Forming technology for precision forged gears utilizing elastic deformation of molds: EDF method

Cold forging of crowning helical gears! Effective for the molding of tooth surface taper gears as well.

Introducing the EDF method (Elastic Deformation for Forging) for the molding technology of precision forged gears utilizing elastic deformation of molds. Developed in 1988, it is fundamentally a sizing method after rough tooth molding. By pressing the tooth profile die along the inner diameter taper of the outer die with a punch, it is possible to apply strain to the tooth profile from the radial outward direction, preventing pressure differences in the vertical direction due to friction. 【Effects】 ■ Reduces the amount of re-melting, helping to decrease CO2 emissions by eliminating chip generation. ■ Paves the way for weight reduction. ■ There is less imbalance in the left and right teeth regarding quenching strain. ■ Gears have long suffered from gear noise, but this method is expected to be beneficial in that area as well. *For more details, please refer to the PDF materials or feel free to contact us.

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