| 摘要 |
PURPOSE:To perform burnishing on the outer periphery or a work efficiently without leaving indentations by pressing the work rotated around an axis at the finish start position on oblique finishing rollers, starting the roller processing, and relatively moving it under the pressed state. CONSTITUTION:When finishing rollers 18 are brought into contact with a work 14 being rotated by a work drive device, the first and second roller units 70, 71 are expanded against the energizing force of a pressing device 64 because the outer diameter of the work 14 is larger than the distance between both finishing rollers 18 when a stopper 65 hits it. At the same time, the pressing between the work 14 and the finishing rollers 18 is started, the finishing rollers 18 and backup rollers 20 start to be rotated by the rotation of the work 14, a feeding device 22 slowly continues to feed a roller holding device 16, thus the pressing position between the work 14 and rollers 18 is moved in the axial direction. Next, as the pressing position is moved, the roller processing is applied to the whole outer periphery of the large-diameter section of the work 14 to obtain the predetermined smooth surface. |
