| 摘要 |
A roller screw comprises a screw shaft (1) externally formed with a spiral roller rolling groove (1a), a nut member (2) internally formed with a spiral load roller rolling groove (2a) opposed to the roller rolling groove (1a), a return pipe (4) connecting one end of the load roller rolling groove (2a) of the nut member (2) to the other end thereof, and a plurality of rollers (6) received in the load roller rolling passage (3) and return pipe (4). Disposed between a pair of adjacent rollers (6, 6) is a spacer (31) for preventing the pair of rollers (6, 6) from contacting with each other. By such roller screw, it is possible to smoothly circulate rollers without causing skew. |
