ばね論文集
Online ISSN : 1348-1479
Print ISSN : 0385-6917
ISSN-L : 0385-6917
論文
定荷重ぜんまいばねの設計式
四十木 拓朗飯田 和正下関 正義
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ジャーナル フリー

2014 年 2014 巻 59 号 p. 37-46

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The Votta’s equation is usually used for constant-force spiral spring. But the calculated result is not consistent with experiment. One of the main factor comes from the value of Young’s modulus. Generally, Young’s modulus measured by tensile test, does not quite correspond to the value by bending test. We measure the Young’s modulus by bending once more to verify the validity of equations. Furthermore, we point out some logical mistakes in Votta’s equation.We formulate the rigorous equation considering variable load, and then simplify this assuming constant load for practical design.

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© 2014 日本ばね学会
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