Positioning of Coiling Tool in 1-Finger System with Coiling Mandrel

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  • 心金付一本ピンコイリングにおける工具配置と製品形状
  • ココロ カネツケ イッポン ピン コイリング ニ オケル コウグ ハイチ ト

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Description

The summary of the results is shown below.<br>(1) Experimental values agree well with the theoretical results on the assumption that the wire forming curve to helical springs consists of straight line and circular arc.<br>(2) It is desirable to move coiling point in the direction of a fixed angle, because it is obtained in 1-finger system that the angle between wire guide groove line and the line from wire guide outlet to coiling point is constant independent of spring index.<br>(3) When coiling point is moved parallel along the axis of mandrel, the required winding pitch is obtained. But spring index (D/d) is invariable within the limits of this experiment (D/d=7-17) even if the winding pitch is varied in the above-mentioned method.

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