| 摘要 |
PURPOSE: A NC rotary device is provided to adjust backlash between a worm shaft and a pinion wheel by forming clearance between an intermediate connection ring and a worm shaft connection ring. CONSTITUTION: A NC rotary device comprises a body, a rotary table(200), a pinion wheel(300), a worm shaft(400), a drive motor(500), a coupling(600), and a supporting housing. The rotary table is installed in the front exterior of the body. The pinion wheel is installed in the body and fixed to the rotary table. The worm shaft is connected to the pinion wheel through a worm(410). The coupling connects the worm shaft and the drive motor. The supporting housing is installed in the body and moved horizontally. One side of the worm shaft is inserted to the supporting housing. The coupling is composed of a connection ring(610), a worm shaft connection ring(620), and an intermediate connection ring(630).
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