Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
A Study on Polygonal Turning
Submission Author:
Leandro Oliveira , RS
Co-Authors:
José Cavalcante, Leandro Oliveira
Presenter: José Cavalcante
doi://10.26678/ABCM.COBEM2017.COB17-2278
Abstract
Turning is a machining method that traditionally produces circular section parts. However, with the use of a rotating tool, it becomes possible to produce polygonal sections. The polygonal turning, as it is called, compared to milling in the production of polygonal sections, reduces the margins of error and production time. This study aims to present in detail the operation of this type of turning able to produce parts with flat surfaces through revolution movements. The first part of the study is focused on the development of two models representing the turning, having as input variables the rotational relation between tool and workpiece, the relation of the tool radius and workpiece and the number of sides and cutting edges. One model is mathematical, that with the help of spreadsheets evaluates variables. The other model is real, which facilitates understanding of the dynamics of this method and is a data source. Four variables combinations are performed in the mathematical model in order to understand the influence of each one on the flatness of the surface generated. A final combination of input values is performed by comparing the results between the real model and the mathematical model. This study determines curves generated by various rotating relations and gives rotation of 1:2 like more efficient. It is concluded that the flatness error is less for smaller radius relations and polygons with more sides.
Keywords
Polygonal turning, machining, Flatness, mathematical model, real model
