| 摘要 |
PURPOSE:To provide an oscillating device wherein oscillating width can be controlled at zero in the course of oscillation by displacing an output shaft from an eccentric position to zero oscillating width position by air pressure from outside. CONSTITUTION:A cylinder 29 and a rotary shaft 16 are turned in a body by actuating a servo-motor 14. An output shaft 25 vertically provided in the cylinder 29 and eccentrically against the rotary shaft 16 is turned around the center axis of the rotary shaft so as to move a dovetail tenon 36 around the center axis of the rotary shaft 16 by rotating, parallel motion. As a result, an oscillating table 37 engaged so as to slide freely with the dovetail tenon 36, placing a dovetail groove 38 therebetween, is oscillated right and left. The oscillating width is double the amount of eccentricity between the rotary shaft 16 and an output shaft 35. If the air pressure at an air inlet 27 side is opened so as to feed air to an air inlet 24 side, the cylinder 29 comes into contact with a zero-point control volt 33 and stops at the center of oscillation, and the oscillation width becomes zero in the course of oscillation. |
