Viabilidade econômica em processos de rosqueamento utilizando machos de roscar com condicionador metálico

Abstract

In the machining industries in general to manufacture small internal threads is a trivial task and often the last operation to be performed. Currently the machining tool called tapping tool is practically the only resource for manufacturing small internal threads. Due to the limitations intrinsic to its application, there are few technological advances in recent years compared to other manufacturing processes for machining. Recent advances are limited to, in general, the type of coating material, the type of cutting angles applied in machine tools and adoption as carbide tool material. In order to contribute to the topic, this study aims to make an analysis economic viability of the operation with tapping tools after applying a metal conditioner on its surface, which is a synthetic liquid whose primary function is to reduce the friction between metals, checking the cost / benefit relationship of this procedure. For this, was used a workpiece with 37 threads each and the end of the tool s life was determined by a non-pass caliper or broken down. Two conditions were analyzed, the first being the normal condition and the second with the application of the metal conditioner on the surface of the tool. Statistics techniques were applied to verify the reliability of each test. The test results demonstrate increased tool s life in threading operation with tapping tools, reducing production costs and a higher cost-benefit relation when used metal conditioner.