| 摘要 |
<p>A backlash eliminator capable of eliminating backlash with a low loss while decreasing a backlash eliminating force to curtail friction and heat generation is provided. The backlash eliminator comprises an input shaft (15) coupled to a driving motor (20) and having a drive gear (52); an output shaft (14) fixing a gear (W), as an object to be cut, thereon, and having a driven gear (42); and a stationary intermediate shaft (16) and a moving intermediate shaft (17) disposed parallel to the input shaft and the output shaft, and having large intermediate gears (62, 72) meshing with the drive gear (52), and small intermediate gears (63, 73) meshing with the driven gear (42), and further comprises a switching regulating valve (31) for pressing the moving intermediate shaft (17) in its axial direction so that an output-side backlash elimination torque (Ts) between the driven gear (42) and the small intermediate gear (73) acts in the same direction as the direction of generation of a cutting load torque (Tw) generated in the circumferential direction of the gear (W) during machining of the gear (W).</p> |
