Systematic Design of Double Enveloping Worm Cutting Attachment on Lathe

Abstract

Now a day, the popular industrial transmission system is the double envelope worm gear sets, because it has high efficiency, is smaller and is more powerful than conventional worm gear sets. However, due to the complexity of worm’s shape, which circumference envelopes around the worm wheel radius and envelopes around the tooth profile, the worm has to be produced by a specific machine. As a result, the replacement parts cannot be manufactured locally and must only be imported. This research is aimed to design the double envelope worm machining on lathe attachment based on the system design principles. The design of this attachment can be used for turning a DP-16 double envelope worm to meet a quality standard level 8. It can replace a worn double envelope worm effectively.