| 摘要 |
PROBLEM TO BE SOLVED: To smooth the movement of a carrier and to enhance durability of the carrier itself. SOLUTION: A both-face polishing machine is provided with the gear constitution of a planetary gear device consisting of an external gear, an internal gear, and a carrier 20 corresponding to a planetary gear, which is provided with a through hole for holding a work, in addition to upper and lower polishing surface tables, which clamp from top and bottom the work being hold by the carrier 20 and which moves relative to the work in order to polish the work. In the both-side polishing machine, a plurality of cylindrical pins 17, which correspond to teeth of a gear, are erected at an equal interval along a circular line of the external gear and the internal gear, and the profile of the gear of the carrier 20 engaged with the train of the pins 17 is of a trochoidal curve. |
