Development of Gear Grinding Machine for Concave Conical Gear

摘要

Concave conical gear is a new type of conical gear invented by one of the authors. This new gear is based on the conical gear and besides can take a larger allowable normal load than the conical involute gear. But the grinding machine of the Concave conical gear has not been developed hitherto. So the authors aim to newly devolop a gear griniding machine for this gear. First the principle of generating the Concave conical gear presented, and the practical generating method is also presented on this principle. Secondly the grinding machine is developed. Mechanism and motion transmitting system are invented. Truing method for the conical-shaped wheel is also presented. Finally grinding test are performed. Measurement of the tooth surface verifies that the ground tooth surfaces are in good agreement with the theoretical ones. This fact proves that the new gear grinding machine has a possibility for practical use.