歯車ポンプの容量と有効仕事量とを求める公式とその歯形設計への応用

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  • Formulae to Obtain Capacity and Effective Work of Positive Displacement Pumps and their Applications to Design of Tooth Contour
  • ハグルマ ポンプ ノ ヨウリョウ ト ユウコウ シゴトリョウ ト オ モトメル コウシキ ト ソノ ハガタ セッケイ エ ノ オウヨウ

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By the use of a characteristic function introduced in the last paper, the authors obtained two new formulae, the one is that of delivery rate and the other, of effective work ratio of positive displacement pumps. Formula of delivery rate simplifies those conventionally used. By the aid of these two expressions, an advantageous contour of rotors can be designed. Some examples are shown how to construct a tooth profile for the purpose of raising both delivery rate and effective work ratio at the same time. The formulae shown here are useful for spur type and also for helical type which has toothed rotors of different radii. It may not be applicable to general transmission gears of parallel axis, unless the expressions of torque which were introduced here for gear pump might be modified.

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