1998 Volume 64 Issue 623 Pages 2682-2687
The purpose of this paper is to improve the accuracy of free height of helical compression springs. A pair of feed rollers generate torsion of wire at feeding of wire. Torsion of wire makes the accuracy of free height of helical compression springs lower at the continuous production. And then, the mechanism that a pair of feed rollers getaerate torsion of wire is analyzed with a geometric approach in order to estimate torsional angle of wire. Moreover, the relationship between torsional angle of wire generated by a pair of feed rollers and free height of helical compression springs is analyzed with a geometric approach. And it is shown experimentally that these analyses are available. As the results of the analysis and the experiments, it is important that the upper roller and the lower one should be set on the position not to generate torsion of wire. Namely, the effect of torsion of wire generated by a pair of feed rollers can be removed on the accuracy of free height of helical compression springs.
Transactions of the Society of Mechanical Engineers
Transactions of the Japan Society of Mechanical Engineers
Transactions of the Japan Society of Mechanical Engineers Series A
Transactions of the Japan Society of Mechanical Engineers Series B
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A
