Abstract
In this paper, to aim at the decrease of processing cost and the improvement of productivity, a high efficient hard hobbing (the flank finish of high hardened gears by coated finishing multi-thread carbide hob of CNC hobbing machine ) is examined for the flank finish of mass producible high hardened small pitch gears. The examination is focused on the accuracy of hobbing and tool life of carbide hob. As a result, high efficient hard hobbing is found effective for the flank finish of mass producible high hardened small pitch gears.
