増速ギアつきドライバーメカにおけるねじ締め特性

概要

論文の詳細を見る
Characteristics of tightening screw were investigated by varying the revolution rate of a bit and by changing the kind of screw drivers PEDb200U and PEDbSOOU, whose mechanism has a multiplying gear. In the estimation of tightening screw, an impulsive torque Timp and a ratio of loosening torque to final torque Til 7/,-n are important. Timp increased linearly with a revolution rate and drew a universal line which is independent of setting torque. The ratio of a gradient for PEDbSOOU to one for PEDb200U was 1.52 for a screw of M1.2 and 1.46 for M1.6, respective- ly. These values are in excellent agreement with the theoretical value 1.6. On the contrary, Til Tfin behaved curiously and drew a parabolic curve against the revolution rate for every setting torque. Namely, Til T fin decreases once, take a minimum, and then increases rapidly with an increase in revolution. The latter increase is due to tightening screw with an impulsive torque, but the former decrease cannot be explained yet.
帝京平成大学の論文
2000-12-30