ASPECTS REGARDING THE MODELLING OF THE CHIP GEOMETY IN END MILLING
Journal Title: Proceedings in Manufacturing Systems - Year 2012, Vol 7, Issue 1
Abstract
Due to the fact that the milling process still remaining a challenge for researchers, the paper deals with the concept of chip geometry model built on the basis of geometric definition of the cutting tool, namely the inserts. This model type is considered for its integration into a global model of the cutting process. This research tries to give new methods for defining the uncut chip area and length, namely CAD methods, replacing the analytical ones very complex for some cutting tools. The main purpose of the work is to obtain functions of two variables (cutting depth and feed per tooth) for the uncut chip area, uncut chip length and uncut chip thickness using multiple regression algorithms. The achievement of the relation is important in cutting force estimation and also in optimization of cutting parameters. These functions of two variables (ap and fz) approximate the actual average chip area, length and thickness values with relative errors less than 10 %. The cutting tool used is CoroMill R 365-080Q27-S15M with cutting tool inserts R365-1505ZNE-PM 4230 (Sandvik Coromant). The fit between data obtained though CAD methods and data calculated through the model is very good, the functions for uncut chip area, length and thickness being reliable.
Authors and Affiliations
Corina CONSTANTIN, George CONSTANTIN
Keywords
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