Method and apparatus for manufacturing toothed gears

Details Method and apparatus for manufacturing toothed gears Method and apparatus for manufacturing toothed gears

B - Operations, Transporting

23

F

B23F 1/00 (2006.01) B21H 5/02 (2006.01) B21K 1/30 (2006.01) B23P 15/14 (2006.01) B21H 1/04 (2006.01)

Patent

CA 2146042

A disc-shaped material is prepared by punching a high carbon steel plate or soft steel plate, and the disc-shaped material is fixed in position. An outer peripheral portion of the disc-shaped material is heated to a temperature of 400-500°C by means of a high frequency heater. The outer peripheral portion of the disc-shaped material is swaged to form a thickened portion by a swaging die and the thickened portion is then spun to plastically form a toothed gear to the outer peripheral portion of the disc-shaped material in two steps of coarse working and finish working by spinning dies. The thus formed toothed gear is further heated as occasion demands to a temperature of about 900°C for quenching.

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