振動切削過程における振動と加工零囲気の影響 : 50Hz振動切削の場合(機械要素,潤滑,工作,生産管理など)

概要

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The effects of cutting atmosphere and the repetition of intermittent contact-uncontact of tool-chip interface on cutting force and chip formation were examined on the case of 50 Hz vibration cutting. To confirm which matter in the air degrades the friction between the rake face of tool and the chip, some vibration cutting have been conducted under the atmosphere with inert nitrogen gas and the air. The resultant data shows that under nitrogen atmosphere, decrease of the friction was observed only the case on the vibration cutting in the air. On the other hand, there were no change on the conventional cutting and the vibration cutting in the nitrogen gas. This means some lubricative layer is made in the intermittent contact and uncontact between tool and the chip. Chip formation process in vibration cutting was also analyzed by Finite Element Method. In the intermittent situation in vibration cutting, loading and unloading are repeated. But no significant difference in chip formation can be observed, the change of frictional state has larger effect to chip forming process.
2004-06-25