はかり用の一体型平行ばね機構の変位特性(第7報) : 半円弧ばねの寸法誤差にもとづく変位誤差比の修正方法

概要

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So far, authors have clarified the effects of dimensional errors of the parallel spring movement with right half circular springs on the error rate of displacement. Although it is desirable for balances that the dimensional errors of springs are eliminated by machining, such a work itself, however, takes engineers much time to correct the dimensional errors. So, the authors propose here a notched springs by which the error rate of displacement can be modified without eliminating the dimensional errors. Following is concluded through theoretical, experimental and FEM analyses. (1)In case of the movement with two circular springs, a notch at around ±16 deg measured from the position with the minimum thickness is most effective for modification, while the one at the minimum thickness contributes to no modification. (2)In case of that with four circular springs, a notch at around ±3 deg measured to the outsides, respectively, from the position with the minimum thickness is most effective for modification, while the one near reinforcing plate shows a few effect.
公益社団法人精密工学会の論文
1992-06-05