| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for absorbing accuracy errors and cutting the accuracy errors of gears by an elastic body in a gear device, having a backlash reduction mechanism utilizing a spur gear, a helical gear, and conical gears, and to provide a gear device that can be used without replacing gears or bearings for a long time. SOLUTION: The parallel gear device has the spur gear, the helical gear, and a pair of the conical gears whose cone angles are substantially equal. The spacer formed of an elastic body is used to fasten a motor and the spacer together, and to fasten the spacer and a speed reducer. When the spacer and the motor and the spacer and a gear case are fastened together, the planes for fastening the motor and the spacer together and for fastening the spacer and the gear case are two planes that are parallel. They are fixed on lines that pass through the center of the motor in the two planes and intersect with each other substantially at a right angle. They are fixed at equal distances from the center of the motor at two points, respectively so that backlash required in the accuracy errors and the cutting accuracy errors of the gears is absorbed by the elastic bodies. COPYRIGHT: (C)2006,JPO&NCIPI
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