| 摘要 |
PURPOSE: A conveying device structure is provided to minimize the friction force by the lubrication operation, removing the noise, simplify the backlash clearly by removing the interference of teeth, and smooth the filling of grease while preventing the leakage of the grease by deforming the coupling structure between a lead screw and a nut part, thereby carrying out the rectilinear reciprocation of a housing nut-coupled with the lead screw smoothly and the conveying operation precisely without any error. CONSTITUTION: A conveying device structure includes a lead screw(10) of which an outer surface is formed in the shape of spherical screw(11), and a housing(20) coupled with the lead screw for moving rectilinearly and having a nut part of which an inner surface is formed in the shape of spherical screw corresponding to the outer surface of the lead screw, wherein the spherical screw of the nut part contacts an end portion(11a) of the spherical screw of the outer surface of the lead screw.
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