Development of Plastic Gears for Power Transmission : Various Methods of Lengthening the Life of Plastic Gears and Their Effect

摘要

The life of plastic gears is shortened when they are used at a high temperature because they become less strong and vary in the way they mesh with each other, causing them to be worn away at their root in an abnormal way. It is necessary for lengthening the life of plastic gears to take care not to generate heat in them and to keep them from rising in temperature due to radiating heat quickly. The present report deals with various methods designed for lengthening the life of plastic gears having form and dimensions adapted to given operating conditions and makes inquiries about whether the use of these methods can lengthen the life of plastic gears to a greater extent than expected at the time of designing.