COMBINATION NEEDLE-ABRASIVE WORKING METHOD Russian patent published in 2004 - IPC

FIELD: machine engineering, possibly effective finishing of blanks of different materials having trend for occurring flaws such as burnings and micro-cracking.

SUBSTANCE: method is realized with use combination type tool head having sleeve-body supporting grinding disc and bush in which elastic cutter members in the form of needles are mounted. Grinding disc has working layer axially shifted in direction of lengthwise feed and it is the form of casing with basic opening and with eccentric basic peripheral surface carrying different-height abrasive segments. The last are mounted in holders with possibility of displacing along circle. Gaskets in the form of rings are placed between needles arranged in parallel rows. Said rings have through openings having the same diameters for needles of one row and increasing diameters for needles of adjacent row in direction from bush end at side of grinding disc to its opposite end. Grinding disc is mounted in sleeve type body with possibility of rotation relative to it at angular displacement of abrasive segments around axis normal to rotation axis of tool. Such design provides increased useful life period of tool.

EFFECT: enhanced efficiency, improved quality of working due to possibility of realizing intensified working modes.

3 cl, 8 dwg