Showing papers on "Roller burnishing published in 1988"
Patent•
22 Apr 1988
TL;DR: In this paper, a method for processing a nut seat formed around a bolthole on a wheel including the steps of drilling the nut seat and the boltholes substantially simultaneously with a step drill and performing roller burnishing on at least edge portions of the Nut seat was presented.
Abstract: A method for processing a nut seat formed around a bolthole on a wheel including the steps of drilling the nut seat and the bolthole substantially simultaneously with a step drill and performing roller burnishing on at least edge portions of the nut seat wherein the roller is rolled on the nut seat in the circumferential direction of the nut while the roller is pressed onto the nut seat. By roller burnishing, at least the edge portions of the nut seat are finished to a specular grade. The strength of the nut seat itself can be increased by the roller burnishing, thereby decreasing the required thickness of a light alloy wheel and the total weight of the wheel. In addition, the manhours for processing the wheel can be reduced.
11 citations
Patent•
19 Apr 1988
TL;DR: In this paper, a cylindrical cage supporting the rollers within the head is driven in rotation to rotate the conical rollers at a high speed and the roller is caused to orbit by driving the cage in low speed rotation.
Abstract: A roller burnishing device for sizing and/or finishing the external surface of a workpiece having a circular sectional contour by causing a relative rotation between the workpiece and a plurality of truncated conical rollers arranged within a head having a truncated conical inner surface. In this device, the head is made nonrotatable and instead a hollow cylindrical cage supporting the rollers within the head is driven in rotation to rotate the rollers at a high speed and the rollers are caused to orbit by driving the cage in low speed rotation thereby causing the rollers to make a planetary motion within the head.
9 citations
Patent•
05 Jul 1988
TL;DR: In this paper, a work is 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.
Abstract: 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
5 citations