ALL-METAL VIBRATION ABSORBER HOLLOW PEBBLE (AMVAHP) (VERSIONS) AND METHOD OF ITS PRODUCTION

摘要

FIELD: machine building.SUBSTANCE: group of inventions relates to machine building. A vibration absorber comprises a hollow elastic hysteretic element from metal rubber wire material and fastening parts fixed in its central holes by shaped restriction washers and nuts. According to first version the fastening parts are made as two bolts with one of the bolts being fitted by a through central hole. According to the second version - as a bolt and a bush with a through threaded hole and a flange. A stud is screwed into the threaded hole of the bush. According to the third version - as two such bushes with studs screwed into them. The vibration absorber as per the second version is additionally reinforced by a harness of straight wire bundle braided with a wire spiral stretched with constant interval. The vibration absorber production method consists in the following. The fastening parts are installed on a closed and sealed cloth bag closely filled by sand. A globe-shaped workpiece is formed by winding of the stretched wire spiral. An elastic hysteretic element is produced by pressing in radial directions first and then in the axial direction. The bolts are fastened. A hole is made in the cloth bag and the sand is removed. The cloth is removed, or burnt, or left in the vibration absorber. The studs are screwed into the bushes and fixed.EFFECT: improved elastic hysteretic properties at cyclic compression and simplified assembly process.17 cl, 18 dwg