ガラス繊維充てんポリアセタール歯車の研究

概要

論文の詳細を見る
When glass fiber filled plastic is injection molded into gears through a conventional metal mold, there is a possibility that the end of the filled fiber will face and damage the tooth surface of the mating gear. In order to prevent the above damage and to increase the bending strength of teeth by arranging filled fibers uniformly in the direction of tooth form, we devised a metal mold in which as many fibers as possible can be arranged uniformly in the direction of tooth form at the time of injection molding. In this research, both kinds of composite plastic gears, containing 25% or 40% glass fibers respectively in polyacetal, were injection molded through this metal mold. Together with examining the bending fatigue strength and running characteristics of the teeth of the above gears by experiments, we performed the same experiments for composite plastic gears which were injection molded through a conventional metal mold. Comparing these results, we studied the profitability of the devised metal mold.
1997-10-25