Showing papers on "Roller burnishing published in 1982"

Skiving and roller burnishing tool

Abstract: A skiving and roller burnishing tool includes a plurality of frustoconically tapered rollers and a retractable knife for use in combination for finishing the internal surface of a cylindrical hole. The roller burnishing tool includes a roller race having a central axis and a frustoconical outer surface tapering radially outward and axially forward. The rollers are arranged about the outer surface of the race for rolling engagement with the internal surface of the hole. The smaller ends of the rollers face forward, and the taper of the rollers is such that the outermost surface portion of each roller is parallel to the central axis of the race. The rollers are biased in the forward direction using a roller pusher with a chosen force so that the force exerted on the internal surface of the hole remains constant over a range of sizes of the hole. The retractable knife includes a pair of radially extendible knife holders defining a camming path having an axial portion and an angled portion. A push dart has a camming element with complementary camming surfaces which ride along the camming path. Axial actuation of the push dart causes the knife holders to extend radially into a stable, locked position.

Increase in the endurance of textile equipment parts by surface plastic deformation

Abstract: 1. Surface plastic deformation may markedly increase the endurance of textile equipment parts. As a result of this, qualitatively new surface layer microgeometry is obtained and its strengthening after SPD provides a 26–35% increase in fatigue strength. 2. Ball and roller burnishing, and diamond smoothing may successfully replace grinding with a marked improvement is treated surface quality.