Flank Wear Characteristics of Cutting Tools in Different Types of Tests : Comparison between Results of Conventional Turning, Step Turning and Facing Tests

概要

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Although the performance of cutting tools has been evaluated by the tool-life values in the conventional turning tests, it is difficult to apply such data for the estimation of tool wear characteristics in different types of cutting tests. The purpose of this study is to clarify the relationships between various test results on flank wear. Three types of cutting tests, i.e., conventional turning, step turning and facing tests are performed on mild steel withsintered carbide tools. The tool wear growth curves of all tests are respectively formulated based on a few assumptions. The wear rate, which is defined by the wear land width per unit cutting length excepting the initial wear, is mainly used for analyzing the results. Thus, some relations are revealed between the results of above three tests ; a significant difference is recognized in the wear rate between facing test and the other two tests.
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