the shaft 12 is transmitted to an elliptical plate cam 15. Then, a cam follower 23, which is pushed to the plate cam 15 by a tension spring 25, is oscillated at the frequency of two times of the rotation number of the shaft 12, and an oscillating plate 24 is oscillated rotationally together with a spline shaft 17. Accordingly, the circular bowl 1 comes to be oscillated spirally through a spline nut 18, which is engaged with the spline shaft 17 and pushed to a guide plate 21 having inclined plane by a spring. |
