Computer aided selection of cutting parameters by using fuzzy logic

ABSTRACT COMPUTER AIDED SELECTION OF CUTTING PARAMETERS BY USING FUZZY LOGIC YİLMAZ, Oğuzhan M. Sc. In Mechanical Engineering Supervisor: Assist. Prof. Dr. Günseli GÖRÜR July 1999, 110 pages. In this study, a computer program, CAS-CUPFUL (Computer Aided Selection of CUtting Parameters by Using FUzzy Logic) has been developed for the selection of cutting parameters of turning operation from the Machining Data Handbook by using Fuzzy Logic. Selection of cutting parameters for machining applications is a complex problem. For eliminating this problem, a Fuzzy Logic (FL) based approach to setting these parameters is developed. The materials data file was prepared by using twelve different types of materials, four cutting tool types and four depth of cuts. The data used to evaluate the fuzzy model were taken from the machining data handbook. Computer software is developed to obtain the cutting speed, for any selected material which exists in data file. After the selection of material type, and entering the hardness value of the material in terms of BHN, selecting the cutting tool type and depth of cut, the program comes into action based on the fuzzy logic model to determine the cutting speed value. The model is used for five fuzzy sets in triangular shape, five fuzzy expert rules, and centroid defuzzification method. mExecution of the program ends with the cutting speed value and feed value which were visualized on the screen. This menu-oriented computer program is prepared and visualized on the screen by using Matlab Fuzzy Logic Toolbox and Matlab Programming Language. Key Words: Fuzzy Logic, Cutting Parameters, Computer Aided Selection (CAS) IV