Fundamental study of high accuracy truing of a small-diameter quill with shoe support

1st report: Deflection behavior of the quill

Abstract

In this study, an advanced truing assist system with shoe support was developed for high accuracy of extremely small diameter wheels. To evaluate the system, deflection and reaction force while supporting a quill were measured, and the optimal truing conditions were investigated by analysis of surface roughness. The above-mentioned system provided the advantage of reduction in deflection with changes in position of the shoe. In addition, Lissajous figures indicated that rotational trajectories varied from elliptical to circular corresponding with decreases in deflection. Furthermore, the improvement of surface roughness without damage to the wheel was confirmed after adopting the truing assist system.