小歯数・大ねじれ角を有するはすば歯車の転造成形

DOI Web Site 被引用文献1件 参考文献26件

書誌事項

タイトル別名
  • Form Rolling of Helical Gears with Small Number of Teeth and Large Helix Angle
  • ショウハスウ ・ ダイネジレ カク オ ユウスル ハスバハグルマ ノ テンゾウセイケイ : セイケイ カノウセイ ノ ケントウ
  • — Capability of Form Rolling —
  • — 成形可能性の検討 —

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抄録

A number of reduction gear units with small electric motors as power sources are used in automobiles. Smaller units with a low energy consumption are required for future electric vehicles. Although worm gears are widely used in units with a large gear ratio, their efficiency is too low. Therefore, only large motors can be applied in cases where a large torque is required. Even cylindrical gear pairs and/or face gears with a large gear ratio could enable reduction gear units to have a higher efficiency and a lower energy consumption. For this purpose, helical gears with a small number of teeth and a large helix angle are necessary. In the present paper, cold form rolling for forming such gears was proposed. The tooth form accuracy of form-rolled gears was compared with those cut using a hob. Furthermore, the efficiency and service life of the gears were examined. The results show that cold form rolling can be used to form helical gears with a small number of teeth and a large helix angle.

収録刊行物

  • 塑性と加工

    塑性と加工 53 (616), 439-444, 2012

    一般社団法人 日本塑性加工学会

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