| 摘要 |
PURPOSE:To fit the gear into the movement quickly and smoothly during assembly of a watch, by providing a pick-and-place whose arm vibrates during fitting of the gear into the movement. CONSTITUTION:A pick-and-place control circuit comprises a drive unit 10 which adds the outputs of a comparator A and a sine wave generation circuit 12 and converts the result into a current, servomotor 11, an X-axis servomotor controller 14 consisting of the circuits such as a sine wave generation circuit 12 which oscillates with a vibration initiation signal and a Z-axis servomotor controller having the same function as the controller 14. When the servo system is in equilibrium, the output from the comparator 9 is zero. The circuit 10 outputs a sine wave current to the motor 11. Consequently the motor 11 undergoes rotational vibration and the arm vibrates. Accordingly, the gear can be fitted to the movement smoothly and quickly. |
