| 摘要 |
<P>PROBLEM TO BE SOLVED: To move a moved body along locus of quadrilateral having no point of speed zero. <P>SOLUTION: This mobile device is composed of a planetary gear mechanism and a mobile means driven by the planetary gear mechanism. The planetary gear mechanism is composed of a sun gear, an internal gear arranged concentrically with the sun gear and held in a stationary condition, a plurality of planetary gears arranged to be apart from each other in the circumferential direction so as to mesh with them in a space formed between the sun gear and the internal gear, and a driving pin provided protrudedly at a position eccentric from a central shaft of rotation in one of the planetary gears. The number of teeth of the planetary gear is 1/4 of the number of teeth of the sun gear to rotate four times while the planetary gear rotates around the sun gear a time by rotation of the sun gear. The mobile means is engaged with the driving pin and is driven along locus of substantial quadrilateral. The surface polishing machine has a workpiece driven by the mobile device and a polishing means for the workpiece. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
