ロータリ耕うん軸の最適設計理論及びエキスパートＣＡＤシステムの研究　第１報　耕うん刃と土との運動関係

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  • Studies on optimum design theories of rotary shaft and the expert CAD system. Part I. Kinematic relationships between rotary blades and soil surface.
  • ロータリ コウウンジク ノ サイテキ セッケイ リロン オヨビ エキスパート
  • Kinematic Relationships between Rotary Blades and Soil Surface
  • 耕うん刃と土との運動関係

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The working performance of a rotary tiller depends also on the optimum design of rotary shaft. The object of this study is to establish the optimum design theory and method for the rotary shaft with reference to the results of previous studies and recent researches. The evaluation theories of working characteristics for the rotary shaft will be analized theoretically and empirically, and the optimum design theory of the rotary blades' arrangement will also be established by using CAE etc. Furthermore, the expert CAD system for the design of the rotary shaft will be developed.<br>This report is the introduction of the study. It deals with the practical design and analytical equations for the edge-curve of a rotary blade based on an ideal theory. Moreover, the relative kinematic relationship between rotary blades and soil surface is investigated in order that numerical computation for optimum design of the rotary shaft can be done by the computer.<br>Besides, the relationship between the velocity rate λ and the tillage depth H and the cutting angle φB of a blade is expounded analytically, because these parameters relate to unstable tillage of a rotary tiller.

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