木材の振動切削における切屑の挙動とこれが切削抵抗に及ぼす影響

概要

論文の詳細を見る
In low frequency vibratory cutting of wood, the effect of elastic recovery of chip deformation during cutting on cutting force was clarified by means of a high-speed motion analysis technique. In addition, the changes in shearing angle and shearing strain were investigated. At a cutting speed lower than the critical cutting speed, the actual cutting duration was longer than the theoretical one, because of the elastic recovery of chip deformation during cutting. The mean effective cutting force excluding the force due to the elastic recovery of chip deformation well coincided with the calculated value of mean cutting force (based on the concept of critical cutting speed). In general, however, the cutting force measured in vibratory cutting is not the mean effective cutting force, but the mean .actual cutting force including the force due to the elastic recovery of chip deformation. Hence, the mean actual cutting force in the vibratory cutting is greater than the calculated value of mean cutting force. The cutting ratio and shearing angle in the vibratory cutting were greater than those in the conventional one (cutting without vibration) . On the contrary, the shearing strain in the former was slightly smaller than in the latter. This means that the plastic deformation of chip in the vibratory cutting is smaller than that in the conventional one.
1977-05-15