A Study on Forging of Spiral Bevel Gear

Two ideas for crowning of tooth surface to obtain point contact for forging gears are proposed. The numerical data are calculated and used for CAD/CAM systems for forging of spiral bevel gears. Tooth contact of proposed gearing is confirmed by the 3D drawing of tooth surfaces. Master gears to work metallic pattern to forge a pair of spiral bevel gears were made and contact mark coincides well with 3D contact mark calculated by the theory proposed in this paper. The authors forged the spiral gear pair by the two methods