Abstract
In this study, the machinability of the machining method for controlling chip thickness during the cutting operation was evaluated using simulation based on NC data. A comparative three-dimensional cutting test with a ball end mill was performed using both original and modified NC data. The modified NC data was created for the purpose of controlling the chip thickness generated when cutting with a constant rotation value and changing the feed rate of the original NC data. The results indicated that the actual chip thickness exceeded that of the calculated value although the thickness fluctuation was suppressed. The results revealed that the maximum cutting force and the fluctuation range of cutting force were low, and tool wear after cutting was suppressed using the modified NC data. The application of the method to the cutting of complicated shapes with high removing volume led to reductions in the cutting time by 31 %.
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