To provide a micro/quick feeder easily manufactured and improvable in strength and durability while obtaining a large reduction ratio.
This micro/quick feeder comprises a rotatable first shaft 4 provided with an external thread part 7 on the outer peripheral surface; a rotatable second shaft 5 having a driving gear 14 on the outer peripheral surface over the axial direction and provided parallel with the first shaft; a driven gear 10 having an internal thread part 11 screwed with the external thread part, on the inner peripheral surface, and provided in a rotatable and axially movable manner to the first shaft and meshed with the driving gear on the outer peripheral surface; and a motor 8 for rotating the first shaft and the second shaft. When rotation is made to make the rotating direction the same in the state of applying a rotation ratio to the first shaft and the driving gear, the driven gear is micro fed in the axial direction of the first shaft. When rotation is applied to make the rotating direction of the first shaft and the driven gear reverse, the driven gear is quickly fed in the axial direction of the first shaft.
| JPS5421694 | MAIN SHAFT HEAD AND ARBOR |
| WO/2002/053941 | POWER-SPLIT ANGULAR GEAR |
Sadao Muramatsu
Atsushi Tsuboi
Ryo Hashimoto
Satoshi Kono
Makoto Nakamura