Single pass sizing tool and machine including wear compensation means

摘要

A bore sizing machine of the type having a plurality of single pass abrading tools with a preset single pass cutting diameter progressively increasing from one tool to the next is provided. Each abrading tool includes a wear compensation shaft threadably coupled at one end to an axially slidable tapered arbor inside the tool body and driven at the other end outside the tool body by a stepping motor or other drive device to slide the arbor relative to abrading device carried on the arbor or tool body to return a worn tool diameter to the original preset single pass cutting diameter, preferably in response to a signal from wear sensing and signaling devices.