A Special Type of Milling Fixture for Discontinuous Threads (original) (raw)

2001

Abstract

A discontinuous thread is one, which is normally made for lug finishes as seen in jam jar bottles and other food products, bottles that are usually filled under vacuum. The current practice of machining the threads in the die for lug finish is done manually. This increases the lead-time and the quality of lug finish is very poor. In order to reduce the lead time and to improve the quality of the lug finish in the components, a novel method using a special type of milling attachment along with an indexing mechanism has been developed to machine the discontinuous threads. This paper explains clearly the fabrication details and the working mechanism of a model of the special type of fixture used for milling discontinuous threads.

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