APPARATUS FOR GRINDING THE INTERNAL WALLS OF PIPES

摘要

A grinding tool for grinding cracks and other defects located on the inner walls of a tube or pipe. The tool and its motor drive are mounted on a shaft which is movably supported so as to be capable of being inserted into the pipe from one of its ends. Once the tool is positioned properly both longitudinally and circumferentially within the pipe, actuating means, which can be operated from outside of the pipe, are used to move the grinding tool radially outwardly until it is in contact with the inner pipe wall where the grinding is desired. The actuating means includes a pair of coacting wedges, on one of which is mounted the grinding tool and its motor drive.