FLEXIBLE EMBRACING ABRASIVE TOOL FOR WORKING ECCENTRIC SHAFTS AND SCREWS Russian patent published in 2003 - IPC

FIELD: machine engineering, namely machine tool manufacture and tool production, possibly finish abrasive working of eccentric shafts and helical surfaces of accurate screws used, for example in screw pumps and made of hard-to-grind materials by embracing grinding process. SUBSTANCE: tool includes abrasive layer applied onto flexible base in the form of tore-like elastic envelope embracing part. Abrasive layer is applied onto inner surface of tore. Abrasive tool is driven for working by means of compressed air supplied into elastic envelope and it is designed for working screws of screw pumps. EFFECT: enhanced quality and efficiency of grinding due to increased contact surface area between tool and part, intensified modes for working complex and helical surfaces with uniform allowance. 2 cl, 3 dwg