Abstract
CVD diamond thick film tools have excellent superiority in machining accuracy, efficiency and tool lives because of high hardness, good wear resistance and super chemical stability. However, for some reasons, the cutting performance of CVD diamond thick film tools cannot be fully utilized in practical application. In order to improve this situation, the orthogonal test method was used to investigate the effects of tool geometry parameters and cutting parameters on the cutting performance of CVD diamond thick film tools based on AdvantEdge FEM. Cutting force and tool tip temperature were used as the evaluation index of tool performance to comprehensively optimize the tool geometry parameters and cutting parameters by matrix analysis method. The results show that the order of significant influence of each factor on tool performance evaluation index from high to low is cutting depth, feed, cutting speed, tool nose radius and relief angle. Under the certain cutting conditions, CVD diamond thick film tools can show better cutting performance when the relief angle is 15°, the tool nose radius is 0.8 mm, the cutting speed is 90 m/min, the feed is 0.05 mm/r and the cutting depth is 0.05 mm.
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