Study on high efficiency machining of groove shape using ceramic end mill

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  • セラミックエンドミルを用いた溝形状の高能率加工に関する検討

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In recent years, the application of ceramic end mill has been studied for the purpose of improving the efficiency of end milling of difficult-to-cut materials such as Ni-base heat resistant alloys. However, although there are cases of application in simple shape and continuous cutting, there are few cases of application in groove shape and intermittent cutting.In this study, the relationship between the tool path and the tool edge condition was verified by the cutting test of the groove shape of Inconel 718 with a ceramic end mill. As a result, it was found that the damage state of the tool was greatly different depending on the tool path. In particular, the tool life was the best among the test conditions under the condition that the ramping process was applied to the axial cutting with a 4-flute tool.

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