| 摘要 |
The present invention addresses the problem of reducing the size of the cross-sectional shape perpendicular to the lengthwise direction of the threaded shaft of a slider when the diameter of the outer peripheral circle of a threaded shaft is the same as that of a single-axis actuator which uses a circulation tube to form the ball return path of the single-axis actuator, and of increasing the load capacity when the dimensions in the lengthwise direction of the threaded shaft of the slider are the same. With the present invention a ball return path, which returns the balls (4) of a ball screw mechanism from the terminal point to the starting point of a raceway, is formed by means of a through-hole (24) that penetrates in the lengthwise direction of a threaded shaft (3) of a slider (2), and by means of an end deflector (6). The end deflector (6) has a direction-switching path connecting with the through-hole (24). The main body (61) of the end deflector (6) is mated with notch parts (26) formed at both ends in the lengthwise direction of the threaded shaft (3) of the slider main body (2A). |
